Invention Grant
- Patent Title: Multi-colored dielectric coating
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Application No.: US16281013Application Date: 2019-02-20
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Publication No.: US11187834B2Publication Date: 2021-11-30
- Inventor: Terry Bluck , Paul Ramon Markoff Johnson , Alexander Vassilievich Demchuk
- Applicant: Intevac, Inc.
- Applicant Address: US CA Santa Clara
- Assignee: Intevac, Inc.
- Current Assignee: Intevac, Inc.
- Current Assignee Address: US CA Santa Clara
- Agency: Womble Bond Dickinson (US) LLP
- Agent Joseph Bach, Esq.
- Main IPC: G02B5/08
- IPC: G02B5/08 ; H04M1/02

Abstract:
A multi-color dielectric coating is formed using interleaved layers of dielectric material, having alternating refractive index, to create reflections at selected wavelengths, thus appearing as different colors. Etching of selected layers at selected locations changes the color appearance of the etched locations, thus generating a coating having multiple colors. The thicknesses of the layers are chosen such that the path-length differences for reflections from different high-index layers are integer multiples of the wavelength for which the coating is designed.
Public/Granted literature
- US20190383976A1 MULTI-COLORED DIELECTRIC COATING Public/Granted day:2019-12-19
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