Kevin R Downing

US Patent:

20210206156, Jul 8, 2021

Filed:

Mar 19, 2021

Appl. No.:

17/206659

Inventors:

- Mayfield Heights OH, US
Kevin R. Downing - Westford MA, US

International Classification:

B33Y 30/00
G02B 5/20
B33Y 10/00
B29C 70/78
G02B 5/00
B29C 64/106

Abstract:

A three-dimensional inkjet printer and method for printing an aperture mask on a multi-spectral filter array. A custom tray is used by the printer allowing for printing on a prefabricated filter array. Photopolymer resin is deposited on the prefabricated filter array to form the aperture mask of dark mirror coating. An ultraviolet lamp illuminates the deposited photopolymer resin on the surface of the prefabricated multi-spectral optical filter array to cure the resin, thereby forming the mask. The prefabricated multi-spectral optical filter array includes an optical coating on at least one side, the aperture mask being formed on the optical coating, without the use of heat, chemical etching, or deformation of the optical coating.

US Patent:

20190079226, Mar 14, 2019

Filed:

Sep 12, 2018

Appl. No.:

16/129309

Inventors:

- Mayfield Heights OH, US
Kevin R. Downing - Westford MA, US

International Classification:

G02B 5/20
G03F 7/20
G03F 7/039
G03F 7/038
G03F 7/00

Abstract:

An apparatus (e.g., a multi-spectral optical filter array, an optical wafer, an optical component) has an aperture mask printed directly thereon, the aperture mask including a positive or negative photoresist. The apparatus includes a substrate having the aperture mask printed on at least one of a light entrance surface or a light exit surface of the substrate so as to provide an aperture over a portion of the substrate. The photoresist from which the aperture mask is formed is photo-definable or non-photo-definable, and is deposited/printed to form the aperture mask on the substrate.

US Patent:

20170173628, Jun 22, 2017

Filed:

Nov 15, 2016

Appl. No.:

15/351535

Inventors:

- Mayfield Heights OH, US
Kevin R. Downing - Westford MA, US

International Classification:

B05D 1/26
B33Y 30/00
B05D 3/06
B33Y 10/00
G02B 5/20
G02B 5/26

Abstract:

A three-dimensional inkjet printer and method for printing an aperture mask on a multi-spectral filter array. A custom tray is used by the printer allowing for printing on a prefabricated filter array. Photopolymer resin is deposited on the prefabricated filter array to form the aperture mask of dark mirror coating. An ultraviolet lamp illuminates the deposited photopolymer resin on the surface of the prefabricated multi-spectral optical filter array to cure the resin, thereby forming the mask. The prefabricated multi-spectral optical filter array includes an optical coating on at least one side, the aperture mask being formed on the optical coating, without the use of heat, chemical etching, or deformation of the optical coating.

US Patent:

20140307309, Oct 16, 2014

Filed:

Apr 11, 2014

Appl. No.:

14/250553

Inventors:

Kevin R. Downing - Westford MA, US
Ian S. Tribick - Groton MA, US

Assignee:

MATERION CORPORATION - Mayfield Heights OH

International Classification:

G02B 5/28
G02B 5/20

US Classification:

359359, 359589, 156256

Abstract:

Optical filter elements each include a parallelogram-shaped substrate with parallel light entrance and light exit surfaces and parallel slanted sidewalls slanted at an angle, and an interference filter disposed on one or both of the light entrance surface and the light exit surface. The optical filter elements are bonded together at the slanted sidewalls to form the optical filter array. Light is filtered by illuminating the optical filter array at an angle θ equal to or corresponding to the angle of the slanted sidewalls. In some embodiments the angle of the slanted sidewalls corresponds to the angle-of-incidence θ by Snell's law.