Aspheric lens component

Abstract

The invention discloses an aspheric lens component comprising an outer lens cone, an inner lens cone fixed in the outer lens cone and an aspheric lens fixed in the inner lens cone; the outer lens cone has a round platform-shaped structure, an inner part of the outer lens cone is provided with a first accommodating cavity used for accommodating the inner lens cone, an inner wall of the first accommodating cavity is provided with a ring-shaped glue spilling groove, the outer lens cone is made of stainless steel, a surface of the inner lens cone made of stainless steel is plated with gold, the outer lens cone and the inner lens cone are glued together via a glue smearing mode, the inner lens cone is shaped like a cylinder, an inner part of the inner lens cone is provided with a second accommodating cavity used for accommodating the aspheric lens made of glass, and the aspheric lens is fixed on the inner lens cone via a pressure casting mode. The aspheric lens component can help improve gluing firmness via use of an inner lens cone and aspheric lens pressure casting method, eccentric tolerance is reduced, air-tightness can be ensured, evolution reaction can be prevented after the inner lens cone is plated with gold, the outer lens cone and the inner lens cone are glued via the glue smearing mode, and excellent welding performance of the outer lens cone can be maintained.

Description

technical field [0001] The invention relates to the field of optics, in particular to an aspherical lens assembly. Background technique [0002] In the optical communication industry, due to welding requirements, conventional glass lenses cannot be directly welded into the entire optical system, and usually use a metal lens barrel for welding. The traditional way of assembling the lens barrel and the lens is generally divided into two types: one is to use glue to bond the lens and the lens barrel, but due to the two different material properties of metal and glass, the lens after dispensing and bonding The bonding force between the lens barrel and the lens barrel cannot reach a very ideal state, resulting in the phenomenon that the lens is prone to fall off when used in some harsh environments. At the same time, there is still a little gap between the lens and the lens barrel bonded by dispensing , is a gap fit, which leads to an increase in the eccentricity tolerance of th...

AI Technical Summary

Problems solved by technology

The traditional way of assembling the lens barrel and the lens is generally divided into two types: one is to use glue to bond the lens and the lens barrel, but due to the two different material properties of metal and glass, the lens after dispensing and bonding The bonding force between the lens barrel and the lens barrel cannot reach a very ideal state, resulting in the phenomenon that the lens is prone to fall off when used in some harsh environments. At the same time, there is still a little gap between the lens and the lens barrel bonded by dispensing , which is a gap fit, which leads to an increase in the eccentricity tolerance of the overall optical path. At the same time, due to the existence of the gap, it cannot be applied to some products that have special requirements for air tightness.

The second assembly method is to fix the lens in the lens barrel by using mechanical positioning methods such as pressure rings, pressure rings, etc., but this method also has the problem of not being able to control the airtightness, and the pressure rings and pressure rings will be damaged after a long time of use. There may be a risk of deformation, causing the lens to be decentered in the lens barrel, affecting the quality of the entire optical path system

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