Optical apparatus and equipment

Number of patents in Portfolio can not be more than 2000

United States of America Patent

PATENT NO 11332409
APP PUB NO 20200172443A1
SERIAL NO

16694383

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Abstract

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A curved surface constituting a convex surface or a concave surface of each of a plurality of lenses includes at least a silicon nitride layer and another silicon nitride layer. An interlayer having a composition different from a composition of the silicon nitride layer and a composition of the other silicon nitride layer is arranged between the silicon nitride layer and the other silicon nitride layer, and a thickness of the interlayer is less than a thickness of the silicon nitride layer and a thickness of the other silicon nitride layer.

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Patent Owner(s)

Patent OwnerAddress
CANON KABUSHIKI KAISHAJAPAN

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Inventor(s)

Inventor Name Address # of filed Patents Total Citations
Hara, Koji Ichikawa, JP 109 519
Ina, Hideki Tokyo, JP 148 1850
Kawamura, Yoshihisa Yokohama, JP 106 1075
Nakagawa, Yoshiyuki Yokohama, JP 147 688
Suzuki, Yukinobu Koza-gun, JP 14 55
Yoshida, Ryo Kawasaki, JP 164 715

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