Plastic mirrors having enhanced thermal stability
US5864434A · kind A · utility
85Cited by
10References
9Claims
0Family size
Assignee
Inventor
Key dates
| Filing date | Jul 2, 1996 |
| Grant date | Jan 26, 1999 |
| Priority date | — |
| Expiry date | Jul 2, 2016 |
Classification
- Technology area (CPC G)Physics
- CPC primaryG02B5/0808
- WIPO fieldOptics
- WIPO sectorInstruments
Abstract
A mirror having improved resistance to heat distortion and loss of dimensional stability when exposed to heat radiation . The mirror has a substrate of glass or plastic having front and back surfaces which can be of similar or different shape , and is coated with similar or dissimilar low-emissivity reflected layers on both surfaces. Radiation is reflected by the back surface (away from the mirror) thereby reducing amount of energy which is absorbed at the back surface of the mirror. This equalizes the temperature through the mirror and reduces thermally included warping of the mirror.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.