Radiation thermometer with a focusing system

• US 5,655,838 A
• Filed: 06/02/1995
• Issued: 08/12/1997
• Est. Priority Date: 06/03/1994
• Status: Expired due to Term

• Current Assignee: Land Instruments International Ltd. (Ametek Incorporated)
• Original Assignee: Land Instruments International Ltd. (Ametek Incorporated)
• Inventors: Ridley, Ian Hamilton, Fearnehough, Peter
• Primary Examiner(s): GUTIERREZ, DIEGO F
• Application Number:
  US08/460,654
• Time in Patent Office: 802 Days
• Field of Search: 374/130, 374/121, 374/141, 359/694, 359/823, 359/825, 250/201.2, 250/358.1, 396/144, 396/148, 396/373, 396/382
• US Class Current: 374/130
• CPC Class Codes: G01J 5/041 Mountings in enclosures or in a particular environment
• CPC Class Codes: G01J 5/05 Means for preventing contamination of the components of the optical system; Means for preventing obstruction of the radiation path
• CPC Class Codes: G01J 5/08 Optical arrangements
• CPC Class Codes: G01J 5/0806 Focusing or collimating elements, e.g. lenses or concave mirrors
• CPC Class Codes: G01J 5/0843 Manually adjustable
• CPC Class Codes: G01J 5/0859 Sighting arrangements, e.g. cameras

Abstract

A radiation thermometer assembly comprises a housing to a front end of which is movably mounted an objective lens housing. An eye piece is mounted to the radiation thermometer housing and is arranged to receive light passing through the objective lens. A control system causes relative movement between the objective lens housing and the radiation thermometer housing, the control system being connected to a manual control member for operating the control system. The control member is mounted to the radiation thermometer housing at a position spaced from the objective lens housing.

Claims

1. A radiation thermometer comprising a housing defining a front end;

an objective lens housing movably mounted to said front end;

an eye piece mounted to said radiation thermometer housing and arranged to receive light passing through said objective lens; and

control means for causing relative movement between said objective lens housing and said radiation thermometer housing, said control means being connected to a manual control member for operating said control means, the control member being mounted to said radiation thermometer housing at a position spaced from said objective lens housing and around said eye piece.

2. A thermometer according to claim 1, wherein said control member is positioned at the rear of said radiation thermometer housing.

3. A thermometer according to claim 1, wherein said eye piece is mounted at the rear of said radiation thermometer housing.

4. A thermometer according to claim 1, wherein said control member comprises a tube which is rotatably mounted about said eye piece.

5. A radiation thermometer comprising:

a housing defining a front end;

an objective lens housing movably mounted to said front end;

an eye piece mounted to said radiation thermometer housing and arranged to receive light passing through said objective lens; and

control means for causing relative movement between said objective lens housing and said radiation thermometer housing, said control means being connected to a manual control member for operating said control means, said control member being mounted to said radiation thermometer housing at a position spaced from said objective lens housing, said control means includes a pair of members connected together by a screw threaded spigot/socket connection,

wherein rotation of one of said members connected to said control member causes linear movement of said other member which is connected to said objective housing.

6. A thermometer according to claim 5, wherein said control member is positioned at the rear of said radiation thermometer housing.

7. A thermometer according to claim 5, wherein said eye piece is mounted at the rear of said radiation thermometer housing.

8. A thermometer according to claim 5, wherein said control member comprises a tube which is rotatably mounted about said eye piece.