ETALON FILTER

PROBLEM TO BE SOLVED: To provide an etalon filter suitable as an optical device in which fluctuation in the transmission characteristics for light depending on temperature is decreased. SOLUTION: In the etalon filter 1 produced by forming a reflection film on both of the faces in the entrance side f...

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Bibliographic Details
Main Authors NISHI YASUHIRO, MIZUNO KAZUYASU
Format Patent
LanguageEnglish
Published 17.08.2001
Edition7
Subjects
BASIC ELECTRIC ELEMENTS
DEVICES USING STIMULATED EMISSION
ELECTRICITY
OPTICAL ELEMENTS, SYSTEMS, OR APPARATUS
OPTICS
PHYSICS
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Summary:PROBLEM TO BE SOLVED: To provide an etalon filter suitable as an optical device in which fluctuation in the transmission characteristics for light depending on temperature is decreased. SOLUTION: In the etalon filter 1 produced by forming a reflection film on both of the faces in the entrance side for the light and in the exit side for the light of a light transmitting medium, a member 2 having a different coefficient of linear expansion from that of the light-transmitting medium is formed in the region on both faces of the filter 1 except for the optical path region 4. The member having a different coefficient of thermal expansion acts as a stress applying means to apply the stress generated by the difference in the coefficient of linear expansion from the light-transmitting medium when the environmental temperature changes on the light-transmitting medium. Fluctuation in the transmission characteristics for light of the optical path region 4 depending on the temperature is decreased by the aforementioned stress.
Bibliography:Application Number: JP20000033314