Infrared zoom illuminator
First Claim
1. A portable infrared zoom illuminator including in combination:
- a housing having a light exit opening therein;
an infrared laser light source mounted in said housing;
a power supply located in said housing;
switch means selectively interconnecting and disconnecting said light source and said power supply;
focusing lens means comprising a cylindrical micro lens of gradient index material mounted in said housing between said light source and the light exit opening in said housing; and
means coupled with said lens means for moving said lens moved toward and away from said light source to change the focus of light exiting from said light exit opening in said housing from a predetermined maximum divergence to the narrow collimated width of the beam of light produced by said infrared laser light source.
3 Assignments
0 Petitions
Accused Products
Abstract
An infrared zoom illuminator is contained in a cylindrical housing which may be hand-held. Power is provided to an infrared laser light source from batteries contained in the housing, and a micro lens made of gradient index material is placed between a light exit opening in the housing and the laser light source. Provision is made for selectively interconnecting and disconnecting the light source from the power supply and for changing the distance between the laser light source and the lens. This changes the focus of light exiting from the device from a predetermined maximum divergence, for illuminating a zone, down to the collimated narrow beam of light produced by the laser light source.
33 Citations
14 Claims
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1. A portable infrared zoom illuminator including in combination:
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a housing having a light exit opening therein; an infrared laser light source mounted in said housing; a power supply located in said housing; switch means selectively interconnecting and disconnecting said light source and said power supply; focusing lens means comprising a cylindrical micro lens of gradient index material mounted in said housing between said light source and the light exit opening in said housing; and means coupled with said lens means for moving said lens moved toward and away from said light source to change the focus of light exiting from said light exit opening in said housing from a predetermined maximum divergence to the narrow collimated width of the beam of light produced by said infrared laser light source. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8, 9, 10, 11, 12, 13, 14)
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Specification