Lens plate, method for manufacturing the same and image...

Details Lens plate, method for manufacturing the same and image... Lens plate, method for manufacturing the same and image...

2007-07-10

2007-07-10

Spector, David N. (Department: 2873)

Optical: systems and elements

Single channel simultaneously to or from plural channels

By surface composed of lenticular elements

C359S620000

Reexamination Certificate

active

11494314

ABSTRACT:
Spherical convex micro-lenses are arranged between rectangular grooves adjacent to each other of a lens plate. The arrangement of convex micro-lenses is made to be in parallel with the short-side direction of the lens plate, namely, the direction of the rectangular grooves. Since stray light appears mainly on the convex micro-lenses arranged in the long-side direction of the lens plate, the stray light to appear in the long-side direction of the lens plate is removed by forming grooves at regular intervals in the long-side direction of the lens plate and forming a light absorbing film in each of the rectangular grooves. Or the stray light to appear in the long-side direction of the lens plate is removed by making the direction of arrangement of convex micro-lenses different from the long-side direction of the lens plate.

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Watson et al. “Analysis of Fill Factor Improvement Using Microlens Arrays”, Mar. 1998, SPIE, vol. 3276, pp. 123-134.

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