CN2755634Y

CN2755634Y - Lens

Info

Publication number: CN2755634Y
Application number: CN200420086566.2U
Authority: CN
Inventors: 李立英; 袁艳; 熊望娥
Original assignee: XiAn Institute of Optics and Precision Mechanics of CAS
Current assignee: XiAn Institute of Optics and Precision Mechanics of CAS
Priority date: 2004-12-31
Filing date: 2004-12-31
Publication date: 2006-02-01
Anticipated expiration: 2014-12-31

Abstract

The utility model relates to an optical lens with a glue injection groove. It includes a frame 2 and a lens 3. The lens 3 is arranged in the frame 2. The frame 2 is evenly distributed with T-shaped glue injection grooves 5 in the axial and radial sections. The through hole has an arcuate groove on the surface of the inner cavity to communicate with the through hole to form a glue injection groove 5. The utility model solves the technical problems of uneven stress and unstable image quality in the lens glass of the optical lens with a glue injection groove in the background technology due to uneven glue injection.

Description

a lens

一、技术领域1. Technical field

本实用新型涉及一种镜头，尤其是一种带有注胶槽的光学镜头。The utility model relates to a lens, in particular to an optical lens with a glue injection groove.

二、背景技术2. Background technology

特殊环境中使用的镜头，在轴向固定的同时，径向需要采用注胶辅助固定。目前的采用灌胶的镜头通常其注胶槽的形式为圆周方向通槽或径向上开孔。当胶槽形为通槽时，注入的胶流动无法控制，会造成胶层厚薄不均，胶凝固后粘接面大小不均，分布不匀，这样对镜片(或内镜框)周边支撑力不平衡，在特殊震动及温度场下造成光轴偏离，系统同轴度下降，导致像质变差；当边厚较薄的镜片在镜框内固定时，会因为定位面太窄而使镜片径向定位不可靠，造成玻璃崩边，导致系统实效。而在径向圆周上开注胶孔，孔的大小受玻璃边厚的限制，胶点太小，对玻璃的支撑力太小，镜片的径向固定不可靠。Lenses used in special environments need to be fixed by glue injection in the radial direction while being fixed in the axial direction. The current glue-filled lenses usually have glue injection grooves in the form of circumferential through grooves or radial holes. When the shape of the glue groove is a through groove, the flow of the injected glue cannot be controlled, which will cause uneven thickness of the glue layer, uneven size and uneven distribution of the bonding surface after the glue solidifies, which will not support the surrounding of the lens (or inner frame) Balanced, the optical axis deviates from the special vibration and temperature field, and the coaxiality of the system decreases, resulting in poor image quality; when the lens with a thinner side is fixed in the frame, the lens will be radially positioned because the positioning surface is too narrow Unreliable, resulting in glass edge collapse, leading to system effectiveness. However, if the glue injection hole is opened on the radial circumference, the size of the hole is limited by the thickness of the glass side. If the glue point is too small, the supporting force to the glass is too small, and the radial fixation of the lens is unreliable.

三、实用新型内容3. Contents of utility model

本实用新型解决了背景技术中带有注胶槽的光学镜头存在的镜头玻璃因注胶不均而产生的应力不均且像质不稳定的技术问题。The utility model solves the technical problems of uneven stress and unstable image quality in the lens glass of the optical lens with a glue injection groove in the background technology due to uneven glue injection.

本实用新型的技术解决方案是：本实用新型包括镜框2和镜片3，镜片3设置在镜框2内，其特殊之处在于：所述镜框2在轴向及径向截面均匀分布设置有呈T形的注胶槽5。The technical solution of the utility model is: the utility model includes a picture frame 2 and a lens 3, and the lens 3 is arranged in the picture frame 2. Shaped glue injection groove 5.

上述镜框2在径向壁厚处开有均布的通孔，在内腔表面开有弓形凹槽与通孔贯通，构成注胶槽5。The above-mentioned frame 2 is provided with evenly distributed through holes in the radial wall thickness, and arcuate grooves are opened on the surface of the inner cavity to communicate with the through holes to form a glue injection groove 5 .

上述注胶槽5在轴向上的宽度比镜片3边厚窄。The width of the above-mentioned glue injection groove 5 in the axial direction is narrower than the side thickness of the lens 3 .

上述镜框2内还设置有内镜框1，所述镜片3设置在内镜框1内。An inner mirror frame 1 is also arranged in the above mirror frame 2 , and the lens 3 is arranged in the inner mirror frame 1 .

上述内镜框1在轴向及径向截面均匀分布设置有呈T形的注胶槽4。The above-mentioned inner lens frame 1 is provided with T-shaped glue injection grooves 4 evenly distributed in the axial and radial sections.

上述内镜框1在径向壁厚处开有通孔，在靠近玻璃边厚的内镜框1的内表面开有弓形凹槽与通孔贯通，构成注胶槽4。The above-mentioned inner mirror frame 1 has a through hole in the radial wall thickness, and an arcuate groove is opened on the inner surface of the inner mirror frame 1 close to the glass edge thickness to communicate with the through hole to form a glue injection groove 4 .

上述注胶槽4在轴向上的宽度比镜片3边厚窄。The width of the above-mentioned glue injection groove 4 in the axial direction is narrower than the side thickness of the lens 3 .

上述注胶槽5在轴向上的宽度比内镜框1外圆面窄。The width of the above-mentioned glue injection groove 5 in the axial direction is narrower than that of the outer circle of the inner lens frame 1 .

本实用新型通过改变注胶槽的结构形式，根据实际间隔情况在镜框上加工出T形注胶槽，在将镜片轴向固定好后，对称逐一向T形槽内注胶，实现镜片在径向的分布均匀的弹性固定。因此本实用新型使径向弹性固定的胶量可控，粘接面积大小一致，使注胶过程中产生的应力分布均匀，保证了像质的稳定。The utility model processes T-shaped glue-injection grooves on the frame according to the actual interval by changing the structure of the glue-injection grooves. Uniformly distributed elastic fixation. Therefore, the utility model makes the radially elastically fixed glue amount controllable, the size of the bonding area is consistent, the stress generated in the glue injection process is distributed evenly, and the image quality is guaranteed to be stable.

四、附图说明4. Description of drawings

附图为本实用新型的结构示意图。Accompanying drawing is the structural representation of the utility model.

五、具体实施方式5. Specific implementation

本实用新型的结构主要分为两种形式，一种为直接由带有注胶槽5的镜框2和镜片3组成，另一种为带有注胶槽5的镜框2、带注胶槽4的内镜框1和镜片3组成。第一种结构镜片3直接设置在镜框2内，镜框2在径向壁厚处开有均布的通孔，在内腔表面开有弓形凹槽与通孔贯通，构成注胶槽5，注胶槽5在轴向上的宽度比镜片3边厚窄。The structure of the utility model is mainly divided into two forms, one is directly composed of the picture frame 2 and the lens 3 with the glue injection groove 5, and the other is the picture frame 2 with the glue injection groove 5 and the lens 4 with the glue injection groove. The inner spectacle frame 1 and lens 3 are formed. The lens 3 of the first type of structure is directly arranged in the picture frame 2, and the picture frame 2 has uniformly distributed through holes in the radial wall thickness, and has an arcuate groove on the surface of the inner cavity to communicate with the through holes to form a glue injection groove 5. The width of the glue groove 5 in the axial direction is thicker and narrower than that of the glasses 3 sides.

参见附图，本实用新型的第二种结构为镜框2内设置有内镜框1，镜片3设置在内镜框1内，面均匀分布设置有呈T形的注胶槽4。镜框2在径向壁厚处开有均布的通孔，在内腔表面开有弓形凹槽与通孔贯通，构成注胶槽5，内镜框1在径向壁厚处开有通孔，在靠近玻璃边厚的内镜框1的内表面开有弓形凹槽与通孔贯通，构成注胶槽4，注胶槽4在轴向上的宽度比镜片3边厚窄，注胶槽5在轴向上的宽度比内镜框1外圆面窄。Referring to the accompanying drawings, the second structure of the present utility model is that an inner mirror frame 1 is arranged in the mirror frame 2, the lens 3 is arranged in the inner mirror frame 1, and T-shaped glue injection grooves 4 are evenly distributed on the surface. The mirror frame 2 has uniformly distributed through holes at the radial wall thickness, and an arcuate groove is opened on the surface of the inner cavity to communicate with the through holes to form a glue injection groove 5. The inner mirror frame 1 has through holes at the radial wall thickness. On the inner surface of the inner mirror frame 1 close to the thickness of the glass side, there is an arcuate groove connected with the through hole to form a glue injection groove 4. The width of the glue injection groove 4 in the axial direction is narrower than that of the lens 3. The glue injection groove 5 is in the The width in the axial direction is narrower than the outer circle of the inner lens frame 1 .

注胶时，将镜片3在内镜框1轴向固定好后，对称逐一向注胶槽4内注胶，实现镜片3在内镜框1内径向的分布均匀的弹性固定，然后在内镜框1与镜框2之间做完径向调整及轴向压紧后，对称逐一向注胶槽5内注胶，实现内镜框1在镜框2内径向的分布均匀的弹性固定。When injecting glue, after the lens 3 is axially fixed on the inner mirror frame 1, inject glue into the glue injection groove 4 symmetrically one by one, so as to realize the elastic fixation of the lens 3 evenly distributed in the inner radial direction of the inner mirror frame 1, and then the inner mirror frame 1 and the inner mirror frame 1 After the radial adjustment and axial compression between the frames 2 are completed, glue is injected symmetrically into the glue injection groove 5 one by one to realize elastic fixation of the inner frame 1 in the radial direction of the frame 2 with uniform distribution.

Claims

1. A lens, comprising a frame 2 and a lens 3, the lens 3 is arranged in the frame 2, characterized in that: the frame 2 is evenly distributed with T-shaped glue injection grooves 5 in the axial and radial sections .

2. The lens according to claim 1, characterized in that: said frame 2 is provided with evenly distributed through holes at the radial wall thickness, and arcuate grooves are opened on the surface of the inner cavity to communicate with the through holes, forming a glue injection Slot 5.

3. The lens according to claim 2, characterized in that: the width of the glue injection groove 5 in the axial direction is narrower than the side thickness of the lens 3 .

4. The lens according to claim 1, 2 or 3, characterized in that: an inner mirror frame 1 is arranged in the mirror frame 2, and the lens 3 is arranged in the inner mirror frame 1.

5. The lens according to claim 4, characterized in that: said inner lens frame 1 is provided with T-shaped glue injection grooves 4 evenly distributed in the axial and radial sections.

6. The lens according to claim 5, characterized in that: the inner mirror frame 1 has a through hole at the radial wall thickness, and an arcuate groove and a through hole are opened on the inner surface of the inner mirror frame 1 close to the glass edge thickness. The hole runs through to form the glue injection groove 4.

7. The lens according to claim 6, characterized in that the width of the glue injection groove 4 in the axial direction is narrower than the side thickness of the lens 3 .

8 . The lens according to claim 7 , wherein the width of the injection groove 5 in the axial direction is narrower than the outer surface of the inner lens frame 1 .