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Stereo endoscope optical system

A stereoscopic endoscope and optical system technology, applied in the optical field, can solve the problems of cumbersome and complex structure, and achieve the effects of simplifying the mechanical structure, small size and reducing weight

Pending Publication Date: 2018-06-01
SHANDONG WEIGAO SURGICAL ROBOT CO LTD +1
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

However, although its imaging doublet lens group, single lens and protective window can also be used to magnify the image, participate in the correction of system distortion, and reduce the system distortion, but its structure is not only complicated, but the front and rear of the doublet lens must also use plane windows. Sealed and waterproof
In addition, the two rhombic prisms are set separately and need to be adjusted separately during use, which is very cumbersome

Method used

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  • Stereo endoscope optical system
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Embodiment 1

[0040]

[0041]

[0042] In Table 1, the first surface is the intermediate image surface formed by the image of the objective lens through several sets of 4f image conversion systems; the second to third surfaces are the optical structure parameters of the eyepiece rod lens, the spherical radius is 18.5, the thickness is 46.15, and the material is H -K9L, focal length f R = 31.26. The 4th to 6th surfaces are double-glued eyepiece power-enhancing lenses. The spherical radius of the first surface is -50mm, the spherical radius of the cemented surface is 7.5mm, and the spherical radius of the last surface is -18.5mm. The glass materials are STIH4-OHARA and H-LaK1 respectively. , two spherical lenses are glued together with high temperature resistant ultraviolet photosensitive adhesive, focal length f a =88.3mm. The thickness of the glass between the 7th and 8th planes is 21 mm, which is the equivalent thickness of the protective glass 5 shared by the left and right optica...

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Abstract

The present invention relates to the optical field, in particular to the stereo endoscope optical system design used for a surgical robot. A stereo endoscope optical system is characterized by being equipped with a left optical system and a right optical system, wherein each of the left and right optical systems is equipped with, orderly along a light ray propagation direction, an objective lens,three sets of 4f relay systems, a class eyepiece rod-like lens, a dual-gluing eyepiece focal power enhancing lens having a positive beam angle, a rhombic prism, a protection glass, a four-gluing interface lens and a CCD or CMOS camera, and wherein the left and right optical systems are equipped with a protection glass sharing by the left and right light paths, the left and right rhombic prisms areboth glued with the protection glass, and the four-gluing interface lens is equipped with, orderly from the left to right, a first biconvex lens, a first biconcave lens, a second biconvex lens and aconcave-convex lens which are glued and of which the calibers are same. By the above structures, the stereo endoscope optical system of the present invention has the advantages of simplifying the structure, being long in working length, small in size and light in weight, etc.

Description

technical field [0001] The invention relates to the field of optics, in particular to the design of a three-dimensional endoscope optical system for a surgical robot. Background technique [0002] With the continuous advancement of science and technology, robots have entered the operating table. Replacing doctors with surgical robots can make the operation more delicate and the wound smaller. [0003] For a surgical robot to exert its precise positioning accuracy, it is inseparable from its eyes—stereoscopic endoscopes. There are two types of stereoscopic endoscopes: electronic stereoscopic endoscopes and optical stereoscopic endoscopes. The former objective lens and CCD are integrated together, which is small in size but low in resolution; the latter has 3 to 5 groups of 4f optical relays behind the objective lens A system for increasing the working length of a stereoscopic endoscope with a high resolution but a large volume. [0004] Minimally invasive surgery has become...

Claims

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Application Information

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IPC IPC(8): G02B23/24G02B7/18G02B7/02G03B30/00
CPCG02B7/025G02B7/1805G02B23/2415G02B23/243G02B23/2446G02B23/2453
Inventor 王炳强王俊茹康伟伟苏赫李建民王树新
Owner SHANDONG WEIGAO SURGICAL ROBOT CO LTD