发明名称 |
Off-axial three-mirror optical system with freeform surfaces |
摘要 |
An off-axial three-mirror optical system with freeform surfaces includes a primary mirror, a secondary mirror, a tertiary mirror, and a detector. 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 detector is located on a tertiary mirror reflecting light path. Each of the primary mirror, the secondary mirror, and the tertiary mirror is an xy polynomial freeform surface up to the fifth order. |
申请公布号 |
US9268123(B2) |
申请公布日期 |
2016.02.23 |
申请号 |
US201414571952 |
申请日期 |
2014.12.16 |
申请人 |
Tsinghua University;HON HAI PRECISION INDUSTRY CO., LTD. |
发明人 |
Zhu Jun;Yang Tong;Jin Guo-Fan;Fan Shou-Shan |
分类号 |
G02B5/10;G02B17/06;G01J1/42 |
主分类号 |
G02B5/10 |
代理机构 |
Novak Druce Connolly Bove + Quigg LLP |
代理人 |
Novak Druce Connolly Bove + Quigg LLP |
主权项 |
1. An off-axial three-mirror optical system with freeform surfaces comprising:
a primary mirror located on an incident light path, and configured to reflect an incident light to form a first reflected light; and a first three-dimensional rectangular coordinates system (X,Y,Z) is defined by a primary mirror vertex as a first origin; a secondary mirror located on a first reflected light path, and configured to reflect the first reflected light to form a second reflected light; a secondary mirror reflecting surface is a stop surface; and a second three-dimensional rectangular coordinates system is defined by a secondary mirror vertex as a second origin; and the second three-dimensional rectangular coordinates system is obtained by moving the first three-dimensional rectangular coordinates system (X,Y,Z) along a Z-axis negative direction; a tertiary mirror located on a second reflected light path, and configured to reflect the second reflected light to form a third reflected light; a third three-dimensional rectangular coordinates system is defined by a tertiary mirror vertex as a third origin; and the third three-dimensional rectangular coordinates system is obtained by moving the second three-dimensional rectangular coordinates system along a-Z-axis positive direction; and a detector is located on a third reflected light path and configured to receive the third reflected light; wherein a primary mirror surface is an xy polynomial surface up to the fifth order in the first three-dimensional rectangular coordinates system (X,Y,Z); a secondary mirror surface is an xy polynomial surface up to the fifth order in the second three-dimensional rectangular coordinates system; and a tertiary mirror surface is an xy polynomial surface up to the fifth order in the third three-dimensional rectangular coordinates system. |
地址 |
Beijing CN |