Invention Grant
- Patent Title: Off-axial three-mirror optical system with freeform surfaces
- Patent Title (中): 具有自由曲面的离轴三镜光学系统
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Application No.: US14571965Application Date: 2014-12-16
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Publication No.: US09268122B2Publication Date: 2016-02-23
- Inventor: Jun Zhu , Tong Yang , Guo-Fan Jin , Shou-Shan Fan
- Applicant: Tsinghua University , HON HAI PRECISION INDUSTRY CO., LTD.
- Applicant Address: CN Beijing TW New Taipei
- Assignee: Tsinghua University,HON HAI PRECISION INDUSTRY CO., LTD.
- Current Assignee: Tsinghua University,HON HAI PRECISION INDUSTRY CO., LTD.
- Current Assignee Address: CN Beijing TW New Taipei
- Agency: Novak Druce Connolly Bove + Quigg LLP
- Priority: CN201410077774 20140305
- Main IPC: G02B5/10
- IPC: G02B5/10 ; G02B17/06 ; G01J1/04
Abstract:
An off-axial three-mirror optical system with freeform surfaces includes a primary mirror, a secondary mirror, a tertiary mirror, and an image sensor. The primary mirror is located on an incident light path. The secondary mirror is located on a primary mirror reflecting light path. The tertiary mirror is located on a secondary mirror reflecting light path. The image sensor is located on a tertiary mirror reflecting light path. The primary mirror, the secondary mirror, and the tertiary mirror are all xy polynomial surfaces up to the sixth order. The off-axial three-mirror optical system with freeform surfaces can achieve push-broom image with small F-number and large field angles.
Public/Granted literature
- US20150253552A1 OFF-AXIAL THREE-MIRROR OPTICAL SYSTEM WITH FREEFORM SURFACES Public/Granted day:2015-09-10
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