Optical: systems and elements – Single channel simultaneously to or from plural channels – By partial reflection at beam splitting or combining surface
Patent
1998-06-04
2000-11-14
Epps, Georgia
Optical: systems and elements
Single channel simultaneously to or from plural channels
By partial reflection at beam splitting or combining surface
359247, 359254, 359586, G02B 2714, G02B 512, G02F 103
Patent
active
061478067
ABSTRACT:
A light separation apparatus using a flat plate including a wide band anti-reflection coating film, first and second dichroic mirrors, a wide band high-reflection coating film, an anti-reflection coating film, and a material forming the flat plate. The wide band anti-reflection coating film allows an incident light beam generated by a light source to penetrate into the material at a first angle without reflection. The first dichroic mirror allows only a light beam with a first wavelength to penetrate at the first angle and reflects light beams with other wavelengths at the second angle. The high-reflection coating film reflects at a second angle the light beam reflected by the first dichroic mirror. The second dichroic mirror allows only a light beam with a second wavelength to penetrate outside the material at the first angle so that it is parallel to the light beam with the first wavelength penetrated through the first dichroic mirror. The second dichroic mirror also reflects the light beam with a third wavelength at a second angle. The high-reflection coating film reflects the light beam reflected from the second dichroic mirror at the second angle. The anti-reflection coating film allows the light beam with the third wavelength to penetrate outside the material at the first angle without reflection so that it is parallel to the light beam with the second wavelength penetrated through the second dichroic mirror. The light beam penetrated through the wide band anti-reflection coating film and the light beams reflected from the first dichroic mirror, the second dichroic mirror, and the wide band high-reflection coating film pass through the material.
REFERENCES:
patent: 4125864 (1978-11-01), Aughton
patent: 4533215 (1985-08-01), Trias et al.
patent: 4720747 (1988-01-01), Crowley
patent: 5071225 (1991-12-01), Inoue
patent: 5253073 (1993-10-01), Crowley
patent: 5311321 (1994-05-01), Crowley
Hwang Young Mo
Park Jung Ho
Park Young Jun
Epps Georgia
Lucas Michael A
Samsung Electronics Co,. Ltd.
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