发明名称 |
INFRARED OPTICAL ASSEMBLY AND INFRARED IMAGE CAPTURE DEVICE |
摘要 |
<p>[Object] To provide an infrared optical system and an infrared image capturing apparatus having good optical properties in a far infrared ray area while costs are reduced. [Solving Means] There is provided an infrared optical system includes a light collecting lens having a curved light collecting surface for collecting infrared light incident from an object side, the lens being made of resin having a stepped shape being gradually deeper from periphery to center; and an optical path length correction element for correcting a difference in an optical path length produced by the stepped shape of the light collecting lens. The above-described stepped shape is provided to allow the lens to be thinner than the lens having the plano-convex shape. In other words, the infrared transmittance of the optical system is improved. In addition, the optical path length correction element can correct a difference in an optical path length produced by the stepped shape of the light collecting lens.</p> |
申请公布号 |
EP2857882(A4) |
申请公布日期 |
2016.01.13 |
申请号 |
EP20130797255 |
申请日期 |
2013.05.14 |
申请人 |
SONY CORPORATION |
发明人 |
SAITO, MASAHIRO;KABASAWA, HIDETOSHI |
分类号 |
G02B13/14;G02B3/08;G02B13/18;H04N5/33 |
主分类号 |
G02B13/14 |
代理机构 |
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代理人 |
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主权项 |
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地址 |
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