Filter, method for producing filter, and laser wavelength monitoring apparatus
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United States of America Patent
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Jun 13, 2017
Grant Date -
Mar 24, 2016
app pub date -
Nov 25, 2015
filing date -
May 27, 2013
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Abstract
A filter includes two translucent bodies. Each of the translucent bodies has a first plane, a second plane that forms a wedge angle with the first plane, and a third plane that intersects with both the first plane and the second plane, first planes of the two translucent bodies are parallel to each other, and second planes of the two translucent bodies are parallel to each other. The filter also comprises a beam splitting film, where surfaces of both sides are respectively combined with the first planes of the two translucent bodies. Two reflective films are combined, respectively, with the second planes of the two translucent bodies.
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