Patent US4777506A successfully refreshed from Google Patents.
US4777506A
Expired / Lapsed
US
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Camera having an assembling adjusting device
Assignee: Canon Inc
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Filing: 1987-07-27
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Granted: 1988-10-11
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Expires: 2007-07-27
Abstract
Abstract A camera having an assembling adjusting device comprises a casing for a camera body, a photo-sensor disposed in the casing to receive an object image, a relay optical system for relaying a light beam from the object, a holder arranged in the casing to hold the relay optical system, a photo-sensor array for producing a focus detection signal in response to a focusing light from the relay optical system, a package for accommodating the photo-sensor array, a coupler for coupling the package to the holder, and compensation means for adjusting an attitude of the package to the holder to compensate for an inclination of the photo-sensor array plane to the focusing light.
Inventors
- 👤 Akira Hiramatsu
- 👤 Akira Ishizaki
- 👤 Keiji Ohtaka
- 👤 Akira Akashi
- 👤 Yasuo Suda
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-06 09:57
CPC Classifications
G; G02; G02B; G02B7/00; G02B7/28; G02B7/36; G03; G03B; G03B7/00; G03B7/08; G03B7/099; G03B7/0993; G03B7/0997; G03B7/09971; G03B7/09972
Claims Analysis
Total Claims: 15
Claim 1
Independent Claim
114 words
A focus detection apparatus for detecting a focus adjusting state of an objective lens comprising: optical means for receiving light passing through the objective lens to form a plurality of light patterns corresponding to an image of an object; sensing means having a plurality of photosensors for sensing said light patterns to generate a signal corresponding to the focus adjusting state of the objective lens, said sensing means including a photosensing plane; holding means for holding said optical means; and inclination means for inclining the photosensing plane of said sensing means with respect to said holding means to change the incident angle of the light flux from said optical means into said photosensing plane.
Claim 2
Dependent Claim
114 words
A focus detection apparatus for detecting a focus adjusting state of an objective lens comprising: optical means for receiving light passing through the objective lens to form a plurality of light patterns corresponding to an image of an object; sensing means having a plurality of photosensors for sensing said light patterns to generate a signal corresponding to the focus adjusting state of the objective lens, said sensing means including a photosensing plane; holding means for holding said optical means; and inclination means for inclining the photosensing plane of said sensing means with respect to said holding means to change the incident angle of the light flux from said optical means into said photosensing plane.
Claim 3
Dependent Claim
27 words
Apparatus according to claim 1, further comprising light distribution means for distributing a light beam corresponding to said object image to observation means and said optical means.
Claim 4
Dependent Claim
27 words
Apparatus according to claim 1, wherein said optical means forms a plurality of light patterns having parallax with respect to said image formed by said objective lens.
Claim 5
Dependent Claim
17 words
Apparatus system according to claim 1, wherein said inclination means is a plate having non-parallel, opposite sides.
Claim 6
Dependent Claim
18 words
Apparatus according to claim 4, wherein said plate is circular and has teeth formed on a periphery thereof.
Claim 7
Dependent Claim
61 words
Apparatus system according to claim 1, further comprising a casing, wherein said holding means comprises a holder arranged in said casing for holding said optical means, wherein said apparatus further comprises a package for accommodating said sensing means, and coupling means for coupling said package to said holder, said coupling means being a spring for urging said package to said holder.
Claim 8
Dependent Claim
26 words
Apparatus according to claim 1, further comprising compensation means for compensating for a bias of said optical means to an optical axis of said objective lens.
Claim 9
Dependent Claim
33 words
Apparatus according to claim 7, wherein said compensation means tilts said optical means independently around orthogonal axes normal to a direction of the optical axis of said objective lens entering said optical means.
Claim 10
Dependent Claim
32 words
Apparatus according to claim 8, wherein said axes normal to a direction of the optical axis of said objective lens are located adjacent to an anticipated focal plane of said optical means.
Claim 11
Dependent Claim
29 words
Apparatus according to claim 1, said holding means comprising a holder for holding said optical means and blocking undesirable light directed to said optical means and said sensing means.
Claim 12
Dependent Claim
19 words
Apparatus according to claim 10, wherein said holder has an aperture for restricting light impinging on said sensing means.
Claim 13
Dependent Claim
141 words
A camera body having an apparatus for detecting a focus adjusting state of an objective lens, comprising: a finder; photo-sensing means for sensing an image formed by an objective lens; a multiple-image forming optical system for relaying the image formed by said objective lens and forming a plurality of images having parallax; light distribution means for distributing the image formed by said objective lens to said finder, said photo-sensing means and said multiple-image forming optical system; photo-electric conversion means having a number of photo-sensors for detecting the multiple images; tilt means for tilting said multiple-image forming optical system around an axis normal to a predetermined optical axis of said objective lens through said light distribution means; and inclination means for inclining an incident plane of said photo-electric conversion means with respect to a light path of said multiple-image forming optical system.
Claim 14
Dependent Claim
141 words
A camera body having an apparatus for detecting a focus adjusting state of an objective lens, comprising: a finder; photo-sensing means for sensing an image formed by an objective lens; a multiple-image forming optical system for relaying the image formed by said objective lens and forming a plurality of images having parallax; light distribution means for distributing the image formed by said objective lens to said finder, said photo-sensing means and said multiple-image forming optical system; photo-electric conversion means having a number of photo-sensors for detecting the multiple images; tilt means for tilting said multiple-image forming optical system around an axis normal to a predetermined optical axis of said objective lens through said light distribution means; and inclination means for inclining an incident plane of said photo-electric conversion means with respect to a light path of said multiple-image forming optical system.
Claim 15
Dependent Claim
38 words
A camera body according to claim 12, wherein said tilt means tilts multiple-image forming optical system independently around orthogonal axes normal to a direction of the optical axis of said objective lens entering said multiple-image forming optical system.
References Cited (Backward Citations)
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1991-10-11 | 1992-04-11 | 1992-10-11 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1995-10-11 | 1996-04-11 | 1996-10-11 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1999-10-11 | 2000-04-11 | 2000-10-11 | $7700.00 | Window Closed / Lapsed |