Photochromic gyricon display

Photochromic light control mirror

Photochromic materials and photochromic compositions and...

Photochromic optical articles prepared with reversible...

Photochromic pyran compounds

Photochromic synthetic resin object with permanently...

Photochromic, electrochromic, photoelectrochromic and photovolta

Photochromic/vitroceramic window assembly

Photoconductive spread-spectrum communications system

Photoconductive-type liquid crystal light valve with a shielding

Photoconductivity reduction in cadmium telluride films for light

Photoconductor coupled liquid crystal light valve with impurity

Photocurable resin composition and optical lens produced therefr

Photoelastic modulator system

Photoelectric conversion element having an infrared transmissive

Photoelectric conversion, method light receiving circuit,...

Photoelectric current amplifying circuit

Photoelectric detector with coded pulse output

Photoelectric encoder

Photoelectric encoder