Patent US4422720A successfully refreshed from Google Patents.
US4422720A
Expired / Lapsed
US
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Stereoscopic viewing and projection system
Assignee: Bright and Morning Star Co
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Filing: 1980-10-09
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Granted: 1983-12-27
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Expires: 2000-10-09
Abstract
Abstract There is disclosed an image orientation and projection system for use with stereoscopic viewing and projection systems. The preferred embodiment utilizes a stereoscopic viewing system of one or two prisms, preferably each having a plano face and an opposite face bearing a plurality of spaced-apart, straight and parallel V-grooves. Reflective surfaces are positioned in relation to said prisms to permit the employment of left and right stereoscopic images in their normal (left - right) and unreversed orientation to each other.
Inventors
- 👤 David M. Sheiman
- 👤 Elliot A. Rudell
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-02 12:06
CPC Classifications
G; G02; G02B; G02B27/00; G02B27/02; G02B30/00; G02B30/20; G02B30/26
Claims Analysis
Total Claims: 39
Claim 1
Independent Claim
119 words
A stereoscopic viewing system comprising: (a) a thin plate prism with a plano face and an opposite face bearing a plurality of parallel, spaced-apart, straight-line, V-grooves defining a plurality of straight, spaced-apart, triangular prisms that provide a viewing face; (b) a mirror to one side of and parallel to said thin plate prism; (c) a first imaging surface behind said thin plate prism, at an occluded angle of 1 degree to 15 degrees relative to said prism; (d) a second imaging surface in the reflected line of sight from said mirror, at an occluded angle of 40 to 60 degrees with said mirror; and (e) first and second stereoscopic images displayed, respectively, on said first and second imaging surfaces.
Claim 2
Dependent Claim
119 words
A stereoscopic viewing system comprising: (a) a thin plate prism with a plano face and an opposite face bearing a plurality of parallel, spaced-apart, straight-line, V-grooves defining a plurality of straight, spaced-apart, triangular prisms that provide a viewing face; (b) a mirror to one side of and parallel to said thin plate prism; (c) a first imaging surface behind said thin plate prism, at an occluded angle of 1 degree to 15 degrees relative to said prism; (d) a second imaging surface in the reflected line of sight from said mirror, at an occluded angle of 40 to 60 degrees with said mirror; and (e) first and second stereoscopic images displayed, respectively, on said first and second imaging surfaces.
Claim 3
Dependent Claim
19 words
The stereoscopic viewing system of claim 1 including a magnification lens located between said prism and second imaging surface.
Claim 4
Dependent Claim
25 words
The stereoscopic viewing system of claim 1 including a magnification lens in front of said prism, in the line of sight of a viewer thereof.
Claim 5
Dependent Claim
22 words
The stereoscopic viewing system of claim 1 wherein said V-grooves are provided at a density from about 10 to 200 per inch.
Claim 6
Dependent Claim
21 words
The stereoscopic viewing system of claim 1 wherein said V-grooves are provided at a density of at least 50 per inch.
Claim 7
Dependent Claim
90 words
A stereoscopic viewing system for viewing a remote display of side-by-side disposed stereoscopic images which comprises: (a) a thin plate prism with a plano face and an opposite face bearing a plurality of parallel, spaced-apart triangular prisms; (b) a first mirror in the light path of one image of said images to reflect said one image directly onto one prism face; and (c) second and third mirrors in the light path of the other image of said images to successively reflect said other image directly onto the other prism face.
Claim 8
Dependent Claim
90 words
A stereoscopic viewing system for viewing a remote display of side-by-side disposed stereoscopic images which comprises: (a) a thin plate prism with a plano face and an opposite face bearing a plurality of parallel, spaced-apart triangular prisms; (b) a first mirror in the light path of one image of said images to reflect said one image directly onto one prism face; and (c) second and third mirrors in the light path of the other image of said images to successively reflect said other image directly onto the other prism face.
Claim 9
Dependent Claim
66 words
The stereoscopic viewing system of claim 6 for viewing projected stereoscopic images which also comprises: (a) a first imaging surface positioned between said first mirror and said one prism face to intercept and display one image of said projected stereoscopic images; and (b) a second imaging surface positioned between said third mirror and said other prism face to intercept and display the other of said images.
Claim 10
Dependent Claim
45 words
The stereoscopic viewing system of claim 7 wherein said first imaging surface is positioned at an occluded angle of 1 to 15 degrees to said prism; and said second imaging surface is positioned at an occluded angle of 40 to 60 degrees to said prism.
Claim 11
Dependent Claim
120 words
A stereoscopic viewing system comprising: (a) a solid triangular prism having a hypotenuse face and two short faces with an apex angle between one of said short faces and hypotenuse face from 35 to 45 degrees; (b) a mirror to one side of and parallel to said hypotenuse face of said prism; (c) a first imaging surface behind said prism, at an occluded angle of 1 degree to 15 degrees relative to said hypotenuse face of said prism; (d) a second imaging surface in the reflected line of sight from said mirror, at an occluded angle of 40 to 60 degrees with said mirror; and (e) first and second stereoscopic images displayed, respectively, on said first and second imaging surfaces.
Claim 12
Dependent Claim
120 words
A stereoscopic viewing system comprising: (a) a solid triangular prism having a hypotenuse face and two short faces with an apex angle between one of said short faces and hypotenuse face from 35 to 45 degrees; (b) a mirror to one side of and parallel to said hypotenuse face of said prism; (c) a first imaging surface behind said prism, at an occluded angle of 1 degree to 15 degrees relative to said hypotenuse face of said prism; (d) a second imaging surface in the reflected line of sight from said mirror, at an occluded angle of 40 to 60 degrees with said mirror; and (e) first and second stereoscopic images displayed, respectively, on said first and second imaging surfaces.
Claim 13
Dependent Claim
21 words
The stereoscopic viewing system of claim 9 wherein at least one of said short faces of said solid prism is convex.
Claim 14
Dependent Claim
21 words
The stereoscopic viewing system of claim 9 wherein at least one of said short faces of said solid prism is concave.
Claim 15
Dependent Claim
100 words
A stereoscopic viewing system for viewing a remote display of side-by-side disposed stereoscopic images which comprises: (a) a solid triangular prism having a hypotenuse face and a viewing face with an apex angle between said viewing face and hypotenuse face from 35 to 45 degrees; (b) a first mirror in the light path of one image of said images to reflect said one image directly onto one non-viewing prism face; and (c) second and third mirrors in the light path of the other image of said images to successively reflect said other image directly onto the other non-viewing prism face.
Claim 16
Dependent Claim
100 words
A stereoscopic viewing system for viewing a remote display of side-by-side disposed stereoscopic images which comprises: (a) a solid triangular prism having a hypotenuse face and a viewing face with an apex angle between said viewing face and hypotenuse face from 35 to 45 degrees; (b) a first mirror in the light path of one image of said images to reflect said one image directly onto one non-viewing prism face; and (c) second and third mirrors in the light path of the other image of said images to successively reflect said other image directly onto the other non-viewing prism face.
Claim 17
Dependent Claim
68 words
The stereoscopic viewing system of claim 12 for viewing projected stereoscopic images which also comprises: (a) a first imaging surface positioned between said first mirror and said one non-viewing prism face to intercept and display one image of said projected stereoscopic images; and (b) a second imaging surface positioned between said third mirror and said other non-viewing prism face to intercept and display the other of said images.
Claim 18
Dependent Claim
102 words
A stereoscopic viewing system comprising: (a) a pair of thin plate prisms, each with a plano face and an opposite face bearing a plurality of parallel, spaced-apart, straight-line, V-grooves defining a plurality of straight, spaced-apart, triangular prisms and assembled with back-to-back plano faces;, (b) a mirror to one side of said assembly; (c) a first imaging surface behind said assembly, at an occluded angle of 40 to 60 degrees to said assembly; (d) a second imaging surface in the reflected line of sight from said mirror; and (e) first and second stereoscopic images displayed, respectively, on said first and second imaging surfaces.
Claim 19
Dependent Claim
102 words
A stereoscopic viewing system comprising: (a) a pair of thin plate prisms, each with a plano face and an opposite face bearing a plurality of parallel, spaced-apart, straight-line, V-grooves defining a plurality of straight, spaced-apart, triangular prisms and assembled with back-to-back plano faces;, (b) a mirror to one side of said assembly; (c) a first imaging surface behind said assembly, at an occluded angle of 40 to 60 degrees to said assembly; (d) a second imaging surface in the reflected line of sight from said mirror; and (e) first and second stereoscopic images displayed, respectively, on said first and second imaging surfaces.
Claim 20
Dependent Claim
26 words
The stereoscopic viewing system of claim 14 wherein said mirror is parallel to said assembly and said second imaging surface is beside said first imaging surface.
Claim 21
Dependent Claim
41 words
The stereoscopic viewing system of claim 14 wherein said mirror has an occluded angle to said prism assembly of 30 to 45 degrees, and said second imaging surface is located to the opposite side of said assembly relative to said mirror.
Claim 22
Dependent Claim
20 words
The stereoscopic viewing system of claim 14 including a magnification lens located between said prism assembly and second imaging surface.
Claim 23
Dependent Claim
20 words
The stereoscopic viewing system of claim 14 including a reduction lens located between said prism assembly and first imaging surface.
Claim 24
Dependent Claim
111 words
A stereoscopic viewing system for viewing a remote display of side-by-side disposed stereoscopic images which comprises: (a) a pair of thin plate prisms, each with a plano face and an opposite face bearing a plurality of parallel, spaced-apart, straight-line, V-grooves defining a plurality of straight, spaced-apart, triangular prisms and assembled with back-to-back plano faces; (b) a first mirror in the light path of one image of said images to reflect said one image directly onto one of said prism faces; and (c) second and third mirrors in the light path of the other image of said images to successively reflect said other image directly onto the other of said prism faces.
Claim 25
Dependent Claim
111 words
A stereoscopic viewing system for viewing a remote display of side-by-side disposed stereoscopic images which comprises: (a) a pair of thin plate prisms, each with a plano face and an opposite face bearing a plurality of parallel, spaced-apart, straight-line, V-grooves defining a plurality of straight, spaced-apart, triangular prisms and assembled with back-to-back plano faces; (b) a first mirror in the light path of one image of said images to reflect said one image directly onto one of said prism faces; and (c) second and third mirrors in the light path of the other image of said images to successively reflect said other image directly onto the other of said prism faces.
Claim 26
Dependent Claim
66 words
The stereoscopic viewing system of claim 19 for viewing projected stereoscopic images which also comprises: (a) a first imaging surface positioned between said first mirror and said first prism face to intercept and display one image of said projected stereoscopic images; and (b) a second imaging surface positioned between said third mirror and said second prism face to intercept and display the other of said images.
Claim 27
Dependent Claim
22 words
The stereoscopic viewing system of claim 20 wherein said V-grooves are provided at a density from about 10 to 200 per inch.
Claim 28
Dependent Claim
21 words
The stereoscopic viewing system of claim 20 wherein said V-grooves are provided at a density of at least 50 per inch.
Claim 29
Dependent Claim
27 words
The stereoscopic viewing system of claim 19 wherein said thin plate prisms are positioned with an occluded angle of 1 to 15 degrees between their plano faces.
Claim 30
Dependent Claim
131 words
A stereoscopic viewing system comprising: (a) a solid triangular prism having a hypotenuse face and two short faces with an apex angle between at least short face and the hypotenuse face from 35 to 45 degrees; (b) a thin plate prism with a plano face and an opposite face bearing a plurality of parallel, spaced-apart triangular prisms with its plano surface opposite to said hypotenuse face of said solid triangular prism; (c) a mirror to one side of said assembly; (d) a first imaging surface behind said assembly, at an occluded angle of 40 to 60 degrees to said hypotenuse face; (e) a second imaging surface in the reflected line of sight from said mirror; and (f) first and second stereoscopic images displayed, respectively, on said first and second imaging surfaces.
Claim 31
Dependent Claim
131 words
A stereoscopic viewing system comprising: (a) a solid triangular prism having a hypotenuse face and two short faces with an apex angle between at least short face and the hypotenuse face from 35 to 45 degrees; (b) a thin plate prism with a plano face and an opposite face bearing a plurality of parallel, spaced-apart triangular prisms with its plano surface opposite to said hypotenuse face of said solid triangular prism; (c) a mirror to one side of said assembly; (d) a first imaging surface behind said assembly, at an occluded angle of 40 to 60 degrees to said hypotenuse face; (e) a second imaging surface in the reflected line of sight from said mirror; and (f) first and second stereoscopic images displayed, respectively, on said first and second imaging surfaces.
Claim 32
Dependent Claim
27 words
The stereoscopic viewing system of claim 24 wherein sad mirror is parallel to said hypotenuse face and said second imaging surface is beside said first imaging surface.
Claim 33
Dependent Claim
41 words
The stereoscopic viewing system of claim 24 wherein said mirror has an occluded angle to said hypotenuse face of 30 to 45 degrees, and said second imaging surface is located to the opposite side of said assembly relative to said mirror.
Claim 34
Dependent Claim
21 words
The stereoscopic viewing system of claim 24 wherein at least one of said short faces of said solid prism is convex.
Claim 35
Dependent Claim
21 words
The stereoscopic viewing system of claim 24 wherein at least one of said short faces of said solid prism is concave.
Claim 36
Dependent Claim
32 words
The stereoscopic viewing system of claim 24 wherein said thin plate prism and said solid triangular prism are positioned with an occluded angle of 1 to 15 degrees between their adjacent faces.
Claim 37
Dependent Claim
139 words
A stereoscopic viewing system for viewing a remote display of side-by-side disposed stereoscopic images which comprises: (a) a solid triangular prism having a hypotenuse face and two short faces with an apex angle between at least one short face and the hypotenuse face from 35 to 45 degrees; (b) a thin plate prism with a plano face and an opposite face bearing a plurality of parallel, spaced-apart triangular prisms with its plano surface opposite to said hypotenuse face of said solid triangular prism; (c) a first mirror in the light path of one image of said images to reflect said one image directly onto one non-viewing prism face; and (d) second and third mirrors in the light path of the other image of said images to successively reflect said other image directly onto the other of said prism faces.
Claim 38
Dependent Claim
139 words
A stereoscopic viewing system for viewing a remote display of side-by-side disposed stereoscopic images which comprises: (a) a solid triangular prism having a hypotenuse face and two short faces with an apex angle between at least one short face and the hypotenuse face from 35 to 45 degrees; (b) a thin plate prism with a plano face and an opposite face bearing a plurality of parallel, spaced-apart triangular prisms with its plano surface opposite to said hypotenuse face of said solid triangular prism; (c) a first mirror in the light path of one image of said images to reflect said one image directly onto one non-viewing prism face; and (d) second and third mirrors in the light path of the other image of said images to successively reflect said other image directly onto the other of said prism faces.
Claim 39
Dependent Claim
66 words
The stereoscopic viewing system of claim 30 for viewing projected stereoscopic images which also comprises: (a) a first imaging surface positioned between said first mirror and said first prism face to intercept and display one image of said projected stereoscopic images; and (b) a second imaging surface positioned between said third mirror and said second prism face to intercept and display the other of said images.
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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) | 1986-12-26 | 1987-06-27 | 1987-12-27 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1990-12-26 | 1991-06-27 | 1991-12-27 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1994-12-26 | 1995-06-27 | 1995-12-27 | $7700.00 | Window Closed / Lapsed |