US4847647A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Camera furnished with a zoom lens system and a strobe unit capable of changing angle of illumination
Assignee: Pentax Corp
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Filing: 1988-08-26
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Granted: 1989-07-11
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Expires: 2008-08-26
Abstract
Abstract A camera having a zoom lens system and a built-in flash strobe unit for which the angle of illumination is automatically changed as zooming is effected, thereby to eliminate the "red-eye" effect. The strobe unit has a housing rotatably connected to the body of the camera through a support shaft. At least one of the strobe bulb, lens and reflector are movable through the rotation of a cam plate, the latter being rotatably driven by a cam mechanism and belt rotated by the drive mechanism which moves the zoom lens system.
Inventors
- 👤 Toshiaki Ueda
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-25 12:10
CPC Classifications
G; G03; G03B; G03B15/00; G03B15/02; G03B15/03; G03B15/05; G03B2215/00; G03B2215/05; G03B2215/0503; G03B2215/0507; G03B2215/051
Claims Analysis
Total Claims: 5
Claim 1
Independent Claim
162 words
In a camera furnished with a zoom lens system including movable lens groups capable of changing a focal length and a strobe unit capable of changing an angle of illumination in response to a change in a focal length of the zoom lens system, the improvement comprising: a strobe housing, and a condenser lens, light-emitting bulb and reflector mounted in said housing, said housing being rotatably supported to move between a position at which it is accommodated in a body of the camera and a position at which it protrudes therefrom; means in said strobe housing for changing said illumination angle by moving one of said condenser lens, light-emitting bulb and reflector in a selected forward or backward direction along an optical axis of said camera; a belt transmission mechanism; and a drive mechanism in said body of the camera for moving said zooming lens groups and which is operatively associated with said illumination angle changing mechanism by said belt transmission mechanism.
Claim 2
Dependent Claim
162 words
In a camera furnished with a zoom lens system including movable lens groups capable of changing a focal length and a strobe unit capable of changing an angle of illumination in response to a change in a focal length of the zoom lens system, the improvement comprising: a strobe housing, and a condenser lens, light-emitting bulb and reflector mounted in said housing, said housing being rotatably supported to move between a position at which it is accommodated in a body of the camera and a position at which it protrudes therefrom; means in said strobe housing for changing said illumination angle by moving one of said condenser lens, light-emitting bulb and reflector in a selected forward or backward direction along an optical axis of said camera; a belt transmission mechanism; and a drive mechanism in said body of the camera for moving said zooming lens groups and which is operatively associated with said illumination angle changing mechanism by said belt transmission mechanism.
Claim 3
Dependent Claim
53 words
The camera according to claim 1, further comprising a retainer for said light-emitting bulb, said retainer being capable of moving toward or away from said condenser lens, and wherein said condenser lens is secured to a front face of said strobe housing and said light-emitting bulb and reflector are secured to said retainer.
Claim 4
Dependent Claim
23 words
The camera according to claim 2, further comprising a support shaft for rotatably connecting said strobe housing to said body of said camera.
Claim 5
Dependent Claim
127 words
The camera according to claim 3, wherein said illumination angle changing mechanism comprises a cam plate rotatably supported on a shaft fixed to said strobe housing and a cam mechanism comprising a follower pin fixed to said light-emitting bulb retainer and movable forward or backward in response to rotation of said cam plate, a gear mechanism for rotatably driving said cam plate, a drive mechanism for moving said movable zooming lens groups, said drive mechanism having a drive shaft and said gear mechanism having a follower shaft, said drive shaft being positioned parallel to said support shaft, and a belt wrapped around said follower shaft and said drive shaft, tension and slack sides of said belt being in contact with said support shaft on said strobe housing.
References Cited (Backward Citations)
US3798668A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1992-07-10 | 1993-01-09 | 1993-07-11 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1996-07-10 | 1997-01-09 | 1997-07-11 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 2000-07-10 | 2001-01-09 | 2001-07-11 | $7700.00 | Window Closed / Lapsed |