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Glass Filter

Product Information

Colored and filter glass stands out due to its selective absorption in the visible wavelength range. The filters appear to be colored if their filter effect lies within the visible light spectrum.

SCHOTT, one of the leading filter glass manufacturers with a product range equalled by no other manufacturer world-wide, can provide virtually any size, shape and quality required by the customer. As series supplier, our expertise is available to our customers at all times and we help find the optimal solution to your filter problem.

Our range of glass filters with more than 60 types includes the following filter types in the visible wavelength range from 200 nm upwards:

Band pass filters, which allow required ranges to pass through selectively
Long pass filters, which block unwanted shorter wave ranges
Short pass filters, which block unwanted longer wave ranges
Neutral density filters, which have a virtually constant transparency especially in the visible range
Conversion filters, which due to their spectral range increase or reduce the color temperature of radiation sources

Please also take a look at our Internet pages Contrast Enhancement Filter
und Interferencefilter.

Our filters are divided into the following groups:

	UG	Black and blue glass which permits the transmission of UV light
	BG	Blue, blue-green and band glass
	VG	Green glass
	GG	Yellow glass which permits IR light transmission
	OG	Orange glass which permits IR light transmission
	RG	Red and black glass which permits IR light transmission
	NG	Neutral glass with virtually constant radiation weakening in the visible range
	N-WG	Colorless glass with different cut-off positions in the UV range and which allows IR and visible light transmission
	KG	Virtually colorless glass with high transmission of visible light and absorption of radiation in the IR range
	FG	Blue and brown colored glass (conversion glass)

New Development BG 50 Color Compensating Filter

New Development BG 55 Color Compensating Filter

Applications

Optical glass filters are used in a host of different applications. Optical glass filters are significant components in industrial measurement, control and regulation technology through analytical measuring methods in production, research and development all the way to environment protection and medicine with which to permit or block the transmission of specific spectral ranges. We have listed a number of possible applications below:

"Keep it out of your eyes "

KG3 and KG5, which stand out because of their high transmission of visible light and effective absorption in the infra-red range (especially 1064 nm for Nd:YAG-Laser) are used as components in protective glasses and windows for lasers.

"Cool light in the operating theatre" – KG1 and KG3 in operating lights

The extensive colour neutrality of our heat absorption filters KG1 – KG5 in the visible spectrum prevents colours being falsified in the operating area.

"Seeing in the dark"

Spotlights which are equipped with RG filters only allow IR radiation to be transmitted and when in operation appear black to the observer. Together with cameras sensitive to infra-red radiation, they can be used for monitoring tasks without being noticed.

Materials

Basic glass

Ionically colored glass

Colloidally colored glass

Forms of Supply

Polished filter:

Filters are available as polished plates or round discs with processed edges. Upon request, they are available thermally strengthened and / or with a protective / antireflection coating.

Filter glass prepared:

    - With processed edges
      Rectangular plates and round discs with matt surface and processed edges.

    - Edges not processed
      Rectangular plates and round discs with matt surfaces and edges not processed.

Standard formats with non-processed edges:

Plate sizes 165 mm x 165 mm + 3-0 mm
Plate thickness 3.5 mm ± 0.5 mm and 4.5 mm ± 0.5 mm
(available within a short period of time)

Specifications

Dimensions Minimum thickness	from 1 mm - 480 mm 0.1 mm
Tolerances	Up to 0.001 mm
Surface quality	Up to P 4 in compl. with DIN ISO 10110

Upon request, we can produce any size and thickness required within the framework of the maximum size permitted by the type of glass required.

Further information is available from our data sheets and glass filter catalogue.

Quality Assurance

Filter glass production is subjected to continuous quality control with continuous documentation of the respective production steps. As far as is permitted by the transparency of our glass, the interior quality of our glass is checked for bubbles, smears etc. Powerful top quality measuring devices are then used to perform a final check on the filters.

For more information please contact:

Advanced Optics
SCHOTT North America, Inc.
400 York Avenue
Duryea, PA 18642
USA
Phone: + 1 (570) 457-7485
Fax: + 1 (570) 457-6960

E-mail
www.us.schott.com/optics_devices/

	Business Contact

	Advanced Optics SCHOTT North America, Inc. 400 York Avenue Duryea, PA 18642 USA + 1 (570) 457-7485 + 1 (570) 457-6960 E-mail

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