Optical element, assembly comprising such an optical element and method of manufacturing an optical element

Patent metadata

Field	Value
Publication number	US-11370175-B2
Application number	US-201816621841-A
Country	US
Kind code	B2
Filing date	Jun 19, 2018
Priority date	Jun 19, 2017
Publication date	Jun 28, 2022
Grant date	Jun 28, 2022

Abstract

An optical element includes an optical lens produced by an additive manufacturing method and a holder formed at least in part with the optical lens by the additive manufacturing method. The holder is adapted for cooperation with a manufacturing machine to thereby position the optical lens at a predetermined position in the manufacturing machine. A corresponding assembly and a method of manufacturing an optical element are also described.

First claim

The invention claimed is:

1. An optical element comprising:
an optical lens produced by an additive manufacturing method; and
a holder formed at least in part with the optical lens by said additive manufacturing method, the holder being configured to cooperate with a manufacturing machine to thereby position the optical lens at a predetermined position in the manufacturing machine, the holder comprising at least two parts connected to each other by a frangible portion.

2. The optical element according to claim 1 , wherein one of said parts is configured to cooperate with said manufacturing machine and the other one of said parts is configured to cooperate with another manufacturing machine.

3. The optical element according to claim 1 , wherein the holder further comprises a marking representing a code associated with the optical lens.

4. The optical element according to claim 3 , wherein the holder surrounds the optical lens.

5. The optical element according to claim 1 , wherein the holder further comprises an additional part, the additional part being configured to cooperate with the manufacturing machine.

6. The optical element according to claim 5 , wherein the additional part is an external ring.

7. The optical element according to claim 1 , wherein the holder further comprises at least a position reference element.

8. The optical element according to claim 1 , wherein the holder is configured to orient the optical lens along at least one axis.

9. The optical element according to claim 1 , wherein the optical lens is an ophthalmic lens.

10. The optical element according to claim 1 , wherein the optical lens has an optical center, and
wherein the holder is configured to position the optical center of the optical lens at a predetermined position in the manufacturing machine.

11. An assembly comprising:
the optical element according to claim 1 ; and
said manufacturing machine.

12. A method of manufacturing an optical element, the method comprising:
producing, by additive manufacturing, an optical lens and at least part of a holder formed with the optical lens, the holder being configured to cooperate with at least one manufacturing machine to thereby position the optical lens at a predetermined position in the at least one manufacturing machine, the holder comprising at least two parts connected to each other by a frangible portion.

13. The method according to claim 12 , further comprising mounting the optical element in the at least one manufacturing machine via said holder, thereby positioning the optical lens at said predetermined position.

14. The method according to claim 12 , further comprising a preliminary step of designing each of said parts depending respectively on the at least one manufacturing machine with which each of the parts is configured to cooperate.

15. The optical element according to claim 2 , wherein the holder further comprises a marking representing a code associated with the optical lens.

16. The optical element according to claim 2 , wherein the holder further comprises an additional part, the additional part being configured to cooperate with the manufacturing machine.

17. The optical element according to claim 3 , wherein the holder further comprises an additional part, the additional part being configured to cooperate with the manufacturing machine.

Assignees

• Essilor Int

Inventors

• Chabin Laurent
• Bultez Xavier
• Schott Guy

Classifications

• B29D11/00942

  where the lens material is mounted in a support for mounting onto a cutting device, e.g. a lathe, and where the support is of machinable material, e.g. plastics · CPC title

• B29C64/40 Primary

  Structures for supporting 3D objects during manufacture and intended to be sacrificed after completion thereof · CPC title

• G02C2200/00

  Generic mechanical aspects applicable to one or more of the groups G02C1/00 - G02C5/00 and G02C9/00 - G02C13/00 and their subgroups · CPC title

• B29D11/00432

  Auxiliary operations, e.g. machines for filling the moulds (B29D11/00125 takes precedence) · CPC title

• B33Y10/00

  Processes of additive manufacturing · CPC title