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SLZS2
Diameter φD
Focal length f
Edge thickness te
Center thickness tc
Back focal length fb
WD
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Zinc selenide (ZnSe) meniscus Lens (ZnSe) is used as a condensing lens with CO2 laser (10.6μm). The meniscus designed shape is optimized to minimize spherical aberration.

◦With anti-reflection coating the loss due to surface reflection can be reduced, and the laser light with high efficiency can be condensed.
◦ZnSe crystal has little hygroscopic, it can be handled in the same way as a normal optical element.
◦Since ZnSe crystal is a isotropic crystal, it does not have birefringence (polarization characteristics).

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

▶We can also provide window plates (OPZS / WZSA) made with ZnSe for CO2.
W3152
▶Please refer to here for Wavelength Characteristic Data (Reference Data, EXCEL file format).

Attention

▶When the high power laser beam is condensed on the surface of ZnSe, due to the thermal decomposition, toxic gas may occur. In addition, a large amount of gas and powder occur when the ZnSe lens is damaged by the laser thermal run-away. If the ZnSe lens is damaged, DO NOT touch the lens by bare hands. Please collect the debris and be careful not to inhale the powder and gas steam generated.
▶Since meniscus lens is a single lens, the focal length will be changed depending on the wavelength.
▶There is a direction to put a light in the Plano convex lens. Please make sure to put the parallel light from the convex side. If it is reserved, the spherical aberration increases, the focused spot becomes large and the image looks blurred.

Common Specifications
MaterialZnSe
Design Wavelength10.6μm
Refractive Index2.403
Centration<3′
CoatingAntireflection coating (Wavelength 10.6μm)
(Diameter of φ25.4mm is wavelength of 650nm and 10.6μm)
Clear aperture90% of the diameter
Surface Quality (Scratch-Dig)20−10
Outline Drawing

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Schematic

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Part Number
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    JP Yen Stock Qty
SLZS2-19.1-38.1PCO2ANEW
SLZS2-19.1-50.8PCO2ANEW
SLZS2-19.1-63.5PCO2ANEW
SLZS2-20-50.8PCO2ANEW
SLZS2-20-63.5PCO2ANEW
SLZS2-25.4-38.1PCO2ANEW
SLZS2-25.4-63.5PCO2ANEW
SLZS2-19-38.1PCO2生産中止
SLZS2-19-50.8PCO2生産中止
SLZS2-19-63.5PCO2生産中止
SLZS2-20-38.1PCO2生産中止
SLZS2-20-50.8PCO2生産中止
SLZS2-20-63.5PCO2生産中止
SLZS2-25.4-38.1PCO2生産中止
SLZS2-25.4-63.5PCO2生産中止

φ19.1mm

38.1mm

2mm

2.85mm

36.6mm

-

φ19.1mm

50.8mm

2mm

2.7mm

48.8mm

-

φ19.1mm

63.5mm

2mm

2.51mm

61.8mm

-

φ20mm

50.8mm

2mm

2.8mm

48.9mm

-

φ20mm

63.5mm

2mm

2.58mm

61.7mm

-

φ25.4mm

38.1mm

3mm

4.52mm

38.6mm

-

φ25.4mm

63.5mm

3mm

3.91mm

60.9mm

-

φ19,05mm

38.1mm

2mm

2.85mm

36.1mm

35.6mm

φ19,05mm

50.8mm

2mm

2.64mm

49.0mm

48.6mm

φ19,05mm

63.5mm

2mm

2.51mm

61.8mm

61.5mm

φ20mm

38.1mm

2mm

2.94mm

36.1mm

35.5mm

φ20mm

50.8mm

2mm

2.7mm

48.9mm

48.5mm

φ20mm

63.5mm

2mm

2.58mm

61.7mm

61.4mm

φ25.4mm

38.1mm

3mm

4.52mm

35.0mm

34.1mm

φ25.4mm

63.5mm

3mm

3.91mm

60.9mm

60.3mm

RoHS  

¥75,000

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US
RoHS  

¥75,000

CONTACT
US
RoHS  

¥75,000

CONTACT
US
RoHS  

¥75,000

CONTACT
US
RoHS  

¥75,000

CONTACT
US
RoHS  

¥75,000

CONTACT
US
RoHS  

¥75,000

CONTACT
US
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