US4441141A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Light reflector unit for a photographic camera
Assignee: Individual
•
Filing: 1981-09-17
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Granted: 1984-04-03
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Expires: 2001-09-17
Abstract
Abstract A light reflector unit (12) for use with a photographic camera (10) for reflecting light from a light source (13), such as a flash gun, towards the subject to be photographed, the unit (12) comprising a hollow casing (15) having a window (16) for admitting light from the light source (13) into the casing (15), means (28) within the casing 15 for splitting the admitted light and for condensing the split light into separate beams of light, reflective surfaces (26) within the casing (15) for deflecting each beam of light to one of a plurality of windows (18) located such that when the reflector unit (12) is positioned on a camera (10) they face in the same direction as the lens of the lens unit (11) of the camera (10) and are disposed at discrete locations around the lens unit (11).
Inventors
- 👤 Anthony T. S. Lo
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-06 06:38
CPC Classifications
G; G03; G03B; G03B15/00; G03B15/02; G03B15/03
Claims Analysis
Total Claims: 13
Claim 1
Independent Claim
144 words
A light reflector unit for use with a photographic camera for reflecting light from a light source towards a subject to be photographed, said unit comprising a hollow casing which can be positioned on a camera between a light source and the lens unit of the camera, a window in the casing for admitting light from said light source into the casing, at least one light emitting outlet from the casing, means for positioning the casing with said outlets facing the same direction as the lens unit of said camera, means within the casing for splitting the admitted light, means for condensing at least some of the admitted light into at least two beams of light, and light reflective surfaces within the casing for reflecting each beam of light to said light emitting outlet, said outlet being provided with a lens or a diffuser.
Claim 2
Dependent Claim
144 words
A light reflector unit for use with a photographic camera for reflecting light from a light source towards a subject to be photographed, said unit comprising a hollow casing which can be positioned on a camera between a light source and the lens unit of the camera, a window in the casing for admitting light from said light source into the casing, at least one light emitting outlet from the casing, means for positioning the casing with said outlets facing the same direction as the lens unit of said camera, means within the casing for splitting the admitted light, means for condensing at least some of the admitted light into at least two beams of light, and light reflective surfaces within the casing for reflecting each beam of light to said light emitting outlet, said outlet being provided with a lens or a diffuser.
Claim 3
Dependent Claim
30 words
A light reflector as set forth in claim 1 wherein said outlet is arcuate and is adapted to be positioned at least partially surrounding the lens unit of the camera.
Claim 4
Dependent Claim
48 words
A light reflector as set forth in claim 1 including a plurality of said outlets adapted to be disposed at discrete locations around the lens unit of a camera, said light reflective surfaces reflecting at least a portion of each beam of light to one of said outlets.
Claim 5
Dependent Claim
41 words
A light reflector unit as set forth in claims 1, 2, or 3 in which the casing is provided with an opening which directs some light from said light source directly across the casing onto a reflector located beneath said casing.
Claim 6
Dependent Claim
20 words
A light reflector unit as set forth in claims 1, 2, or 3 further including a diffuser for each outlet.
Claim 7
Dependent Claim
63 words
A light reflector unit as set forth in claims 2 or 3 wherein the casing includes a hollow casing member open at its forward face, and a unit which is received in the casing member mounting said means for splitting the admitted light, said means for condensing the light into two or more beams, said light reflective surfaces and said light emitting outlets.
Claim 8
Dependent Claim
23 words
A light reflector unit as set forth in claim 6 including a lens carried on a cover plate for each light emitting outlet.
Claim 9
Dependent Claim
36 words
A light reflector unit as set forth in claims 1, 2, or 3 wherein said means for splitting the admitted light comprises two upwardly extending light reflective surfaces inclined towards each other at their upper ends.
Claim 10
Dependent Claim
30 words
A light reflector unit as set forth in claims 1, 2, or 3 wherein said means for positioning said casing includes means for attacing said unit to a light source.
Claim 11
Dependent Claim
46 words
A light reflecting unit as set forth in claim 9 wherein said means for attaching comprises a plate which can be secured to said light source, said plate including pivotable clamp members each of which engages a recess provided on the upper wall of said casing.
Claim 12
Dependent Claim
40 words
A light reflector unit as set forth in claim 9 wherein said means for attaching includes a mounting flange provided on the casing and which can be fixed to a filter holder provided on the lens unit of the camera.
Claim 13
Dependent Claim
28 words
A light reflector unit as set forth in claims 1, 2, or 3, further including a frusto-conical deflector adapted to extend around the lens unit of a camera.
References Cited (Backward Citations)
US3737226A
Cited
US4333127A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1987-04-03 | 1987-10-03 | 1988-04-03 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1991-04-03 | 1991-10-03 | 1992-04-03 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1995-04-03 | 1995-10-03 | 1996-04-03 | $7700.00 | Window Closed / Lapsed |