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SLZS
Edge thickness te
Back focal length fb
Radius of curvature r
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These spherical single lenses are made of zinc selenide. In contrast to other optical materials for infrared wavelengths such as Ge (germanium) or Si (silicon), ZnSe lenses transmit some visible light, facilitating optical axis adjustment (alignment) of infrared laser systems using lower cost He-Ne lasers. Lenses intended for use with CO2 lasers have AR coatings.

◦High powered lasers often emit laser light in the infrared region. Such systems require careful handling, since infrared laser light is invisible. Because of this laser light, preliminary alignment of optical parts in many cases are essential. While zinc selenide transmit some light in the visible spectrum, it allows easier alignment of other optical components.

Important: Treatment of ZnSe optics
ZnSe (Zinc selenide) is Poisonous and harmful substance classified as legal, depending on the specifications, the certificate of delivery may be required for acquisition of Poisonous and harmful substances. In addition, ZnSe Optics disposal after use is prohibited in general.
Lenses that are no longer needed, please return it to us.

However, we only take back products that we supplied. This policy noted is in Japan and other countries may differ in the treatment of ZnSe (Zinc selenide), please contact your local sales office.

Related product
Products
Technical Data
Documents/Downloads
Guide

▶For other focal length and diameter size not listed on the website or in our current catalog, please contact our Sales Division with your request.
▶Please refer to here for Wavelength Characteristic Data (Reference Data, EXCEL file format).

Attention

▶Hydrogen selenium is harmful when it comes in contact with strong acids! Do not immerse the lens in hydrochloric or sulphuric acid.
▶When light is condensed on the surface of ZnSe, the high power laser beam may produce toxic gases due to the thermal decomposition. In addition, a large amount of gas and powder occurs when the ZnSe lens is damaged by the laser thermal runaway. In case of the ZnSe lens is damaged by any chance, DO NOT handle the lens with your bare hands. Collect the debris and be careful not to inhale the powder and gas generated.
▶Please check the “wavelength characteristic of the focal length data” on “Technical Data” for the focal lengths of each wavelength.
▶There is a possibility that the spherical aberration will increase and optical performance of the system will be degraded if use in reverse. The focused spot may enlarge and the image will appear un-focused.

Common Specifications
MaterialZnSe Crystal
TypeOthers
Design Wavelength10.6μm
CoatingBoth side ; Antireflection coating
Transmittance>99%
Centration<3′
Surface Quality (Scratch-Dig)40-20
Diameterφ30mm
Outline Drawing

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Schematic

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Physics

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Typical Transmittance Data

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T: Transmission
Reference Data

Part Number

Catalog PDF

dxf

STP

IGS

SAT

Zemax

SLZS-30-100PCO2

SLZS-30-150PCO2

SLZS-30-200PCO2

SLZS-30-50NCO2

Spec
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Part Number
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    JP Yen Stock Qty
SLZS-30-100PCO2
SLZS-30-150PCO2
SLZS-30-200PCO2
SLZS-30-50NCO2

Plano convex

100mm

2.2mm

98.8mm

140.3mm

Plano convex

150mm

2.5mm

148.8mm

210.5mm

Plano convex

200mm

2.6mm

198.8mm

280.6mm

Plano concave

−50mm

4.6mm

−51.2mm

−70.2mm

RoHS  

¥81,000

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US
RoHS  

¥77,400

CONTACT
US
RoHS  

¥77,400

CONTACT
US
RoHS  

¥99,000

CONTACT
US