Operating microscope

• US 6,266,182 B1
• Filed: 02/29/2000
• Issued: 07/24/2001
• Est. Priority Date: 04/03/1997
• Status: Expired due to Term

• Current Assignee: Olympus Optical Company Ltd. (Olympus Corporation)
• Original Assignee: Olympus Optical Company Ltd. (Olympus Corporation)
• Inventors: Morita, Kazuo
• Primary Examiner(s): NGUYEN, THONG Q
• Application Number:
  US09/516,383
• Time in Patent Office: 511 Days
• Field of Search: 359/362-363, 359/368-369, 359/372-375, 359/380-383, 359/618, 359/629-630, 351/205-208, 600/166, 600/398, 606/3-4, 606/11, 606/18
• US Class Current: 359/383
• CPC Class Codes: A61B 90/20 Surgical microscopes characterised by non-optical aspects
• CPC Class Codes: G02B 21/0012 Surgical microscopes counterbalanced structures for surgical microscopes G02B7/001
• CPC Class Codes: G02B 21/18 Arrangements with more than one light path, e.g. for comparing two specimens

Abstract

An operating microscope having an image projecting optical system (9) for introducing an image derived from an endoscopic optical system, which is provided separate from an operating-microscopic optical system, into an eyepiece optical system (18) of the operating microscope so that the operating-microscopic image and the endoscopic image can be simultaneously observed. The image projecting optical system (9) includes a collimating optical system (10), which collimates a beam of rays emergent from the image derived from the endoscopic optical system, and an imaging optical system (13), which forms an image on an image surface of the operating-microscopic optical system provided for observation via eyepiece using the beam of parallel rays emergent from the collimating optical system (10). The imaging optical system (13) is constructed to be movable at least in such a range that its entrance aperture can receive the beam of parallel rays. Whereby, the operating-microscopic image and the endoscopic images are simultaneously observed via the eyepiece optical system (18) of the operating microscope irrespective of adjustment of interpupillary distance, and the operating microscope is constructed to be compact and highly operable.

Claims

1. An operating microscope comprising:

an eyepiece optical system constructed to be movable for adjustment of interpupillary distance; and

an image projecting optical system for introducing an electronic image into said eyepiece optical system so that an operating-microscopic image and said electronic image are simultaneously observed,

wherein a part of said image projecting optical system is constructed to be movable in such a range as allows an entrance aperture thereof to receive a beam of rays from said electronic image so that the beam of rays is always introduced into said eyepiece optical system, which is movable for adjustment of interpupillary distance.

2. An operating microscope according to claim 1, wherein a defocus amount of an image projected by said projecting optical system in reference to an image surface provided for observation via said eyepiece optical system, which defocus amount varies with a movement of said part of said image projecting optical system, satisfies the condition:

3. An operating microscope comprising:

an eyepiece optical system; and

an image projecting optical system for projecting an image derived from an endoscopic optical system, which is provided separate from an operating-microscopic optical system, into said eyepiece optical system so that an image from said operating-microscopic optical system and the image from said endoscopic optical system are simultaneously observed,

wherein a part of said image projecting optical system is constructed to be movable in such a range as allows an entrance aperture thereof to receive a beam of rays; and

wherein a defocus amount of the projected image in reference to an image surface provided for observation via said eyepiece optical system, which defocus amount varies with a movement of said part of said image projecting optical system, satisfies the condition;