Patent US5418596A successfully refreshed from Google Patents.
US5418596A
Expired / Lapsed
US
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Photometry apparatus in a camera
Assignee: Nikon Corp
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Filing: 1993-10-28
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Granted: 1995-05-23
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Expires: 2013-10-28
Abstract
Abstract An apparatus for performing photometry on a photographic subject image divided into plural regions, which eliminates the negative effects on photometry caused by an illumination source which provides auxiliary lighting. The illumination source for providing auxiliary lighting illuminates a portion of the photographic subject. When it is detected that photometry is being performed, illumination by the illumination source may be inhibited such that the brightness of the subject does not suddenly change, thereby adversely effecting photometry. Conversely, when the commencement of the action of the illumination source is detected, photometry may be inhibited such that the change in brightness due to the illumination source has no effect on the photometry. When a portion of the photographic subject has been illuminated by the illumination source during photometry this situation is detected, and the photometric result is corrected to compensate for the effect of the illumination source on photometry.
Inventors
- 👤 Tetsuro Goto
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-09 13:39
CPC Classifications
G; G03; G03B; G03B7/00; G03B7/08; G03B7/099; G03B7/0993; G03B7/0997; G03B7/09979
Claims Analysis
Total Claims: 21
Claim 1
Independent Claim
76 words
A camera provided with a photometric device, comprising: a light receiving sensor to perform photometric measurement in plural regions of a subject image; an illumination source to illuminate a portion of the subject; a detection device to detect whether the light receiving sensor is performing photometric measurement; and a control unit to control the illumination source, based upon a detection made by the detection device, to eliminate influence of the illumination source on the photometric measurement.
Claim 2
Dependent Claim
76 words
A camera provided with a photometric device, comprising: a light receiving sensor to perform photometric measurement in plural regions of a subject image; an illumination source to illuminate a portion of the subject; a detection device to detect whether the light receiving sensor is performing photometric measurement; and a control unit to control the illumination source, based upon a detection made by the detection device, to eliminate influence of the illumination source on the photometric measurement.
Claim 3
Dependent Claim
89 words
A camera provided with a photometric device, comprising: a light receiving sensor to perform photometric measurement in plural regions of a subject image; an illumination source to illuminate a portion of the subject; a detection device to detect whether the light receiving sensor is performing photometric measurement; and a control unit to control the illumination source based upon a detection made by the detection device, wherein the control unit inhibits illumination by the illumination source when the detection device detects that the light receiving sensor is performing photometric measurement.
Claim 4
Dependent Claim
89 words
A camera provided with a photometric device, comprising: a light receiving sensor to perform photometric measurement in plural regions of a subject image; an illumination source to illuminate a portion of the subject; a detection device to detect whether the light receiving sensor is performing photometric measurement; and a control unit to control the illumination source based upon a detection made by the detection device, wherein the control unit inhibits illumination by the illumination source when the detection device detects that the light receiving sensor is performing photometric measurement.
Claim 5
Dependent Claim
20 words
The photometric device, as recited in claim 2, wherein the light receiving sensor is divided into a plurality of segments.
Claim 6
Dependent Claim
84 words
A camera provided with a photometric device, comprising: a light receiving sensor to perform photometric measurement in plural regions of a subject image; an illumination source to illuminate a portion of a subject; a detection device to detect whether the illumination source is illuminating a portion of the subject; and a control unit to control the light receiving sensor, based upon a detection made by the detection device, to eliminate influence of the illumination source on the photometric measurement by the light receiving sensor.
Claim 7
Dependent Claim
84 words
A camera provided with a photometric device, comprising: a light receiving sensor to perform photometric measurement in plural regions of a subject image; an illumination source to illuminate a portion of a subject; a detection device to detect whether the illumination source is illuminating a portion of the subject; and a control unit to control the light receiving sensor, based upon a detection made by the detection device, to eliminate influence of the illumination source on the photometric measurement by the light receiving sensor.
Claim 8
Dependent Claim
97 words
A camera provided with a photometric device, comprising: a light receiving sensor to perform photometric measurement in plural regions of a subject image; an illumination source to illuminate a portion of a subject; a detection device to detect whether the illumination source is illuminating a portion of the subject; and a control unit to control the light receiving sensor based upon a detection made by the detection device, wherein the control unit inhibits the light receiving sensor from performing photometric measurement when the detection device detects that the illumination source is illuminating a portion of the subject.
Claim 9
Dependent Claim
97 words
A camera provided with a photometric device, comprising: a light receiving sensor to perform photometric measurement in plural regions of a subject image; an illumination source to illuminate a portion of a subject; a detection device to detect whether the illumination source is illuminating a portion of the subject; and a control unit to control the light receiving sensor based upon a detection made by the detection device, wherein the control unit inhibits the light receiving sensor from performing photometric measurement when the detection device detects that the illumination source is illuminating a portion of the subject.
Claim 10
Dependent Claim
20 words
The photometric device, as recited in claim 5, wherein the light receiving sensor is divided into a plurality of segments.
Claim 11
Dependent Claim
81 words
A camera provided with a photometric device, comprising: a light receiving sensor to perform photometric measurement in plural regions of a subject image; an illumination source to illuminate a portion of a subject; a detection device to detect whether the illumination source is illuminating the subject while the photometric measurement is being performed; and a correction unit to correct a photometric output of the light receiving sensor when the detection device has detected illumination of the subject during a photometric measurement.
Claim 12
Dependent Claim
81 words
A camera provided with a photometric device, comprising: a light receiving sensor to perform photometric measurement in plural regions of a subject image; an illumination source to illuminate a portion of a subject; a detection device to detect whether the illumination source is illuminating the subject while the photometric measurement is being performed; and a correction unit to correct a photometric output of the light receiving sensor when the detection device has detected illumination of the subject during a photometric measurement.
Claim 13
Dependent Claim
20 words
The photometric device, as recited in claim 7, wherein the light receiving sensor is divided into a plurality of segments.
Claim 14
Dependent Claim
23 words
The photometric device, as recited in claim 7, wherein the illumination source is an auxiliary light generating source used to facilitate focus detection.
Claim 15
Dependent Claim
24 words
The photometric device, as recited in claim 7, wherein the illumination source is an auxiliary light generating source which generates light to prevent red-eye.
Claim 16
Dependent Claim
24 words
The photometric device, as recited in claim 7, wherein the correction unit performs correction according to the distance of the subject from the camera.
Claim 17
Dependent Claim
36 words
The photometric device, as recited in claim 11, wherein at least one of a region in which correction is performed and an amount of correction change according to the distance of the subject to the camera.
Claim 18
Dependent Claim
26 words
The photometric device, as recited in claim 7, wherein the correction unit performs correction according to a zoom ratio of a photographic lens in the camera.
Claim 19
Dependent Claim
38 words
The photometric device, as recited in claim 13, wherein at least one of a region in which correction is performed and an amount of correction change according to the zoom ratio of the photographic lens in the camera.
Claim 20
Dependent Claim
79 words
A camera provided with a photometric device, comprising: a light receiving sensor; an illumination source; a detection device to detect whether the light receiving sensor and the illumination source operate at the same time; and a control unit to control the camera to prevent the illumination from the illumination source from affecting the photometric measurement by the light receiving sensor when the detection device detects that the light receiving sensor and the illumination source operate at the same time.
Claim 21
Dependent Claim
79 words
A camera provided with a photometric device, comprising: a light receiving sensor; an illumination source; a detection device to detect whether the light receiving sensor and the illumination source operate at the same time; and a control unit to control the camera to prevent the illumination from the illumination source from affecting the photometric measurement by the light receiving sensor when the detection device detects that the light receiving sensor and the illumination source operate at the same time.
References Cited (Backward Citations)
US3601022A
Cited
US4690538A
Cited
US4782357A
Cited
US4984005A
Cited
US5023649A
Cited
US4984006A
Cited
US5115269A
Cited
US5268730A
Cited
JPH04215631A
Cited
JPH04251230A
Cited
US5231447A
Cited
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| 7.5 Years (Year 8) | 2002-05-22 | 2002-11-21 | 2003-05-23 | $3760.00 | Window Closed / Lapsed |
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