Jason K Schaefer

US Patent:

20190170932, Jun 6, 2019

Filed:

Feb 7, 2019

Appl. No.:

16/270243

Inventors:

- Austin TX, US
Frank Y. Xu - Austin TX, US
Vikramjit Singh - Pflugerville TX, US
Eric C. Browy - Coral Springs FL, US
Jason Schaefer - Coral Springs FL, US
Robert D. TeKolste - Fort Lauderdale FL, US
Victor Kai Liu - Mountain View CA, US
Samarth Bhargava - Palo Alto CA, US
Jeffrey Dean Schmulen - Austin TX, US
Brian T. Schowengerdt - Seattle WA, US

International Classification:

G02B 6/02
G02B 27/01
G02F 1/35
G02B 6/35
G02B 6/12

Abstract:

Techniques are described for using confinement structures and/or pattern gratings to reduce or prevent the wicking of sealant polymer (e.g., glue) into the optically active areas of a multi-layered optical assembly. A multi-layered optical structure may include multiple layers of substrate imprinted with waveguide grating patterns. The multiple layers may be secured using an edge adhesive, such as a resin, epoxy, glue, and so forth. A confinement structure such as an edge pattern may be imprinted along the edge of each layer to control and confine the capillary flow of the edge adhesive and prevent the edge adhesive from wicking into the functional waveguide grating patterns of the layers. Moreover, the edge adhesive may be carbon doped or otherwise blackened to reduce the reflection of light off the edge back into the interior of the layer, thus improving the optical function of the assembly.

US Patent:

20180059320, Mar 1, 2018

Filed:

Aug 24, 2017

Appl. No.:

15/685748

Inventors:

- Austin TX, US
Frank Y. Xu - Austin TX, US
Vikramjit SINGH - Pflugerville TX, US
Eric C. Browy - Coral Springs FL, US
Jason SCHAEFER - Coral Springs FL, US
Robert D. TeKolste - Fort Lauderdale FL, US
Victor Kai LIU - Mountain View CA, US
Samarth BHARGAVA - Palo Alto CA, US
Jeffrey Dean SCHMULEN - Austin TX, US
Brian T. SCHOWENGERDT - Seattle WA, US

International Classification:

G02B 6/02
G02B 6/12
G02B 6/35
G02F 1/35

Abstract:

Techniques are described for using confinement structures and/or pattern gratings to reduce or prevent the wicking of sealant polymer (e.g., glue) into the optically active areas of a multi-layered optical assembly. A multi-layered optical structure may include multiple layers of substrate imprinted with waveguide grating patterns. The multiple layers may be secured using an edge adhesive, such as a resin, epoxy, glue, and so forth. A confinement structure such as an edge pattern may be imprinted along the edge of each layer to control and confine the capillary flow of the edge adhesive and prevent the edge adhesive from wicking into the functional waveguide grating patterns of the layers. Moreover, the edge adhesive may be carbon doped or otherwise blackened to reduce the reflection of light off the edge back into the interior of the layer, thus improving the optical function of the assembly.