US3663085A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Stereoscopic viewing apparatus with single-axis optical system with conventional object lens
Assignee: Individual
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Filing: 1970-10-01
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Granted: 1972-05-16
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Expires: 1990-10-01
Abstract
Abstract For an illuminated object projected onto a screen through an optical system having a single object lens, light reflected from the object reaches the object lens through right and left polarizers and wherein the polarizing crystals in each are oriented at right angles to those in the other. The projected image is viewed through a second pair of right and left polarizers, shown as eyepieces in frames to be worn as glasses. Due to the combined effects of the polarizers, the image seen through the eyepieces appears three dimensional.
Inventors
- 👤 Allen V C Davis
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-01 18:17
CPC Classifications
G; G02; G02B; G02B30/00; G02B30/20; G02B30/22; G02B30/25
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
200 words
Stereoscopic viewing apparatus for a reaL three-dimensional object that is illuminated to cause light rays to be reflected therefrom, comprising: means defining a single-axis optical system including positioned an object lens at the end nearest the three-dimensional object in the path of the reflected rays, which system creates a magnified image of the object in a plane; and two pairs of left and right polarizers, one pair being located proximate the object lens and in the path of rays reflected from said object, the other pair being located so that said magnified image in said plane is viewed through said other pair, said one pair being orthogonal polarizers, rays from each point on the object passing through both polarizers of said one pair and said object lens, the remaining pair being orthogonal polarizers, and said pairs of polarizers combining to effect a convergence of each point of the object in said plane when viewed through said other pair, whereby each point of the image is effectively seen at different angles through the polarizers of said other pair, the portion of the polarizers of said one pair through which rays from said three-dimensional object pass being separated by an opaque screen.
Claim 2
Dependent Claim
200 words
Stereoscopic viewing apparatus for a reaL three-dimensional object that is illuminated to cause light rays to be reflected therefrom, comprising: means defining a single-axis optical system including positioned an object lens at the end nearest the three-dimensional object in the path of the reflected rays, which system creates a magnified image of the object in a plane; and two pairs of left and right polarizers, one pair being located proximate the object lens and in the path of rays reflected from said object, the other pair being located so that said magnified image in said plane is viewed through said other pair, said one pair being orthogonal polarizers, rays from each point on the object passing through both polarizers of said one pair and said object lens, the remaining pair being orthogonal polarizers, and said pairs of polarizers combining to effect a convergence of each point of the object in said plane when viewed through said other pair, whereby each point of the image is effectively seen at different angles through the polarizers of said other pair, the portion of the polarizers of said one pair through which rays from said three-dimensional object pass being separated by an opaque screen.
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) | 1975-05-16 | 1975-11-15 | 1976-05-16 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1979-05-16 | 1979-11-15 | 1980-05-16 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1983-05-16 | 1983-11-15 | 1984-05-16 | $7700.00 | Window Closed / Lapsed |