Create an Account  |   Log In

View All »Matching Part Numbers


Your Shopping Cart is Empty
         

Zinc Selenide Plano-Convex Lenses, AR Coated: 2 - 13 µm


  • AR Coating Optimized for the 2 - 13 µm Range
  • Choose from Ø1/2'' or Ø1'' Sizes
  • Suitable for CO2 Laser and IR Imaging Applications

LA7477-E4

Ø1/2'' Lens

f = 15 mm

LA7542-E4

Ø1'' Lens

f = 25.4 mm

LA7753-E4

Ø1'' Lens

f = 1000 mm

Related Items


Please Wait
Specifications
Substrate Material Zinc Selenidea
AR Coating Range 2.0 - 13.0 μm
Reflectanceb (Per Surface) Ravg < 3.5%
Rabs < 6%
Transmissionb Tavg > 92%
Tabs > 85%
Diameter Tolerance +0.0/-0.1 mm
Thickness Tolerance ±0.1 mm
Focal Length Tolerance ±1%
Surface Quality 60-40 Scratch-Dig
Surface Flatnessc (Plano Side) λ/2
Spherical Surface Powerc,d (Convex Side) 3λ/2
Surface Irregularityc (Peak to Valley) λ/2
Centration <3 arcmin
Clear Aperture Ø1/2" Lenses: >Ø10.2 mm
Ø1" Lenses: >Ø20.3 mm
Design Wavelength 10.6 μm
  • Click the link for detailed specifications on the substrate.
  • Over AR Coating Range, 0° AOI
  • At 633 nm.
  • Much like surface flatness for flat optics, spherical surface power is a measure of the deviation between the surface of the curved optic and a calibrated reference gauge, typically for a 633 nm source, unless otherwise stated. This specification is also commonly referred to as surface fit.
Zemax Files
Click on the red Document icon next to the item numbers below to access the Zemax file download. Our entire Zemax Catalog is also available.
Optic Cleaning Tutorial

Features

  • ZnSe Substrate
  • Ø1/2" and Ø1" Versions Available
  • Broadband AR Coating for the 2 - 13 μm Range
  • Focal Lengths from 15 mm to 1000 mm Available
  • Transmissive for Red Alignment Lasers

Thorlabs' Ø1/2" and Ø1" Zinc Selenide (ZnSe) Plano-Convex Lenses are available with a broadband antireflection (AR) coating optimized for the 2 µm to 13 μm spectral range deposited on both surfaces. This coating greatly reduces the high surface reflectance of the substrate, yielding an average transmission in excess of 92% over the entire AR coating range. See the Graphs tab for detailed information.

ZnSe lenses are commonly used in IR imaging, biomedical, and military applications. The lenses below are also particularly well suited for use with high-power CO2 lasers. Additionally, they provide enough transmission in the visible region to allow the use of a red alignment beam.

Usage
To minimize the introduction of spherical aberrations, light should be bent gradually as it propagates through the lens. Therefore, when using a plano-convex lens to focus a collimated light source, the collimated light should be incident on the curved surface. Similarly, when collimating a point source of light, the diverging light rays should be incident on the planar surface of the lens.

This substrate scratches easily and should be handled with care. When handling optics, always wear gloves. This is especially true when working with zinc selenide, as it is a hazardous material. For your safety, please follow all proper precautions. For the MSDS for ZnSe in English, click here, and for the MSDS in Japanese, click here. Thorlabs will accept all ZnSe windows back for proper disposal. Please contact Tech Support to make arrangements for this service.

Optical Coatings Guide
Lens Tutorial
Selection Guide
Zinc Selenide Lenses
AR Coated Zinc Selenide Window Transmission
Click to Enlarge
Click for Raw Data
This graph shows the measured transmission of an AR-coated zinc selenide window (Item # WG71050-E4) at normal incidence. The shaded region denotes the AR coating range, over which Tavg > 92%. Performance outside of the specified range is not guaranteed and varies from lot to lot.
AR-Coated Zinc Selenide Reflectance
Click to Enlarge
Click for Raw Data
This plot gives the measured reflectance (per surface) at an 8° angle of incidence (AOI) of our -E4 AR-coated zinc selenide substrates. The average reflectance is <3.5% per surface within the shaded wavelength range of 2.0 - 13.0 µm.
CXY1 in 30 mm Cage System
Click to Enlarge
CXY1 Translation Mount and
SM1 Lens Tube Mounted in a
30 mm Cage System
Threaded Mounting Adapter
Click to Enlarge
Ø1" Optic Mounted in a
ST1XY-S XY Translator

Click to Enlarge
LMR1 Fixed Mount with Ø1" Lens

Click to Enlarge
LM2XY Translating Mount with Ø2" Lens
Recommended Mounting Options for Thorlabs Lenses
Item # Mounts for Ø2 mm to Ø10 mm Optics
Imperial Metric
(Various) Fixed Lens Mounts and Mini-Series Fixed Lens Mounts for Small Optics, Ø5 mm to Ø10 mm
(Various) Small Optic Adapters for Use with Standard Fixed Lens Mounts, Ø2 mm to Ø10 mm
Item # Mounts for Ø1/2" (Ø12.7 mm) Optics
Imperial Metric
LMR05 LMR05/M Fixed Lens Mount for Ø1/2" Optics
MLH05 MLH05/M Mini-Series Fixed Lens Mount for Ø1/2" Optics
LM05XY LM05XY/M Translating Lens Mount for Ø1/2" Optics
SCP05 16 mm Cage System, XY Translation Mount for Ø1/2" Optics
(Various) Ø1/2" Lens Tubes,
Optional SM05RRC Retaining Ring for High-Curvature Lenses (See Below)
Item # Mounts for Ø1" (Ø25.4 mm) Optics
Imperial Metric
LMR1 LMR1/M Fixed Lens Mount for Ø1" Optics
LM1XY LM1XY/M Translating Lens Mount for Ø1" Optics
ST1XY-S ST1XY-S/M Translating Lens Mount with Micrometer Drives (Other Drives Available)
CXY1 30 mm Cage System, XY Translation Mount for Ø1" Optics
(Various) Ø1" Lens Tubes,
Optional SM1RRC Retaining Ring for High-Curvature Lenses (See Below)
Item # Mount for Ø1.5" Optics
Imperial Metric
LMR1.5 LMR1.5/M Fixed Lens Mount for Ø1.5" Optics
(Various) Ø1.5" Lens Tubes,
Optional SM1.5RR Retaining Ring for Ø1.5" Lens Tubes and Mounts
Item # Mounts for Ø2" (Ø50.8 mm) Optics
Imperial Metric
LMR2 LMR2/M Fixed Lens Mount for Ø2" Optics
LM2XY LM2XY/M Translating Lens Mount for Ø2" Optics
CXY2 60 mm Cage System, XY Translation Mount for Ø2" Optics
(Various) Ø2" Lens Tubes,
Optional SM2RRC Retaining Ring for High-Curvature Lenses (See Below)
Item # Adjustable Optic Mounts
Imperial Metric
LH1 LH1/M Adjustable Mount for Ø0.28" (Ø7.1 mm) to Ø1.80" (Ø45.7 mm) Optics
LH2 LH2/M Adjustable Mount for Ø0.77" (Ø19.6 mm) to Ø2.28" (Ø57.9 mm) Optics
VG100 VG100/M Adjustable Clamp for Ø0.5" (Ø13 mm) to Ø3.5" (Ø89 mm) Optics
SCL03 SCL03/M Self-Centering Mount for Ø0.15" (Ø3.8 mm) to Ø1.77" (Ø45.0 mm) Optics
SCL04 SCL04/M Self-Centering Mount for Ø0.15" (Ø3.8 mm) to Ø3.00" (Ø76.2 mm) Optics
LH160C LH160C/M Adjustable Mount for 60 mm Cage Systems,
Ø0.50" (Ø13 mm) to Ø2.00" (Ø50.8 mm) Optics
SCL60C SCL60C/M Self-Centering Mount for 60 mm Cage Systems,
Ø0.15" (Ø3.8 mm) to Ø1.77" (Ø45.0 mm) Optics

Mounting High-Curvature Optics

Thorlabs' retaining rings are used to secure unmounted optics within lens tubes or optic mounts. These rings are secured in position using a compatible spanner wrench. For flat or low-curvature optics, standard retaining rings manufactured from anodized aluminum are available from Ø5 mm to Ø4". For high-curvature optics, extra-thick retaining rings are available in Ø1/2", Ø1", and Ø2" sizes.

Extra-thick retaining rings offer several features that aid in mounting high-curvature optics such as aspheric lenses, short-focal-length plano-convex lenses, and condenser lenses. As shown in the animation to the right, the guide flange of the spanner wrench will collide with the surface of high-curvature lenses when using a standard retaining ring, potentially scratching the optic. This contact also creates a gap between the spanner wrench and retaining ring, preventing the ring from tightening correctly. Extra-thick retaining rings provide the necessary clearance for the spanner wrench to secure the lens without coming into contact with the optic surface.


Posted Comments:
No Comments Posted

Ø1/2" ZnSe Plano-Convex Lenses

Item # Diameter Focal Length Dioptera Radius of Curvature Edge Thicknessb Center Thickness Back Focal Length Reference
Drawing
LC7477-E4 12.7 mm 15.0 mm +66.7 21.0 mm 2.0 mm 3.0 mm 13.8 mm Plano-Concave Lens Drawing
LC7733-E4 12.7 mm 20.0 mm +50.0 28.1 mm 2.0 mm 2.7 mm 18.9 mm
LC7673-E4 12.7 mm 40.0 mm +25.0 56.1 mm 2.0 mm 2.4 mm 39.0 mm
  • Reciprocal of the Focal Length in Meters
  • Edge Thickness Value is Given Before the 0.2 mm Losses Due to Each 45° Typical Chamfer

Suggested Fixed Lens Mount: LMR05(/M) or MLH05(/M)

Based on your currency / country selection, your order will ship from Newton, New Jersey  
+1 Qty Docs Part Number - Universal Price Available
LA7477-E4 Support Documentation
LA7477-E4Ø1/2" ZnSe Plano-Convex Lens, f = 15 mm, AR-Coated: 2-13 µm
$225.00
Today
LA7733-E4 Support Documentation
LA7733-E4Ø1/2" ZnSe Plano-Convex Lens, f = 20 mm, AR-Coated: 2-13 µm
$225.00
Today
LA7673-E4 Support Documentation
LA7673-E4Ø1/2" ZnSe Plano-Convex Lens, f = 40 mm, AR-Coated: 2-13 µm
$225.00
Today

Ø1" ZnSe Plano-Convex Lenses

Item # Diameter Focal Length Dioptera Radius of Curvature Edge Thicknessb Center Thickness Back Focal Length Reference
Drawing
LA7542-E4 25.4 mm 25.4 mm +39.4 35.6 mm 2.0 mm 4.3 mm 23.6 mm Plano-Concave Lens Drawing
LA7656-E4 25.4 mm  50.1 mm +20.0 70.2 mm 2.8 mm 4.0 mm 48.4 mm
LA7660-E4 25.4 mm 75.0 mm +13.3 105.2 mm 3.2 mm 4.0 mm 73.0 mm
LA7261-E4 25.4 mm 100.2 mm +10.0 140.5 mm 3.4 mm 4.0 mm 98.5 mm
LA7028-E4 25.4 mm 149.0 mm +6.7 209.0 mm 3.6 mm 4.0 mm 147.3 mm
LA7228-E4 25.4 mm 200.0 mm +5.0  280.5 mm 3.7 mm 4.0 mm 199.3 mm
LA7270-E4 25.4 mm 500.0 mm +2.0 701.3 mm 2.0 mm 2.1 mm 499.1 mm
LA7234-E4 25.4 mm 750.0 mm +1.3 1052.0 mm 2.0 mm 2.1 mm 749.1 mm
LA7753-E4 25.4 mm 1000.0 mm +1 1402.7 mm 2.0 mm 2.1 mm 999.1 mm
  • Reciprocal of the Focal Length in Meters
  • Edge Thickness Value is Given Before the 0.2 mm Losses Due to Each 45° Typical Chamfer

Suggested Fixed Lens Mount: LMR1(/M)

Based on your currency / country selection, your order will ship from Newton, New Jersey  
+1 Qty Docs Part Number - Universal Price Available
LA7542-E4 Support Documentation
LA7542-E4Ø1" ZnSe Plano-Convex Lens, f = 25.4 mm, AR-Coated: 2-13 µm
$409.00
Today
LA7656-E4 Support Documentation
LA7656-E4Ø1" ZnSe Plano-Convex Lens, f = 50 mm, AR-Coated: 2-13 µm
$409.00
Today
LA7660-E4 Support Documentation
LA7660-E4Ø1" ZnSe Plano-Convex Lens, f = 75 mm, AR-Coated: 2-13 µm
$409.00
Today
LA7261-E4 Support Documentation
LA7261-E4Ø1" ZnSe Plano-Convex Lens, f = 100 mm, AR-Coated: 2-13 µm
$409.00
Today
LA7028-E4 Support Documentation
LA7028-E4Ø1" ZnSe Plano-Convex Lens, f = 150 mm, AR-Coated: 2-13 µm
$409.00
Today
LA7228-E4 Support Documentation
LA7228-E4Ø1" ZnSe Plano-Convex Lens, f = 200 mm, AR-Coated: 2-13 µm
$409.00
Today
LA7270-E4 Support Documentation
LA7270-E4Ø1" ZnSe Plano-Convex Lens, f = 500 mm, AR-Coated: 2-13 µm
$409.00
Today
LA7234-E4 Support Documentation
LA7234-E4Ø1" ZnSe Plano-Convex Lens, f = 750 mm, AR-Coated: 2-13 µm
$409.00
Today
LA7753-E4 Support Documentation
LA7753-E4Ø1" ZnSe Plano-Convex Lens, f = 1000 mm, AR-Coated: 2-13 µm
$409.00
Today
Additional ZnSe Plano-Convex Spherical Lenses
  • ZnSe, -E2 Coated

  • ZnSe, -E3 Coated

  • ZnSe, -E4 Coated

    • Log In  |   My Account  |   Contact Us  |   Careers  |   Privacy Policy  |   Home  |   FAQ  |   Site Index
    Regional Websites: West Coast US | Europe | Asia | China | Japan
    Copyright © 1999-2021 Thorlabs, Inc.
    Sales: 1-973-300-3000
    Technical Support: 1-973-300-3000


    High Quality Thorlabs Logo 1000px:Save this Image