Optical element, optical device, mobile information...

Details Optical element, optical device, mobile information... Optical element, optical device, mobile information...

2006-08-02

2009-06-23

Thompson, Timothy J (Department: 2873)

Optical: systems and elements

Optical modulator

Light wave temporal modulation

C359S241000, C359S238000

Reexamination Certificate

active

07551340

ABSTRACT:
A microlouver has, as a basic unit, a light-controlling layer in which a light-absorbing layer and a transparent layer are laminated together, and a plurality of basic units L and S comprising a plurality of types of light-controlling layers having different layer thicknesses or optical constants, disposed in the direction of the layer thickness of the basic units. The array mode of the basic units L and S is determined based on a random number or a sequence-generating rule. For this reason, the microlouver has a large number of frequency components in terms of spatial frequency, and moire fringes that have a specific period and are normally caused by the interference with other optical elements are therefore prevented from occurring.

REFERENCES:
patent: 5784507 (1998-07-01), Holm-Kennedy et al.
patent: 7315667 (2008-01-01), Schmidt et al.
patent: 10-197844 (1998-07-01), None
patent: 2001-051125 (2001-02-01), None
patent: 2004-252329 (2004-09-01), None
patent: 2005-038746 (2005-01-01), None
Convertech, vol. 32, No. 6, pp. 6-7 (2004).

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