+ Mirrors

Mirrors are used to fold, bend and focus optical beams. FZGFE mirrors are generally manufactured in circle, they can also be cut into square or ellipse upon request. The choice of mirror shape is usually driven by the mounting hardware being used.
When choosing an optical mirror, the important characteristic is as follows: substrate material, surface mirror, flatness/surface accuracy, surface quality and the coating specification.
Mirrors are coated with a high reflection coating, categorized as either metallic coating or dielectric coating. Following types of coating are available:

1. Bare aluminum
2. Protected aluminum
3. Enhanced aluminum
4. Internal silver
5. Protected silver
6. Dielectric high reflective coating

Mirror Substrate Properties:

　

Material

Coefficient of
Thermal Expansion

Cost

Features

BK7

7.5 x 10-6/K

Low

Good performance over visible and near IR spectrum in most applications.

Pyrex

3.25 x 10-6/K

Low

Best all around mirror substrate, low expansion borosilicate glass, resistant to thermal shock

UV Fused Silica

0.52 x 10-6/K

High

Low thermal expansion for excellent stability, high laser damage resistance

Zerodur

0.0 ＼ 0.10 x 10-6 K-1

Medium

Nominally zero thermal expansion for ultra-high stability, unique glass-ceramic material

Note: customized size and coating are available upon request.

Email: sales@fzgfe.cn ▪ Tel: 0086-591-87940821 ▪ Fax 0086-591-87940851