公开(公告)号：US20230036774A1

公开(公告)日：2023-02-02

申请号：US17813392

申请日：2022-07-19

Applicant: ChemImage Corporation

Inventor： Lei SHI ,  George VENTOURIS

IPC: G02F1/1347 ,  G02B5/20

Abstract: A non-mechanical liquid crystal tunable filter (LCTF) assembly capable of switching between a multi-conjugate filter mode and a conformal filter mode is described. The non-mechanical LCTF architecture can include a plurality of LCTF components that each comprises a first optical filter comprising a first optical axis, a second optical filter comprising a second optical axis, wherein the second optical axis is rotated 90° relative to the first optical axis, and a first twisted nematic cell positioned between the first optical filter and the second optical filter, the first twisted nematic cell configured to polarize received light by 90° when a voltage is not applied and not polarize the received light when the voltage is applied. The non-mechanical LCTF assembly is configured to switch between a conformal filter mode and a multi-conjugate filter mode based on whether the voltage is applied to each of the plurality of LCTF components.

公开(公告)号：US20210356795A1

公开(公告)日：2021-11-18

申请号：US17322808

申请日：2021-05-17

Applicant: CHEMIMAGE CORPORATION

Inventor： Lei SHI ,  George VENTOURIS ,  Matthew P. NELSON ,  Patrick J. TREADO

IPC: G02F1/1347 ,  G02B27/28 ,  G02F1/139

Abstract: A multi-conjugate filter (MCF) can be operated in both a single bandpass mode and a multiple bandpass mode. By applying different voltages to different channels of a MCF, the MCF can be used to filter light into (1) a single narrow spectral output or (2) a broad ranged “white light” spectral output.