Customized Optical Filter Glass

60 SCHOTT Optical Filter Glass Types in Stock
No Minimum Order Quantity for Both Standard and Custom Dimensions
Build-to-Print Manufacturing and Full-Custom Design
Rapid Turnaround for Prototypes

Overview

ITOS, the German manufacturing site of Edmund Optics^®, offers optical filter glass in customized shapes, sizes from 4-160mm, and at various thicknesses. Utilizing state-of-the-art production equipment and an extensive inventory of the entire range of SCHOTT Optical Filter Glass, including a large selection of raw glass plates, allow for rapid delivery of small quantities of customized filters. This DIN ISO 9001:2015 certified manufacturing facility guarantees reliability and quality in volume production. ITOS also supports analysing your filter and providing you the required properties.

Contact us today to speak with an expert or to request a quotation.

Capabilities

Choose from 59 different types of filter glasses to match the spectral requirements of your application. Whether you require small quantities for prototyping or build-to-print manufacturing for OEM systems, or simply need to define the filter specifications, we have the capabilities to cut and polish optical filter glass to ensure the success of your project.

Optical Filter Glass Capabilities
Dimensions	Ø 3 to 160mm or 2 x 2mm to 160 x 160mm
Dimensional Tolerances	For ≥ 2 – 49mm: ±0.2mm, for ≥ 50 – 99mm: ±0.3mm, for ≥ 100 – 160mm: ±0.4mm
Thickness	0.5 – 4.0mm
Thickness Tolerances	For ≤ 1mm: ± 0.1mm, for > 1 – 4mm: ± 0.2mm
Surface Finish*	P2
Form Errors, Planarity*	3/10-15 for diameters up to 50mm
Surface Defects*	For ≥ 2 – 49mm: 5/3 x 0.63mm, for ≥ 50 – 160mm: 5/4 x 0.63mm
Parallelism*	3 arcmin
Edges & Bevels	Round parts ≥ Ø5mm: polished edges & protective bevel Square & rectangular parts < 50 x 50mm: polished edges, no bevel
Edge Chips	For ≤ Ø80mm: < 0.3mm (5/E0.3), for ≥ Ø81mm < 0.6mm (5/E0.6)

*Specifications per DIN ISO 10110. Manufacturing specifications per MIL-PRF-13830B also available.

OPTICAL FILTERS SELECTION GUIDE

Color glass optical filters operate through absorption rather than the application of coatings. Many types of color glass filters are available including bandpass, shortpass, longpass, neutral density, heat absorbing, and multiband filters. Click below to learn more about different types of optical filters:

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Custom Options & Available Dimensions and Tolerances

SCHOTT Optical Filter Glass Types Available for Customization
BG3	BG60	VG9	GG395	GG495	RG695
BG7	BG61	VG20	GG400	OG515	RG715
BG18	BG62	UG1	GG420	OG530	RG9
BG25	BG63	UG5	GG435	OG550	RG780
BG38	BG64	UG11	GG455	OG570	RG830
BG39	BG67	BG36	GG475	OG590	RG850
BG40	RG1000	N-WG280	KG5	RG610	NG5
BG42	KG1	N-WG295	NG1	RG630	NG9
BG50	KG2	N-WG305	NG3	RG645	NG11
BG55	KG3	N-WG320	NG4	RG665
General Information SCHOTT Optical Filter Glass
UG	Black and blue glasses, UV transmitting
BG	Blue, blue-green, and multiband glasses
VG	Green glasses
GG	Nearly colorless to yellow glasses, IR transmitting
OG	Orange glasses, IR transmitting
RG	Red and black glasses, blocking visible, IR transmitting
NG	Neutral density glasses with uniform attenuation in the visible range
WG	Colorless glasses with different cut-offs in the UV, transmitting in the visible and IR ranges
KG	Virtually colorless glasses with high transmission in the visible and absorption in the IR

>Additional Custom Options Available

Neutral density filters are designed for a certain density/transmission at a reference wavelength
Cemented colour glass combinations
Photometric measurement reports

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Manufacturing Equipment

State-of-the-Art Single- & Double-Sided Polisher
High-Precision Diamond Saw
Bevelling Machine
CNC Centering Machine
Waterjet Cutter
Laser Engraver

Metrology

Spectrophotometers
Zygo^® Interferometer
Measuring Microscope
Digital Measuring Projector

Products

SCHOTT NG Absorptive Neutral Density (ND) Filters

SCHOTT KG Heat Absorbing Glass

Longpass Glass Color Filters

Colored Glass Bandpass Filters

FAQs

How do I find the correct SCHOTT colored glass filter for my application?

1.) Select the desired spectral characteristics for your filter. Edmund Optics offers SCHOTT longpass, shortpass (heat absorbing), bandpass, and neutral density filters.

2.) Define the required wavelengths for the application. Specifically, determine which wavelengths should be blocked (absorbed) and which wavelengths should be transmitted through the filter.

3.) Choose the required dimensions (including thickness and tolerances) and the mechanical specifications (unpolished, polished, or hardened).

4.) Edmund Optics offers a wide variety of standard SCHOTT colored glass filters, in stock and available for immediate delivery. If your application requires a simple modification to a filter’s size, our Colored Filter Glass Pricing Tool is available for rapid customization. We also offer full customization services for all SCHOTT colored glass filter types.

Are SCHOTT NG Gray Glass Neutral Density (ND) Filters suitable for absorbing visible light in defined steps?

Edmund Optics offers SCHOTT NG Filter glass types in two distinct families. The SCHOTT NG Gray Glass Neutral Density Filters are designed for applications where the thickness of the filter is critical. While these filters will provide consistent transmission values from 400 - 700nm, variations in filter lot manufacturing may lead to variations in transmission from filter to filter.

If your application requires a specific transmission (optical density), Edmund Optics also offers SCHOTT NG Absorptive Neutral Density Filters. Each lot of these filters is measured and the thickness is adjusted to meet the specified transmission value at 546nm. Each filter is then polished to a ±0.05mm thickness tolerance to guarantee consistent performance. Variations in filter lot performance can result in variations in nominal thickness; however, the transmission variations between lots will be minimal. All SCHOTT NG filter types can be customized for your specific requirements.

Do all SCHOTT Colored Glass Filters have a chamfer?

Dimensions >50mm are delivered with a protective chamfer. Dimensions ≤50mm (round or square) are supplied without a chamfer but a chamfer can be applied upon request.

Does Edmund Optics supply colored glass filters from other manufacturers?

Edmund Optics works with a variety of glass manufacturers worldwide and is able to support a wide range of colored glass materials. What’s more, our ITOS Manufacturing facility in Mainz, Germany has an extensive selection of SCHOTT material in stock and available for rapid customization and delivery. There may be substantial lead times for any colored glass materials from manufacturers other than SCHOTT.

Is KG range glass (i.e. KG1, KG2, KG3, KG5) suitable for use as laser protection? Am I able build my own laser safety eyewear using these filters?

Edmund Optics does not recommend that anyone build their own laser safety eyewear from the filters we offer. There are a number of global standards, including ANSI Z136, and EN 207/EN 208/60825 that should be strictly adhered to when manufacturing laser safety equipment. However, Edmund Optics does offer a wide range of Laser Safety Eyewear available for purchase. Always work with your organization’s laser safety officer to determine the required level of eye protection.