Device and method for realizing automatic control of optical lens injection molding

A technology of optical lenses and lenses, applied to optical components, other household appliances, household appliances, etc., to achieve the effect of high reliability and stability, and simple installation

Inactive Publication Date: 2017-05-31
HANGZHOU DIANZI UNIV
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

Aiming at the deficiency that the existing optical resin lens injection molding process requires manual judgment, the present invention proposes a method for automatically detecting whether the glue is injected to the set height by using the principle of total internal reflection of light, which has the advantages of simple device, high reliability and stability specialty

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  • Device and method for realizing automatic control of optical lens injection molding
  • Device and method for realizing automatic control of optical lens injection molding

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Embodiment Construction

[0032] Embodiments of the present invention will be described below with reference to the drawings.

[0033] Principle: as figure 1 As shown, the mold 1 is made of thermosetting resin or glass, and is generally a transparent disc-shaped spherical surface. Refractive index n of glue solution 2 1 and the refractive index of the mold n 2 close, but the refractive index n of the glue 1 Much larger than the refractive index n of air 0 . Therefore, the laser beam 5 incident on the mold 1 may undergo total internal reflection at the interface between the glue solution 2 and the air, resulting in a large deflection of the optical path. If the angle between the incident light path 5 and the normal line of the glue 2 plane is set to be greater than the total internal reflection angle in advance And adjust the position of the photodetector 4 so that the laser beam 6 can enter the photodetector 4 when the glue liquid 2 in the mold 1 does not reach the set height. Then, when the he...

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Abstract

The invention discloses a device and a method for realizing automatic control of optical lens injection molding. The device comprises a lens mold, a laser, a light detector, a relay, a relay control switch and an electromagnetic valve; the lens mold is used for thermal formation of a resin lens; the laser is positioned on one side of the lens mold for emitting a laser beam to the lens mold; the light detector is positioned on the other side of the lens mold for detecting the laser beam after penetrating through the lens mold; the relay changes an on-off state according to signals of the light detector; the relay control switch is used for controlling on-off of a circuit between the relay and the electromagnetic valve; and the electromagnetic valve is used for controlling if resin lens glue is injected in the lens mold. The device skillfully uses the characteristic of the laser beam capable of generating the total internal reflection on glue and air interfaces; and the simpler device can be used for realizing automatic control of the glue injecting process.

Description

technical field [0001] The invention relates to the field of manufacturing optical resin lenses, in particular to an automatic control device and a method for the lens injection process. Background technique [0002] Resin lens is a kind of optical lens widely used at present, which has the advantages of light weight, strong impact resistance, and injection molding. For injection-molded resin lenses, only one precise lens mold is required for mass production, which is beneficial to reduce production costs and increase yield. [0003] Resin lenses are generally thermosetting materials, and their raw materials are in a liquid state. After injection molding is heated, a solid lens is formed, and then the final lens is formed after grinding, polishing, cleaning, and deposition of a functional film. In addition to the injection molding process, other processes are currently automated. How to realize the fully automatic control of the resin lens manufacturing process is a techno...

Claims

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Application Information

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IPC IPC(8): B29D11/00B29C45/76
CPCB29D11/00951B29C45/7613B29C2945/76461B29D11/00009
Inventor毛启楠季振国
OwnerHANGZHOU DIANZI UNIV