Anti-reflection Coatings for Industrial Applications, Jos. Schneider Optische Werke GmbH

From any uncoated glass surface, about 4 to 9% of the light is reflected depending on the refractive index difference between air and the glass. The reflection of light not only causes a loss in intensity but also generates ghost images and stray light which reduce the image quality in an optical system.

Schneider Kreuznach offers the choice of several different types of
anti-reflection (AR) coatings that minimize the residual reflection per surface. All filters are available with no coating, with a standard single layer MgF2 coating for the visible wavelength range, or with Schneider’s superior Multi Resistant Coating (MRC). This coating is a broadband multilayer AR coating for the visible wavelength range that is hydro-phobic and features an extreme high resistance to mechanical and environmental stress. Since this process is ‘cold’ it can be applied to heat-sensitive materials such as plastic substrates or polarization filters based on polymer films cemented between protective glasses. In addition, custom specific special coatings are available, e.g. V-coatings that have extremely low residual reflectivity at the optimized wavelength.

Key Features

Intensitive to angle of incidence

Available in mounts
with all common
thread sizes

Absence of vignetting due to large clear aperture

Applications

Machine Vision and other imaging applications

Scientific & research measurement

Technical Specifications
Coating Type	E Single layer MGF₂	MRC Broadband multilayer	Vxxx V-coating
Wavelength range	380 nm - 850 nm	400 nm - 680 nm	optimized at wavelength xxx
Residual reflectivity	1.3 %¹⁾	0.5 %²⁾	0.2 %³⁾
¹⁾ At λ=525 nm, for refractive index of substrate n=1.52 ²⁾ For 420 nm < λ < 640 nm; 1% for full range ³⁾ For optimized wavelength

Please ask us for coatings on any other substrate
to be provided.

Print version
(pdf: 170 kB)

Order Instructions		Ix - Type - Coating - Mount - Size

			IF	mounted filter
			IFG	unmounted filter
			Type	see datasheets for Schneider filters
			Coating	E, MRC, Vxxx (specify optimized wavelength as xxx nm)
			Mount	(IF only): see datasheet for mounts
			Size	for IF: thread of the mount for IFG: diameter in mm

	Call us for OEM versions	Examples: IF - 010 - MRC - SN1 - 25.5 (Schneider filter 010 with MRCcoating, mountd for M 25.5) IFG - 093 - V875 - 30 (unmounted Schneider filter 093 with V-coating optimized for 875 nm, 30 mm diameter).