US4085316A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Photographic flash device
Assignee: Rollei of America Inc
•
Filing: 1975-12-17
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Granted: 1978-04-18
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Expires: 1995-12-17
Abstract
Abstract An attachment for photographic flash equipment comprises a dome shaped member which is primarily constructed of light diffusing material but having a portion thereof which is considerably less light diffusing and which operates to direct some of the light emitted by the flash equipment away from a subject to be photographed so that it may be reflected from a nearby surface and thus indirectly illuminate the subject.
Inventors
- 👤 Peter T. Quinn
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-30 12:31
CPC Classifications
G; G03; G03B; G03B15/00; G03B15/02; G03B15/03; G03B2215/00; G03B2215/05; G03B2215/0514; G03B2215/0517; G03B2215/0525; G03B2215/0535
Claims Analysis
Total Claims: 11
Claim 1
Independent Claim
203 words
Apparatus for use with photographic flash equipment including a source of light associated with a camera, for providing a bounce flash from a nearby surface to photograph a subject comprising: a light diffusing dome shaped member including means for removably attaching the member to the photographic flash equipment between the source of light and a subject to be photographed for providing a first part of the light emitted from the source of light to pass through said member in a first general direction to directly illuminate the subject to be photographed, said member having a sole portion which is substantially less light diffusing for directing a second part of the light emitted from the source of light directly through said member in a single second general direction away from the subject to be photographed for reflecting said second part of light from a nearby surface to indirectly illuminate the subject to be photographed, said portion located for a positioning of the camera for causing said second part of the light to bounce solely from a surface above the subject during photographing whereby the subject appears to be illuminated from above and shadows are formed to give a more natural appearance of the subject.
Claim 2
Dependent Claim
203 words
Apparatus for use with photographic flash equipment including a source of light associated with a camera, for providing a bounce flash from a nearby surface to photograph a subject comprising: a light diffusing dome shaped member including means for removably attaching the member to the photographic flash equipment between the source of light and a subject to be photographed for providing a first part of the light emitted from the source of light to pass through said member in a first general direction to directly illuminate the subject to be photographed, said member having a sole portion which is substantially less light diffusing for directing a second part of the light emitted from the source of light directly through said member in a single second general direction away from the subject to be photographed for reflecting said second part of light from a nearby surface to indirectly illuminate the subject to be photographed, said portion located for a positioning of the camera for causing said second part of the light to bounce solely from a surface above the subject during photographing whereby the subject appears to be illuminated from above and shadows are formed to give a more natural appearance of the subject.
Claim 3
Dependent Claim
22 words
Apparatus according to claim 1 wherein the portion comprises an aperture in the member with a light transmissive insert in the aperture.
Claim 4
Dependent Claim
11 words
Apparatus according to claim 2 wherein the insert comprises a lens.
Claim 5
Dependent Claim
12 words
Apparatus according to claim 3 wherein the lens comprises a Fresnel lens.
Claim 6
Dependent Claim
23 words
Apparatus according to claim 1 wherein the member is comprised of plastic having a first neutral density and the portion being substantially clear.
Claim 7
Dependent Claim
29 words
Apparatus according to claim 1 wherein the portion is positioned so that the second part of the light does not directly enter the field of view of the camera.
Claim 8
Dependent Claim
204 words
Apparatus for use with photographic flash equipment including a source of light associated with a camera for providing a bounce flash from a nearby surface to photograph a subject, comprising: a light diffusing dome shaped member including means for removably attaching the member to the photographic flash equipment between the source of light and a subject to be photographed for providing a first part of the light emitted from the source of light to pass through said member in a first general direction to directly illuminate the subject, said member having a portion which is substantially less light diffusing for directing a second part of the light emitted from the source of light directly through said member in a single second general direction at an angle less than 90° from the first direction for reflecting said second part of light from a nearby surface to indirectly illuminate the subject to be photographed, said portion comprising: an aperture in said member; and a light transmissive insert in said aperture, said insert comprising a lens; and said portion positioned and the focal length of said lens chosen so that said second part of the light does not directly enter the field of view of the camera.
Claim 9
Dependent Claim
204 words
Apparatus for use with photographic flash equipment including a source of light associated with a camera for providing a bounce flash from a nearby surface to photograph a subject, comprising: a light diffusing dome shaped member including means for removably attaching the member to the photographic flash equipment between the source of light and a subject to be photographed for providing a first part of the light emitted from the source of light to pass through said member in a first general direction to directly illuminate the subject, said member having a portion which is substantially less light diffusing for directing a second part of the light emitted from the source of light directly through said member in a single second general direction at an angle less than 90° from the first direction for reflecting said second part of light from a nearby surface to indirectly illuminate the subject to be photographed, said portion comprising: an aperture in said member; and a light transmissive insert in said aperture, said insert comprising a lens; and said portion positioned and the focal length of said lens chosen so that said second part of the light does not directly enter the field of view of the camera.
Claim 10
Dependent Claim
12 words
Apparatus according to claim 7, wherein said lens comprises a fresnel lens.
Claim 11
Dependent Claim
10 words
Apparatus according to claim 8 wherein said lens is plastic.
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USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1981-04-17 | 1981-10-17 | 1982-04-18 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1985-04-17 | 1985-10-17 | 1986-04-18 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1989-04-17 | 1989-10-17 | 1990-04-18 | $7700.00 | Window Closed / Lapsed |