Image picking-up and processing apparatus

• US 4,947,245 A
• Filed: 05/22/1989
• Issued: 08/07/1990
• Est. Priority Date: 05/23/1988
• Status: Expired due to Fees

• Current Assignee: J Morita Manufacturing Corporation (J. Morita Corporation)
• Original Assignee: Kabushiki Kaisha Morita Seisakusho, Sumitomo Electric Industries Limited (Sumitomo Corporation)
• Inventors: Yoshimura, Kouzou, Nishimoto, Shinichi, Ogawa, Ichirou, Ueshima, Kenzou
• Primary Examiner(s): Britton, Howard W.
• Application Number:
  US07/354,993
• Time in Patent Office: 442 Days
• Field of Search: 358/98, 128/6
• US Class Current: 348/66
• CPC Class Codes: A61B 1/00101 the distal tip features being detachable
• CPC Class Codes: A61B 1/00105 characterised by modular construction
• CPC Class Codes: A61B 1/00165 with light-conductive means, e.g. fibre optics A61B1/07 takes precedence
• CPC Class Codes: A61B 1/00174 characterised by the viewing angles
• CPC Class Codes: A61B 1/042 characterised by a proximal camera, e.g. a CCD camera
• CPC Class Codes: A61B 1/044 for absorption imaging
• CPC Class Codes: A61B 1/0607 for annular illumination
• CPC Class Codes: A61B 1/0615 for radial illumination
• CPC Class Codes: A61B 1/0623 for off-axis illumination
• CPC Class Codes: A61B 1/24 for the mouth, i.e. stomatoscopes, e.g. with tongue depressors tongue depressors per se A61B13/00; Instruments for opening or keeping open the mouth combined with saliva removers A61C17/00; mouth openers for animals A61D15/00

Abstract

An image picking-up and processing apparatus particularly suitable for use in dental treatment comprises a transmission and conversion section including an image sensor for detecting input light from an object, an objective lens, and a light guide for transmitting illumination light; a control section including a control unit for producing an image signal on the basis of an output signal from the image sensor, and a light source for emitting the illumination light; and an interchangeable image processing section detachably connected to the transmission and conversion section for processing the image signal to reproduce image information in a desired form. An interchangeable image picking-up section, for example, an endoscope including an objective lens, an image fiber for transmitting the input light, and a light guide for transmitting the illumination light is detachably connected to the transmission and conversion section.

Claims

1. An image picking-up and processing apparatus, comprising:

a transmission and conversion section comprising an image sensor for detecting input light which carries first image information of an object, a first objective lens for focusing said input light on said image sensor, and a first light guide for transmitting illumination light to illuminate said object, a front end portion of said transmission and conversion section having a structure enabling detachable connection to an interchangeable image picking-up section;

a control section comprising a control unit for controlling said image sensor, and producing an image signal on the basis of an output signal from said image sensor, a light source for emitting said illumination light, and a second light guide for transmitting said illumination light from said light source to said first light guide; and

an interchangeable image processing section for processing said image signal to reproduce second image information in a desired form, said image processing section being detachably connected to said control section.

2. An image picking-up and processing apparatus as claimed in claim 1, wherein said apparatus can detect said input light and reproduce said second image information without connecting said image picking-up section to said transmission and conversion section.

3. An image picking-up and processing apparatus as claimed in claim 1, further comprising as said image picking-up section a protection adaptor for protecting a mechanism inside said transmission and conversion section at least from water and tooth shavings which occur in a dental treatment.

4. An image picking-up and processing apparatus as claimed in claim 1, further comprising as said image picking-up section a film adaptor for holding a film such that an image of said film is focused on said image sensor when said film is illuminated by an external light source.

5. An image picking-up and processing apparatus as claimed in claim 1, further comprising as said image picking-up section a zooming mechanism adaptor including a lens system capable of performing zooming operation with respect to said object.

6. An image picking-up and processing apparatus as claimed in claim 1, wherein said transmission and conversion section further comprises a mechanism for moving said first objective lens along an optical axis thereof with respect to said image sensor.

7. An image picking-up and processing apparatus as claimed in claim 1, wherein said first light guide in said transmission and conversion section has a plurality of front ends to emit said illumination light.

8. An image picking-up and processing apparatus as claimed in claim 1, further comprising as said image picking-up section an endoscope for pickingup said first image information from an oral cavity or a root canal.

9. An image picking-up and processing apparatus as claimed in claim 8, wherein said endoscope comprises an image transmission member for transmitting said input light to said transmission and conversion section, a second objective lens for focusing an image of said object on a front end surface of said image transmission member, and a third light guide for transmitting said illumination light from said first light guide to illuminate said object.

10. An image picking-up and processing apparatus as claimed in claim 9, wherein said third light guide has a front end consisting of a bundle of optical fibers disposed so as to surround said second objective lens.

11. An image picking-up and processing apparatus as claimed in claim 9, wherein said image transmission member is an image fiber.

12. An image picking-up and processing apparatus as claimed in claim 9, wherein said image transmission member is a rod lens.

13. An image picking-up and processing apparatus as claimed in claim 9, wherein said endoscope further comprises an optical-path changing member disposed in front of said second objective lens for changing a traveling path of said input light reflected from said object, and said third light guide is protruded and bent to a direction consistent with said traveling path of said input light before incidence on said optical-path changing member.

14. An image picking-up and processing apparatus as claimed in claim 9, wherein said second objective lens is a fisheye lens.

15. An image picking-up and processing apparatus as claimed in claim 9, wherein a probe enclosing said image transmission member is bent by a specific angle from an optical axis of said endoscope.

16. An image picking-up and processing apparatus as claimed in claim 9, wherein a probe enclosing said image transmission member is flexible.

17. An image picking-up and processing apparatus as claimed in claim 9, wherein said endoscope further comprises a guide lens disposed in the rear of said image transmission member for focusing, in association with said first objective lens, said input light emitted from said image transmission member on said image sensor.

18. An image picking-up and processing apparatus as claimed in claim 17, wherein said endoscope further comprises a structure for holding said guide lens such that an optical axis of said guide lens can be adjusted so as to coincide with an optical axis of said first objective lens.

19. An image picking-up and processing apparatus as claimed in claim 9, wherein said endoscope further comprises an optical-path changing member disposed in front of said second objective lens for changing traveling paths of said illumination light and said input light reflected from said object.

20. An image picking-up and processing apparatus as claimed in claim 19, wherein said optical-path changing member changes said traveling paths two times.