WHITE LIGHT SOURCE DEVICE
First Claim
Patent Images
1. A white light source device, comprising:
- an LED light source,a rod lens for emitting a uniform light beam from an exit end face after making an incoming light beam that entered an entrance end face from the LED light source uniform, anda fluorescent material sheet provided close to the exit end face of the rod lens.
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Accused Products
Abstract
Light beams emitted from a blue LED light source of a light source unit are condensed by a condenser lens to enter an entrance end face of a rod lens, and the light beams progress through while being repeatedly reflected several times inside the rod lens. Accordingly, the unevenness of brightness is reduced, and the light enters an fluorescent material sheet bonded to an exit end of the rod lens from the exit end as blue light which is uniformed in illuminance, and white light whose color is seen as the same color viewed in any direction of the fluorescent material sheet is emitted from the fluorescent material sheet.
91 Citations
7 Claims
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1. A white light source device, comprising:
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an LED light source, a rod lens for emitting a uniform light beam from an exit end face after making an incoming light beam that entered an entrance end face from the LED light source uniform, and a fluorescent material sheet provided close to the exit end face of the rod lens. - View Dependent Claims (2, 3, 4, 5, 6, 7)
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Specification