Communications: electrical – Land vehicle alarms or indicators – Internal alarm or indicator responsive to a condition of the...
Patent
1985-03-14
1987-06-02
Curtis, Marshall M.
Communications: electrical
Land vehicle alarms or indicators
Internal alarm or indicator responsive to a condition of the...
340784, 340705, 340700, 350334, G09G 336
Patent
active
046707441
ABSTRACT:
A display system (10) receives from a light source (12) a sequence of images, each representing a different depth plane of a subject, and selectively reflects each image from its corresonding one of plural light direction modulators (16 and 18) to synthesize a three-dimensional image of the subject. Each modulator is positioned along an axis (20) at a location that corresponds to a different depth plane. Each modulator reflects the first image incident to it and transmits the succeeding images in the sequence. In a display system having N+1 depth plane images, each of N modulators comprises a variable optical retarder (34) and a liquid crystal chiral cell (36). The N modulators reflect left-circularly polarize light and transmit right-circularly polarized light. An N+1 modulator preferably comprises a liquid crystal chiral cell and reflects light incident to it. An alternative embodiment (50) develops full color images.
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patent: 4190856 (1980-02-01), Ricks
Scheffer, Twisted Nematic Display with Cholesteric Reflector, J. Phys. D: Appl. Phys., vol. 8, 1441-48 (1975).
Stover, Terminal Puts 3-D Graphics on Solid Ground, Electronics, Jul. 28, 1981, pp. 150-155.
Tamura et al., Multilayered 3-D Display . . . , Applied Optics, vol. 21, No. 20, pp. 3659-3663 (10/15/82).
Tamura et al., Multilayer 3-D Display Adapter, Applied Optics, vol. 17, No. 23, pp. 3695-3696.
Angello Paul S.
Curtis Marshall M.
Tektronix Inc.
Winkelman John D.
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