Low differential 3-D viewer glasses and method with spectral tra

Details Low differential 3-D viewer glasses and method with spectral tra Low differential 3-D viewer glasses and method with spectral tra

1988-02-09

1989-06-06

Henry, Jon W.

Optics: motion pictures

Removable film strip magazine type

350144, 352 86, 358 89, G02B 2722, G03B 2132

Patent

active

048366471

ABSTRACT:
A method for creating a 3-D television effect is disclosed in which a scene is recorded with a relative lateral movement between the scene and the recording mechanism. The recording is played back and viewed through a pair of viewer glasses in which one of the lenses is darker and has a spectral transmission characterized by a reduced transmissivity at at least one, and preferably all three, of the television's peak radiant energy wavebands. The lighter lens, on the other hand, has a spectral transmission characterized by a reduced transmissivity at wavelengths removed from the television energy peaks. The result is a substantially greater effective optical density differential between the two lenses when viewing television than in normal ambient light. This produces a very noticeable 3-D effect for television scenes with the proper movement, while avoiding the prior "dead eye" effect associated with too great a density differential in ordinary light. Further enhancement is achieved by providing the darker lens with a higher transmissivity in the blue and red regions than in the yellow or green regions.

REFERENCES:
patent: 3445153 (1969-05-01), Marks et al.
patent: 4131342 (1978-12-01), Dudley
patent: 4705371 (1987-11-01), Beard
W. F. Finch, "Synthesis of Three-Dimensional . . . ", IBM Tech. Dis. Bull., vol. 23, No. 6, pp. 2391-2392, Nov. 1980 (358189).

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