LENS UNIT, INFRARED LENS, METHOD FOR MANUFACTURING INFRARED LENS AND INFRARED IMAGING DEVICE
PROBLEM TO BE SOLVED: To provide a compact and low cost lens unit capable of easily inserting an infrared lens in a lens barrel in an assembling process, and to provide an infrared imaging device. SOLUTION: In the lens unit A composed by inserting a plurality of first to third infrared lenses 21, 22...
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| Format: | Patent |
| Sprache: | eng |
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| Zusammenfassung: | PROBLEM TO BE SOLVED: To provide a compact and low cost lens unit capable of easily inserting an infrared lens in a lens barrel in an assembling process, and to provide an infrared imaging device. SOLUTION: In the lens unit A composed by inserting a plurality of first to third infrared lenses 21, 22, 23 formed by sintering zinc sulfide raw material powder by a hot press method in the lens barrel 1, there formed are groove parts 22a, 23a releasing compressed air between lenses in lens insertion on flange parts 22b, 23b of second and third infrared lenses 22, 23. COPYRIGHT: (C)2009,JPO&INPIT |
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