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50.8mm Dia. x 50.8mm FL, Uncoated, ZnSe Aspheric Lens

Name: 50.8mm Dia. x 50.8mm FL, Uncoated, ZnSe Aspheric Lens
Brand: TECHSPEC
SKU: 39-496
Price: £1,944.00 GBP

See More by Coherent®

TECHSPEC Zinc Selenide (ZnSe) Aspheric Lenses

Stock #39-496 6 In Stock Other Coating Options

- +

£1,944.00

Volume Pricing
Qty 1-10	£1,944.00 each
Qty 11-25	£1,740.00 each
Qty 26-49	£1,644.00 each
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Specifications
Product Details
Technical Information
Special Handling
Accessories
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Frequently Purchased Together
Compatible Mounts
Resources

Specifications

General

Type:

Aspheric Lens

Physical & Mechanical Properties

Diameter (mm):

50.80 +0.00/-0.10

Centering (arcmin):

≤3

Centering, ETD (μm):

≤12.7

Clear Aperture CA (mm):

45.72

Edge Thickness ET (mm):

2.08

Center Thickness CT (mm):

6.50 ±0.10

Bevel:

Protective as needed

Shape of Back Surface:

Plano

Surface Roughness (Å):

<50 RMS

Optical Properties

Effective Focal Length EFL (mm):

50.80

Numerical Aperture NA:

0.50

Back Focal Length BFL (mm):

48.10

Coherent® Infrared ZnSe

Asphere Figure Error, RMS @ 632.8nm:

λ/2

Coating:

Uncoated

Surface Quality:

40-20

f/#:

Wavelength Range (nm):

600 - 18000

Conjugate Distance:

Infinite

Power (P-V) @ 632.8nm:

λ/10

Electrical

Power (P-V) @ 10.6μm:

λ/10

Regulatory Compliance

RoHS 2015:

Compliant

Reach 224:

Compliant

Certificate of Conformance:

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Custom

Edmund Optics offers comprehensive custom manufacturing services for optical and imaging components tailored to your specific application requirements. Whether in the prototyping phase or preparing for full-scale production, we provide flexible solutions to meet your needs. Our experienced engineers are here to assist—from concept to completion.

Our capabilities include:

Custom dimensions, materials, coatings, and more
High-precision surface quality and flatness
Tight tolerances and complex geometries
Scalable production—from prototype to volume

Learn more about our custom manufacturing capabilities or submit an inquiry here.

Product Details

Edmund Optics Designed, Coherent® Manufactured
Premier Grade ZnSe Material
Uncoated or Broadband 8-12µm AR Coating Available

TECHSPEC® Zinc Selenide (ZnSe) Aspheric Lenses are designed to provide diffraction-limited focusing performance for 10.6µm CO₂ lasers. Manufactured from Coherent® Infrared ZnSe material featuring <0.0005 cm^-1 bulk absorption at 10.6µm, these lenses are available uncoated or with a broadband anti-reflection coating providing superior transmission from 8 - 12µm. The precision designs are ideal for integration into laser systems, thermal imaging assemblies, and FTIR devices. TECHSPEC Zinc Selenide Aspheric Lenses feature an irregularity of <λ/20 at 10.6µm, 40-20 surface quality, and <50Å surface roughness.

Notes: II-VI Incorporated is now Coherent Corp.

Special care should be taken when handling Zinc Selenide as it is a toxic material. Always wear rubber or plastic gloves to avoid risk of contamination.

Technical Information

Special Handling

These optics require special handling to avoid damage and ensure long-term performance. Proper handling, cleaning, and storage are essential to maintain optical quality. Explore our Optics Cleaning Resources for step-by-step guides and best practices. For personalized assistance, Email us or Chat with our technical support team.