Illumination Device with Solid State "Array" Emitters

• US 20100283404A1
• Filed: 06/23/2008
• Published: 11/11/2010
• Est. Priority Date: 06/21/2007
• Status: Abandoned Application

• Current Assignee: L-3 Communications SPD Technologies, Inc. (L3Harris Technologies, Inc.)
• Original Assignee: L-3 Communications SPD Technologies, Inc. (L3Harris Technologies, Inc.)
• Inventors: Thoren, Glenn R. SR.
• Application Number:
  US12/144,053
• Publication Number:
  US 20100283404A1
• Time in Patent Office: Days
• US Class Current: 315/294
• CPC Class Codes: F41G 1/35 for illuminating the target , e.g. flash lights
• CPC Class Codes: F41G 1/473 for lead-indicating or range-finding, e.g. for use with rifles or shotguns

Abstract

An illumination device utilizes one or more laser array emitters to provide a compact, high power light source useful for illuminating objects or areas of interest and in searching for items that may fluores when illuminated by light that interacts with material in or on the items. The illumination device is capable of providing a retina safe output at an object based on the distance from the illuminator to the object.

Claims

1. An illumination device, comprising:

a housing;

a power supply;

a first array of laser emitters having a first principal wavelength disposed at least partially in the housing;

a second array of laser emitters having a second principal wavelength disposed at least partially in the housing; and

a selector that allows a user to selectively couple the power supply to the first and the second array of emitters.

2. The illumination device of claim 1, further comprising an afocal beam expander for controlling the divergence of an exiting light beam.

3. The illumination device of claim 2, wherein the device has a user adjustable actuator coupled to one of the first lens and the second lens that allows the user to adjust the divergence of the exiting light beam.

4. The illumination device of claim 1, wherein a variable laser driver circuit controls the output power of the first array of laser emitters to provide a retina safe output at an object based on the distance from the device to the object.

5. An illumination device, comprising:

a housing;

a power supply;

a laser emitter disposed at least partially in the housing; and

a variable laser driver circuit, the variable laser driver circuit configured to provide a retina safe output at an object based on a distance from the device to the object.

6. The illumination device of claim 5, wherein a variable laser driver circuit controls the output power of the laser emitter to provide a retina safe output at the object.

7. An illumination device, comprising:

a housing,

a power supply,

a laser emitter disposed at least partially in the housing and aligned with an afocal beam expander,

an electrically controllable actuator configured to provide a retina safe output at an object based on a distance from the device to the object by adjusting the distance between lenses of the afocal beam expander.

8. The illumination device of claim 7, wherein the adjusting of the distance between the lenses of the afocal beam expander adjusts the divergence of the light beam from the laser emitter.