JPH1184263A5

JPH1184263A5 -

Info

Publication number: JPH1184263A5
Application number: JP1997241203A
Authority: JP
Filing date: 1997-09-05
Publication date: 2004-10-21

Description

【００１１】
又、本発明は、立体視顕微鏡の観察光学系の光路から光路分割器で分岐された光路上に配置された立体視顕微鏡の撮影光学系において、前記観察光学系からの光束を結像させる結像レンズ，光路切換え部材，スチルカメラに結像させるリレー光学系，及びＴＶカメラに結像させるリレー光学系を備え、特に前記スチルカメラに結像させるリレー光学系の結像倍率を１乃至７倍にしたことを特徴とする。
又、本発明は、前記立体視顕微鏡の観察光学系からの光束を結像させる結像レンズにより形成される中間像の位置にレンズが配置されていることを特徴とする。
又、本発明は、前記立体視顕微鏡の観察光学系からの光束を結像させる結像レンズのＦナンバーを Fno _- k 、前記中間像位置に配置されたレンズの厚みをｔとしたとき、以下の条件式を満足するようにしたことを特徴とする。
0.3 ＜ Fno _- k/t ＜ 7.5
更に、本発明は、前記スチルカメラに結像させるリレー光学系は、前記立体視顕微鏡の観察光学系側から順に、正の焦点距離を備えた第１レンズ群と負の焦点距離を備えた第２レンズ群とが配置されてなる２群構成であり、各々のレンズ群中には少なくとも１つの接合レンズが含まれていることを特徴とする。 [0011]
Furthermore , the present invention is characterized in that the photographing optical system of a stereoscopic microscope is arranged on an optical path branched off from the optical path of the observation optical system of the stereoscopic microscope by an optical path splitter, and is provided with an imaging lens that forms an image of the light beam from the observation optical system, an optical path switching member, a relay optical system that forms an image on a still camera, and a relay optical system that forms an image on a TV camera, and in particular the imaging magnification of the relay optical system that forms an image on the still camera is set to 1 to 7 times.
The present invention is also characterized in that a lens is disposed at the position of an intermediate image formed by an imaging lens that forms an image from a light beam from the observation optical system of the stereoscopic microscope.
Furthermore, the present invention is characterized in that the following conditional expression is satisfied when the F-number of the imaging lens that forms an image from the light beam from the observation optical system of the stereoscopic microscope is Fno _- k and the thickness of the lens placed at the intermediate image position is t:
0.3 ＜ Fno _- k/t ＜ 7.5
Furthermore, the present invention is characterized in that the relay optical system that forms an image on the still camera has a two-group structure consisting of, in order from the observation optical system side of the stereoscopic microscope, a first lens group with a positive focal length and a second lens group with a negative focal length, and each lens group includes at least one cemented lens.

Claims

A photographing optical system for a stereoscopic microscope, characterized in that a reflective member is arranged to refract the incident optical axis within a plane of ±20° based on a plane whose normal is the incident optical axis to the photographing optical system.

A photographing optical system for a stereoscopic microscope is arranged on an optical path branched by an optical path splitter from an optical path of an observation optical system of the stereoscopic microscope, and comprises an optical path switching member, an optical system for a still camera, and an optical system for a TV camera, and is capable of switching and guiding the optical path from the observation optical system to the optical system for a still camera or the optical system for a TV camera by the optical path switching member,
The photographic optical system is characterized in that at least one of the optical paths of the optical system for a still camera or the optical system for a TV camera has at least three reflecting members within a plane of ±20° with respect to a plane whose normal is the incident optical axis to the photographic optical system, and the optical path switching member is arranged within this plane.

In a photographing optical system of a stereoscopic microscope, the photographing optical system is arranged on an optical path branched by an optical path splitter from the optical path of the observation optical system of the stereoscopic microscope,
A photographing optical system comprising an imaging lens for forming an image of a light beam from the observation optical system, an optical path switching member, a relay optical system for forming an image on a still camera, and a relay optical system for forming an image on a TV camera, wherein the imaging magnification of the relay optical system for forming an image on the still camera is set to 1 to 7 times.

4. The photographing optical system of a stereoscopic microscope according to claim 3, wherein a lens is disposed at a position of an intermediate image formed by an imaging lens that forms an image of the light beam from the observation optical system of the stereoscopic microscope.

The F-number of the imaging lens that forms an image of the light beam from the observation optical system of the stereoscopic microscope is Fno _-- k 5. The photographing optical system of a stereoscopic microscope according to claim 4, wherein the following condition is satisfied when the thickness of the lens disposed at the intermediate image position is t:
0.3 < Fno _-- k/t < 7.5

The stereoscopic microscope imaging optical system described in claim 5, characterized in that the relay optical system that forms an image on the still camera has a two-group structure consisting of, in order from the observation optical system side of the stereoscopic microscope, a first lens group with a positive focal length and a second lens group with a negative focal length, and each lens group includes at least one cemented lens.