Optical: systems and elements – Polarization without modulation – By relatively adjustable superimposed or in series polarizers
Patent
1993-02-18
1995-08-08
Lerner, Martin
Optical: systems and elements
Polarization without modulation
By relatively adjustable superimposed or in series polarizers
359496, 359497, G02B 530, G02B 2728
Patent
active
054404240
ABSTRACT:
A polarizer optical device for receiving and transmitting light is provided. The polarizer optical device includes a light separating section for separating the light into two polarization components which are othogonal with respect to one another. Further, the optical device is provided with a polarization rotating section for rotating the two polarization components so that a phase difference between the two polarization components othogonal to each other is 1/2.lambda.. Finally, a light combining section is provided for combining the light into a outputted light beam. The light combining section may be formed with a combination of birefringent prisms and isotropic mediums interfacing one another. In these configurations, the refractive index of each prism or medium is selected so that an angle formed with two unparallel incident lights differs from an angle formed with two output or transmitted lights. The two unparallel incident lights and the two output lights travel on a plane surface which is vertical with respect to the interface surface between the two prisms.
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Itoh Yoshitaka
Sonehara Tomio
Uchiyama Shoichi
Wu Jin-Jei
Lerner Martin
Seiko Epson
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