公开(公告)号：WO2006023528A3

公开(公告)日：2006-06-08

申请号：PCT/US2005029207

申请日：2005-08-17

Applicant: CHEMIMAGE CORP ,  WANG CHENHUI

Inventor： WANG CHENHUI

IPC: G02F1/1335

CPC classification number: G02B5/283 ,  G01J1/0488 ,  G01J1/429 ,  G01J3/0224 ,  G01J3/26 ,  G01J2003/1213 ,  G02B5/287 ,  G02F1/13 ,  G02F1/1395 ,  G02F2201/16 ,  G02F2202/40 ,  G02F2203/055

Abstract: A wavelength bandpass filter for chemical imaging and similar uses is configured to minimize absorption in ultraviolet wavelengths and arranged in a Solc, Lyot or similar arrangement of stacked controllable birefringent cells. A number of tunable liquid crystal cells are placed successively in a stack along an optical path, each of the cells having an electrically tunable birefringent element, wherein the cells are dimensioned and arranged at respective angular orientations for passing a tuned bandpass wavelength. A polarizer is arranged at least at an output end for controlling a polarization orientation of light. The liquid crystal cells each comprise at least one supporting plate, an alignment layer and birefringent layer, and wherein the liquid crystal cells are at least 90% transmissive over a UV wavelength tuning range between 280 and 400?m or larger.

Abstract translation: 用于化学成像和类似用途的波长带通滤波器被配置为使紫外线波长中的吸收最小化并且以Solc，Lyot或类似布置的可堆叠的可控双折射单元布置。 多个可调谐液晶单元依次沿着光路放置在堆叠中，每个单元具有电可调双折射元件，其中单元的尺寸和尺寸设置成各自的角度取向以通过调谐的带通波长。 至少在输出端布置偏振器以控制光的偏振取向。 液晶单元各自包括至少一个支撑板，对准层和双折射层，并且其中液晶单元在280-400μm或更大的UV波长调谐范围内至少90％透射。