CN109324359A - An aspheric glass rod mirror for rigid tube endoscope - Google Patents

Abstract

The invention discloses an aspherical glass rod mirror for a rigid tube endoscope. The optical elements constituting the glass material aspherical rod mirror of the rigid tube endoscope are respectively processed by using the existing optical manufacturing process, and then each part of the optical element is formed by a gluing method. Partial combination, so as to realize the manufacture of hard tube endoscope glass material aspherical rod mirror, so that the aspheric surface shape can be applied in the hard tube endoscope glass material rod mirror element, the imaging of the optical system is significantly improved, and the manufacturing cost is greatly reduced. , and can realize high-temperature and high-pressure sterilization of the rigid tube endoscope which can use the rod lens element and all other optical elements are made of glass.

Description

A kind of aspherical glass stick mirror for rigid pipe endoscope

Technical field

The present invention relates to optics manufacture and medical instrument fields, are related to a kind of aspherical glass stick for rigid pipe endoscope Mirror.

Background technique

Rigid pipe endoscope is a kind of common optical instrument, it has intuitive, easy to operate, achievable autoclave sterilization Many advantages, such as.Promote the target that image quality is the development of its technical field.

The main method of improving optical system imaging quality is to improve system by the face shape of optimization lens in the design phase Image quality.The primary solutions for promoting image quality are had become using non-spherical element building optical system, for rigid pipe endoscope For, image quality acquisition can be made to mention to the greatest extent using non-spherical element building objective system, stick mirror system and eyepiece system It rises.For the element of constituent objective lens and eyepiece system, bigger, the method that die casting can be used of diameter and thickness Make non-spherical element；And the diameter and thickness of stick mirror is smaller, existing method can only be realized in optical plastic material table Face directly processes aspheric surface, cannot achieve direct processing for optical glass material, to make the aspherical stick of glass material Application of the mirror in rigid pipe endoscope optical system is greatly limited.Therefore, not yet occurs glass material aspheric at present Face stick mirror element.

Summary of the invention

The present invention includes a kind of aspherical glass stick mirror for rigid pipe endoscope.Wherein, the aspherical stick mirror of glass material Element is made of two one integrals and an optional part: glass bar mirror substrate, glass aspheric lenses and glass spherical surface are saturating Mirror；Wherein, glass bar mirror substrate and glass aspheric lenses are the one integral for constituting the aspherical stick mirror element of glass material, when When image quality is met the requirements, this two parts is selected to constitute aspherical stick mirror element；Glass spherical lens is optional part, When image quality, which is unable to satisfy, to be required, it is made up of in hard tube and peeps addition glass spherical lens on the basis of above-mentioned two-part The aspherical stick mirror of looking glass material can further improving optical system image quality.

The process of manufacture is as follows: 1. process composition rigid pipe endoscope glass material by existing Optical element manufacturing technique respectively Each part of the aspherical stick mirror of matter；2. each section group is combined into an optical element using glued mode.

The form of the glass bar mirror substrate is that the light passing surface applied in existing rigid pipe endoscope optical system is spherical surface Or the stick mirror of plane surface shape；

One of light passing surface of the glass aspheric lenses is aspheric surface；

Two light passing surfaces of the glass spherical lens are plane or spherical surface shape.

Preferably, high throwing machine or classic grinding and polishing method can be used to process glass bar mirror substrate；

It is processed preferably, die casting can be used for glass aspheric lenses；

Preferably, the method that die casting or classic grinding and polishing can be used for glass spherical lens is processed；

Preferably, the glass bar mirror substrate number for including in the aspherical stick mirror element of a rigid pipe endoscope glass material is 1, packet The glass aspheric lenses number contained is 1 or 2, and the glass spherical surface number of lenses range for including represents in optical system for 0 to 4,0 Without glass spherical lens, the specific value and combination of above-mentioned three parts require to carry out Optical System Design according to image quality After determine；

Preferably, in the aspherical stick mirror element of rigid pipe endoscope glass material, it is any to carry out two glued optical element tables Face is plane or spherical surface shape；

Preferably, the centering link in gluing procedures, usable centrescope are felt relieved, for the optical element of same diameter Also it can be realized and be felt relieved using radial constraint by production internal diameter tool structure identical with optical element diameter.

The invention has the following beneficial effects:

The present invention realizes the aspherical stick mirror of glass material by the scheme of glass bar mirror substrate and glass aspheric lenses gluing Manufacture, by the aspherical stick mirror of glass material be applied to rigid pipe endoscope optical system in, so that image quality is significantly improved, Manufacturing cost is greatly reduced, while can make using in the stick mirror element and the hard tube of all glass materials of remaining optical element Sight glass realizes autoclave sterilization.

Detailed description of the invention

Fig. 1 is the rigid pipe endoscope glass that the present invention is made of glass bar mirror substrate and aspherical glass lens two parts The structural schematic diagram of the aspherical stick mirror of material, wherein glass bar mirror substrate number is 1, and aspherical glass number of lenses is 2.

It is hard that Fig. 2 is that the present invention is made of glass bar mirror substrate, aspherical glass lens with spherical glass lens three parts The structural schematic diagram of the aspherical stick mirror of pipe endoscope glass material, wherein glass bar mirror truth of a matter mesh is 1, aspherical glass number of lenses Mesh is 2, and spherical glass lens number is 2.

1- glass bar mirror substrate, 2- glass aspheric lenses, 3- glass spherical lens.

Specific embodiment

The present invention will now be described in detail with reference to the accompanying drawings and examples.

1. the manufacturing method of glass bar mirror substrate: high throwing machine can be used to process glass bar mirror substrate 1, or classic The processing of grinding and polishing method.

2. the manufacturing method of glass aspheric lenses: for glass aspheric lenses 2 can be used the method for die casting into Row processing.

3. the manufacturing method of glass spherical lens: the method that die casting can be used for glass spherical lens 3 adds The method processing of classic grinding and polishing can also be used in work.

4. the manufacturing method of the aspherical stick mirror of glass material: according to optical system structure drawing requirement, by glass bar mirror base Bottom 1, glass aspheric lenses 2 and glass spherical lens 3(if there is) carry out it is glued, in gluing procedures, all elements To use centrescope to realize centering, wherein optical element identical for diameter, can also make an internal diameter and element diameter phase Same tool structure passes through and applies radial constraint realization cemented component centering.

In conclusion the above is merely preferred embodiments of the present invention, being not intended to limit the scope of the present invention. All within the spirits and principles of the present invention, any modification, equivalent replacement, improvement and so on should be included in of the invention Within protection scope.

Claims (9)

1. an aspherical glass rod mirror for hard tube endoscope, it is characterized in that, described hard tube endoscope glass material aspherical rod mirror has two kinds of constitution modes: 1. by glass rod mirror base and glass aspheric surface The lens is composed of two parts; 2. It is composed of three parts: a glass rod mirror base, a glass aspheric lens and a glass spherical lens. 2 . The aspheric glass rod mirror for rigid tube endoscope according to claim 1 , wherein the glass rod mirror substrate can be processed by a high polishing machine or a classical grinding and polishing method. 3 . 3 . The aspheric glass rod lens for a rigid tube endoscope according to claim 1 , wherein the glass aspheric lens can be processed by die casting. 4 . 4 . The aspheric glass rod lens for hard tube endoscope according to claim 1 , wherein the glass spherical lens can be processed by die casting or classical polishing. 5 . 5 . The aspheric glass rod lens for a rigid tube endoscope according to claim 1 , wherein the base of the glass rod lens is in the form of a clear light used in an existing rigid tube endoscope optical system. 6 . A rod lens whose surface is spherical or plane; one of the light-transmitting surfaces of the glass aspherical lens is aspherical; the two light-transmitting surfaces of the glass spherical lens are plane or spherical. 6. An aspherical glass rod lens for a rigid tube endoscope, characterized in that the manufacturing process comprises the following processes: 1. The glass material aspherical rod lens of the rigid tube endoscope is processed by existing optical element manufacturing equipment respectively. Each part (three parts of glass rod lens base, glass aspheric lens and glass spherical lens, or two parts of glass rod lens base and glass aspheric lens); 2. Each part (glass rod lens base, glass aspheric lens, etc.) The glass aspheric lens and the three parts of the glass spherical lens, or the glass rod lens base and the two parts of the glass aspheric lens) are combined into a rod lens optical element. 7 . The aspherical glass rod lens for a rigid endoscope according to claim 6 , wherein, in the aspherical rod lens element made of glass material for the rigid endoscope, any two optical rod lenses that are glued together The element surface is flat or spherical. 8. The aspheric glass rod lens for rigid tube endoscope according to claim 6, characterized in that, in the centering link in the gluing process, a centering instrument can be used for centering, and for optical fibers of the same diameter Components can also be centered by applying radial constraints by making a tooling structure with the same inner diameter as the optical component. 9 . The aspheric glass rod lens for a rigid endoscope according to claim 6 , wherein the number of glass rod lens substrates contained in a rigid endoscope glass material aspheric rod lens element is 1. 10 . , the number of glass aspherical lenses included is 1 or 2, the number of glass spherical lenses included ranges from 0 to 4, and 0 represents no glass spherical lens in the optical system.