OPTICAL ELEMENT

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United States of America Patent

APP PUB NO 20230130965A1
SERIAL NO

17968964

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Abstract

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The optical element for a low frequency band includes a substrate including a first main face and a second main face, the substrate having birefringence, and an antireflection film located on the first main face, wherein the low frequency band is lower than a reststrahlen band of the antireflection film, wherein an absolute value of a difference between a first refractive index and a second refractive index of the substrate in the low frequency band is 0.2 or more, and wherein a thickness of the substrate is 15 μm or more and 4000 μm or less.

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Patent Owner(s)

Patent OwnerAddress
HAMAMATSU PHOTONICS K K1126-1 ICHINO-CHO CHUO-KU HAMAMATSU-SHI SHIZUOKA 4358558 ?4358558

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Inventor(s)

Inventor Name Address # of filed Patents Total Citations
KAWADA, Yoichi Hamamatsu-shi, JP 33 99
SATOZONO, Hiroshi Hamamatsu-shi, JP 25 18
YASUDA, Takashi Hamamatsu-shi, JP 105 685

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Citation count rangeNumber of patents cited in rangeNumber of patents cited in various citation count ranges6751153018501 - 1011 - 2021 - 30050010001500200025003000350040004500500055006000650070007500

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