Combination laser level line and plumb line generator

• US 6,588,115 B1
• Filed: 03/18/2002
• Issued: 07/08/2003
• Est. Priority Date: 03/18/2002
• Status: Expired due to Fees

• Current Assignee: Dawei Dong
• Original Assignee: Dawei Dong
• Inventors: Dong, Dawei
• Primary Examiner(s): BENNETT, GEORGE B
• Application Number:
  US10/100,875
• Time in Patent Office: 477 Days
• Field of Search: 332/27, 332/83, 332/86, 332/97, 33D/IG.21, 362/119, 362/259, 359/362, 359/569, 359/622
• US Class Current: 33/227
• CPC Class Codes: G01C 15/004 Reference lines, planes or sectors
• CPC Class Codes: G01C 15/105 Optical plumbing
• CPC Class Codes: Y10S 33/21 with laser

Abstract

A combination laser level line and plumb line generation device that utilizes a single laser generator module to create perpendicular lines, a level line and a plumb line. In line with the laser generator module is a first optical unit that generates a vertical line. The first optical unit has a central aperture which allows a portion of non-refracted light to pass through. The non-refracted light then passes through a second optical unit, the second optical unit creating a horizontal line. With this configuration, the single laser generator module can be used to create a pair of orthogonal lines. This allows the elements to be manufactured into a simple and inexpensive combination laser level line and plumb line generation device.

Claims

1. A combination laser level line and plumb line generation device comprising:

a laser generator module to generate a light beam, and

a first optical element, and

a second optical element;

wherein

said first optical element operates on said light beam to create a first light line perpendicular to said light beam, said first optical element allowing an unaffected portion of said light beam to pass through said first optical element unaffected by said first optical element, and

said second optical element creates a second light line perpendicular to said light beam and also perpendicular to said first light line;

so that

a pair of orthogonal lines that are clearly visible to the user of said device are created.

2. The combination laser level line and plumb line generation device of claim 1, wherein:

said first optical element is a circular disk oriented with radial axes perpendicular to said light path.

3. The combination laser level line and plumb line generation device of claim 1, wherein:

said first optical element comprises a central aperture that allows a portion of said light beam to pass through said aperture unaffected by said first optical element.

4. The combination laser level line and plumb line generation device of claim 1, wherein:

at least a portion of said first optical element is cut away so as to allow a portion of said light beam to pass said first optical element unaffected by said first optical element.

5. The combination laser level line and plumb line generation device of claim 1, wherein:

said second optical element is a semicircular disk oriented with a center radius in line with said light path, and wherein

a flat edge of said second optical element is positioned toward said laser generator module.

6. The combination laser level line and plumb line generation device of claim 1, wherein:

said light beam passes through a focusing lens before said light beam is affected by said first and said second optical elements.

7. The combination laser level line and plumb line generation device of claim 6, wherein:

said first optical element is a circular disk oriented with radial axes perpendicular to said light path.

8. The combination laser level line and plumb line generation device of claim 6, wherein:

said first optical element comprises a central aperture that allows a portion of said light beam to pass through said aperture unaffected by said first optical element.

9. The combination laser level line and plumb line generation device of claim 6, wherein:

at least a portion of said first optical element is cut away so as to allow a portion of said light beam to pass said first optical element unaffected by said first optical element.

10. The combination laser level line and plumb line generation device of claim 6, wherein:

said second optical element is a semicircular disk oriented with a center radius in line with said light path, and wherein

a flat edge of said second optical element is positioned toward said laser generator module.