Precision Optics



  BK7 Windows

  Fused Silica Windows

  CaF2 Windows

  Sapphire Windows






Laser Optics

Coloured Optical Glass

IR Materials


Custom Optics


Windows are applied to isolate different physical environments while allowing light to pass. When selecting windows you should consider materials, transmission, scattering, wavefront distortion, parallelism and resistance to certain environment. Dream Lasers offers a wide range of different materials and different degree of precision windows. Special materials are available upon requirement.

Dream Lasers provides varieties of single layer or multilayer anti-reflecting coating on optical windows.


Transmission Range: 330-2100nm

Refractive Index: 1.5164 @ 588nm

Good performance over visible and near IR spectrum for most application.

Transmission Range: 185-2500nm

Refractive Index: 1.4858@308nm

Low Thermal Expansion Coefficient: 0.54 x 10-6K

Better performance from UV to IR spectrum. Also, it is the best choice for resistance thermal application.

Transmission Range: 180-4500nm

Refractive Index: 1.755@1000nm

Strong Hardness

Suit for scratch resistance application with better transmission over the wide range spectrum. It can be made much thinner.

Transmission Range: 170-7800nm

Refractive Index: 1.399@ 5000nm

Little Hygroscopic Susceptibility

High Thermal Expansion Coefficient: 18.85 x 10-6K

It is applicable for wide rang spectrum, and it is particularly useful for excimer laser application.
Please refer to the Material Chapter for more information about Anisotropic synthetic sapphire crystal (Al2O3).
Please refer to Coating Chapter for more infomation of coating.
Other sizes and coatings are available upon request.

Home | Company Profile | Lasers | Optics | Crystals | Support | Contact
Copyright © 2002-2008 by Shanghai Dream Lasers Technology Co., Ltd.