Method of monitoring components of a lens forming apparatus

• US 7,045,081 B2
• Filed: 02/20/2001
• Issued: 05/16/2006
• Est. Priority Date: 02/20/2001
• Status: Expired due to Fees

• Current Assignee: Q2100, Inc.
• Original Assignee: Q2100, Inc.
• Inventors: Foreman, John T., Lattis, Matthew C., Powers, Galen R.
• Primary Examiner(s): Vargot, Mathieu D.
• Application Number:
  US09/789,289
• Publication Number:
  US 20020167099A1
• Time in Patent Office: 1,911 Days
• Field of Search: 264/1.1, 264/1.36, 264/1.38, 264/40.1, 425/808
• US Class Current: 264/1.36
• CPC Class Codes: B29D 11/00413 made by moulding between two mould parts which are not in direct contact with one another, e.g. comprising a seal between or on the edges B29D11/00019 - B29D11/00355, B29D11/00423, B29D11/00432 take precedence
• CPC Class Codes: B29D 11/00442 Curing the lens material
• CPC Class Codes: B29D 11/00528 Consisting of two mould halves joined by an annular gasket
• CPC Class Codes: G02B 3/00 Simple or compound lenses
• CPC Class Codes: Y10S 425/808 Lens mold

Abstract

A high volume lens curing system is described. The high volume lens curing system is configured to cure multiple eyeglass lenses in a continuous manner.

Claims

1. A method of preparing an eyeglass lens, comprising:

placing a lens forming composition in a mold cavity of a mold assembly;

monitoring the status of a lens curing unit with a controller;

sending a control signal from the controller to a lens curing apparatus when the status of the lens curing unit indicates that the lens curing unit is ready for use, wherein the lens curing unit is configured to automatically apply light and heat to the mold assembly to at least partially cure the lens forming composition in response to the control signal; and

automatically moving the mold assembly into the lens curing unit in response to the control signal.

2. The method of claim 1, further comprising placing the mold assembly in a mold assembly holder, the mold assembly holder comprising a body and an indentation formed in the body, the indentation complementary to the shape of the mold assembly.

3. The method of claim 1, further comprising placing the mold assembly in a mold assembly holder, the mold assembly holder comprising a body and an indentation formed in the body, the indentation complementary to the shape of the mold assembly, and wherein the indentations of the mold assembly holder define an opening, and wherein the opening is positioned such that activating light passes through the opening and onto the mold assembly during use.

4. The method of claim 1, further comprising placing the mold assembly in a mold assembly holder, the mold assembly holder comprising a body and an indentation formed in the body, the indentation complementary to the shape of the mold assembly, and wherein the mold assembly holder further comprises an additional indentation for holding an additional mold assembly, wherein the additional indentation has a shape that is complementary with the additional mold assembly.

5. The method of claim 1, further comprising placing the mold assembly in a mold assembly holder, the mold assembly holder comprising a body and an indentation formed in the body, the indentation complementary to the shape of the mold assembly, and wherein a portion of the mold assembly holder is configured to hold a job ticket.

6. The method of claim 1, further comprising placing the mold assembly in a mold assembly holder, the mold assembly holder comprising a body and an indentation formed in the body, the indentation complementary to the shape of the mold assembly, and wherein the indentation in the mold assembly holder extends into the body to a depth such that an upper surface of the mold assembly is positioned at or below the upper surface of the body.

7. The method of claim 1, applying light and heat to mold assembly comprises directing activating light toward at least one of the mold members for less than 100 seconds.

8. The method of claim 1, further comprising

demolding the cured lens forming composition from the mold assembly;

and

applying heat to the lens in the absence of activating light, subsequent to directing activating light and heat toward at least one of the mold members.

9. The method of claim 1, further comprising heating the lens forming composition prior to placing the lens forming composition in the mold assembly.

10. The method of claim 1, wherein automatically moving the mold assembly comprises placing the mold assembly on a conveyor system configured to convey the mold assembly to, through, and from the lens curing unit.

12. The method of claim 1, wherein automatically moving the mold assembly comprises placing the mold assembly on a conveyor system configured to convey the mold assembly through the lens curing apparatus, wherein the conveyor system comprises two discrete conveyors, wherein the first conveyor is configured to convey the mold assembly from a first lens curing unit of the lens curing apparatus to a second lens curing unit of the lens curing apparatus, and wherein the second conveyor is configured to convey the mold assembly through the second lens curing unit.

13. The method of claim 1, wherein automatically moving the mold assembly comprises placing the mold assembly on a conveyor system configured to convey the mold assembly through the lens curing apparatus, and wherein the conveyor system comprises a flexible member configured to interact with a mold assembly, and wherein the flexible member is coupled to a motor configured to move the flexible member through the conveyor system.

14. The method of claim 1, further comprising placing the mold assembly in a mold holder, wherein the mold assembly holder comprises a ridge disposed on the bottom surface, wherein the ridge is configured to interact with a conveyor system of the lens curing unit.

15. The method of claim 1, wherein the lens curing unit comprises an activating light system, wherein the activating light system comprises a first set of lamps and a second set of lamps, wherein the first and second set of lamps are positioned on opposite sides of the lens curing unit.

16. The method of claim 1, wherein the lens curing unit comprises an activating light system and wherein the activating light system comprises one or more ultraviolet lights.

17. The method of claim 1, wherein the lens curing apparatus comprises a first lens curing unit comprising a first activating light source, wherein the first lens curing unit is configured to produce activating light directed toward a mold assembly during use;

and a second lens curing unit comprising a second activating light source and heating system, wherein the second activating light source is configured to direct activating light toward a mold assembly during use, and wherein the heating system is configured to heat the interior of the second lens curing unit.

18. The method of claim 1, wherein automatically moving the mold assembly into the lens curing unit comprises controlling speed of a conveyor system in response to a monitored temperature of the lens curing unit.

19. The method of claim 1, wherein the lens curing unit further comprises an anneal unit, the anneal unit comprising an anneal unit heating system, wherein the anneal unit heating system is configured to heat the interior of the anneal unit, and wherein the anneal unit further comprises an anneal unit conveyor system configured to convey the mold assembly through the anneal unit.

20. The method of claim 1, wherein the lens curing apparatus further comprises an air distributor positioned within the lens curing unit, the air distributor being configured to circulate air within the lens curing unit during use.

11. The method of 1, wherein automatically moving the mold assembly comprises placing the mold assembly on a conveyor system configured to convey the mold assembly through the lens curing apparatus, wherein the conveyor system comprises a continuous flexible member extending from a first lens curing unit of the lens curing apparatus through a second lens curing unit of the lens curing apparatus, wherein the flexible member is configured to interact with the mold assembly to convey the mold assembly through the first lens curing unit, to the second lens curing unit, and through the second lens curing unit.