ZnSe Aspheric Lens
ZnSe Aspheric Lenses are precision aspheric lenses in zinc selenide (ZnSe), a material with low absorption and high transmission across the infrared spectrum including the 10.6 μm CO2 laser wavelength, correcting spherical aberration within a single optical element. Chenyu Optics manufactures ZnSe aspheric lenses, along with BK7, fused silica, optical glass and other infrared materials as applicable, with custom focal length, diameter, surface quality and coating according to customer drawings.
ZnSe Aspheric Lens Overview
ZnSe Aspheric Lenses are precision aspheric lenses in zinc selenide (ZnSe), a material with low absorption and high transmission across the infrared spectrum, including the 10.6 μm CO2 laser wavelength, correcting spherical aberration within a single optical element.
Compared with conventional visible-range lens materials, ZnSe combines infrared transmission with sufficient visible-light transmission to allow visual alignment, making it a standard choice for CO2 laser focusing optics and infrared imaging systems where a single aspheric element replaces multiple spherical elements.
Chenyu Optics supports custom ZnSe aspheric lens manufacturing according to customer drawings, including custom focal length, diameter, thickness, surface quality and coating for prototype and repeat production.
Key Advantages of ZnSe Aspheric Lens
CO2 Laser, Infrared Imaging & Beam Shaping Systems
ZnSe aspheric lenses are widely used in CO2 laser cutting and marking systems, infrared imaging optics, beam shaping assemblies and scientific instruments requiring aberration-corrected infrared focusing performance.
Typical Specifications of ZnSe Aspheric Lens
| Material | Zinc Selenide (ZnSe) |
|---|---|
| Coating Options | Uncoated, broadband AR, laser AR, UV AR, IR AR, custom coating |
| Optical Function | Aberration-corrected infrared focusing / positive focal length |
| Focal Length | Custom, according to customer drawing |
| Surface Accuracy | Up to λ/10 @ 633 nm; aspheric profile accuracy per drawing |
| Surface Quality | 20-10, 40-20 scratch-dig |
| Dimensions | Custom diameter and thickness available |
| Edge Treatment | Ground, chamfered or polished |
Aspheric Profile / CO2 Laser
Why Choose Chenyu Optics for ZnSe Aspheric Lens
Chenyu Optics focuses on drawing-based precision lens manufacturing for laser, imaging and machine vision optical systems. We support prototype verification, small-batch production and repeat manufacturing for non-standard ZnSe aspheric lenses.
Manufacturing Capability for ZnSe Aspheric Lens
Precision Aspheric Figuring & Polishing
Controlled aspheric surface figuring and polishing of ZnSe for profile accuracy, surface quality and optical performance.
AR Coating
Broadband, laser, UV or IR AR coatings selected according to wavelength and application requirements, including CO2 laser AR coatings.
Inspection & Packaging
Profile inspection, focal length verification, optical performance checking and clean protective packaging before shipment.
Custom Manufacturing Options for ZnSe Aspheric Lens
Geometry & Dimensions
Diameter, thickness, focal length and edge treatment can be manufactured according to customer drawings and optical system requirements.
Surface & Profile Quality
Surface accuracy, surface quality and aspheric profile accuracy can be selected according to laser or imaging application requirements.
Coating Selection
Uncoated, broadband AR, laser AR, UV AR or IR AR coatings can be specified according to the operating wavelength and application environment, including CO2 laser wavelength coatings.
ZnSe Material Comparison
| ZnSe | Germanium | BK7 / Fused Silica | |
|---|---|---|---|
| Transmission Range | Visible into far infrared, including 10.6 μm CO2 laser wavelength | Infrared only, no visible transmission | Ultraviolet through near-infrared; no far-infrared transmission |
| Optical Properties | Low absorption at CO2 laser wavelength, moderate refractive index | High refractive index, higher thermal sensitivity | Standard visible-range optical glass properties |
| Typical Use | CO2 laser focusing, infrared imaging with visual alignment | Thermal imaging and infrared systems without visible alignment needs | Visible-range imaging, general-purpose laser and imaging systems |
| Selection Note | Preferred for CO2 laser systems and applications needing visible alignment | Preferred for infrared-only systems where visible transmission is not required | Preferred for visible-range and standard laser/imaging applications |
Applications of ZnSe Aspheric Lens
CO2 Laser Systems
Focusing and beam shaping optics for CO2 laser cutting, marking and welding systems.
Infrared Imaging Systems
Aberration-corrected lenses for infrared imaging optics.
Beam Shaping
ZnSe aspheric lenses for infrared beam collimation and focusing applications.
Machine Vision
Reliable, aberration-corrected focusing components for infrared machine vision systems.
Scientific Instruments
Precision infrared optical components for laboratory and research instruments.
Optical Systems Integration
Custom ZnSe aspheric lenses for OEM CO2 laser and infrared assemblies.
ZnSe Aspheric Lens FAQ
What is a ZnSe aspheric lens?
A ZnSe aspheric lens is an aspheric lens made from zinc selenide, a material with low absorption and high transmission across the infrared spectrum, including the CO2 laser wavelength.
Why is ZnSe used for CO2 laser optics?
ZnSe has low absorption at the 10.6 μm CO2 laser wavelength and transmits enough visible light to allow visual alignment, making it a standard material for CO2 laser lenses.
Are other materials available for aspheric lenses?
Yes. In addition to ZnSe, Chenyu Optics offers aspheric lenses in BK7, fused silica, optical glass and other infrared materials as applicable.
Can ZnSe aspheric lens coatings be customized?
Yes. Coating options include uncoated, broadband AR, laser AR, UV AR, IR AR and custom coatings, including coatings optimized for the CO2 laser wavelength.
What information should I provide for a quotation?
Please provide diameter, thickness, focal length, coating type, surface quality, surface accuracy, quantity and drawing if available.
Where can I learn more about ZnSe optics and coatings?
Additional information on ZnSe optics and infrared AR coatings can be found from Edmund Optics.
Related Products for ZnSe Aspheric Lens
Need Custom ZnSe Aspheric Lenses?
Send us your drawing, dimensions, focal length and coating requirements. Chenyu Optics will review the optical specifications and provide a suitable ZnSe aspheric lens manufacturing suggestion.