Patent US1193807A successfully refreshed from Google Patents.
Patent US3541581A successfully refreshed from Google Patents.
US4411505A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Camera
Assignee: Canon Inc
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Filing: 1982-03-16
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Granted: 1983-10-25
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Expires: 2002-03-16
Abstract
Abstract The invention provides a camera which uses a signal integrating and accumulating type image sensor for receiving light from a photographing optical system prior to the photographing operation and for producing an output which can be utilized for a predetermined purpose, with the integrating time of the image sensor being controlled in accordance with the output from the image sensor. According to the improvements of the present invention, the signal integrating time of the image sensor is fixed, in association with the photographing operation, at the value of that of the integrating operation just before the photographing operation.
Inventors
- 👤 Shinji Sakai
- 👤 Nobuhiko Shinoda
- 👤 Kazuya Hosoe
- 👤 Takao Kinoshita
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-23 11:25
CPC Classifications
G; G03; G03B; G03B3/00; G03B3/10
Claims Analysis
Total Claims: 28
Claim 1
Independent Claim
189 words
A camera, comprising: focusing adjustable lens means for forming an image of an object on a predetermined focal plane; an exposure system for exposing a film disposed at said focal plane to light from said lens means; a focus detecting system for detecting the focus state of said lens means with respect to the object, said focus detecting system including: signal integration type image sensing means being arranged to receive light from said lens means, said sensing means having a plurality of sensing elements for producing electrical signals representative of the integration of intensity of respective light distribution portions during a controlled signal integration time; circuit means for processing the electrical signals provided by said image sensing means to produce an output indicative of the focus state of said lens means with respect to the object; and signal integration time control means for controlling said signal integration time of said image sensing means; and inhibit means associated with said exposure system, for inhibiting the change of said signal integration time controlled by said signal integration time control means in response to the film exposure operation of said exposure system.
Claim 2
Dependent Claim
189 words
A camera, comprising: focusing adjustable lens means for forming an image of an object on a predetermined focal plane; an exposure system for exposing a film disposed at said focal plane to light from said lens means; a focus detecting system for detecting the focus state of said lens means with respect to the object, said focus detecting system including: signal integration type image sensing means being arranged to receive light from said lens means, said sensing means having a plurality of sensing elements for producing electrical signals representative of the integration of intensity of respective light distribution portions during a controlled signal integration time; circuit means for processing the electrical signals provided by said image sensing means to produce an output indicative of the focus state of said lens means with respect to the object; and signal integration time control means for controlling said signal integration time of said image sensing means; and inhibit means associated with said exposure system, for inhibiting the change of said signal integration time controlled by said signal integration time control means in response to the film exposure operation of said exposure system.
Claim 3
Dependent Claim
38 words
The camera according to claim 1, wherein said inhibit means prevents, upon film exposure by said exposure system, the integration time from being changed from the value which has been set by said signal integration time control means.
Claim 4
Dependent Claim
67 words
The camera according to claim 2, wherein said signal integration time control means is arranged to select an appropriate signal integration time out of a plurality of predetermined different integration times; and said inhibit means is arranged to prevent, upon film exposure by said exposure system, the signal integration time from being changed from the value which has been selected by said signal integration time control means.
Claim 5
Dependent Claim
41 words
The camera according to claim 3, wherein said signal integration time control means is arranged to select the appropriate time out of the plurality of predetermined different times on the basis of the electrical signals provided by said image sensing means.
Claim 6
Dependent Claim
65 words
The camera according to claim 1, 2, 3 or 4, wherein said exposure system includes: an exposure mechanism for exposing the film to the light; and trigger means for triggering said exposure mechanism for the film exposure: and said inhibit means is arranged to inhibit the change of said signal integration time in response to the triggering of said exposure mechanism by said trigger means.
Claim 7
Dependent Claim
66 words
The camera according to claim 1, 2, 3 or 4, wherein said exposure system includes; an exposure mechanism operable for exposing the film to the light; and trigger means for triggering said exposure mechanism for the film exposure; and said inhibit means is arranged to inhibit the change of said signal integration time in response to the operation of said exposure mechanism for the film exposure.
Claim 8
Dependent Claim
50 words
The camera according to claim 6, wherein said exposure mechanism includes: a view finder mirror adapted to move out of an optical path between said lens means and the film for the film exposure; and said inhibit means is arranged to respond to the movement of said view finder mirror.
Claim 9
Dependent Claim
27 words
The camera according to claim 7, wherein said image sensing means in said focus detecting system is arranged to receive the light by said view finder mirror.
Claim 10
Dependent Claim
64 words
The camera according to claim 8, wherein said focus detecting system further includes: an auxiliary mirror for causing the light coming through said view finder mirror to impinge on said image sensing means, said auxiliary mirror being movable in synchronism with said view finder mirror to move out of said optical path causing said image sensing means to be prevented from receiving the light.
Claim 11
Dependent Claim
55 words
The camera according to claim 5, wherein said exposure mechanism includes: a view finder mirror adapted to move out of an optical path between said lens means and the film for the film exposure; and said image sensing means in said focus detecting system is arranged to receive the light by said view finder mirror.
Claim 12
Dependent Claim
64 words
The camera according to claim 10, wherein said focus detecting system further includes: an auxiliary mirror for causing the light coming through said view finder mirror to impinge on said image sensing means, said auxiliary mirror being movable in synchronism with said view finder mirror to move out of said optical path causing said image sensing means to be prevented from receiving the light.
Claim 13
Dependent Claim
60 words
The camera according to claim 1, 2, 3 or 4, wherein said exposure system includes: a view finder mirror adapted to move out of an optical path between said lens means and the film for the film exposure; and p1 said image sensing means in said focus detecting system is arranged to receive the light by said view finder mirror.
Claim 14
Dependent Claim
64 words
The camera according to claim 12, wherein said focus detecting system further includes: an auxiliary mirror for causing the light coming through said view finder mirror to impinge on said image sensing means, said auxiliary mirror being movable in synchronism with said view finder mirror to move out of the optical path causing said image sensing means to be prevented from receiving the light.
Claim 15
Dependent Claim
26 words
The camera according to claim 7, wherein said inhibit means is arranged to cause said signal integration time control means to fix the signal integration time.
Claim 16
Dependent Claim
26 words
The camera according to claim 6, wherein said inhibit means is arranged to cause said signal integration time control means to fix the signal integration time.
Claim 17
Dependent Claim
26 words
The camera according to claim 5, wherein said inhibit means is arranged to cause said signal integration time control means to fix the signal integration time.
Claim 18
Dependent Claim
30 words
The camera according to claim 1, 2, 3 or 4, wherein said inhibit means is arranged to cause said signal integration time control means to fix the signal integration time.
Claim 19
Dependent Claim
98 words
A camera, comprising: lens means for taking a picture of an object; signal integration type radiation sensing means being arranged to receive radiation coming through said lens means; circuit means for processing output signals of said sensing means to produce an output related to the picture of the object; integration period control means for controlling an integration period during which said sensing means integrates signals in response to the received radiation; and inhibit means for inhibiting the changing of said integration period controlled by the integration period control means in response to the picture-taking operation of the camera.
Claim 20
Dependent Claim
98 words
A camera, comprising: lens means for taking a picture of an object; signal integration type radiation sensing means being arranged to receive radiation coming through said lens means; circuit means for processing output signals of said sensing means to produce an output related to the picture of the object; integration period control means for controlling an integration period during which said sensing means integrates signals in response to the received radiation; and inhibit means for inhibiting the changing of said integration period controlled by the integration period control means in response to the picture-taking operation of the camera.
Claim 21
Dependent Claim
34 words
The camera according to claim 18, wherein said inhibit means is arranged to prevent, upon picture-taking, the integration period from being changed from that which has been set by said integration period control means.
Claim 22
Dependent Claim
55 words
The camera according to claim 19, wherein said integration period control means is arranged to select an appropriate integration period out of a plurality of different periods; and said inhibit means is arranged to prevent, upon picture-taking, the integration period from being changed from that which has been selected by said integration period control means.
Claim 23
Dependent Claim
38 words
The camera according to claim 20, wherein said integration period control means is arranged to select said appropriate integration period out of the plurality of different periods on the basis of the output signal of said sensing means.
Claim 24
Dependent Claim
28 words
The camera according to claim 18, 19, 20 or 21, wherein said inhibit means is arranged to cause said integration period control means to fix the integration period.
Claim 25
Dependent Claim
47 words
The camera according to claim 22, further comprising: trigger means for actuating the picture-taking operation of the camera; said inhibit means being arranged to inhibit the changing of the integration period in response to the actuation of said picture-taking operation of the camera by the trigger means.
Claim 26
Dependent Claim
36 words
The camera according to claim 22, further comprising: means movable for taking the picture; said inhibit means being arranged to inhibit the changing of the integration period in response to the movement of said movable means.
Claim 27
Dependent Claim
51 words
The camera according to claim 18, 19, 20 or 21, further comprising: trigger means for actuating the picture-taking operation of the camera; said inhibit means being arranged to inhibit the changing of the integration period in response to the actuation of said picture-taking operation of the camera by the trigger means.
Claim 28
Dependent Claim
40 words
The camera according to claim 18, 19, 20 or 21, further comprising: means movable for taking the picture; said inhibit means being arranged to inhibit the changing of the integration period in response to the movement of said movable means.
References Cited (Backward Citations)
US4341953A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1986-10-24 | 1987-04-25 | 1987-10-25 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1990-10-24 | 1991-04-25 | 1991-10-25 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1994-10-24 | 1995-04-25 | 1995-10-25 | $7700.00 | Window Closed / Lapsed |