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| Number | Title | Issue Date |
| 4129357 | Partial polarizer filter A birefringent filter module comprises, in seriatum, an entrance polarizer, a first birefringent crystal responsive to optical energy exiting the entrance polarizer, a partial polarizer responsive to optical energy exiting the first polarizer, a second bi... | 12/12/1978 |
| 4123141 | Window system comprising light polarizers A window construction adapted to permit or prevent light transmission including first and second fixed polarizer panels and a moveable panel between the polarizer panels comprising a polarizer and a wave retarder. The first fixed polarizer panel comprises... | 10/31/1978 |
| 4017156 | Electro-optical display device An electro-optical display device which has linear polarizer, a 1/4-spectrum plate, a twisted nematic electro-optical cell disposed between the polarizer and the 1/4-spectrum plate, and a power source for applying an electric field to the cell. This devic... | 04/12/1977 |
| 4006426 | Device for treating a laser light pulse The invention concerns a device for treating a laser light pulse and comprises, aligned successively on a same axis, a polarizer, an optical rotator, semi-reflecting plates and a reflector. The device can be applied to high-power lasers.... | 02/01/1977 |
| 3982818 | Optical device with liquid coating An optical device for use with laser systems comprising a crystal having a liquid coating. The material comprising the liquid coating is characterized by an index of refraction which is closer to at least one principal index of refraction of the crystal t... | 09/28/1976 |
| 3960438 | Reflective displays Electrically controllable reflective displays are formed which utilize ambient light and which can be viewed from a wide angular view.... | 06/01/1976 |
| 3940203 | Image-forming apparatus Apparatus for forming at or closer than infinity an image of a primary image source is disclosed. The apparatus employs a reflection-type holographic analog of a spherical mirror and a birefringent array of optical elements. The primary image source is li... | 02/24/1976 |
| 3938877 | Hyperfine filter for the resonance lines of caesium and rubidium A hyperfine filter for the resonance lines of alkali metals, as caesium and rubidium, comprising: A cell transparent to the light rays and which contains vapours of the alkali metal to be filtered; Means for generating a magnetic field, into which is placed sa... | 02/17/1976 |
| 3935444 | Polarized light beam source in a vehicle headlight A polarizer structure for a headlight includes an interference-type polarizer followed by an absorption-type polarizer. The interference-type polarizer in one form of the invention is constituted by rectangular plate polarizing sections in a zigzag arrang... | 01/27/1976 |
