Depth sampling three-dimensional image display apparatus

Details Depth sampling three-dimensional image display apparatus Depth sampling three-dimensional image display apparatus

1996-01-18

1997-11-18

Sikes, William L.

Liquid crystal cells, elements and systems

Particular structure

Interconnection of plural cells in series

349 86, 349 15, G02F 11347, G02F 11333

Patent

active

056893167

ABSTRACT:
A depth sampling three-dimensional image display apparatus is capable of displaying a three-dimensional image without use of glasses. The apparatus includes a collimated light projecting device for projecting collimated light and an object of observation which passes substantially all components of the collimated light without inducing refraction or diffraction, and which has written therein information without inducing refraction or diffraction of the collimated light representative of a three-dimensional image. The apparatus further includes a large-diameter convex condenser for concentrating the light passed through the object of observation, a spatial filter which obstructs passage of light only in an area including the optical axis and the vicinity thereof to eliminate the straight-flow component of the light introduced via the large-diameter convex condenser, and a large-diameter convex imaging lens for focusing the light passed through the spatial filter to form a three-dimensional image.

REFERENCES:
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patent: 5113272 (1992-05-01), Reamey
patent: 5144482 (1992-09-01), Gould
patent: 5257130 (1993-10-01), Monroe
T. Hattori, "Spatial Modulation Display Using Spatial Light Modulators," Optical Engineering, vol. 31, No. 2, Feb. 1992, Bellingham, pp. 350-352.
French Preliminary Search Report dated Nov. 27, 1995.

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