US4840455A
Expired / Lapsed
US
⏱️ 0.0 years remaining
3-dimensional optical viewing system
Assignee: KEMPF CHARLES A AS TRUSTEE OF PAUL S KEMPF EXEMPT CREDIT TRUST
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Filing: 1985-03-20
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Granted: 1989-06-20
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Expires: 2005-03-20
Abstract
Abstract An optical viewing system for producing a 3-dimensional effect is arranged to project two different and separated views of an object simultaneously along different optical paths onto opposite halves of a retina of a viewer's eye, or onto both eyes of a viewer. The system includes a projecting lens, an image separator for projecting two separate images of the object, and a reflector for reflecting the images separately through at least one eye opening or exit pupil into a viewer's eye.
Inventors
- 👤 Paul S. Kempf
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-29 12:56
CPC Classifications
G; G02; G02B; G02B30/00; G02B30/20; G02B30/26
Claims Analysis
Total Claims: 12
Claim 1
Independent Claim
101 words
An optical system for providing a 3-dimensional view of an object, comprising: means for holding an object to be viewed; image forming and separating means for forming and projecting two different images of the same object from different angles along different optical paths through the system, the image forming and separating means comprising a projection lens and a pair of angled mirrors positioned to shutter opposite halves of the lens from each other to project separate images from opposite halves of the lens; and means for directing the images separately into the retina of at least one eye of an observer.
Claim 2
Dependent Claim
101 words
An optical system for providing a 3-dimensional view of an object, comprising: means for holding an object to be viewed; image forming and separating means for forming and projecting two different images of the same object from different angles along different optical paths through the system, the image forming and separating means comprising a projection lens and a pair of angled mirrors positioned to shutter opposite halves of the lens from each other to project separate images from opposite halves of the lens; and means for directing the images separately into the retina of at least one eye of an observer.
Claim 3
Dependent Claim
57 words
The system as claimed in claim 1, wherein the lens is positioned to project an image of the object and the mirrors comprise a 90 degree contiguous corner mirror positioned remote from the focal plane of the lens for splitting the image from the lens and reflecting two separate images along different optical paths through the system.
Claim 4
Dependent Claim
50 words
The system as claimed in claim 2, wherein said directing means comprises a reflector for receiving said separate images, said system including at least one eye opening for viewing the images and said reflector directing said images along separate paths into said eye opening for viewing by a single eye.
Claim 5
Dependent Claim
22 words
The system as claimed in claim 3, wherein said reflector comprises a concave mirror, located at a focal plane of said lens.
Claim 6
Dependent Claim
20 words
The system as claimed in claim 4, wherein said eye opening is located at a radius of said concave mirror.
Claim 7
Dependent Claim
43 words
The system as claimed in claim 4, wherein a beamsplitter is located in the optical path between said corner mirror and said concave mirror for transmitting said images to said concave mirror and reflecting images from said concave mirror into said eye opening.
Claim 8
Dependent Claim
97 words
The system as claimed in claim 2, wherein said lens is located above said holder and said corner mirror is located in the image path above said lens and at an inclined angle to it with the central dividing line of said mirror positioned to split the lens in half with one reflecting surface of the mirror directed at a first half of the lens and shuttering the second half of the lens, and the other reflecting surface of the mirror directed at the second half of the lens and shuttering the first half of the lens.
Claim 9
Dependent Claim
33 words
The system as claimed in claim 2, wherein said corner mirror is located between the object and the lens for reflecting two separate images of the object onto opposite halves of the lens.
Claim 10
Dependent Claim
50 words
The system as claimed in claim 1, including a right and left eye opening for viewing by the right and left eyes, respectively, of a viewer, said directing means comprising means for directing one of the images through one of the openings and the other image through the other opening.
Claim 11
Dependent Claim
64 words
The system as claimed in claim 9, wherein said directing means includes a beamsplitter positioned in the optical path after said projection lens, first reflecting means inclined to receive and reflect an image from the lefthand side of the lens only and second reflecting means inclined in the optical path to receive and reflect an image from the righthand side of the lens only.
Claim 12
Dependent Claim
36 words
The system as claimed in claim 10, wherein said directing means further includes means for directing said lefthand image into said left eye opening and means for directing said righthand image into said right eye opening.
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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) | 1992-06-19 | 1992-12-19 | 1993-06-20 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1996-06-19 | 1996-12-19 | 1997-06-20 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 2000-06-19 | 2000-12-19 | 2001-06-20 | $7700.00 | Window Closed / Lapsed |