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| Number | Title | Issue Date |
| 7352339 | Diffuse illumination systems and methods The systems and methods disclosed herein relate to sources of diffuse illumination for providing substantially uniform illumination to a surface. The diffuse illumination arises from varying the diffusion angle of light generated by an LED system. To vary the diffus... | 04/01/2008 |
| 7331692 | Light beam projector with filter set rotating on its own axis A light beam projector has a light source and a reflector arranged to have light generated by the light source converge into a light beam. The reflector has a hollow curved surface with a focal point where the light source is positioned, and a filter able to change ... | 02/19/2008 |
| 6994459 | In lighting An optical unit for an aircraft warning light comprising an array of LEDs, the unit comprising a transparent plastics molded body having first and second opposing faces and being provided with optical means on its first and optionally also its second face to propaga... | 02/07/2006 |
| 6970296 | Signaling device for traffic signals A signaling device includes a light source and a Fresnel optical system. Constructed in the form of ellipses on its rear side, the Fresnel optical system has defocusing lenses that form elongated focal areas in the focal plane. Despite the use of a light source of s... | 11/29/2005 |
| 6894623 | Display monitor for multi-optical-path photoelectric safety apparatus and multi-optical-path photoelectric safety apparatus including a display monitor A display monitor is provided for a multi-optical-path photoelectric safety apparatus including a plurality of multi-optical-path photoelectric sensor units. The user can determine whether a special function such as blanking is set for each optical path in a group w... | 05/17/2005 |
| 6720879 | Animal collar including tracking and location device This invention relates to an animal collar for locating and tracking animals. The animal collar is provided with a digital video camera that may be remotely controlled transmit real time full motion video signals over a broadband wireless communication network to al... | 04/13/2004 |
| 6204832 | Image display with lens array scanning relative to light source array A point source array generates an array of output beams defining a plurality of image pixels. A microlens array receives the output beams and direct them toward desired pixel locations. Either one or both of the point source array and microlens array are ... | 03/20/2001 |
| 6150949 | Optical display device An optical display device for the representation of signs, especially road signs, in a display frame attached to a support device. The display frame is comprised of strip-shape display segments located at a distance from each other. In order to obtain a s... | 11/21/2000 |
| 5874901 | Electronic equipment A display device of electronic equipment comprises a display portion attached to a movable unit having a light incident surface through which light enters and a tip end surface for emitting light which enters through the light incident surface. Light emit... | 02/23/1999 |
| 5452138 | Deformable mirror device with integral color filter A deformable mirror device comprises a plurality of groups of colored mirrors responsive to electronic signals. Each group of mirrors is coated with a mixture of resist and dye thereby reflecting specified wavelengths of visible light.... | 09/19/1995 |
| 4047799 | Multi-color hand signal A hand-held color signal includes a curved reflector and first and second members of different colors. A hand-controlled control member causes a selected one of the colored members to be positioned for reflection by the reflector, thereby providing a sign... | 09/13/1977 |
