CAMERA HAVING A DUST-PROOFING MEMBER THAT IS VIBRATED TO REMOVE DUST, THE DUST-PROOFING MEMBER BEING PRESSED BY A SPRING PRESSING MEMBER TOWARD A SEALING PART THAT SEALS A SPACE BETWEEN THE DUST-PROOFING MEMBER AND AN IMAGE PICKUP-DEVICE

• US 20090051803A1
• Filed: 10/21/2008
• Published: 02/26/2009
• Est. Priority Date: 07/30/2002
• Status: Active Grant

• Current Assignee: OM Digital Solutions Corporation
• Original Assignee: Olympus Optical Company Ltd. (Olympus Corporation)
• Inventors: TAKIZAWA, Hiroyuki, Kawai, Sumio
• Granted Patent: US 7,686,524 B2
• Time in Patent Office: Days
• US Class Current: 348/340
• CPC Class Codes: H04N 23/52 Elements optimising image sensor operation, e.g. for electromagnetic interference [EMI] protection or temperature control by heat transfer or cooling elements
• CPC Class Codes: H04N 23/54 Mounting of pick-up tubes, electronic image sensors, deviation or focusing coils
• CPC Class Codes: H04N 23/811 by dust removal, e.g. from surfaces of the image sensor or processing of the image signal output by the electronic image sensor

Abstract

A camera includes a dust-proofing member which has a transparent portion through which a visible light component is transmitted. The transparent portion is opposed to the front of an image pick-up device at a predetermined interval. A vibration member is arranged at a peripheral portion of the dust-proofing member and vibrates the dust-proofing member. A sealing part seals a space between the image pick-up device and the dust-proofing member. And a spring pressing member presses the dust-proofing member at a periphery thereof toward the sealing part.

Claims

1. An image pick-up device unit comprising:

an image pick-up device which comprises a photoelectrically converting surface, and which produces an image signal corresponding to beams irradiated onto the photoelectrically converting surface;

an optical member which is opposed to a front of the image pick-up device at a predetermined interval;

a vibration member which is arranged at a peripheral portion of the optical member, and which vibrates the dust-proofing member; and

a spring pressing member which presses the dust proofing member at periphery thereof toward the sealing part.

2. The image pick-up unit according to claim 1, wherein the spring pressing member presses the dust proofing member at a plurality of points on the periphery thereof.

3. The image pick-up device unit according to claim 1, wherein the optical member comprises an infrared absorbing glass and an infrared reflection layer is provided on the surface of the infrared absorbing glass.

4. The image pick-up device unit according to claim 1, wherein the optical member has a low-pass filter function which limits transmission of a high spatial frequency component.

5. The image pick-up device unit according to claim 4, wherein the optical member comprises an optical low-pass filter.

6. The image pick-up device unit according to claim 4, wherein the optical member is formed by adhering an infrared absorbing glass and an optical low-pass filter to a glass plate.

7. The image pick-up device unit according to claim 4, wherein the optical member is formed by adhering an infrared absorbing glass and an optical low-pass filter.

8. The image pick-up device unit according to claim 4, wherein the optical member is formed by adhering an optical low-pass filter having the infrared reflection layer onto a glass plate.

9. The image pick-up device unit according to claim 1, wherein the vibration member comprises an electromechanical transducer.

10. The image pick-up device unit according to claim 9, wherein the electromechanical transducer comprises a piezoelectric element.

11. The image pick-up device unit according to claim 10, wherein the piezoelectric element is made of piezoelectric ceramics.