Optomechanical part for parabolic mirror fine rotation and on-axis linear positioning

Patent metadata

Field	Value
Publication number	US-11255788-B2
Application number	US-202016927534-A
Country	US
Kind code	B2
Filing date	Jul 13, 2020
Priority date	Apr 14, 2016
Publication date	Feb 22, 2022
Grant date	Feb 22, 2022

Abstract

An opto-mechanical apparatus including a hollow housing member having a first end and a second end, the housing member having a longitudinal axis, a parabolic mirror positioned on a side of to the first end of the housing member, and a mirror adjustment mechanism attached to the second end of the housing member, the mirror adjustment mechanism connected to the parabolic mirror through the housing member, the mirror adjustment mechanism configured to adjust an axial position of the parabolic mirror along the longitudinal axis and to adjust a radial position of the parabolic mirror about the longitudinal axis.

First claim

What is claimed is:

1. An opto-mechanical apparatus comprising:
a hollow housing member having a first end and a second end, the housing member having a longitudinal axis;
a parabolic mirror positioned on a side of the first end of the housing member;
a mirror adjustment mechanism attached to the second end of the housing member, the mirror adjustment mechanism connected to the parabolic mirror through the housing member, the mirror adjustment mechanism configured to simultaneously lock the parabolic mirror an axial position along the longitudinal axis and in a radial position about the longitudinal axis;
an axel extending through the housing member along the longitudinal axis of the housing member, the axel having a first end and a second end, wherein the first end of the axel is connected to the parabolic mirror;
a mirror support plate having a first end and a second end, wherein the first end of the mirror support plate is attached to the first end of the axel, and wherein the second end of the mirror support plate is attached to the parabolic mirror; and
a hollow retaining ring positioned between the mirror support plate and the housing member, the retaining ring contacting a return spring on one side of the retaining ring and contacting the mirror adjustment mechanism on the opposite side of the retaining ring, wherein the axel passes through the retaining ring.

2. The apparatus of claim 1 , further comprising:
a base plate having a first end and a second end, wherein the first end of the base plate is attached to the first end of the housing member, and wherein the axel passes through the base plate.

3. The apparatus of claim 1 , wherein the mirror adjustment mechanism comprises a first fine-adjustment screw at least partially screwed into the second end of the housing member, wherein a first end of the first fine-adjustment screw protrudes away from the second end of the housing member and a second end of the first fine-adjustment screw contacts the retaining ring, wherein the first fine-adjustment screw is rotatable to adjust the axial position of the parabolic mirror along the longitudinal axis.

4. The apparatus of claim 1 , further comprising a return spring positioned between the mirror support plate and the housing member.

5. The apparatus of claim 4 , wherein the mirror adjustment mechanism comprises:
a drive shaft, wherein the second end of the axel is attached to the drive shaft;
a stationary part attached to the second end of the housing member; and
a second fine-adjustment screw, wherein at least a portion of the second fine-adjustment screw is passed through the drive shaft, the second fine-adjustment screw having a first end and a second end, wherein the second end of the second fine-adjustment screw abuts the stationary part, wherein the second fine-adjustment screw is rotatable to adjust the radial position of the parabolic mirror about the longitudinal axis.

6. The apparatus of claim 1 , wherein the mirror adjustment mechanism comprises a locking screw configured to be received through a circumferential surface of the housing member connecting the first end and the second end of the housing member, the locking screw configured to simultaneously lock the parabolic mirror in the axial position and in the radial position.

7. A method comprising:
generating, by a light source, a light beam;
guiding the light beam to an opto-mechanical apparatus comprising:
a hollow housing member having a first end and a second end, the housing member having a longitudinal axis;
a parabolic mirror attached to the first end of the housing member;
a mirror adjustment mechanism attached to the second end of the housing member, the mirror adjustment mechanism connected to the parabolic mirror through the housing member, the mirror adjustment mechanism configured to simultaneously lock the parabolic mirror in an axial position along the longitudinal axis and in a radial position about the longitudinal axis; and simultaneously locking the parabolic mirror in the axial position and the radial position using the mirror adjustment mechanism to guide the light beam to irradiate an optical target; and
a locking screw configured to be received through a circumferential surface of the housing member of the opto-mechanical apparatus connecting the first end and the second end of the housing member of the opto-mechanical apparatus, the locking screw configured to lock the parabolic mirror in the axial position and in the radial position, and wherein the method further comprises locking the axial position and the radial position of the parabolic mirror of the opto-mechanical apparatus using the locking screw of the opto-mechanical apparatus.

8. The method of claim 7 , wherein the optical target comprises refined oil products or crude petroleum oils.

9. The method of claim 7 , wherein the optical target is irradiated with the light beam as the optical target flows through a pipeline.

10. The method of claim 7 , wherein the light source comprises a light-emitting diode.

11. The method of claim 7 , wherein the light beam has an intensity in a pico-Joule range and is smaller than 1 nano-Joule.

12. The method of claim 7 , wherein the light beam is a pulsed light beam.

Assignees

• Saudi Arabian Oil Co

Inventors

• Hegazi Ezzat
• Cunningham Vincent
• Brunner Christof
• Stamm Christoph

Classifications

• G02B7/004 Primary

  Manual alignment, e.g. micromanipulators · CPC title

• G01N2201/061

  Sources · CPC title

• G02B7/1825

  made by screws, e.g. for laser mirrors · CPC title

• G02B7/1821

  for rotating or oscillating mirrors · CPC title

• G02B5/10

  with curved faces · CPC title