METHOD OF FORMING RELIEF SURFACES
Assignee
BATTELLE MEMORIAL INSTITUTE
Filed
Jan 11, 1993
Granted
Jan 24, 1995
Location
COLUMBUS OH US
Abstract
A ultrablack article made of a resin containing light absorbing pigments or dyes and its method of manufacture. The surface of the article is provided with light reflecting projections that cause incident light to reflect from the sides of such projections at least twice and preferably at least three times before reflecting from the articles surface. The vast majority of the incident light is thereby transmitted into the article where it is absorbed. The projections are advantageously conical, pyramidal or ridge shaped. The total incident light that reflects from the surface and from the interior of the article is not greater than 0.5%. The surface can be made by applying cone or pyramid shaped light beams to photoresist stepwise to make cones and pyramids and by scanning to make ridges. Means are provided to transfer such surfaces to more suitable resins and to do so continuously.
Source: Google Patents
35 USC §181 Secrecy Order
Imposed
Apr 6, 1993
Rescinded
Mar 22, 1994
Duration
11 months
Inventor
- 1WILLIAM M. MYERS
Record Details
- Patent number
- US 5384571
- Application
- 00800258
- Aerospace match
- Yes
- Dataset source
- 35 USC §181 SO records
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