Systems and methods for forming energy relays with transverse energy localization

Patent metadata

Field	Value
Publication number	US-11237307-B2
Application number	US-201916634088-A
Country	US
Kind code	B2
Filing date	Jan 12, 2019
Priority date	Jan 14, 2018
Publication date	Feb 1, 2022
Grant date	Feb 1, 2022

Abstract

Disclosed are systems and methods for manufacturing energy relays for energy directing systems. Methods and devices are disclosed for forming random and non-random patterns of energy relay materials with energy localization properties. Methods and devices are disclosed for forming energy relays of different shapes.

First claim

What is claimed is:

1. A method for forming an energy relay comprising:
providing first and second energy relay materials;
forming an arrangement of the first and second energy relay materials in a transverse plane of the energy relay, the arrangement allowing for energy to be transported along a longitudinal plane of the energy relay material such that the energy relay has a substantially higher energy transport efficiency in the longitudinal plane than in the transverse plane;
accommodating the arrangement of first and second energy relay materials in a constrained space;
processing the arrangement while accommodated in the constrained space to form a fused structure; the fused structure having a transverse dimension defined by the constrained space; and
removing the fused structure of energy relay material from the constrained space after the processing step;
wherein the constrained space is defined by a plurality of abutting adjustable walls extending along a longitudinal direction and each comprising an end portion and a side portion, and wherein the adjustable walls are configured to vary a transverse dimension of at least a portion of the constrained space along the longitudinal direction by adjusting positions of the adjustable walls relative to one another in a transverse direction, perpendicular to the longitudinal direction, wherein adjusting comprises abutting and sliding the end portion of a first wall against the side portion of a second wall in a first direction, and abutting and sliding the side portion of the first wall against the end portion of a third wall in a second direction.

2. The method of claim 1 , wherein processing comprises a series of one or more steps, where each step comprises one of:
applying a compressive force to the arrangement,
applying heat to the arrangement,
applying cooling to the arrangement, or
performing a chemical reaction to the arrangement.

3. The method of claim 1 , wherein processing comprises applying a first compressive force to the arrangement of constrained energy relay materials along at least the transverse plane,
applying heat to the compressed arrangement in one or more stages, each stage comprising a stage temperature and a stage length of time,
applying a second compressive stress to the heated arrangement, the second compressive stress being greater than the first compressive stress, and
cooling the heated arrangement.

4. The method of claim 3 , wherein at least one stage temperature of the one or more stages is substantially the glass transition temperature of at least one of the first or second energy relay materials.

5. The method of claim 3 , wherein at least one stage temperature of the one or more stages is substantially the average glass transition temperature of all of the energy relay materials.

6. The method of claim 3 , wherein processing comprises:
applying heat to the constrained arrangement; and
cooling the heated arrangement while being rested within the constrained space.

7. The method of claim 6 , wherein applying heat to the arrangement comprises heating the constrained energy relay materials to a first temperature, and further applying heat to change the temperature of the heated arrangement to a second temperature, different than the first temperature, before applying cooling to the arrangement.

8. The method of claim 3 , wherein the constrained space is defined by a fixture comprising first and second components configured to join together to form the constrained space therebetween.

9. The method of claim 7 , wherein processing comprises adjusting the fixture to apply a compressive force to the arrangement.

10. The method of claim 1 , wherein the plurality of adjustable walls comprises strips.

11. The method of claim 1 , wherein processing comprises adjusting the positions of the adjustable walls relative to one another to apply a compressive force to the arrangement.

12. The method of claim 2 , wherein providing first and second energy relay materials comprises:
providing first and second materials;
heating the first and second materials, such that the first and second materials have an increased formability in a longitudinal plane, as well as in a transverse plane perpendicular to the longitudinal plane, of the first and second materials; and
forming the first and second energy relay materials by applying a tensile force along the longitudinal planes of the first and second materials, thereby reducing a dimension of the first and second materials in the transverse plane.

13. The method of claim 1 , the method further comprising:
heating at least a first portion of the fused structure, the first portion having a first transverse dimension prior to being heated; and
applying a tensile force longitudinally along at least the first portion of the heated fused structure, thereby altering the first portion to have a second transverse dimension, narrower than the first transverse dimension, while substantially maintaining the arrangement of first and second energy relay materials.

14. The method of claim 13 , further comprising repeating said accommodating, processing, removing, heating, and applying steps for an arrangement of altered first portions.

15. The method of claim 13 , further comprising forming a second arrangement comprising a plurality of altered first portions; and
processing the second arrangement into a second fused structure;
heating at least a first portion of the second fused structure, the first portion of the second fused structure having a first transverse dimension prior to being heated; and
applying a tensile force longitudinally along at least the first portion of the heated second fused structure, thereby altering the first portion of the second fused structure to have a second transverse dimension, narrower than the first transverse dimension, while substantially maintaining the second arrangement in the transverse plane.

16. The method of claim 15 , further comprising arranging a plurality of altered first portions of the second arrangement into a third arrangement; and
processing the third arrangement into a third fused structure.

17. The method of claim 13 , wherein processing comprises at least one of:
applying a compressive force to the arrangement,
applying heat to the arrangement,
applying cooling to the arrangement, or
performing a chemical reaction to the arrangement.

18. The method of claim 17 , wherein performing a chemical reaction to the arrangement comprises using a catalyst.

19. The method of claim 13 , wherein processing comprises more than one of the following steps performed in any order:
applying a compressive force to the arrangement,
applying heat to the arrangement,
applying cooling to the arrangement, or
performing a chemical reaction to the arrangement.

20. The method of claim 13 , wherein the heating step comprises heating the fused structure to a temperature such that the fused structure has a formability in both the longitudinal and transverse direction to allow altering of the first transverse dimension by applying the tensile force longitudinally.

21. The method of claim 20 , wherein the temperature is substantially the glass transition temperature of either the first or second energy relay materials.

22. The method of claim 20 , wherein the temperature is substantially the average glass transition temperature of the first and second energy relay materials.

Assignees

• Light Field Lab Inc

Inventors

• Karafin Jonathan Sean
• Bevensee Brendan Elwood
• Ibe Ed
• Perez Jared
• Chen Xudong
• Rickwalder Joseph W

Classifications

• G02B5/32

  Holograms used as optical elements · CPC title

• G02B3/0056

  arranged along two different directions in a plane, e.g. honeycomb arrangement of lenses (G02B3/0043 takes precedence; miniaturised objectives for electronic devices employing wafer level optics G02B13/0085) · CPC title

• G02B30/00

  Optical systems or apparatus for producing three-dimensional [3D] effects, e.g. stereoscopic images (in microscopes G02B21/22) · CPC title

• G02B6/04 Primary

  formed by bundles of fibres (G02B6/24 takes precedence) · CPC title

• B29D11/00721

  involving preforms for the manufacture of light guides · CPC title