ZnSe Infrared Lens
Custom ZnSe Infrared Lens for CO2 Laser Focusing and LWIR Thermal Imaging Systems
ZnSe infrared lens is a precision refractive optical component designed for long-wave infrared transmission. It is widely used in CO2 laser focusing optics, LWIR thermal imaging lenses, infrared detection modules, and defense EO/IR optical assemblies where stable focusing and controlled optical performance are required.
What Is a ZnSe Infrared Lens?
A ZnSe infrared lens is made from zinc selenide substrate and polished into plano-convex, biconvex, spherical, or aspherical lens forms. The lens focuses or images infrared energy while maintaining transmission performance in the LWIR band.
ZnSe is selected for CO2 laser systems because it has low absorption near 10.6um and stable optical homogeneity. For engineering projects, the final lens performance depends on diameter, center thickness, effective focal length, surface figure, centration, coating design, and inspection criteria.
Primary Search Intent
Buyers usually compare ZnSe infrared lenses by focal length, lens structure, coating, thermal load, drawing tolerance, and whether inspection documents can support repeat production.
ZnSe Infrared Lens Materials for CO2 Laser and LWIR Optical Systems
Material selection should follow the wavelength, focusing power, imaging requirement, thermal environment, and cost target of the optical system.
Optical Grade CVD ZnSe
Standard and high-homogeneity CVD ZnSe grades for CO2 laser focusing lenses, LWIR imaging lenses, and precision zinc selenide lens assemblies.
ZnS Alternative
A cost-effective option for selected general infrared imaging systems where the application does not require ZnSe laser focusing performance.
Germanium Lens Option
Used in selected high-resolution ultra-LWIR detection systems where the optical design specifies germanium refractive characteristics.
Sapphire Protective Option
Recommended when the system prioritizes high-temperature resistance or mechanical durability in harsh environments.
Typical ZnSe Infrared Lens Specifications for Custom Drawings
The values below are reference ranges. Final specifications are confirmed from optical drawings and engineering requirements.
CO2 Laser Lens and LWIR Infrared Lens Coating Solutions
Coating design is matched to working wavelength, focal power, incident angle, environment, cleaning method, and expected durability.
IR AR Coating
Minimizes surface reflection and improves useful infrared transmission for dedicated wavelength focusing optics.
IR BBAR Coating
Provides broader anti-reflection performance for multi-wavelength LWIR imaging and thermal detection systems.
DLC Protective Coating
Provides an additional surface protection option where durability and environmental resistance are required.
Custom Infrared Focusing Lens Applications Across Industrial Systems
ZnSe lenses are engineered into laser focusing, thermal imaging, temperature measurement, EO/IR, and medical infrared optical platforms.
LWIR Thermal Imaging
CO2 Laser Focusing
Protected Lens Assemblies
Precision Manufacturing for Zinc Selenide Lens Components
Felix Glass supports custom ZnSe infrared lens projects from lens drawing review to batch inspection, with process control focused on surface quality, focal length consistency, centration, and coating repeatability.
Full-Process Infrared Lens Control
CNC blank forming, spherical and aspherical grinding, infrared-grade polishing, stress control, coating, and optical performance inspection are aligned to the final drawing.
Lens Blank Forming
Ultra-precision CNC forming and contour shaping support custom diameter, center thickness, and edge requirements.
Spherical and Aspherical Polishing
Professional grinding and polishing support plano-convex, biconvex, and custom aspherical ZnSe lens surfaces.
Infrared Coating
High-vacuum sputtering coating supports AR, BBAR, and selected protective designs for infrared optical systems.
Optical Testing
Centration, focal length, transmittance, surface figure, and dimensional checks support batch delivery documentation.
Custom ZnSe Infrared Lens Processing Service
A standardized workflow helps optical engineers and purchasing teams move from lens drawings to stable production lots.
Lens Requirement Evaluation
Review lens structure, diameter, center thickness, EFL, wavelength, tolerance, and operating conditions.
Material and Coating Confirmation
Select standard or high-homogeneity CVD ZnSe and confirm AR, BBAR, or DLC coating requirements.
Prototype Lens Verification
Produce samples when required and verify focal length, surface figure, centration, and transmission performance.
Batch Production and Inspection
Complete mass production with dimensional and optical inspection, protective packaging, and delivery documentation.
Quality Inspection for CO2 Laser Lens and Thermal Imaging Lens Orders
All ZnSe infrared lenses are inspected against confirmed drawings and project standards before delivery. The inspection plan can include dimensional geometry, center thickness, focal length, surface scratch and dig, infrared spectral transmittance, coating uniformity, adhesion, surface figure, centration, and overall optical performance.
- Dimensional geometry, center thickness, and focal length verification
- Surface scratch and dig defect inspection
- Infrared spectral transmittance testing
- Coating uniformity and adhesion testing
- Surface figure, centration, and optical performance calibration
Related Infrared Optical Components and Optical Materials
Build a complete infrared optics topic cluster around ZnSe lenses, matching windows, and material selection knowledge.
ZnSe Infrared Lens FAQ for CO2 Laser and LWIR Projects
What are the common structures of ZnSe infrared lenses?
ZnSe infrared lenses are commonly supplied as plano-convex, biconvex, spherical, and aspherical lenses depending on focusing and imaging requirements.
Why use ZnSe lenses for CO2 laser focusing?
ZnSe has low absorption near the 10.6um CO2 laser wavelength, helping reduce thermal lensing and focal shift during continuous laser operation.
What is the difference between ZnSe lens and germanium lens?
ZnSe is commonly selected for CO2 laser focusing, while germanium is more often used in passive LWIR thermal imaging systems with different design needs.
Do ZnSe aspherical lenses improve imaging quality?
Custom aspherical ZnSe lenses can reduce spherical aberration and support sharper, more uniform infrared imaging compared with traditional spherical designs.
Can special focal lengths and large diameters be customized?
Yes. Diameter, center thickness, focal length, and surface structure can be customized according to optical system drawings.
Are coated ZnSe lenses more durable?
AR and BBAR coatings improve optical transmission, while DLC coating can add surface protection for selected industrial environments.
Get a Custom Quote for ZnSe Infrared Lens Drawings
Upload your optical lens design drawings or specify wavelength, structure, focal length, diameter, coating, and application requirements. Felix Glass engineering support can review the project and provide a custom lens solution evaluation.
- What is your MOQ for custom optical glass and display glass parts?
Felix Glass offers highly flexible MOQ to support client projects, including prototype testing, small batch trial orders and large-volume mass production. All products can be fully customized according to your drawings, tolerances and application standards. Send us your specs to get an accurate price quote within 24 hours.
- Can I get free glass samples for testing before bulk order?
Yes, our FELIX GLASS factory supports sample testing for a wide range of precision optical glass components and assemblies. The lead time for sample production is 3 to 7 working days. Please contact us today to arrange samples and obtain a customized solution that meets your needs.
- What is the production lead time for custom optical glass components?
What is the production lead time for custom optical glass components?
Answer: The lead time for standard samples is 3–7 business days, while mass production takes 15–25 business days, depending on product complexity and order volume. We provide reliable, rapid delivery for orders serving the industrial, medical, automotive, and aerospace sectors. Please submit your project details to receive an accurate delivery schedule.
- Are your optical glass products ISO, CE and RoHS certified?
All FELIX GLASS precision optical glass components comply with ISO quality system standards, as well as CE and RoHS requirements. We provide comprehensive test reports, material certificates, and inspection documentation for customer review. Please feel free to request full certification details and a formal quotation today.
- Do you offer one-stop custom optical glass processing services?
Yes. We provide a full range of in-house processing services, including CNC machining, precision grinding, optical polishing, vacuum coating (AR, AF, AG, IR), tempering, and screen printing. Every step—from raw material to finished product—is carried out within our own facility. Please let us know your requirements, and we will provide you with the most cost-effective solution.
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