Lenticular lens sheet

Details Lenticular lens sheet Lenticular lens sheet

1996-07-05

1998-03-03

Nelms, David C.

Optical: systems and elements

Single channel simultaneously to or from plural channels

By surface composed of lenticular elements

359455, G02B 2710

Patent

active

057241880

ABSTRACT:
A double-faced lenticular lens sheet including at least one incident side lens formed on a first face of the double-faced lenticular lens sheet; and at least one corresponding emergent side lens formed on a second opposite face of the double-faced lenticular lens sheet; wherein light rays incident on the at least one incident side lens parallel to an optical axis thereof pass through the lenticular lens sheet and emerge from the at least one emergent side lens; an angle of refraction .theta.1 is formed by a straight line parallel to an optical axis of the at last one incident side lens and a light ray refracted by an incident plane passing through the lenticular lens sheet; an angle of refraction .theta.2 is formed by a straight line parallel to an optical axis of the at least one emergent side lens and the light ray refracted by and emitted from an emergent plane; .DELTA..theta.1 is an absolute value of the angle of refraction .theta.1 on the incident plane; .DELTA..theta.2 is an absolute value of an angle of refraction given by (.theta.2-.theta.1) on the emergent plane; a ratio between .DELTA..theta.1 and .DELTA..theta.2 given by (.DELTA..theta.2/.DELTA..theta.1) is 1.0 or more when a center of the lenticular lens sheet rests on the optical axis of the at least one incident side lens and a width of the lenticular lens sheet is 80% or less of the lens pitch of the at least one incident side lens.

REFERENCES:
patent: 5420720 (1995-05-01), Gal et al.

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