US4488795A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Camera for three-dimensional portraiture
Assignee: Individual
•
Filing: 1982-09-13
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Granted: 1984-12-18
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Expires: 2002-09-13
Abstract
Abstract A camera for taking portraits including a main lens designed for normal operation at infinity. The lens has a conventional shutter and an aperture member provided with a slit aperture having a width of about 3.5" and a height of about 0.75". A portrait lens is in front of the main lens to enable the lens to receive parallel light rays representing the image of a subject in a datum plane. A lenticular screen is behind the main lens and defines a film plane at which a photographic film can be placed. A field lens is immediately ahead of the lenticular screen to normalize the converging light rays from the main lens. The lenticular screen has a pitch in the range of 50 to 300 lenticules per linear inch. The lenticules can be vertical or inclined.
Inventors
- 👤 Douglas F. Winnek
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-30 09:04
CPC Classifications
G; G03; G03B; G03B35/00; G03B35/08
Claims Analysis
Total Claims: 12
Claim 1
Independent Claim
155 words
A camera for three-dimensional portraiture comprising: a multi-element main lens having a shutter between a pair of elements of the main lens, said main lens being adapted for normal operation at infinity; an aperture member between the shutter and the next adjacent element of said main lens, said aperture member provided with a fixed aperture therein to allow light rays to pass through the main lens when the shutter is opened; a first lens in advance of the main lens, the first lens having a predetermined focal length; a lenticular screen on the opposite side of the main lens, the lenticular screen having a plurality of lenticules on the front face thereof, there being a film plane adjacent to the rear surface of the lenticular screen at which a photographic film can be placed; and a field lens between the main lens and the lenticular screen to normalize the light rays from the main lens.
Claim 2
Dependent Claim
155 words
A camera for three-dimensional portraiture comprising: a multi-element main lens having a shutter between a pair of elements of the main lens, said main lens being adapted for normal operation at infinity; an aperture member between the shutter and the next adjacent element of said main lens, said aperture member provided with a fixed aperture therein to allow light rays to pass through the main lens when the shutter is opened; a first lens in advance of the main lens, the first lens having a predetermined focal length; a lenticular screen on the opposite side of the main lens, the lenticular screen having a plurality of lenticules on the front face thereof, there being a film plane adjacent to the rear surface of the lenticular screen at which a photographic film can be placed; and a field lens between the main lens and the lenticular screen to normalize the light rays from the main lens.
Claim 3
Dependent Claim
24 words
A camera as set forth in claim 1, wherein the focal length of the first lens is in the range of 30 to 50".
Claim 4
Dependent Claim
19 words
A camera as set forth in claim 1, wherein the focal length of the main lens is approximately 12".
Claim 5
Dependent Claim
18 words
A camera as set forth in claim 1, wherein the aperture of said aperture member is generally rectangular.
Claim 6
Dependent Claim
23 words
A camera as set forth in claim 3, wherein the aperture has a width of approximately 3.5" and a height of approximate 0.75".
Claim 7
Dependent Claim
25 words
A camera as set forth in claim 1, wherein the lenticular screen has a pitch in the range of 50 to 300 lenticules per inch.
Claim 8
Dependent Claim
17 words
A camera as set forth in claim 1, wherein the first lens is a plano-convex spherical lens.
Claim 9
Dependent Claim
17 words
A camera as set forth in claim 1, wherein the field lens is a plano-convex cylindrical lens.
Claim 10
Dependent Claim
18 words
A camera as set forth in claim 1, wherein the lenticules of the lenticular screen are generally vertical.
Claim 11
Dependent Claim
29 words
A camera as set forth in claim 1, wherein the lenticules of the lenticular screen are parallel with each other and are generally inclined with respect to the vertical.
Claim 12
Dependent Claim
71 words
A camera as set forth in claim 1, wherein the first lens has a focal length in the range of 30" to 50", said aperture having a width of about 3.5" and a height of about 0.75", said lenticular screen having a pitch in the range of 50 to 300 lenticules per linear inch, the first lens being a plano-convex spherical lens and the field lens being a plano-convex cylindrical lens.
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) | 1987-12-18 | 1988-06-18 | 1988-12-18 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1991-12-18 | 1992-06-18 | 1992-12-18 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1995-12-18 | 1996-06-18 | 1996-12-18 | $7700.00 | Window Closed / Lapsed |