Assembly of beam splitters

Details Assembly of beam splitters Assembly of beam splitters

2006-04-18

2006-04-18

Ben, Loha (Department: 2873)

Optical: systems and elements

Single channel simultaneously to or from plural channels

C359S836000, C359S831000, C356S004010

Reexamination Certificate

active

07031062

ABSTRACT:
An assembly of beam splitters of the invention includes a roof-prism, a triangle prism and a complementary prism; wherein the roof-prism has a first emitting/receiving surface, the triangle prism has a second emitting/receiving surface and the complementary prism has a third emitting/receiving surface and a fourth emitting/receiving surface. A beam of first wavelength enters the assembly of beam splitters through the second emitting/receiving surface, and leaves it through the first emitting/receiving surface. A beam of second wavelength parallel to the beam of first wavelength enters the assembly of beam splitters through the second emitting/receiving surface, and leaves it through the third emitting/receiving surface. A beam of third wavelength enters the assembly of beam splitters through the fourth emitting/receiving surface, and leaves it through the first emitting/receiving surface. Thus, the optical axis of the beam of third wavelength is parallel to the optical axis of the beam of first wavelength. In addition, an optical rangefinder uses the assembly of beam splitters, and shows data in dark environment well.

REFERENCES:
patent: 3558207 (1971-01-01), Worthington
patent: 6441887 (2002-08-01), Kao
patent: 6945657 (2005-09-01), Shirai et al.

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