Laser line generating device

Patent metadata

Field	Value
Publication number	US-9562766-B2
Application number	US-201615057462-A
Country	US
Kind code	B2
Filing date	Mar 1, 2016
Priority date	Apr 11, 2014
Publication date	Feb 7, 2017
Grant date	Feb 7, 2017

Abstract

A laser beam generating device is provided for generating multiple mutually orthogonal light beams. The device includes a laser light generator that generates at least three output beams. A beamsplitter of the laser light generator has two incident surfaces orientated at forty-five degrees in relation to an optical axis. A first portion of a light from a light source is incident on a first of the two incident surfaces and output as a first output beam in a first direction orthogonal to the optical axis. A second portion of the light is incident on a second of the two incident surfaces and output as a second output beam in a second direction opposite the first direction. The light source is arranged in relation to the beamsplitter such that a third portion of the light bypasses the beamsplitter and forms a third output beam projected parallel to the optical axis.

First claim

The invention claimed is:

1. A laser beam generating device, comprising:
a housing;
a laser light generator disposed in the housing and operable to generate three output beams which project outside of the housing, the laser light generator including a light source projecting light along an optical axis toward a beamsplitter;
a leveling mechanism on which the laser light generator is disposed;
a collimating lens interposed on the optical axis between the light source and the beamsplitter;
a shaping member disposed between the collimating lens and the beamsplitter;
wherein a first portion of the light from the light source is directed by the beamsplitter in a first direction;
wherein a second portion of the light form the light source is directed by the beamsplitter in a second direction, different than the first direction;
wherein a third portion of the light from the light source passes alongside of the beamsplitter, whereby the light bypasses the beamsplitter and travels in a third direction;
wherein the shaping member separates the light from the light source into the first portion, the second portion and the third portion;
wherein the first direction is opposite the second direction and the first direction is at a ninety degree angle with respect to the third direction.

2. The laser beam generating device of claim 1 , wherein the beamsplitter includes a first reflective portion which reflects the first portion to the first direction.

3. The laser beam generating device of claim 2 , wherein the beamsplitter includes a second reflective portion which reflects the second portion to the second direction.

4. The laser beam generating device of claim 3 , wherein the beamsplitter comprises a triangular prism with a truncated portion and wherein the third portion bypasses the beam splitter by traveling through the area where the prism is truncated.

5. The laser beam generating device of claim 1 , wherein the leveling mechanism comprises a chassis and a gimbal assembly.

6. A laser beam generating device, comprising:
a housing;
a laser light generator disposed in the housing and operable to generate three output beams which project outside of the housing, the laser light generator including a light source projecting light along an optical axis toward a beamsplitter;
wherein a first portion of the light from the light source is directed by the beamsplitter in a first direction;
wherein a second portion of the light form the light source is directed by the beamsplitter in a second direction, different than the first direction; and
wherein a third portion of the light from the light source passes alongside of the beamsplitter.

7. The laser beam generating device of claim 6 , further including a collimating lens interposed on the optical axis between the light source and the beamsplitter.

8. The laser beam generating device of claim 7 , further comprising a shaping member disposed between the collimating lens and the beamsplitter, wherein the shaping member separates the light from the light source into the first portion, the second portion and the third portion.

9. The laser beam generating device of claim 6 , wherein the first direction is opposite the second direction.

10. The laser beam generating device of claim 6 , wherein the third portion of the light continues travelling along the optical axis after it passes alongside the beamsplitter.

11. The laser beam generating device of claim 6 , wherein the first direction is at a ninety degree angle to the optical axis.

12. The laser beam generating device of claim 11 , wherein the second direction is at a ninety degree angle to the optical axis.

13. The laser beam generating device of claim 6 , wherein the beamsplitter includes a first reflective portion which reflects the first portion to the first direction.

14. The laser beam generating device of claim 13 , wherein the beamsplitter includes a second reflective portion which reflects the second portion to the second direction.

15. The laser beam generating device of claim 6 , wherein the beamsplitter comprises a triangular prism with a truncated portion and wherein the third portion bypasses the beam splitter by traveling through the area where the prism is truncated.

16. The laser beam generating device of claim 6 , further comprising a leveling mechanism, wherein the laser light generator is disposed on the leveling mechanism.

17. The laser beam generating device of claim 16 , wherein the leveling mechanism comprises a chassis and a gimbal assembly.

18. A laser beam generating device, comprising:
a housing;
a laser light generator disposed in the housing and operable to generate three output beams which project outside of the housing, the laser light generator including a light source projecting light along an optical axis toward a beamsplitter;
a leveling mechanism on which the laser light generator is disposed;
a shaping member interposed on the optical axis between the light source and the beamsplitter;
wherein a first portion of the light from the light source is directed by the beamsplitter in a first direction;
wherein a second portion of the light form the light source is directed by the beamsplitter in a second direction, different than the first direction;
wherein a third portion of the light from the light source passes alongside of the beamsplitter, whereby the light bypasses the beamsplitter and travels in a third direction;
wherein the shaping member separates the light from the light source into the first portion, the second portion and the third portion;
wherein the first direction is opposite the second direction and the first direction is disposed at a ninety degree angle with respect to the third direction.

19. The laser beam generating device of claim 18 , wherein the beamsplitter includes a first reflective portion which reflects the first portion to the first direction; and
wherein the beamsplitter includes a second reflective portion which reflects the second portion to the second direction.

20. The laser beam generating device of claim 19 , wherein the leveling mechanism comprises a chassis and a gimbal assembly.

Assignees

• Black & Decker Inc

Inventors

• Bascom James P
• Chang Kun
• Jiang Jia Yong

Classifications

• G01C15/002

  Active optical surveying means (optical plumbing G01C15/105) · CPC title

• G01C15/004 Primary

  Reference lines, planes or sectors · CPC title