Laser meter

• US 6,751,879 B1
• Filed: 12/06/2002
• Issued: 06/22/2004
• Est. Priority Date: 12/06/2002
• Status: Expired due to Fees

• Current Assignee: Jian-Hua Pu
• Original Assignee: Jian-Hua Pu
• Inventors: Pu, Jian-Hua
• Primary Examiner(s): BENNETT, GEORGE B
• Application Number:
  US10/310,894
• Publication Number:
  US 20040107588A1
• Time in Patent Office: 564 Days
• Field of Search: 332/27, 332/62, 332/63, 332/81, 332/82, 332/85, 332/86, 333/70, 333/79, 33D/IG.21
• US Class Current: 33/286
• CPC Class Codes: G01C 15/002 Active optical surveying means optical plumbing G01C15/105
• CPC Class Codes: Y10S 33/21 with laser

Abstract

A laser meter includes a casing; a laser module inside the casing; and a reflection means coaxial with the laser module and having circular circumference. The laser meter can provide both horizontal and vertical light beam for mark and consumes lower power.

Claims

1. A laser meter comprising:

a casing;

a laser module inside the casing for generating light;

a reflection means coaxial with the laser module and having circular circumference for radially projecting the light in substantially planar manner therefrom.

2. The laser meter as in claim 1, wherein the casing has a base to provide vertical and horizontal beam.

3. The laser meter as in claim 1, wherein the casing includes a base having an adjusting screw coupled thereto.

4. The laser meter as in claim 1, wherein the reflection means has a through hole along the axis of the laser.

5. The laser meter as in claim 1, wherein the reflection means has a bubble level on top thereof.

6. The laser meter as in claim 1, wherein the casing has a bolt at longitudinal circumference thereof.

7. The laser meter as in claim 1, wherein the laser module is operable to direct an annular light beam onto the reflection means.

8. The laser meter as in claim 1, wherein the reflection means is made of light conducting material.

9. The laser meter as in claim 1, further comprising a reflecting disk to provide second reflection.

10. The laser meter as in claim 1, further comprising an enclosure formed outside the reflecting disk.

11. The laser meter as in claim 1, wherein the laser module has a screw for adjusting optical axis.

12. The laser meter as in claim 1, wherein the casing can be adjusted in omni direction.

13. The laser meter as in claim 1 or 12, wherein the casing includes a base having a level indicator and an adjusting screw.

14. The laser meter as in claim 1, wherein a supporting stage is provided to provide horizontal state for the casing.

15. The laser meter as in claim 1, wherein the casing is rotated for horizontal application.

16. The laser meter as in claim 1, wherein the reflection means is performed in an inner curve arc-shaped reflecting surface.