Optical Materials

More than 10 years the CSPE designs and makes various optical elements. It specializes in the production of small batches of optical elements with standartd and non-standart optical parameters, dimensions and forms. Our specialists can work out and make for you hight quality optical elements best confoming to your needs and desires or they can qualitalively make elements on basis of your drawings to suit your requirements. The optical elements included into the catalogue are characterized by hight spectral and operational standarts and designed to work in the spectral range 250nm-10µ. Optical elements can be made of different optical materials.

Fused Silica (FS)
Fused silica is an ideal optical material for many applications. It is extremely transparent over a wide spectral range, has a low coefficient of thermal expansion, and is resistant to scratching and thermal shock. When compared with glass or fused quartz, fused silica has a greater UV and IR transmission, wider thermal operating range, much higher resistance to radiation darkening from UV, X-rays and gamma rays. FS components are ideally suited for applications in energy-gathering and imaging systems in the mid-UV, VIS and near-IR spectral ranges. The low dispersion of FS reduces chromatic aberration.

Ultraviolet grade Fused Silica (UVFS)
UV grade fused silica offers both highest transmission (especially in deep-UV) and very low fluorescence levels (approximately 0.1% that of fused natural quartz). In deep-UV applications UV grade fused silica is an ideal choice. Its tight index tolerance assures highly predictable lens, window, prism, etc. specifications. Very low bubble content makes it really unique.

Borosilicate crown glass (BK7)
BK7 is a material used in a large fraction of products. It is relatively hard glass, doesn’t scratch easily and can be handled without special precautions. The inclusion and bubble content of BK7 is very low: cross-section totally less than 0.03 mm2 per 100 cm3. Another important feature of BK7 is its excellent transmission down to 350 nm. Due to these properties, including inexpensiveness, BK7 is used widely throughout the optics industry. Optical quality fused silica (FS), UV grade fused silica (UV FS) and borosilicate crown glass are the materials used in the majority of CSPE optical components. UV grade FS and borosilicate crown glass conform the requirements for Shott Glass SUPRASIL and BK7 respectively. CSPE uses occasionally corresponding glasses made by different glass manufacturers, but only when it does not result in a significant change of optical properties.

Optical Fused Silica Glasses

KU-1 (UV)
Silica glass transparent in the ultraviolet and visible spectral regions without absorption bands in the range of wavelengths 170-250 nm, with an intense absorption band in the range 2.6-2.8 m, no luminescent, radiation and optically resistant.

KUVI
Silica glass transparent in the ultraviolet and visible spectral regions without noticeable absorption bands in the range of wavelengths 170-250 nm, with an insignificant absorption in the range of wavelengths 320-350 nm, with an absorption band in the range 2.6-2.8 m, no luminescent, radiation and optically resistant.

KV
Silica glass transparent in the visible spectral region with a noticeable absorption in the range of wavelengths 170-250 nm and 2.6-2.8 m.

KI (IR)
Silica glass transparent in the visible and infrared spectral regions without a noticeable absorption band in the range of wavelengths 2.6-2.8 m.

Optical Glasses

K8 (BK7)
Optical glass transparent in the spectral range 350 nm - 2.3 m has good properties in respect to mechanical strength and chemical resistance.

LK7
Optical glass transparent in the spectral range 350 nm - 2.3 m has good heat-technological properties.

Glass Ceramic CO115M - Sital (Zerodur)
Glass ceramic with a small or close to zero coefficient of linear heat expansion, is used for optical elements in which the change in the linear dimensions and in the form of the surface is excluded when the temperature changes, can not be used in transmitted light, is used most often for mirrors with reflection > 90%. Optical quality fused silica (FS), UV grade fused silica (UV FS) and borosilicate crown glass are the materials used in the majority of CSPE optical components. UV grade FS and borosilicate crown glass conform the requirements for Shott Glass SUPRASIL and BK7 respectively. CSPE uses occasionally corresponding glasses made by different glass manufacturers, but only when it does not result in a significant change of optical properties.

 

Return to product list
© All rigths reserved by CSPE