Optical Glass Filters
made of Schott Filter Glass

Optical color glass filters made of SCHOTT optical filter glass are used for many applications in science and industry. They became an industrial standard a long time ago and are required for various technical applications and for professional research. Our delivery program of optical glass filters made by processing unpolished raw optical filter glass material, rolled sheets or block raw materials contains all available SCHOTT optical glass filter types. This way more than 60 different optical glass filter materials are at your continuous disposal. In the following, you will find the principle transmission curves of all optical glass filter materials.

Our substantial assortment contains the following filter types:

The colour glass filter types marked with an asterix (*) have been discontinued. New serial products should not be based on these glass filter materials unless there is a high volume demand. Possibly we may have some remaining stock of these discontinued optical glass filter materials. Please send us your inquiry in such cases.

(Follow the links below to the transmission of each optical glass filter.)

Black- and blue color filter glass with transmission in the ultraviolet range:
UG 1	UG 5	UG 11
Blue and blue-green color filter glass:
BG 3	BG 4*	BG 7	BG 12*
BG 18	BG 20*	BG 23*	BG 24A*
BG 25	BG 26*	BG 28*	BG 34*
BG 36	BG 38	BG 39	BG 40
BG 42
Green color filter glass:
VG 6*	VG 9	VG 14*
Yellow color filter glass:
GG 385*	GG 395	GG 400	GG 420
GG 435	GG 455	GG 475	GG 495
Orange color filter glass:
OG 515	OG 530	OG 550	OG 570
OG 590
Red and black color filter glass with transmission in the infrared range:
RG 9	RG 610	RG 630	RG 645
RG 665	RG 695	RG 715	RG 780
RG 830	RG 850	RG 1000
Neutral filter glass with balanced blocking in the visible range:
NG 1	NG 3	NG 4	NG 5
NG 9	NG 10*	NG 11	NG 12*

Converter application:
Transmission <-> Optical Density

Colorless filter glass with transmission in the ultraviolet range:
WG 225*	WG 280	WG 295	WG 305
WG 320
Heat absorbing filters
KG 1	KG 2	KG 3	KG 4*
KG 5
Blue and brown color shade filters:
FG 3*	FG 13*

Specifications of Optical Glass Filters*

 

Flatness

• Depending on filter material and thickness
• Other on request

Surface Quality

• typ. 80-50 scratch & dig (MIL-0-13830A)
• Other on request

Mechanical Tolerances

• up to ±15µm (depending on material)

Max. Dimensions

• 165mm x 165mm (at small quantities)
• Thickness 0,5mm up to 10mm
  (depending on material)

Coatings

• Additional coatings possible on request
  (depending on material)

Thermal Tempering

• Thermal full tempering at min. 3mm thickness

Manufacturing Capabilities

All listed color glass filters can be individually fabricated to your requirements. Additional coatings, cemented filter combinations, assembling of different color glass filters and glass materials, thermal tempering or CNC-manufacturing of complex shapes are possible and part of our daily production.

Additional optical, thermal and mechanical material specifications are available on request.

*Please consider the "Notes on technical specifications"

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