Zinc Selenide (ZnSe) Lenses

Products

Specifications

Brochures

Description

Diameter

Focal length

Type

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Plano-Convex

Code	Diameter	Focal length	Type	Price	Delivery	Add to cart
561-6122	ø 12.7 mm	25.4 mm	Plano-Convex	138 $	4 - 5 days
561-6192	ø 19.1 mm	38.1 mm	Plano-Convex	143 $	4 - 5 days
561-6193	ø 19.1 mm	50.8 mm	Plano-Convex	143 $	Request
561-6251	ø 25.4 mm	50.8 mm	Plano-Convex	215 $	Request
561-6252	ø 25.4 mm	63.5 mm	Plano-Convex	215 $	Request
561-6253	ø 25.4 mm	76.2 mm	Plano-Convex	215 $	Request
561-6254	ø 25.4 mm	101.6 mm	Plano-Convex	215 $	Request
561-6255	ø 25.4 mm	127 mm	Plano-Convex	209 $	Request
561-6256	ø 25.4 mm	150 mm	Plano-Convex	209 $	Request
561-6257	ø 25.4 mm	200 mm	Plano-Convex	209 $	4 - 5 days
561-6258	ø 25.4 mm	254 mm	Plano-Convex	209 $	4 - 5 days
561-6265	ø 25.4 mm	500 mm	Plano-Convex	209 $	4 - 5 days
561-6275	ø 25.4 mm	1000 mm	Plano-Convex	209 $	Request
561-6382	ø 38.1 mm	63.5 mm	Plano-Convex	347 $	Request
561-6385	ø 38.1 mm	127 mm	Plano-Convex	339 $	4 - 5 days
561-6388	ø 38.1 mm	190.5 mm	Plano-Convex	339 $	Request
561-6502	ø 50.8 mm	127 mm	Plano-Convex	638 $	4 - 5 days
561-6765	ø 76.2 mm	254 mm	Plano-Convex	1529 $	Request

Meniscus

Code	Diameter	Focal length	Type	Price	Delivery	Add to cart
565-6122	ø 12.7 mm	38.1 mm	Meniscus	237 $	Request
565-6251	ø 25.4 mm	25.4 mm	Meniscus	247 $	4 - 5 days
565-6252	ø 25.4 mm	38.1 mm	Meniscus	247 $	Request
565-6253	ø 25.4 mm	50 mm	Meniscus	239 $	Request
565-6255	ø 25.4 mm	63.5 mm	Meniscus	239 $	Request
565-6256	ø 25.4 mm	75 mm	Meniscus	239 $	Request
565-6257	ø 25.4 mm	100 mm	Meniscus	239 $	Request
565-6258	ø 25.4 mm	127 mm	Meniscus	239 $	Request
565-6382	ø 38.1 mm	63.5 mm	Meniscus	380 $	Request
565-6385	ø 38.1 mm	127 mm	Meniscus	380 $	Request
565-6388	ø 38.1 mm	254 mm	Meniscus	380 $	Request
565-6502	ø 50.8 mm	127 mm	Meniscus	673 $	Request
565-6765	ø 76.2 mm	254 mm	Meniscus	1595 $	Request

Physical Properties

Crystal type	cubic
Density, g/cm³	5.27
Melting point, °C	1525
Refractive index @ 8-13 µm	n = 2.417-2.385
Refractive index @ 10.6 µm	n = 2.403
Transmission band, µm	0.6÷22
Bulk absorption coefficient cm^-1@ 10.6 µm	0.6-1.0×10^-3
Coefficient of linear thermal expansion, °C-¹	8.56×10^-6

Specifications

Material	ZnSe
Surface quality	40-20 scratch & dig (MIL-PRF-13830B)
Diameter tolerance	+0.0 -0.13 mm
Thickness tolerance	±0.1 mm
Focal length tolerance	±2% @ 10.6 µm
Coating	both surfaces AR coated @ 10.6 µm, R ≤ 0.5% per surface

EKSMA Optics Zinc Selenide (ZnSe) Optical Components
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Low absorption in the red end of the visible spectrum
Not hygroscopic
Quite stable in the laboratory environment

Zinc selenide (ZnSe) is the most popular material for infrared applications. Due to a very wide transmission range covering 0.6-22 µm chemical vapor deposition grown ZnSe as a high optical quality material is used to manufacture optical components (windows, mirrors, lenses) for high power IR lasers.