Patent US5151583A successfully refreshed from Google Patents.
US5151583A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Focus adjustment device having restricting means for restricting a selecting action according to the degree of nearness of a distance measurement
Assignee: Canon Inc
•
Filing: 1991-11-25
•
Granted: 1992-09-29
•
Expires: 2011-11-25
Abstract
Abstract A focus adjustment device arranged to measure distances at a plurality of points on a picture plane specified by an optical means to be focus-adjusted and to adjust focus of the optical means on the basis of the results of distance measurement includes: selecting circuitry for selecting information on the nearest of measured distances obtained at the plurality of points, and restricting circuitry for restricting a selecting action of the selecting circuitry according to the nearness degree of the nearest distance in relation to the focal length of the optical means, the position of the distance measuring point on the picture plane, etc.
Inventors
- 👤 Tatsuyuki Tokunaga
- 👤 Keisuke Aoyama
- 👤 Hidehiko Fukahori
- 👤 Yasuo Suda
- 👤 Akira Akashi
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-08 05:26
CPC Classifications
G; G02; G02B; G02B7/00; G02B7/28; G02B7/34
Claims Analysis
Total Claims: 104
Claim 1
Independent Claim
135 words
A focus adjustment device for measuring distances from a detector to a plurality of points on an image plane specified by an optical means to obtain distance measurement results, and for adjusting focus of said optical means on the basis of the distance measurement results, comprising: a) selecting means for selecting information on a distance measurement result indicative of the smallest distance measurement results obtained at said plurality of points; and b) restricting means for restricting said selecting means from selecting information according to a degree of nearness of said distance measurement result indicative of said nearest point in consideration of a focal length of said optical means, and a position of one of said plurality of points on said image plane at which said distance measurement result indicative of said nearest point is obtained.
Claim 2
Dependent Claim
135 words
A focus adjustment device for measuring distances from a detector to a plurality of points on an image plane specified by an optical means to obtain distance measurement results, and for adjusting focus of said optical means on the basis of the distance measurement results, comprising: a) selecting means for selecting information on a distance measurement result indicative of the smallest distance measurement results obtained at said plurality of points; and b) restricting means for restricting said selecting means from selecting information according to a degree of nearness of said distance measurement result indicative of said nearest point in consideration of a focal length of said optical means, and a position of one of said plurality of points on said image plane at which said distance measurement result indicative of said nearest point is obtained.
Claim 3
Dependent Claim
135 words
A focus adjustment information forming device in which a plurality of points on a picture plane defined by optical means on which the focus adjustment is to be performed are subject to a distance measurement to measure the distance from a detector, and information of the focus adjustment of said optical means is formed on the basis of results of the plurality of distance measurements, comprising: (A) focal length signal input means for inputting a focal length signal corresponding to the focal length of said optical means; and (B) focus adjustment information forming means for forming the focus adjustment information by treating the plurality of distance measurements according to a predetermined algorithm, said focus adjustment information forming means taking into consideration the focal length in the course of the treatment according to the predetermined algorithm.
Claim 4
Dependent Claim
135 words
A focus adjustment information forming device in which a plurality of points on a picture plane defined by optical means on which the focus adjustment is to be performed are subject to a distance measurement to measure the distance from a detector, and information of the focus adjustment of said optical means is formed on the basis of results of the plurality of distance measurements, comprising: (A) focal length signal input means for inputting a focal length signal corresponding to the focal length of said optical means; and (B) focus adjustment information forming means for forming the focus adjustment information by treating the plurality of distance measurements according to a predetermined algorithm, said focus adjustment information forming means taking into consideration the focal length in the course of the treatment according to the predetermined algorithm.
Claim 5
Dependent Claim
36 words
A device according to claim 2, wherein said focus adjustment information forming means includes judgement means for judging whether or not a shortest distance of the plurality of distance measurements is shorter than a predetermined value.
Claim 6
Dependent Claim
53 words
A device according to claim 3, wherein said focus adjustment information forming means includes restriction means for restricting use of the shortest distance measurement result as the focus adjustment information in said focus adjustment information forming means when the shortest distance of the plural distance measurement results in shorter than the predetermined value.
Claim 7
Dependent Claim
56 words
A device according to claim 4, wherein said focus adjustment information forming means includes means for liberating the use of the shortest distance measurement result from the restriction means if the shortest distance measuring result is obtained from a central portion of the picture plane even when the shortest distance is shorter than the predetermined value.
Claim 8
Dependent Claim
50 words
A device according to claim 4, wherein said focus adjustment information forming means includes excluding means for excluding the use of the shortest distance measurement result from the formation of the focus adjustment information when the shortest distance of the plural distance measurement results in shorter than the predetermined value.
Claim 9
Dependent Claim
45 words
A device according to claim 6, wherein aid focus adjustment information forming means includes means for liberating the use of the shortest distance measurement result from said excluding means if the shortest distance measurement result is obtained from a central portion of the picture plane.
Claim 10
Dependent Claim
27 words
A device according to claim 3, wherein said focus adjustment information forming means includes means for varying the predetermined value in accordance with the focal length signal.
Claim 11
Dependent Claim
33 words
A device according to claim 8, wherein said varying means includes means for shifting the predetermined value toward a long distance value as the focal length signal becomes a long focal length signal.
Claim 12
Dependent Claim
27 words
A device according to claim 4, wherein said focus adjustment information forming means includes means for varying the predetermined value in accordance with the focal length signal.
Claim 13
Dependent Claim
33 words
A device according to claim 10, wherein said varying means includes means for shifting the predetermined value toward a long distance value as the focal length signal becomes a long focal length signal.
Claim 14
Dependent Claim
27 words
A device according to claim 5, wherein said focus adjustment information forming means includes means for varying the predetermined value in accordance with the focal length signal.
Claim 15
Dependent Claim
33 words
A device according to claim 12, wherein said varying means includes means for shifting the predetermined value toward a long distance value as the focal length signal becomes a long focal length signal.
Claim 16
Dependent Claim
27 words
A device according to claim 6, wherein said focus adjustment information forming means includes means for varying the predetermined value in accordance with the focal length signal.
Claim 17
Dependent Claim
33 words
A device according to claim 14, wherein said varying means includes means for shifting the predetermined value toward a long distance value as the focal length signal becomes a long focal length signal.
Claim 18
Dependent Claim
27 words
A device according to claim 7, wherein said focus adjustment information forming means includes means for varying the predetermined value in accordance with the focal length signal.
Claim 19
Dependent Claim
33 words
A device according to claim 16, wherein said varying means includes means for shifting the predetermined value toward a long distance value as the focal length signal becomes a long focal length signal.
Claim 20
Dependent Claim
23 words
A device according to claim 2, further comprising distance measuring means for measuring distances to the plurality of points on the picture plane.
Claim 21
Dependent Claim
29 words
A device according to claim 18, wherein said distance measuring means includes means for performing each distance measurement on the basis of an amount of defocus of an image.
Claim 22
Dependent Claim
30 words
A device according to claim 2, further comprising means for performing the focus adjustment of said optical means in response to an output of said focus adjustment information forming means.
Claim 23
Dependent Claim
38 words
A device according to claim 2, wherein said focus adjustment information forming means includes judging means for judging whether or not a distance measurement of a central portion of the picture plane is larger than a predetermined value.
Claim 24
Dependent Claim
53 words
A device according to claim 21, wherein said focus adjustment information forming means includes means for forming the focus adjustment information by preferentially using the shortest distance among the plurality of distance measurement results when the distance measurement result of the central portion of said picture plane is larger than said predetermined value.
Claim 25
Dependent Claim
27 words
A device according to claim 22, wherein said focus adjustment information forming means includes means for varying the predetermined value in accordance with the focal length signal.
Claim 26
Dependent Claim
33 words
A device according to claim 23, wherein said varying means includes means for shifting the predetermined value toward a long distance value as the focal length signal becomes a long focal length signal.
Claim 27
Dependent Claim
52 words
A device according to claim 21, wherein said focus adjustment information forming means includes means for forming the focus adjustment information by selecting the shortest distance among the plurality of distance measurement results when the distance measurement result of the central portion of the picture plane is larger than the predetermined value.
Claim 28
Dependent Claim
27 words
A device according to claim 24, wherein said focus adjustment information forming means includes means for varying the predetermined value in accordance with the focal length signal.
Claim 29
Dependent Claim
33 words
A device according to claim 26, wherein said varying means includes means for shifting the predetermined value toward a long distance value as the focal length signal becomes a long focal length signal.
Claim 30
Dependent Claim
55 words
A device according to claim 21, wherein said focus adjustment information forming means includes means for forming the focus adjustment information by preferentially using the distance measurement of the central portion of said picture plane when the distance measurement result of the central portion of the picture plane is not larger than the predetermined value.
Claim 31
Dependent Claim
27 words
A device according to claim 28, wherein said focus adjustment information forming means includes means for varying the predetermined value in accordance with the focal length signal.
Claim 32
Dependent Claim
33 words
A device according to claim 29, wherein said varying means includes means for shifting the predetermined value toward a long distance value as the focal length signal becomes a long focal length signal.
Claim 33
Dependent Claim
55 words
A device according to claim 21, wherein said focus adjustment information forming means includes means for forming the focus adjustment information by selecting the distance measurement result of the central portion of the picture plane when said distance measurement result of the central portion of the picture plane is not larger than the predetermined value.
Claim 34
Dependent Claim
27 words
A device according to claim 31, wherein said focus adjustment information forming means includes means for varying the predetermined value in accordance with the focal length signal.
Claim 35
Dependent Claim
33 words
A device according to claim 32, wherein said varying means includes means for shifting the predetermined value toward a long distance value as the focal length signal becomes a long focal length signal.
Claim 36
Dependent Claim
27 words
A device according to claim 21, wherein said focus adjustment information forming means includes means for varying the predetermined value in accordance with the focal length signal.
Claim 37
Dependent Claim
33 words
A device according to claim 34, wherein said varying means includes means for shifting the predetermined value toward a long distance value as the focal length signal becomes a long focal length signal.
Claim 38
Dependent Claim
34 words
A device according to claim 3, wherein said focus adjustment information forming means includes variable means for varying the predetermined value in accordance with the measured point to be judged by said judgment means.
Claim 39
Dependent Claim
59 words
A device according to claim 36, wherein said variable means includes means for changing the predetermined value to a shorter distance value when the measured point to be judged by said judgment means lies in a central portion of the picture plane than when the measured point to be judged lies in a marginal portion of the picture plane.
Claim 40
Dependent Claim
33 words
A device according to claim 3, wherein said focus adjustment information forming means includes variable means for varying the predetermined value to a shorter distance value when the optical means comprises a macro-lens.
Claim 41
Dependent Claim
51 words
A device according to claim 3, wherein said focus adjustment information forming means includes means for preferring a distance measurement result which is the second shortest distance measurement result for use in the formation of the focus adjustment information when the shortest distance measurement result is smaller than the predetermined value.
Claim 42
Dependent Claim
39 words
A device according to claim 2, wherein said focus adjustment information forming means includes means for reviewing a relationship between the measured points of the picture plane and their corresponding distance measurement results for forming the focus adjustment information.
Claim 43
Dependent Claim
68 words
A device according to claim 2, wherein said focus adjustment information forming means includes means for preferring the distance measurement result of a central portion of the picture plane for the formation of the focus adjustment information when the distance measurement results of the picture plane from a marginal portion of the picture plane to an opposite marginal portion shifts from a short distance to a long distance.
Claim 44
Dependent Claim
37 words
A device according to claim 2, wherein said focus adjustment information means includes means for judging whether or not it is possible to form the focus adjustment information on the basis of the plural distance measurement results.
Claim 45
Dependent Claim
98 words
A camera in which plural points on a picture plane are distance-measured and information regarding focus adjustment of photographic optical means is formed on the basis of a plurality of distance measurements, comprising: (A) focal length signal input means for inputting a focal length signal of the photographic optical means; and (B) focus adjustment information forming means for forming the focus adjustment information by treating the plurality of distance measurements according to a predetermined algorithm, said focus adjustment information forming means taking into consideration the focal length in the course of the treatment according to the predetermined algorithm.
Claim 46
Dependent Claim
98 words
A camera in which plural points on a picture plane are distance-measured and information regarding focus adjustment of photographic optical means is formed on the basis of a plurality of distance measurements, comprising: (A) focal length signal input means for inputting a focal length signal of the photographic optical means; and (B) focus adjustment information forming means for forming the focus adjustment information by treating the plurality of distance measurements according to a predetermined algorithm, said focus adjustment information forming means taking into consideration the focal length in the course of the treatment according to the predetermined algorithm.
Claim 47
Dependent Claim
35 words
A camera according to claim 43, wherein said focus adjustment information forming means includes judgment means for judging whether or not a shortest distance of the plural distance measurements is smaller than a predetermined value.
Claim 48
Dependent Claim
53 words
A camera according to claim 44, wherein said focus adjustment information forming means includes restriction means for restricting use of the shortest distance measurement result as the focus adjustment information in said focus adjustment information forming means when the shortest distance of the plural distance measurement results is smaller than the predetermined value.
Claim 49
Dependent Claim
58 words
A camera according to claim 45, wherein said focus adjustment information forming means includes means for liberating the use of the shortest distance measurement result from the restriction means if said shortest distance measurement result is obtained from a central portion of a field of object photography even when the shortest distance is smaller than the predetermined value.
Claim 50
Dependent Claim
27 words
A camera according to claim 46, wherein said focus adjustment information forming means includes means for varying the predetermined value in accordance with the focal length signal.
Claim 51
Dependent Claim
33 words
A camera according to claim 47, wherein said varying means includes means for shifting the predetermined value toward a long distance value as the focal length signal becomes a long focal length signal.
Claim 52
Dependent Claim
27 words
A camera according to claim 45, wherein said focus adjustment information forming means includes means for varying the predetermined value in accordance with the focal length signal.
Claim 53
Dependent Claim
32 words
A camera according to claim 49, wherein said varying means includes means for shifting the predetermined value toward a long distance value as the length signal becomes a long focal length signal.
Claim 54
Dependent Claim
50 words
A camera according to claim 45, wherein said focus adjustment information forming means includes excluding means for excluding the use of the shortest distance measurement result from the formation of the focus adjustment information when the shortest distance of the plural distance measurement results is shorter than the predetermined value.
Claim 55
Dependent Claim
47 words
A camera according to claim 51, wherein said focus adjustment information forming means includes means for liberating the use of the shortest distance measurement result from the excluding means if the shortest distance measurement result is obtained from a central portion of the field of object photography.
Claim 56
Dependent Claim
27 words
A camera according to claim 52, wherein said focus adjustment information forming means includes means for varying the predetermined value in accordance with the focal length signal.
Claim 57
Dependent Claim
33 words
A camera according to claim 53, wherein the varying means includes means for shifting the predetermined value toward a long distance value as the focal length signal becomes a long focal length signal.
Claim 58
Dependent Claim
27 words
A camera according to claim 51, wherein said focus adjustment information forming means includes means for varying the predetermined value in accordance with the focal length signal.
Claim 59
Dependent Claim
33 words
A camera according to claim 55, wherein said varying means includes means for shifting the predetermined value toward a long distance value as the focal length signal becomes a long focal length signal.
Claim 60
Dependent Claim
27 words
A camera according to claim 44, wherein said focus adjustment information forming means includes means for varying the predetermined value in accordance with the focal length signal.
Claim 61
Dependent Claim
33 words
A camera according to claim 57, wherein said varying means includes means for shifting the predetermined value toward a long distance value as the focal length signal becomes a long focal length signal.
Claim 62
Dependent Claim
35 words
A camera according to claim 44, wherein the focus adjustment information forming means includes variable means for varying said predetermined value in accordance with the distance measurement point to be judged by said judgment means.
Claim 63
Dependent Claim
65 words
A camera according to claim 59, wherein said variable means includes means for changing the predetermined value to a shorter distance value when the distance measurement point to be judged by said judgment means lies in a central portion of the field of object photography than when the distance measurement point to be judged lies in a marginal portion of the field of object photography.
Claim 64
Dependent Claim
34 words
A camera according to claim 44, wherein said focus adjustment information forming means includes variable means for varying the predetermined value to a shorter distance value when the photographic optical means comprises a macro-lens.
Claim 65
Dependent Claim
51 words
A camera according to claim 44, wherein said focus adjustment information forming means includes means for preferring a distance measurement result which is the second shortest distance measurement result for use in the formation of the focus adjustment information when the shortest distance measurement result is smaller than the predetermined value.
Claim 66
Dependent Claim
42 words
A camera according to claim 43, wherein said focus adjustment information forming means includes means for reviewing a relationship between the distance measurement points of a field of object photography and their corresponding distance measurement results for forming the focus adjustment information.
Claim 67
Dependent Claim
74 words
A camera according to claim 43, wherein said focus adjustment information forming means includes means for preferring the distance measurement result of a central portion of a field of object photography for the formation of the focus adjustment information when the distance measurement results of the field of object photography from a marginal portion of the field of object photography to an opposite marginal portion shifts from a short distance to a long distance.
Claim 68
Dependent Claim
38 words
A camera according to claim 43, wherein said focus adjustment information forming means includes means for judging whether or not it is possible to form the focus adjustment information on the basis of the plural distance measurement results.
Claim 69
Dependent Claim
25 words
A camera according to claim 43, further comprising distance measuring means for measuring distances to a plurality of points in a field of object photography.
Claim 70
Dependent Claim
29 words
A camera according to claim 66, wherein said distance measuring means includes means for performing each distance measurement on the basis of an amount of defocus of an image.
Claim 71
Dependent Claim
30 words
A camera according to claim 43, further comprising means for performing focus adjustment of the photographic optical means in response to an output of said focus adjustment information forming means.
Claim 72
Dependent Claim
40 words
A camera according to claim 43, wherein said focus adjustment information forming means includes judgment means for judging whether or not a distance measurement of a central portion of a field of object photography is larger than a predetermined value.
Claim 73
Dependent Claim
55 words
A camera according to claim 69, wherein said focus adjustment information forming means includes means for forming the focus adjustment information by preferentially using the shortest distance among the plurality of distance measurement results when the distance measurement result of the central portion of the field of object photography is longer than said predetermined value.
Claim 74
Dependent Claim
27 words
A camera according to claim 70, wherein said focus adjustment information forming means includes means for varying the predetermined value in accordance with the focal length signal.
Claim 75
Dependent Claim
33 words
A camera according to claim 71, wherein said varying means includes means for shifting the predetermined value toward a long distance value as the focal length signal becomes a long focal length signal.
Claim 76
Dependent Claim
54 words
A camera according to claim 69, wherein said focus adjustment information forming means includes means for forming the focus adjustment information by selecting the shortest distance among the plurality of distance measurement results when the distance measurement result of the central portion of the field of object photography is longer than the predetermined value.
Claim 77
Dependent Claim
27 words
A camera according to claim 73, wherein said focus adjustment information forming means includes means for varying the predetermined value in accordance with the focal length signal.
Claim 78
Dependent Claim
33 words
A camera according to claim 74, wherein said varying means includes means for shifting the predetermined value toward a long distance value as the focal length signal becomes a long focal length signal.
Claim 79
Dependent Claim
59 words
A camera according to claim 69, wherein said focus adjustment information forming means includes means for forming the focus adjustment information by preferentially using the distance measurement of the central portion of the field of object photography when the distance measurement result of the central portion of the field of object photography is not longer than the predetermined value.
Claim 80
Dependent Claim
27 words
A camera according to claim 76, wherein said focus adjustment information forming means includes means for varying the predetermined value in accordance with the focal length signal.
Claim 81
Dependent Claim
33 words
A camera according to claim 77, wherein said varying means includes means for shifting the predetermined value toward a long distance value as the focal length signal becomes a long focal length signal.
Claim 82
Dependent Claim
59 words
A camera according to claim 69, wherein said focus adjustment information forming means includes means for forming the focus adjustment information by selecting the distance measurement result of the central portion of the field of object photography when the distance measurement result of the central portion of the field of object photography is not longer than the predetermined value.
Claim 83
Dependent Claim
27 words
A camera according to claim 79, wherein said focus adjustment information forming means includes means for varying the predetermined value in accordance with the focal length signal.
Claim 84
Dependent Claim
33 words
A camera according to claim 80, wherein said varying means includes means for shifting the predetermined value toward a long distance value as the focal length signal becomes a long focal length signal.
Claim 85
Dependent Claim
27 words
A camera according to claim 69, wherein said focus adjustment information forming means includes means for varying the predetermined value in accordance with the focal length signal.
Claim 86
Dependent Claim
33 words
A device according to claim 82, wherein said varying means includes means for shifting the predetermined value toward a long distance value as the focal length signal becomes a long focal length signal.
Claim 87
Dependent Claim
133 words
A focus adjustment information forming device in which light from objects positioned corresponding to a plurality of points on a picture plane defined by optical means on which the focus adjustment is performed are received to form focus adjustment information of the optical means on the basis of results of the reception of light corresponding to the plurality of points on the picture plane, comprising: (A) focal length signal input means for inputting a signal corresponding to the focal length of said optical means; and (B) focus adjustment information forming means for forming the focus adjustment information by treating the results of the light receiving according to a predetermined algorithm, said focus adjustment information forming means taking into consideration the focal length in the course of the treatment according to the predetermined algorithm.
Claim 88
Dependent Claim
133 words
A focus adjustment information forming device in which light from objects positioned corresponding to a plurality of points on a picture plane defined by optical means on which the focus adjustment is performed are received to form focus adjustment information of the optical means on the basis of results of the reception of light corresponding to the plurality of points on the picture plane, comprising: (A) focal length signal input means for inputting a signal corresponding to the focal length of said optical means; and (B) focus adjustment information forming means for forming the focus adjustment information by treating the results of the light receiving according to a predetermined algorithm, said focus adjustment information forming means taking into consideration the focal length in the course of the treatment according to the predetermined algorithm.
Claim 89
Dependent Claim
27 words
A device according to claim 84, further comprising defocus state detecting means for obtaining a defocus state relative to the plurality of points on the picture plane.
Claim 90
Dependent Claim
34 words
A device according to claim 85, wherein said focus adjustment information forming means includes means for preferring a defocus state of a shortest distance among plural defocus states for forming the focus adjustment information.
Claim 91
Dependent Claim
40 words
A device according to claim 85, wherein said focus adjustment information forming means includes means for taking into consideration relations between the plurality of points on the picture plane and their respective defocus states for forming the focus adjustment information.
Claim 92
Dependent Claim
75 words
A device according to claim 85, wherein said focus adjustment information forming means includes means for preferring a defocus state of a central point on the picture plane for forming the focus adjustment information when the defocus states show the distance which is measured from the plurality of points to be increasing from a marginal portion on one side of the picture plane to a marginal portion on the other side of the picture plane.
Claim 93
Dependent Claim
37 words
A device according to claim 85, wherein said focus adjustment information forming means includes means for judging whether or not it is possible to form the focus adjustment information on the basis of the plural defocus states.
Claim 94
Dependent Claim
30 words
A device according to claim 84, further comprising means for performing the focus adjustment of said optical means in response to an output of said focus adjustment information forming means.
Claim 95
Dependent Claim
42 words
A device according to claim 84, wherein said focus adjustment information forming means includes means for taking into consideration positions of points on the picture plane on which the results of light receiving are sought for formation of the focus adjustment information.
Claim 96
Dependent Claim
107 words
A focus adjustment information forming device in which light from objects positioned in plural directions are received to form focus adjustment information for optical means on the basis of results of receiving the light from the plurality directions, comprising: (A) focal length signal input means for inputting a signal corresponding to the focal length of said optical means; and (B) focus adjustment information forming means for forming the focus adjustment information by treating the results of the light receiving according to a predetermined algorithm, said focus adjustment information forming means taking into consideration the focal length in the course of the treatment according to the predetermined algorithm.
Claim 97
Dependent Claim
107 words
A focus adjustment information forming device in which light from objects positioned in plural directions are received to form focus adjustment information for optical means on the basis of results of receiving the light from the plurality directions, comprising: (A) focal length signal input means for inputting a signal corresponding to the focal length of said optical means; and (B) focus adjustment information forming means for forming the focus adjustment information by treating the results of the light receiving according to a predetermined algorithm, said focus adjustment information forming means taking into consideration the focal length in the course of the treatment according to the predetermined algorithm.
Claim 98
Dependent Claim
24 words
A device according to claim 92, further comprising defocus state detecting means for obtaining a defocus state relative to the plurality of plural directions.
Claim 99
Dependent Claim
34 words
A device according to claim 93, wherein said focus adjustment information forming means includes means for preferring a defocus state of a shortest distance among plural defocus states for forming the focus adjustment information.
Claim 100
Dependent Claim
34 words
A device according to claim 93, wherein said focus adjustment information forming means includes means for taking into consideration relations between plural directions and their respective defocus states for forming the focus adjustment information.
Claim 101
Dependent Claim
76 words
A device according to claim 93, wherein said focus adjustment information forming means includes means for preferring a defocus state relative to a central direction on the picture plane for forming the focus adjustment information when the defocus states show the distance which is measured from the plurality of points to be increasing from a marginal portion on one side of the picture plane to a marginal portion on the other side of the picture plane.
Claim 102
Dependent Claim
37 words
A device according to claim 93, wherein said focus adjustment information forming means includes means for judging whether or not it is possible to form the focus adjustment information on the basis of said plural defocus states.
Claim 103
Dependent Claim
30 words
A device according to claim 92, further comprising means for performing the focus adjustment of said optical means in response to an output of said focus adjustment information forming means.
Claim 104
Dependent Claim
39 words
A device according to claim 92, wherein said focus adjustment information forming means includes means for taking into consideration positions of plural directions on which the results of light receiving are sought for formation of the focus adjustment information.
References Cited (Backward Citations)
US4080531A
Cited
US4257705A
Cited
US4687915A
Cited
US4688919A
Cited
US4843227A
Cited
US4943824A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1995-09-29 | 1996-03-30 | 1996-09-29 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1999-09-29 | 2000-03-30 | 2000-09-29 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 2003-09-29 | 2004-03-30 | 2004-09-29 | $7700.00 | Window Closed / Lapsed |