CN-122007988-A - Processing method of high-precision lens with holes

Abstract

The application provides a processing method of a high-precision lens with holes, which comprises the steps of providing a blank, processing the blank to obtain a lens substrate, wherein the outer surface of the lens substrate meets the quality requirement of a finished product, providing a protecting piece, bonding the protecting piece on the cutter outlet surface of the lens substrate, taking the processed outer surface of the lens substrate as a positioning reference, carrying out hole processing on one end of the lens substrate, which is far away from the protecting piece, to obtain the lens with holes, wherein the hole precision of the lens with holes meets the quality requirement of the finished product, and separating the lens with holes from the protecting piece. The problem that the surface shape precision and the coaxiality of the existing lens with the hole cannot meet the high precision requirement is solved.

Inventors

• Qin Daiying
• GUO HUIHUI

Assignees

• 北京创思工贸有限公司

Dates

Publication Date

20260512

Application Date

20260127

Claims (10)

1. 1. A method of processing a high precision holed lens, the method comprising the steps of: Providing a blank, and processing the blank to obtain a lens substrate, wherein the outer surface of the lens substrate meets the quality requirement of a finished product; providing a protective piece, and bonding the protective piece on the knife outlet surface of the lens substrate; Taking the processed outer surface of the lens substrate as a positioning reference, and carrying out hole processing on one end of the lens substrate, which is far away from the protection piece, so as to obtain a lens with holes, wherein the hole precision of the lens with holes meets the quality requirement of a finished product; The perforated lens is separated from the protector.
2. 2. The method of manufacturing a high-precision holed lens of claim 1, wherein the step of providing a protective member and adhering the protective member to the exit face of the lens substrate comprises: and adhering the matching surface of the protective piece to the cutter outlet surface of the lens substrate, wherein the outline of the matching surface is matched with the outline of the cutter outlet surface.
3. 3. The method of processing a high-precision holed lens of claim 2, wherein the step of bonding the mating surface of the protector to the tool exit surface of the lens substrate comprises: the mating surface covers an area of the hole to be processed in the lens substrate.
4. 4. A method of manufacturing a high precision holed lens as claimed in claim 3, wherein the step of bonding the mating surface of the protector to the tool exit surface of the lens substrate further comprises: The protection piece comprises protection glass, one end of the protection glass forms a matching surface, and the matching surface is adhered to the knife outlet surface of the lens substrate through optical cement.
5. 5. The method of processing a high-precision holed lens according to claim 2, wherein in the step of performing hole processing on an end of the lens substrate facing away from the protector with the processed outer surface of the lens substrate as a positioning reference, a holed lens is obtained, wherein: when the machined outer surface of the lens substrate comprises a lens outer circular surface and a lens end surface platform, taking the lens outer circular surface and the lens end surface platform as positioning references, and carrying out hole machining on one end of the lens substrate, which is far away from the protection piece, so as to obtain the lens with the holes.
6. 6. The method of processing a high-precision holed lens as claimed in claim 5, wherein when the processed outer surface of the lens substrate includes a lens outer circumferential surface and a lens end surface land, hole processing is performed at an end of the lens substrate facing away from the protector with the lens outer circumferential surface and the lens end surface land as positioning references, and the holed lens is obtained by: one end of the protection piece, which is away from the lens end face, does not protrude from the lens end face platform.
7. 7. The method of processing a high-precision holed lens according to claim 2, wherein in the step of performing hole processing on an end of the lens substrate facing away from the protector with the processed outer surface of the lens substrate as a positioning reference, a holed lens is obtained, wherein: When the machined outer surface of the lens substrate comprises a lens outer circular surface, taking the lens outer circular surface and the end face, deviating from the matching surface, of the protecting piece as positioning references, and carrying out hole machining on one end, deviating from the protecting piece, of the lens substrate to obtain the lens with the holes.
8. 8. The method of processing a high-precision holed lens as claimed in claim 7, wherein when the outer surface processed on the lens substrate includes a lens outer circumferential surface, hole processing is performed at an end of the lens substrate facing away from the protector with an end surface of the lens outer circumferential surface and the protector facing away from the mating surface as positioning references, and the holed lens is obtained by: and processing the end surface of the protection piece, which is away from the matching surface, in advance to form a positioning surface.
9. 9. The method of processing a high-precision holed lens of claim 1, wherein the step of hole processing is performed at an end of the lens substrate facing away from the protector with respect to the processed outer surface of the lens substrate as a positioning reference, and comprises: when the hole is machined into a conical hole, and the small hole opening of the conical hole is positioned on one side of the cutter outlet face and the large hole opening of the conical hole is positioned on one side away from the cutter outlet face, the conical hole machining is performed through a custom cutter, and the custom cutter and the conical hole have the same angle.
10. 10. The method of processing a high precision holed lens of claim 1, wherein in the step of providing a blank, processing the blank to obtain a lens substrate, wherein the outer surface of the lens substrate meets the quality requirements of the finished product: The polishing surface of the finished product is obtained by sequentially milling, fine grinding and polishing two opposite end surfaces of the blank; And processing the outer side wall surface of the blank by centering edging to obtain the lens substrate.

Description

Processing method of high-precision lens with holes Technical Field The application relates to the technical field of optical piece processing, in particular to a processing method of a high-precision lens with holes. Background A holed lens generally refers to an optical element having a counterbore (groove) or a through hole (circular hole or tapered hole) in the center of the lens. In the processing process of the optical piece, in order to ensure that the processed finished product does not generate edge breakage at the orifice position, a hole of a lens is usually processed first, and then the surface of the lens is milled or finely ground. Therefore, even if the edge jumping occurs in the prior punching process, the edge jumping can be removed by means of the subsequent milling and grinding and fine grinding procedures, and the surface shape quality of the lens can be still ensured. However, for the processing of a high-precision lens with a conical hole, if a processing method of punching first and then fine grinding and polishing is adopted, the range of the surface shape where the edge of the hole can form a collapsed edge is large, and the subsequent polished surface is difficult to ensure high surface shape precision. In addition, in the process of punching and then fine grinding and polishing, centering and edging are needed, particularly under the condition of a conical hole, the positioning of the conical hole is difficult to perform centering processing, so that the coaxiality of the processed hole and the outer diameter can be changed, and the high coaxiality requirement cannot be effectively ensured. Accordingly, the prior art is still in need of improvement and development. Disclosure of Invention The application aims to provide a processing method of a high-precision perforated lens, which solves the problem that the surface shape precision and coaxiality of the existing perforated lens after processing cannot meet the high-precision requirement. In order to achieve the above purpose, the application adopts the following technical scheme: the application provides a processing method of a high-precision lens with holes, which comprises the following steps: providing a blank, and processing the blank to obtain a lens substrate, wherein the outer surface of the lens substrate meets the quality requirement of a finished product; Providing a protective piece, and bonding the protective piece on the knife outlet surface of the lens substrate; Taking the processed outer surface of the lens substrate as a positioning reference, and carrying out hole processing on one end of the lens substrate, which is away from the protection piece, so as to obtain a lens with holes, wherein the hole precision of the lens with holes meets the quality requirement of a finished product; The holed lens is separated from the protector. In an alternative embodiment, the step of adhering the protective member to the blade-out surface of the lens substrate includes: and adhering the matching surface of the protective piece to the cutter outlet surface of the lens substrate, wherein the outline of the matching surface is matched with the outline of the cutter outlet surface. In an alternative embodiment, the step of adhering the mating surface of the protector to the exit face of the lens substrate comprises: The mating surface covers the area of the hole to be machined in the lens substrate. In an alternative embodiment, the step of adhering the mating surface of the protector to the exit surface of the lens substrate further comprises: The protection piece comprises protection glass, one end of the protection glass forms a matching surface, and the matching surface is adhered to the knife outlet surface of the lens substrate through optical cement. In an alternative embodiment, in the step of performing hole processing on the end of the lens substrate facing away from the protector with the processed outer surface of the lens substrate as a positioning reference, a lens with holes is obtained: when the machined outer surface of the lens substrate comprises a lens outer circular surface and a lens end surface platform, taking the lens outer circular surface and the lens end surface platform as positioning references, and carrying out hole machining on one end of the lens substrate, which is far away from the protection piece, so as to obtain the lens with the holes. In an alternative embodiment, when the machined outer surface of the lens substrate includes a lens outer circumferential surface and a lens end surface platform, the lens outer circumferential surface and the lens end surface platform are used as positioning references, and the hole machining is performed on the end, away from the protection member, of the lens substrate, so as to obtain the lens with the hole, wherein: One end of the protecting piece, which is away from the end face of the lens not protruding out of the lens end surface platform. In an al