发明名称 |
OBJECTIVE OPTICS WITH INTERFERENCE FILTER |
摘要 |
Optical apparatus includes an image sensor and an optical assembly, which is configured to focus optical radiation via an aperture stop onto the image sensor. The optical assembly includes a plurality of optical surfaces, consisting of a first, curved surface through which the optical radiation enters the assembly, a final surface through which the rays exit the assembly toward the image sensor, and at least two intermediate surfaces between the first and final surfaces. An interference filter, which has a center wavelength and a passband no greater than 4% of the center wavelength, and includes a coating formed on one of the optical surfaces. All rays of the optical radiation passing through the aperture stop are incident on the coating over a range of incidence angles with a half-width that is no greater than three fourths of the numerical aperture of the optical assembly. |
申请公布号 |
US2014211073(A1) |
申请公布日期 |
2014.07.31 |
申请号 |
US201414231761 |
申请日期 |
2014.04.01 |
申请人 |
PRIMESENSE LTD. |
发明人 |
Shpunt Alexander;Bezdin Haim;Yalov Shimon |
分类号 |
G02B5/28 |
主分类号 |
G02B5/28 |
代理机构 |
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代理人 |
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主权项 |
1. Optical apparatus, comprising:
an image sensor; and an optical assembly, which is configured to focus optical radiation via an aperture stop onto the image sensor, and which comprises:
a plurality of optical surfaces, including a curved surface having a center of curvature in a vicinity of the aperture stop; andan interference filter comprising a coating formed on the curved surface whose center of curvature is in the vicinity of the aperture stop. |
地址 |
Tel Aviv IL |