Camera and image pickup device unit

• US 20040090549A1
• Filed: 11/22/2002
• Published: 05/13/2004
• Est. Priority Date: 07/30/2002
• Status: Active Grant

• Current Assignee: Olympus Optical Company Ltd. (Olympus Corporation)
• Original Assignee: Olympus Optical Company Ltd. (Olympus Corporation)
• Inventors: Kawai, Sumio, Takizawa, Hiroyuki
• Granted Patent: US 7,280,145 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 is provided that includes a dust-proofing member which has a transparent portion through which a visible light component is transmitted among beams incident from a photographing lens and which absorbs an infrared component, opposed to the front of an image pick-up device at a predetermined interval. A member for vibration is arranged at a peripheral portion of the dust-proofing member, and applies vibrations to the dust-proofing member. And a sealing structure portion is arranged at a portion formed by opposing the image pick-up device and the dust-proofing member, for sealing a space portion that is substantially sealed at peripheral portions of the image pick-up device and the dust-proofing member.

Claims

1. A camera comprising:

an image pick-up device which obtains an image signal corresponding to beams irradiated onto a photoelectrically converting surface thereof;

a photographing lens which inputs a subject image onto the photoelectrically converting surface of the image pick-up device;

a dust-proofing member comprising a transparent portion through which a visible light component is transmitted among the beams incident from the photographing lens and which absorbs an infrared component, the transparent portion opposed to the front of the image pick-up device at a predetermined interval;

a member for vibration arranged at a peripheral portion of the dust-proofing member, which applies vibrations to the dust-proofing member;

a sealing structure portion arranged at a portion formed by opposing the image pick-up device and the dust-proofing member, the sealing structure portion sealing a space portion that is substantially sealed at peripheral portions of the image pick-up device and the dust-proofing member; and

an image signal processing circuit which converts an image signal obtained from the image pick-up device, corresponding to an image formed onto the photoelectrically converting surface of the image pick-up device, into a signal suitable to recording.

2. The camera according to claim 1, wherein the dust-proofing member comprises an infrared absorbing glass.

3. The camera according to claim 1, wherein the dust-proofing member is formed by adhering an infrared absorbing glass to a glass plate.

4. The camera according to claim 3 wherein the infrared absorbing glass is arranged on the side of the sealing space.

5. The camera according to claim 1, wherein the dust-proofing member has an infrared reflection membrane onto a surface of a glass plate.

6. The camera according to claim 5, wherein the infrared reflection membrane is formed onto a surface on the side opposed to the photographing lens.

7. The camera according to claim 5, wherein the infrared reflection membrane is formed to a surface on the side of the sealing space.

8. The camera according to claim 1, wherein the dust-proofing member has an infrared reflection membrane in an infrared absorbing glass.

9. The camera according to claim 8, wherein the infrared reflection membrane is formed onto a surface on the side opposed to the photographing lens.

10. The camera according to claim 8, wherein the infrared reflection membrane is formed onto a surface on the side of the sealing space.

11. The camera according to claim 1, wherein the dust-proofing member has a low-pass filter function which limits the transmission of a high spatial frequency component.

12. The camera according to claim 1, further comprising:

a photographing lens attaching unit for attaching the photographing lens,

wherein the photographing lens is detachable in the photographing lens attaching unit.

13. An image pick-up device unit comprising:

an image pick-up device which obtains an image signal corresponding to beams irradiated onto a photoelectrically converting surface thereof;

an optical member opposed to the front of the image pick-up device at a predetermined interval, which selectively absorbs an infrared component;

a member for vibration arranged at a peripheral portion of the optical member, which applies vibrations to the optical member; and

a sealing structure portion arranged at a portion formed by opposing the image pick-up device and the optical member, the sealing structure portion sealing a space portion that is substantially sealed at peripheral portions of the image pick-up device and the optical member.

14. The image pick-up device unit according to claim 13, wherein the optical member comprises an infrared absorbing glass.

15. The image pick-up device unit according to claim 13, wherein the optical member is formed by adhering an infrared absorbing glass to a glass plate.

17. The image pick-up device unit according to claim 13, wherein the optical member has an infrared reflection membrane onto a surface of a glass plate.

18. The image pick-up device unit according to claim 17, wherein the infrared reflection membrane is formed onto a surface on the light incident side.

19. The image pick-up device unit according to claim 17, wherein the infrared reflection membrane is formed to a surface on the side of the sealing space.

20. The image pick-up device unit according to claim 13, wherein the optical member has an infrared reflection membrane in an infrared absorbing glass.

21. The image pick-up device unit according to claim 20, wherein the infrared reflection membrane is formed onto a surface on the light incident side.

22. The image pick-up device un according to claim 20, wherein the infrared reflection membrane is formed onto a surface on the side of the sealing space.

23. The image pick-up device, unit according to claim 13, wherein the optical member has a low-pass filter function which limits the transmission of a high spatial frequency component.

24. The image pick-up device unit according to claim 23, wherein the optical member is an optical low-pass filter.

25. The image pick-up device unit according to claim 23, wherein the optical member is formed by adhering an infrared absorbing glass and an optical low-pass filter to a glass plate.

26. The image pick-up device unit according to claim 23, wherein the optical member is formed by adhering an infrared absorbing glass and an optical low-pass filter.

27. The image pick-up device unit according to claim 23, wherein the optical member is formed by adhering an optical low-pass filter having an infrared reflection membrane onto a glass plate.

28. The image pick-up device unit according to claim 13, further comprising:

a member for vibration arranged to a peripheral portion of the optical member, which applies vibrations to the optical member.

29. The image pick-up device unit according to claim 28, wherein the member for vibration is an electromechanical transducer.

30. The image pick-up device unit according to claim 29, wherein the electromechanical transducer is a piezoelectric element.

31. The image pick-up device unit according to claim 30, wherein the piezoelectric element is made of piezoelectric ceramics.

16. The image pick-up device unit according to claim wherein the infrared absorbing glass is arranged on the side of the sealing space.

32. A camera comprising:

an image pick-up device which obtains an image signal corresponding to beams irradiated onto a photoelectrically converting surface thereof;

a photographing lens which inputs a subject image onto a photoelectrically converting surface of the image pick-up device;

a dust-proofing member having a transparent portion through which a visible light component is transmitted among beams incident from the photographing lens and which limits the transmission of a predetermined high spatial frequency component, the dust-proofing member opposed to the front of the image pick-up device at a predetermined interval;

a member for vibration arranged to a peripheral portion of the dust-proofing member, which applies vibrations to the dust-proofing member;

a sealing structure portion arranged at a portion formed by opposing the image pick-up device and the dust-proofing member, the sealing structure portion sealing a space portion that is substantially sealed at peripheral portions of the image pick-up device and the dust-proofing member; and

an image signal processing circuit which converts an image signal obtained from the image pick-up device, corresponding to an image formed onto the photoelectrically converting surface of the image pick-up device, into a signal suitable to recording.

33. The camera according to claim 32, wherein the dust-proofing member is an optical low-pass filter.

34. The camera according to claim 32, wherein the dust-proofing member is formed by adhering an optical low-pass filter to a glass plate.

35. The camera according to claim 34, wherein the optical low-pass filter is arranged to the side of the sealing space.

36. The camera according to claim 32, wherein the dust-proofing member has a function for absorbing an infrared component.

37. The camera according to claim 32, further comprising:

a photographing lens attaching unit for attaching the photographing lens,

wherein the photographing lens is detachable in the photographing lens attaching unit.

38. An image pick-up device unit comprising:

an image pick-up device which obtains an image signal corresponding to beams irradiated onto a photoelectrically converting surface thereof;

an optical member opposed to the front of the image pick-up device at a predetermined interval, the optical member limits the transmission of a predetermined high spatial frequency component;

a vibration generating member arranged at a peripheral portion of the optical member, which applies vibrations to the optical member; and

a sealing structure portion arranged at a portion formed by opposing the image pick-up device and the optical member, the sealing structure portion sealing a space portion that is substantially sealed at peripheral portions of the image pick-up device and the optical member.

39. The image pick-up device unit according to claim 38, wherein the optical member is an optical low-pass filter.

40. The image pick-up device unit according to claim 38, wherein the optical member is formed by adhering an optical low-pass filter to a glass plate.

41. The image pick-up device unit according to claim 40, wherein the optical low-pass filter is arranged to the side of the sealing space.

42. The image pick-up device unit according to claim 38, wherein the optical member has a function for absorbing an infrared component.

43. The image pick-up device unit according to claim 38, wherein the optical member is formed by adhering an infrared absorbing glass and an optical low-pass filter onto a glass plate.

44. The image pick-up device unit according to claim 38, wherein the optical member is formed by adhering an infrared absorbing glass and an optical low-pass filter.

45. The image pick-up device unit according to claim 38, wherein the optical member is formed by adhering an optical low-pass filter having an infrared reflection membrane onto a glass plate.

46. The image pick-up device unit according to claim 38, further comprising:

a member for vibration arranged to a peripheral portion of the optical member, which applies vibrations to the optical member.

47. The image pick-up device unit according to claim 46, wherein the member for vibration is an electromechanical transducer.

48. The image pick-up device unit according to claim 47, wherein the electromechanical transducer is a piezoelectric element.

49. The image pick-up device unit according to claim 48, wherein the piezoelectric element is made of piezoelectric ceramics.