发明名称 |
Optical system |
摘要 |
Optical systems including first and second optical stacks and adapted to provide an adjustable dioptric correction are described. The first optical stack includes a first optical lens and a partial reflector. The second optical stack is convex along orthogonal first and second axes and includes a second optical lens and a reflective polarizer. The reflective polarizer has at least one first location having a radial distance r1 from an optical axis of the second optical stack and a displacement s1 from a plane perpendicular to the optical axis at an apex of the reflective polarizer, where s1/r1 is at least 0.1. A quarter wave retarder is disposed between the second optical stack and the first optical stack. |
申请公布号 |
US9581827(B1) |
申请公布日期 |
2017.02.28 |
申请号 |
US201514865168 |
申请日期 |
2015.09.25 |
申请人 |
3M INNOVATIVE PROPERTIES COMPANY |
发明人 |
Wong Timothy L.;Ouderkirk Andrew J.;Yun Zhisheng;McDowell Erin A.;Ambur Gregg A. |
分类号 |
G02B5/30;G02B27/28;G02B27/00;G02B27/01 |
主分类号 |
G02B5/30 |
代理机构 |
|
代理人 |
Richardson Clifton F. |
主权项 |
1. An optical system, comprising:
a first optical stack, the first optical stack comprising:
a first optical lens; anda partial reflector having an average optical reflectance of at least 30% in a desired plurality of wavelengths; and a second optical stack disposed adjacent to the first optical stack and convex along orthogonal first and second axes, the second optical stack comprising:
a second optical lens;a reflective polarizer substantially transmitting light having a first polarization state and substantially reflecting light having an orthogonal second polarization state, at least one first location on the reflective polarizer having a radial distance r1 from an optical axis of the second optical stack and a displacement s1 from a plane perpendicular to the optical axis at an apex of the reflective polarizer, s1/r1 being at least 0.1; and a first quarter wave retarder disposed between the second optical stack and the first optical stack, wherein the optical system is adapted to provide an adjustable dioptric correction. |
地址 |
St. Paul MN US |