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Mirror is a reflecting surface that forms an image of an object when light rays coming from that object fall upon it. Usually mirrors are made of plate glass, one side of which is coated with metal or some special preparation to serve as a reflecting surface. The junction of this reflecting surface and the plate glass is called the mirror line. Highly polished metal and other materials serve also as mirrors, fused silica is used for applications that require high precision because of its very low thermal expansion.

Crysmit offers dielectric coated mirrors and metal coated mirrors which are made of substrate such as Bk7, K9, Fused Silica, CaF2, Sapphire and so on.

Attribute                             Specification
Material：                              N-BK7,H-K9L,Fused Silica, Sapphire etc.
Typical Diameter (Φmm)：               10.0, 12.7, 15.0, 20.0, 25.4, 30.0
Typical Thickness (mm)：                2.0, 3.0, 6.0,6.35
Diameter Tolerance (mm)：               +0.0/-0.2 (General), +0.0/-0.1 (High Precision)
Thickness Tolerance (mm)：              ±0.2 (General), ±0.05 (High Precision)
Clear Aperture：                         >80% (Small Size), >90% (Large Size)
Flatness (per 25mm/ 633nm)：             λ(General), λ/8 (High Precision)
Incidence Angle：                        0° or 45°
Parallelism：                            3 min. (General), 3 sec. (High Precision)
Surface Quality：                        60/40 (General), 10/5 (High Precision)
Bevel (face width x 45°)：              <0.25mm
Coating：                               Dielectric coated AR,HR,PR or mirrors and metal coated Al,Ag,Au

Note for Mirror:
(1). Custom-made windows at any size are available.Besides round, windows at shape of quadrate, triangular, or other polygonal are available.
(2). Thickness from 1.0mm to 50.0 mm is available upon request.
(3). 100% clear aperture is available upon request.
(4). Better bevel is available upon request.
(5).Windows with Dielectric High Reflective Coating , Metallic High Reflective Coating are available.