US5245371A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Camera provided with a visual axis direction detecting portion
Assignee: Canon Inc
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Filing: 1992-02-07
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Granted: 1993-09-14
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Expires: 2012-02-07
Abstract
Abstract A camera is provided with observation means for observing a scene therethrough, a visual axis detecting device for detecting the visual axis direction of the eye of an operator looking into the observation means, an information receiving device for receiving the information of an objective lens, and a control device for making the control of the visual axis detecting device differ on the basis of a signal from the information receiving device.
Inventors
- 👤 Akihiko Nagano
- 👤 Akira Yamada
- 👤 Kazuki Konishi
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-04 09:17
CPC Classifications
G; G03; G03B; G03B13/00; G03B13/02; G02; G02B; G02B7/00; G02B7/28; G02B7/287; H; H04; H04N; H04N23/00; H04N23/60; H04N23/63; H04N23/633; H04N23/635; H04N23/67; H04N23/675; G03B2213/00; G03B2213/02; G03B2213/025
Claims Analysis
Total Claims: 22
Claim 1
Independent Claim
67 words
A camera comprising: observation means for observing a scene therethrough; visual axis detecting means for detecting the visual axis direction of the eye of an operator looking into said observation means; information receiving means for receiving the information of an objective lens; and control means for making the control of said visual axis detecting means differ on the basis of a signal from said information receiving means.
Claim 2
Dependent Claim
67 words
A camera comprising: observation means for observing a scene therethrough; visual axis detecting means for detecting the visual axis direction of the eye of an operator looking into said observation means; information receiving means for receiving the information of an objective lens; and control means for making the control of said visual axis detecting means differ on the basis of a signal from said information receiving means.
Claim 3
Dependent Claim
31 words
A camera according to claim 1, wherein the information of said objective lens relates to the focal length thereof, and said control means varies the effective area of visual axis detection.
Claim 4
Dependent Claim
34 words
A camera according to claim 1, wherein the information of said objective lens relates to the focal length thereof, and said control means varies a threshold value for judging the principal visual axis direction.
Claim 5
Dependent Claim
14 words
A camera according to claim 2, wherein said objective lens is a zoom lens.
Claim 6
Dependent Claim
14 words
A camera according to claim 3, wherein said objective lens is a zoom lens.
Claim 7
Dependent Claim
14 words
A camera according to claim 2, wherein said objective lens is an interchangeable lens.
Claim 8
Dependent Claim
14 words
A camera according to claim 3, wherein said objective lens is an interchangeable lens.
Claim 9
Dependent Claim
24 words
A camera according to claim 1, wherein the information of said objective lens shows that said lens is a lens of a predetermined type.
Claim 10
Dependent Claim
21 words
A camera according to claim 8, wherein said control means prohibits said visual axis detecting means from detecting the visual axis.
Claim 11
Dependent Claim
18 words
A camera according to claim 8, wherein said control means varies the effective area of visual axis detection.
Claim 12
Dependent Claim
72 words
A camera comprising: observation means for observing a scene therethrough; visual axis detecting means for detecting the visual axis direction of the eye of an operator looking into said observation means; an objective lens the focal length of which can be varied; an actuator for varying the focal length of said objective lens; and control means for controlling said actuator on the basis of the output of said visual axis detecting means.
Claim 13
Dependent Claim
72 words
A camera comprising: observation means for observing a scene therethrough; visual axis detecting means for detecting the visual axis direction of the eye of an operator looking into said observation means; an objective lens the focal length of which can be varied; an actuator for varying the focal length of said objective lens; and control means for controlling said actuator on the basis of the output of said visual axis detecting means.
Claim 14
Dependent Claim
39 words
A camera according to claim 11, wherein said control means determines the tendency of the focal length on the basis of the distribution of the visual axis detected by said visual axis detecting means during a predetermined detection time.
Claim 15
Dependent Claim
47 words
A camera according to claim 12, wherein when the distribution of the visual axis spreads over the entire image field, the focal length is set to the wide-angle side, and when the distribution of the visual axis converges, the focal legnth is set to the telephoto side.
Claim 16
Dependent Claim
93 words
A camera having an objective lens removably mounted thereon or second thereto, said camera comprising: observation means for observing a scene through said objective lens; visual axis detecting means for detecting the visual axis direction of the eye of an operator looking into said observation means; information receiving means for receiving the information of said objective lens; and control means for changing a judgement condition in a signal processing process for determining the visual axis direction in said visual axis detecting means on the basis of a signal from said information receiving means.
Claim 17
Dependent Claim
93 words
A camera having an objective lens removably mounted thereon or second thereto, said camera comprising: observation means for observing a scene through said objective lens; visual axis detecting means for detecting the visual axis direction of the eye of an operator looking into said observation means; information receiving means for receiving the information of said objective lens; and control means for changing a judgement condition in a signal processing process for determining the visual axis direction in said visual axis detecting means on the basis of a signal from said information receiving means.
Claim 18
Dependent Claim
31 words
A camera according to claim 14, wherein the information of said objective lens relates to the focal length thereof, and said control means varies the effective area of visual axis detection.
Claim 19
Dependent Claim
34 words
A camera according to claim 14, wherein the information of said objective lens relates to the focal length thereof, and said control means varies a threshold value for judging the principal visual axis direction.
Claim 20
Dependent Claim
24 words
A camera according to claim 14, wherein the information of said objective lens shows that said lens is a lens of a predetermined type.
Claim 21
Dependent Claim
21 words
A camera according to claim 17, wherein said control means prohibits said visual axis detecting means from detecting the visual axis.
Claim 22
Dependent Claim
18 words
A camera according to claim 17, wherein said control means varies the effective area of visual axis detection.
References Cited (Backward Citations)
JPS61172552A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1996-09-13 | 1997-03-15 | 1997-09-14 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 2000-09-13 | 2001-03-15 | 2001-09-14 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 2004-09-13 | 2005-03-15 | 2005-09-14 | $7700.00 | Window Closed / Lapsed |