IP Library › Granted Patent US 12,456,612
Granted Patent B2
US 12,456,612 · App. 18/683,129 · Granted Oct 28, 2025

Apparatus and methods for applying vacuum-plasma treatment

Inventors: Arye Bar Erez (Kfar Sirkin, IL); Haim Engler (Hashmonaim, IL); Jed Arkin (Savyon, IL)
Assignee: ADDON OPTICS LTD.
H01J37/32715B29D11/00432H01J2237/182
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Quick Facts
Patent No.
US 12,456,612
App. No.
18/683,129
Granted
Oct 28, 2025
Kind
B2
Abstract

Apparatus and methods are described including a vacuum-plasma-jig ( 20 ) that receives an object ( 10 ) during application of a vacuum plasma-treatment to a first surface ( 12 ) of the object 10 ). A receptacle ( 22 ) and base ( 30 ) of the vacuum-plasma-jig ( 20 ) are shaped such that when the receptacle ( 22 ) receives a portion of a second surface ( 14 ) of the object ( 10 ), there is a hollow space ( 28 ) proximate to the portion of the second surface ( 14 ) of the object ( 10 ). The vacuum-plasma-jig ( 20 ) defines a channel ( 32 ) therethrough, a first end ( 34 ) of the channel ( 32 ) opening to an exterior of the vacuum-plasma-jig ( 20 ) and a second end ( 36 ) of the channel ( 32 ) opening to the hollow space ( 28 ), a ratio of a length of the channel in mm to a mean cross-sectional area of the channel in square mm being greater than 100:1. Other applications are also described.

Claims (40)

1. Apparatus for use with an object having first and second surfaces and a vacuum-plasma chamber, the apparatus comprising:

a vacuum-plasma-jig configured to receive the object during application of a vacuum plasma-treatment to the first surface of the object within the vacuum-plasma chamber, the vacuum-plasma jig comprising:

a receptacle configured to receive at least a portion of the second surface of the object when the second surface is placed upon the receptacle; and

a base upon which the receptacle is disposed,

wherein:

the receptacle and base are shaped such that when the receptacle receives the portion of the second surface of the object, there is a hollow space proximate to the portion of the second surface of the object, and

the jig defines a channel therethrough, a first end of the channel opening to an exterior of the vacuum-plasma-jig and a second end of the channel opening to the hollow space, a ratio of a length of the channel in mm to a mean cross-sectional area of the channel in square mm being greater than 100:1.

2. The apparatus according to claim 1 , wherein the channel is shaped as a spiral.

3. The apparatus according to claim 1 , wherein the channel is defined through the base, a first end of the channel opening to an exterior of the base and a second end of the channel opening to the hollow space.

4. The apparatus according to claim 1 , wherein the channel comprises a tube, a first end of the tube opening to an exterior of the vacuum-plasma-jig and a second end of the tube opening to the hollow space.

5. The apparatus according to claim 1 , wherein the channel is configured such that a strength of any plasma entering the hollow space is substantially weakened such that it does not damage the portion of the second surface.

6. The apparatus according to claim 1 , wherein the receptacle is configured to receive the entire second surface of the object when the second surface is placed upon the receptacle.

7. The apparatus according to claim 1 , wherein the receptacle is covered with a soft material layer that is configured to receive at least the portion of the second surface.

8. The apparatus according to claim 1 , wherein the channel is configured such that, when vacuum is applied within the vacuum-plasma chamber, the portion of the second surface is substantially sealed with respect to the receptacle.

9. The apparatus according to claim 8 , wherein the channel is configured such that, when the vacuum within the vacuum-plasma chamber is terminated, the portion of the second surface is readily removable from the receptacle, due to sealing between the receptacle and the second surface being weakened by inflow of air into the hollow space via the channel.

10. The apparatus according to claim 1 , wherein the object comprises a curved object that defines a concave surface and a convex surface.

11. The apparatus according to claim 10 , wherein the vacuum-plasma-jig is configured to receive the object during application of the vacuum plasma-treatment to the concave surface of the object within the vacuum-plasma chamber, and the receptacle is configured to receive a portion of the convex surface of the object when the convex surface is placed upon the receptacle.

12. The apparatus according to claim 10 , wherein the vacuum-plasma-jig is configured to receive the object during application of the vacuum plasma-treatment to the convex surface of the object within the vacuum-plasma chamber, and the receptacle is configured to receive a portion of the concave surface of the object when the concave surface is placed upon the receptacle.

13. The apparatus according to claim 10 , wherein the curved object includes a lens that defines a concave surface and a convex surface, and wherein the vacuum-plasma-jig is configured to receive the lens during application of a vacuum plasma-treatment to the concave surface of the lens within the vacuum-plasma chamber.

14. The apparatus according to claim 10 , wherein the curved object includes a lens that defines a concave surface and a convex surface, and wherein the vacuum-plasma-jig is configured to receive the lens during application of a vacuum plasma-treatment to the convex surface of the lens within the vacuum-plasma chamber.

15. A method for use with an object having first and second surfaces, the method comprising:

placing the object on a receptacle of a vacuum-plasma-jig such that at least a portion of the second surface of the object is received by the receptacle,

wherein:

the vacuum-plasma jig additionally includes a base, and the receptacle and base are shaped such that when the receptacle receives the portion of the second surface of the object, there is a hollow space proximate to the portion of the second surface of the object, and

the vacuum-plasma jig defines a channel therethrough, a first end of the channel opening to an exterior of the vacuum-plasma-jig and a second end of the channel opening to the hollow space, a ratio of a length of the channel in mm to a mean cross-sectional area of the channel in square mm being greater than 100:1; and

applying a vacuum plasma-treatment to the first surface of the object within a vacuum-plasma chamber, while the portion of the second surface of the object is received by the receptacle.

16. The method according to claim 15 , wherein the channel is shaped as a spiral.

17. The method according to claim 15 , wherein the channel is defined through the base, a first end of the channel opening to an exterior of the base and a second end of the channel opening to the hollow space.

18. The method according to claim 15 , wherein the channel includes a tube, a first end of the tube opening to an exterior of the vacuum-plasma-jig and a second end of the tube opening to the hollow space.

19. The method according to claim 15 , wherein the channel is configured such that a strength of any plasma entering the hollow space is substantially weakened such that it does not damage the portion of the second surface.

20. The method according to claim 15 , wherein the receptacle is configured to receive the entire second surface of the object when the second surface is placed upon the receptacle.

21. The method according to claim 15 , wherein the channel is configured such that, when vacuum is applied within the vacuum-plasma chamber, the portion of the second surface is substantially sealed with respect to the receptacle.

22. The method according to claim 21 , wherein the channel is configured such that, when the vacuum within the vacuum-plasma chamber is terminated, the portion of the second surface is readily removable from the receptacle, due to sealing between the receptacle and the second surface being weakened by inflow of air into the hollow space via the channel.

23. The method according to claim 15 , wherein the object includes a curved object that defines a concave surface and a convex surface.

24. The method according to claim 23 , wherein the vacuum-plasma-jig is configured to receive the object during application of the vacuum plasma-treatment to the concave surface of the object within the vacuum-plasma chamber, and the receptacle is configured to receive a portion of the convex surface of the object when the convex surface is placed upon the receptacle.

25. The method according to claim 23 , wherein the vacuum-plasma-jig is configured to receive the object during application of the vacuum plasma-treatment to the convex surface of the object within the vacuum-plasma chamber, and the receptacle is configured to receive a portion of the concave surface of the object when the concave surface is placed upon the receptacle.

26. The method according to claim 23 , wherein the curved object includes a lens that defines a concave surface and a convex surface, and wherein the vacuum-plasma-jig is configured to receive the lens during application of a vacuum plasma-treatment to the concave surface of the lens within the vacuum-plasma chamber.

27. The method according to claim 23 , wherein the curved object includes a lens that defines a concave surface and a convex surface, and wherein the vacuum-plasma-jig is configured to receive the lens during application of a vacuum plasma-treatment to the convex surface of the lens within the vacuum-plasma chamber.

28. The method according to claim 15 , wherein placing the object on a receptacle of a vacuum-plasma-jig such that at least a portion of the second surface of the object is received by the receptacle comprises placing the object on a soft material layer that is configured to receive at least the portion of the second surface.

29. The method according to claim 28 , further comprising coating the soft material layer with a lubricant prior to placing the object on the receptacle of the vacuum-plasma-jig, the lubricant being configured to form a seal between the portion of the second surface of the object and the soft material layer.

Assignments (1)
ASSIGNMENT OF ASSIGNOR'S INTEREST Recorded Feb 13, 2024
From: BAR EREZ, ARYE; ENGLER, HAIM; ARKIN, JED
To: ADDON OPTICS LTD.
Reel/Frame 066447/0222 →
Continuity (2)
Provisional Application 63233567 · Aug 16, 2021
Related Publication 20240355594A1 · Oct 24, 2024
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