Burns, Doane, Swecker & Mathis, L.L.P.
Optical filter device and method of making same
The optical waveguide includes an optical waveguide layer, and a filter element including an ultraviolet curing liquid crystal layer disposed in a position which divides the optical waveguide layer in a waveguide direction. The ultraviolet curing liquid crystal layer having a twisted structure in which a helical pitch after curing reflects light of a predetermined wavelength.
Minolta Co., Ltd.
G
G02B
inventional
Toshiharu Takuji
Mori Hatano