Cross dichroic prism, method of making the same, and full-color

Details Cross dichroic prism, method of making the same, and full-color Cross dichroic prism, method of making the same, and full-color

1998-09-02

2000-08-08

Epps, Georgia

Optical: systems and elements

Single channel simultaneously to or from plural channels

By partial reflection at beam splitting or combining surface

353 81, 353 20, 359831, G02B 2714

Patent

active

061010413

ABSTRACT:
A cross dichroic prism comprises four triangular prisms having isosceles right triangular cross sections identical in shape, opposing side faces thereof being bonded and secured together with rectangular portions thereof facing each other; and a dichroic film having an X-shaped cross section formed between the bonding faces of the triangular prisms; wherein, of the four triangular prisms, a given prism and at least one of the prisms adjacent thereto have a refractive index difference therebetween of 0.00005 or less, and the remaining two prisms opposed thereto have a refractive index difference therebetween of 0.00005 or less.

REFERENCES:
patent: 5909944 (1999-06-01), Yajima et al.
patent: 5918961 (1999-07-01), Ueda

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