Portable light providing plural beams of laser light

Patent metadata

Field	Value
Publication number	US-10837609-B2
Application number	US-201816022137-A
Country	US
Kind code	B2
Filing date	Jun 28, 2018
Priority date	Jun 30, 2017
Publication date	Nov 17, 2020
Grant date	Nov 17, 2020

Abstract

A portable light may comprise: a light body having an illumination, e.g., white, light source and one or more laser light sources, each light source being selectively energizable for producing light; and a switch for selectively energizing the illumination light source and/or the laser light sources. The one or more laser light sources provide diverging narrow beams of laser light, so as to appear as spaced apart dots or spots of laser light on objects illuminated by the beams of laser light. Because the laser light beams diverge, the distance between the dots is proportional to the distance to the object which the dots illuminate. A TIR optical element may also be disposed in front of the illumination light source for receiving the light produced thereby.

First claim

What is claimed is:

1. A portable light comprising:
a light body for receiving a source of electrical power;
an illumination light source supported by said light body and selectively energizable for producing illumination light that emanates away from said light body in a predetermined direction;
one or more laser light sources supported by said light body and selectively energizable for producing laser light, wherein said one or more laser light sources produce plural beams of laser light that emanate away from said light body substantially in the predetermined direction and that diverge from each other at a predetermined angle to become farther apart with increasing distance from the portable light, wherein the plural beams of laser light are produced without a diffraction grating; and
a switch supported by said light body for selectively energizing said illumination light source from the source of electrical power and for selectively energizing said laser light source from the source of electrical power.

2. The portable light of claim 1 wherein said one or more laser light sources includes:
one laser light source including a laser emission element that produces a beam of laser light and an optical element that receives the beam of laser light and emits plural beams of laser light that diverge from each other at the predetermined angle; or
plural laser light sources that each include a laser emission element that produces a beam of laser light and an optical element that emits the beam of laser light, said plural laser light sources being mounted to produce beams of laser light that diverge from each other at the predetermined angle;
whereby plural diverging beams of laser light are emitted thereby without a diffraction grating.

3. The portable light of claim 1 wherein said one or more laser light sources include a registration feature on an external surface thereof disposed in predetermined registration with a plane defined by the plural beams of laser light emitted therefrom.

4. The portable light of claim 3 wherein the registration feature has an axis oriented substantially parallel to an axis of an optical beam splitter.

5. The portable light of claim 1 wherein said illumination light source includes a shaped optically clear element having a polished curved external side surface and a flat forward surface whereat the illumination light exits said illumination light source through the flat forward surface, and wherein said one or more laser light sources are supported by said shaped optically clear element.

6. The portable light of claim 1 wherein said switch is operable so that only one of the illumination light source and the one or more laser light sources is energized at a given time.

7. The portable light of claim 1 wherein the plural diverging beams of laser light that emanate away from said light body substantially in the predetermined direction define a plane that is substantially parallel to the predetermined direction or define a plane that is diverging from the predetermined direction.

8. The portable light of claim 7 wherein said one or more laser light sources are moveable for rotating the plane defined by the diverging beams of laser light relative to said light body; or for repositioning the plane defined by the diverging beams of laser light relative to said light body.

9. The portable light of claim 1 wherein said one or more laser light sources are supported by a shaped optical element of said illumination light source or are supported by a receptacle of said light body.

10. The portable light of claim 9 wherein said one or more laser light sources are moveable for rotating a plane defined by the diverging beams of laser light relative to said light body or for repositioning the plane of laser light relative to said light body.

11. The portable light of claim 1 wherein said one or more laser light sources comprise a laser light source that produces plural diverging beams of laser light and that:
is supported by a reflective element of said illumination light source; or
is supported by a reflective element of said illumination light source and is rotatable relative thereto; or
is supported by a receptacle of said light body; or
is supported by a receptacle of said light body and is rotatable relative thereto.

12. The portable light of claim 1 wherein said one or more laser light sources comprise plural laser light sources that:
are supported by a reflective element of said illumination light source; or
are supported by a reflective element of said illumination light source and are rotatable relative thereto; or
are supported by one or more receptacles of said light body; or
are supported by one or more receptacles of said light body and are rotatable relative thereto.

13. The portable light of claim 1 wherein said one or more laser light sources further include a laser emission element and a support for a beam splitting element wherein:
the support for the beam splitting element is rotatable relative to said light body; or
the laser emission element and the support for said beam splitting element are rotatable relative to said light body.

14. The portable light of claim 1 wherein said illumination light source includes:
an optical element for forming light produced by said illumination light source into a predetermined beam configuration; or
an optical element for forming light produced by said illumination light source into a predetermined beam configuration, said optical element having a recess therein for receiving a beam modification element therein.

15. The portable light of claim 1 wherein said one or more laser light sources are supported by said light body relatively nearer to a base end thereof than is said illumination light source.

16. The portable light of claim 1 wherein said one or more laser light sources include plural laser light sources each emitting a beam of laser light along an axis thereof and each supported interior to said light body behind an optical element of said illumination light source, said optical element having plural bores therethrough that are aligned with the respective axes of said plural laser light sources for passing the respective beams of laser light produced thereby.

17. A portable light comprising:
a light body for receiving a source of electrical power;
an illumination light source supported by said light body and selectively energizable for producing illumination light that emanates away from said light body in a predetermined direction;
plural laser light sources supported by said light body and selectively energizable for producing laser light, wherein said plural laser light sources are mounted for producing plural beams of laser light that emanate away from said light body substantially in the predetermined direction and that diverge from each other at a predetermined angle to become farther apart with increasing distance from the portable light, whereby the plural beams of laser light are produced without a diffraction grating; and
a switch supported by said light body for selectively energizing said illumination light source from the source of electrical power and for selectively energizing said laser light source from the source of electrical power.

18. The portable light of claim 17 wherein said illumination light source includes a shaped optically clear element having a polished curved external side surface and a flat forward surface whereat the illumination light exits said illumination light source through the flat forward surface, and whe

Assignees

• Streamlight Inc

Inventors

• Sharrah Raymond L
• Boris Thomas D
• Keeley Donald J
• Dineen Michael F

Classifications

• F21W2111/10

  for personal use, e.g. hand-held · CPC title

• F21V33/0076

  Safety or security signalisation, e.g. smoke or burglar alarms, earthquake detectors; Self-defence devices · CPC title

• F21V23/0414

  specially adapted to be used with portable lighting devices · CPC title

• F21V14/045

  in portable lighting devices · CPC title

• F21V5/006

  applied to portable lighting devices · CPC title