US4731629A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Control device for exposure-with-zooming photography
Assignee: Canon Inc
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Filing: 1986-04-02
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Granted: 1988-03-15
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Expires: 2006-04-02
Abstract
Abstract In the camera having a zoom lens with an automatic operating mechanism therefor, a device for controlling co-ordination of the mechanism with a shutter, comprises an exposure-with-zooming actuator arranged upon first stroke to actuate the mechanism so that the zoom lens is set in one of the terminal ends of movement thereof, and upon second stroke to initiate a zooming operation of the zoom lens by the mechanism, and control means responsive to start of the zooming for initiating an exposure operation of the shutter to a photographic film.
Inventors
- 👤 Chikara Aoshima
- 👤 Yasuhiko Shiomi
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-08 18:22
CPC Classifications
G; G02; G02B; G02B7/00; G02B7/02; G02B7/04; G02B7/10; G03; G03B; G03B3/00; G03B3/10
Claims Analysis
Total Claims: 24
Claim 1
Independent Claim
51 words
A control device for exposure-with-zooming photography, comprising: (a) a focal length variable photographic optical system; (b) drive means for varying the focal length of said photographic optical system; (c) exposure means for performing an exposure operation; and (d) operating means for rendering operative said drive means and said exposure means simultaneously.
Claim 2
Dependent Claim
51 words
A control device for exposure-with-zooming photography, comprising: (a) a focal length variable photographic optical system; (b) drive means for varying the focal length of said photographic optical system; (c) exposure means for performing an exposure operation; and (d) operating means for rendering operative said drive means and said exposure means simultaneously.
Claim 3
Dependent Claim
19 words
A device according to claim 1, wherein said focal length variable photographic optical system includes a zoom optical system.
Claim 4
Dependent Claim
13 words
A device according to claim 1, wherein said drive means includes bias means.
Claim 5
Dependent Claim
23 words
A device according to claim 3, further comprising charge means for charging said bias means in response to operation of said operating means.
Claim 6
Dependent Claim
14 words
A device according to claim 4, wherein said charge means includes motorized driving means.
Claim 7
Dependent Claim
64 words
A control device for exposure-with-variable magnification photogrpahy, comprising: (a) a focal length variable photographic optical system; (b) drive means for varying the focal length of said photographic optical system; (c) exposure means for performing an exposure operation; (d) operating means for rendering operative said drive means and said exposure means simultaneously; and (e) prohibition means for selectively prohibiting the operation of said operation means.
Claim 8
Dependent Claim
64 words
A control device for exposure-with-variable magnification photogrpahy, comprising: (a) a focal length variable photographic optical system; (b) drive means for varying the focal length of said photographic optical system; (c) exposure means for performing an exposure operation; (d) operating means for rendering operative said drive means and said exposure means simultaneously; and (e) prohibition means for selectively prohibiting the operation of said operation means.
Claim 9
Dependent Claim
19 words
A device according to claim 6, wherein said focal length variable photographic optical system includes a zoom optical system.
Claim 10
Dependent Claim
13 words
A device according to claim 6, wherein said drive means includes bias means.
Claim 11
Dependent Claim
17 words
A control device according to claim 8, further comprising electric drive means for charging the bias means.
Claim 12
Dependent Claim
23 words
A control device according to claim 9, wherein said electric drive means includes means for driving the photographic optical system with variable magnification.
Claim 13
Dependent Claim
82 words
A control device for exposure-with-variable magnification photography, comprising: (a) drive means for varying a focal length of a photographic optical system; (b) exposure means for performing an exposure operation; (c) change-over means for changing over the drive means beween a first mode, in which said exposure means is made operative during the drive of the drive means, and a second mode, in which the drive of said drive means and the operation of said exposure means are performed independently from each other.
Claim 14
Dependent Claim
82 words
A control device for exposure-with-variable magnification photography, comprising: (a) drive means for varying a focal length of a photographic optical system; (b) exposure means for performing an exposure operation; (c) change-over means for changing over the drive means beween a first mode, in which said exposure means is made operative during the drive of the drive means, and a second mode, in which the drive of said drive means and the operation of said exposure means are performed independently from each other.
Claim 15
Dependent Claim
20 words
A control device according to claim 11, wherein said focal length variable photographic optical system includes a zoom optical system.
Claim 16
Dependent Claim
13 words
A device according to claim 11, wherein said drive means include bias means.
Claim 17
Dependent Claim
17 words
A control device according to claim 13, further comprising electric drive means for charging the bias means.
Claim 18
Dependent Claim
23 words
A control device according to claim 14, wherein said electric drive means includes means for driving the photographic optical system with variable magnification.
Claim 19
Dependent Claim
62 words
A control device for exposure-with-variable magnification photography, comprising: (a) drive means for varying a focal length of a photographic optical system; (b) exposure means for performing an exposure operation; (c) setting means for setting the drive means so as to cause the exposure means to operate during the drive of the drive means; and (d) release means for releasing the setting means.
Claim 20
Dependent Claim
62 words
A control device for exposure-with-variable magnification photography, comprising: (a) drive means for varying a focal length of a photographic optical system; (b) exposure means for performing an exposure operation; (c) setting means for setting the drive means so as to cause the exposure means to operate during the drive of the drive means; and (d) release means for releasing the setting means.
Claim 21
Dependent Claim
20 words
A control device according to claim 16, wherein said focal length variable photographic optical system includes a zoom optical system.
Claim 22
Dependent Claim
13 words
A device according to claim 16, wherein said drive means includes bias means.
Claim 23
Dependent Claim
16 words
A control device according to claim 18, further comprising electric drive for chraging the bias means.
Claim 24
Dependent Claim
23 words
A control device according to claim 19, wherein said electric drive means includes means for driving the photographic optical system with variable magnification.
References Cited (Backward Citations)
US4284336A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1991-03-15 | 1991-09-14 | 1992-03-15 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1995-03-15 | 1995-09-14 | 1996-03-15 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1999-03-15 | 1999-09-14 | 2000-03-15 | $7700.00 | Window Closed / Lapsed |