FILTER AND DEVICE FOR GENERATING PSEUDO PARALLEL RAY
PURPOSE:To obtain a pseudo parallel ray with simple constitution, by passing linear light through a flat shape intermediate member on the surface of which a reflecting part and a non-reflecting part are arranged alternately via a cylindrical lens. CONSTITUTION:A beam of light emitted from a fluoresc...
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| Sprache: | eng |
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| Zusammenfassung: | PURPOSE:To obtain a pseudo parallel ray with simple constitution, by passing linear light through a flat shape intermediate member on the surface of which a reflecting part and a non-reflecting part are arranged alternately via a cylindrical lens. CONSTITUTION:A beam of light emitted from a fluorescent lamp 1 is changed to the linear light passing the cylindrical lens 3, and is made incident on the light input part 6 of a filter 5 for generating the pseudo parallel ray. The filter 5 consists of the reflecting part 11 and the non-reflecting part 12 arranged a alternately on the surface of a translucent intermediate member 9. Incident light to the filter 5 is reflected repeatedly on the reflecting part 11, and is changed to the pseudo parallel ray, then, it is emitted from a light output part 10. |
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