Beam splitter

Details Beam splitter Beam splitter

1997-03-31

1998-06-23

Phan, James

Optical: systems and elements

Having significant infrared or ultraviolet property

Multilayer filter or multilayer reflector

359583, 359589, G02B 508

Patent

active

057711186

ABSTRACT:
A beam splitter formed by laminating a plurality of optical films on a glass substrate having a refractive index of 1.51.+-.0.10. The optical films are first, second, third, fourth, and fifth layers laminated in this order from the glass substrate. The first layer has a refractive index of 1.44.+-.0.10 and an optical film thickness of 0.05-0.15; the second layer has a refractive index of 1.68.+-.0.10 and an optical film thickness of 0.01-0.10; the third layer has a refractive index of 1.44.+-.0.10 and an optical film thickness of 0.50-0.60; the fourth layer has a refractive index of 2.23.+-.0.10 and an optical film thickness of 0.25-0.35; and the fifth layer has a refractive index of 1.44.+-.0.10 and an optical film thickness of 0.25-0.35. The optical film thickness means a relative value represented by n.times.d/.lambda. where n denotes a refractive index; d denotes an actual film thickness, and .lambda. denotes a wavelength deciding the center of a wavelength band. The beam splitter can reduce the polarization dependency of a branching ratio with a beam incident angle of 22.5.degree..

REFERENCES:
patent: 3781090 (1973-12-01), Sumita
patent: 5449413 (1995-09-01), Beauchamp et al.
patent: 5552671 (1996-09-01), Parham et al.
patent: 5579138 (1996-11-01), Sonnohe et al.

Affiliated with

Also associated with

Rating

Beam splitter does not yet have a rating. At this time, there are no reviews or comments for this patent.

If you have personal experience with Beam splitter, we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Beam splitter will most certainly appreciate the feedback.

Rate now

Comments { 0 }

Profile ID: LFUS-PAI-O-1398464