Layered imaging stack for minimizing interference fringes in an imaging device
US5311033A · kind A · utility
4Cited by
14References
17Claims
0Family size
Assignee
Inventor
Key dates
| Filing date | Apr 1, 1993 |
| Grant date | May 10, 1994 |
| Priority date | — |
| Expiry date | Apr 1, 2013 |
Classification
- Technology area (CPC G)Physics
- CPC primaryG01T1/26
- WIPO fieldEnvironmental technology
- WIPO sectorChemistry
Abstract
A layered imaging stack for minimizing interference fringes in an imaging device. A polymer layer has one flat surface and a second opposed surface that has a surface roughness, R.sub.A, within the range of 0.5 .mu.m to 2.5 .mu.m. An adhesive layer provided on the roughened surface of the polymer layer has an index of refraction, n.sub.2, which differs from the refractive index, n.sub.1, of the polymer layer by at least 0.02. The multiplicative product of R.sub.A in .mu.m and the absolute value of n.sub.2 -n.sub.1, .DELTA.n, is within the range of from about 0.01 to 0.05.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.