Projector capable of projecting polarized illumination light

Details Projector capable of projecting polarized illumination light Projector capable of projecting polarized illumination light

1997-10-28

1999-12-21

Lee, Eddie C.

Photocopying

Projection printing and copying cameras

Copying sound record

G03B 2100

Patent

active

06005655&

ABSTRACT:
A projector is provided with a first lens array, a polarized beam splitter for splitting a beam of light into beams of linearly polarized light components whose polarization axes are normal to each other, a second lens array in vicinity of a position where the beams of linearly polarized light components converge, and a converter for converting one of the linearly polarized light components so as to have the same axes of polarization as the other linearly polarized light components. The polarized beam splitter includes a prism having the following relationship: ##EQU1## wherein .psi. denotes an angle of incidence with respect to the parallel plate, W denotes a width of the first lens, H denotes a height of the first lens, F denotes a focal length of the first lens, and N denotes a refractive index of the prism.

REFERENCES:
patent: 5172254 (1992-12-01), Atarashi et al.
patent: 5387953 (1995-02-01), Minoura et al.
patent: 5446510 (1995-08-01), Mitsutake et al.
patent: 5626409 (1997-05-01), Nakayama et al.
patent: 5743611 (1998-04-01), Yamaguchi et al.

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