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| ZEISS Fiber Optic Projector |
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| Typical ZEISS Fiber optic star projector |
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The light is directed into the fiber bundles via an optical illuminating system. Each single fiber conducts the light directly to one of the tiny holes in the star mask. Every hole produces a star, with star brightness depending on the hole diameter. The star mask with its up to thousand perforations (or stars) can be compared to a transparency projected to the dome through a special projection lens. Every star mask represents a certain segment of the apparent celestial sphere.
Instead of illuminating the entire surface of the star mask, with only 0.001 percent of the light falling through the holes and thus being used for the star images, the fiber projector directs the light emitted by the lamp exclusively to the holes, with much higher efficiency. | |
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