Precision optics picture
 
Home / Products / Optical Windows, Light Transmitting Optics

Optical Windows, Light Transmitting Optics

Flat windows made of optical & technical quality glasses

Optical windows are translucent, flat optics, mainly used in technically optical applications. Such kind of optics usually feature a high light transmittance and a low absorption. The optical glasses used for the production of optical windows should be of high quality, in order to keep optical distortions low and to ensure a high imaging performance. If required, for example for demanding imaging applications or precision laser systems, almost all optical windows can be tailored to custom specifications in terms of optical flatness, quality of the surfaces, shape, inner optical quality and of course to custom dimensions. Also customized coatings can be applied to most optical windows, provided the required quantity is large enough for a coating run. We fabricate precision optical windows from almost any of the many high quality optical materials available on the market. The list below shows a selection of the most common glasses, that we use for the fabrication of optical windows. Please follow the links to the respective data-sheets to view detailed technical information about each of the listed materials:

 

Round optical windows,transmissive optics

 

 

Optical Windows:

 

N-BK7 windows

N-BK7 is the industry standard for high-grade optical windows and all kinds of optics like lenses, prisms or optical flats, used in the visible wavelength range. The bor-crown glass has a very high inner quality and contains almost no bubbles or inclusions. Its excellent clarity and uniform light transmission make N-BK7 an ideal choice for high quality optical windows and laser optics. more...

 

Quartz Glass & Fused Silica windows

Amorphous quartz and synthetic fused silica materials are the right choice for optical windows and optics that must provide a high ultraviolet transmissivity and whenever a very high temperature resistance is needed. The low thermal expansion and high purity allow the use of fused silica windows at temperatures of up to 1000°C. Depending on the optical grade selected, fused silica features a high or very high optical quality. Hence, it is often utilized for the manufacturing of high-end optical windows, laser windows and demanding custom optics. more...

 

BOROFLOAT® windows

BOROFLOAT® is a high quality borosilicate glass. It has an increased temperature resistance and can be operated at up to 500 °C. It offers a good optical performance and a high light transmission in the infrared up to approximately 2500 nm, as well as a very good chemical resistance. BOROFLOAT® is often chosen to fabricate optical windows, laboratory optics and not least for various industrial applications. Also it is a standard substrate for various optical front surface mirrors. more...

 

B 270® - Superwite windows

B 270® is a colorless crown glass. It is characterized by a high clarity and a good optical transmissivity. Judged based on optical standards, natural, bare B 270® surfaces only have a moderate optical flatness and surface quality performance, which is in the range of sightglass quality. It is therefore lower than what is required for most optical applications. However, after a mechanical polishing process is applied, optical window optics as well as prisms or optical flats with a very high optical quality can be made of B 270®. more...

 

Selected float windows

This is an economically priced material with very good quality surfaces and a so called "mirror-grade" flatness, which is good enough to be used as a substrates for optical mirrors. We use it for some of our mirror optics and for several of our transmissive standard optical thin film coatings. It offers a good optical transmission from the visible to the infrared and keeps cost under control. Therefore, it is an ideal choice for mass products, that require optical windows with an increased optical quality, as long as the required optical precision is not in the high-end range. The window thickness can be in the range from 0,4 mm to 4 mm. more...

 

 

Thin- and Ultra Thin Optical Windows:

Due to the small thickness of thin and ultra thin windows, there are limitations in regards to the possible optical flatness. Because the possible optical flatness directly depends on the thickness of a material and for such thin glasses, even the own mass has a measureable effect on the flatness, such high flatnesses, that are possible at large thicknesses cannot be achieved with those thin and ultra thin glasses. The optical flatness can even not be specified in most cases. The windows that are produced of the thin glasses listed below, mostly represent the highest possible optical flatness options at such small window thicknesses.

 

D 263 T windows

This is a perfect choice for thin and ultra thin windows. Even at low thicknesses D 263 offers a remarkable flatness and a low warping. It has an outstanding clarity and optical quality. We can manufacture square and rectangle windows from D 263 T with a thickness of only 50 µm. Round and free shapes are possible beginning at approximately 100 µm thickness and above. Windows of D 263 T can be made beginning at 0,05 mm up to 1,10 mm thickness. more...

 

1737F windows

1737F is a low-alkali glass with a very low micro roughness. It has a good optical flatness and a high cosmetic surface quality. It is available at 0,7 mm and 1,1 mm thickness. Due to its excellent optical quality at low thickness, many optical windows and other thin optics are produced of 1737F. more...

 

EAGLE2000 windows

This boro-aluminosilicate material is a lightweight, near-zero-alkali material. It has display-grade-quality which allows it to be utilized for optical windows and optics applications at small material thicknesses of 0,7 mm to 1,1 mm. It is neutral in color and can also be operated at high temperatures. more...

 

MEMpax® windows

MEMpax® is a borosilicate thin glass, that has the same low expansion as known from BOROFLOAT®. It is made by a process that allows a flatness and optical quality surfaces that are better than most mechanical optical polishing processes can achieve. MEMpax® is often utilized for micro-optics and semiconductor windows from 0,2 mm up to 0,5 mm thickness. more...

 

AF 32 eco windows

AF 32® eco is a new thin-glass, that is alkali-free. It is often used for micro-optics, optoelectronics and optical semiconductor window applications. It can be operated at high temperatures of up to 600 °C and offers a high optical transmission and high quality surfaces. The window thickness can be in the range from 0,1 mm to 0,5 mm. more...

 

AS 87 eco windows

AS 87 eco is an ultra thin aluminosilicate material that has a relatively high optical UV-transmittance. It is flexible within certain limits. It is utilized for electronic packaging windows and ultrathin optics. It has a high optical performance and a very low micro roughness and is available at 50µm and 175µm thickness. more...

 

 

Coated Windows:

 

ITO-coated optical windows

ITO-coated windows have a thin, transparent and electrically conductive indium-tin-oxide layer coated on one or two surfaces. The conductive layers on the windows provide EMF-shielding capabilities. But also in science, these coatings are found in various applications. We continously make a large number of different ITO-coated windows and optics. more...

 

Multilayer broadband anti-reflective coated windows

Our anti-reflection coated windows prevent reflections from the surfaces of glasses. They are used to eliminate ghost pictures and to increase the clear view and optical transmission. Our standard anti-reflection coated windows are available based on different material options. more...

 

 

The flat optical windows you are looking for are not listed in this overview?

If you cannot find in this overview the precision-optical windows, optical flats or laser window optics you are looking for, please use our RFQ form, send us your email request, or just contact us by phone. We are manufacturing many other types of optical windows from almost any optical material from SCHOTT or CORNING. Also the manufacturing of windows of sapphire and exotic glasses which are not listed in this summary are part of our capabilities.