Custom Multi-Spectral ZnSe IR Optical Dome Lens, CVD Zinc Selenide Dome With Broadband AR Coating

 

Felix Glass multi-spectral ZnSe infrared dome lens is a hemispherical multi-band optical protective component built from high-purity CVD polycrystalline zinc selenide crystal. Unlike single-band infrared domes, ZnSe substrate delivers ultra-wide continuous transmission covering visible red light (0.5μm) to long-wave infrared (22μm), supporting simultaneous visible auxiliary alignment and full infrared spectrum detection.

 

Custom multi-spectral broadband anti-reflection coating is deposited on both surfaces to reduce surface reflection loss across all target bands, improve multi-spectrum light transmittance, and provide scratch-resistant protection for soft ZnSe crystal. The hemispherical dome structure provides 180° ultra-wide field of view while isolating internal optical sensors from dust, water vapor and mechanical impact in outdoor industrial environments.

 

 

- Base Material: CVD polycrystalline Zinc Selenide (ZnSe)

- Multi-Spectral Transmission Range: 0.5 μm – 22 μm

- Custom Coating: Broadband multi-spectrum AR coating, tunable for 3–5μm / 8–14μm / 10.6μm CO₂ laser

- Average Transmittance: >91% across customized target spectrum band

- Single-Surface Reflectance: <1.1% within working wavelength range

- Structural Form: Full hemispherical dome lens, custom inner/outer radius

- Thickness Range: 1.5mm ~ 10mm customizable

- Surface Quality: Standard 60-40 scratch-dig, upgradeable to 40-20 high precision

- Laser Damage Threshold: High resistance for continuous low-power CO₂ laser monitoring

- Field of View: 180° wide-angle multi-spectrum detection coverage

 

 

1. Unique multi-spectral transmission property of ZnSe, compatible with visible alignment light + full infrared spectrum simultaneously, one dome satisfies dual-spectrum system demands

2. Customizable multi-band AR coating, matched to thermal imaging, CO₂ laser or multi-spectral detection wavelength requirements

3. Hemispherical 180° wide-angle design eliminates infrared detection blind zones for vehicle and industrial thermal sensors

4. Superior large-size forming capability compared with germanium (Ge) dome, supports ultra-large diameter dome customization

5. Balanced thermal stability and optical performance, works stably in -40℃ ~ +130℃ variable temperature environments

6. Fully customizable outline, radius, edge chamfer and coating spectrum to match customer multi-spectrum optical system drawings

 

 

- Dual-spectrum vehicle night vision thermal imaging cameras

- Multi-band industrial infrared temperature measurement equipment

- CO₂ laser processing monitoring optical protective windows

- Security multi-spectrum perimeter thermal detection systems

- Laboratory infrared Fourier transform spectrometers

- Aerial multi-spectral infrared detection sensors

 

 

We provide full one-stop CVD ZnSe optical processing including large crystal blank cutting, ultra-precision hemispherical polishing, multi-spectral broadband AR coating, edge chamfer finishing, strict multi-wavelength spectral transmittance testing and surface quality inspection.

Prototype sampling, small-batch trial production and mass manufacturing are supported. Each multi-spectral ZnSe dome lens is fully tested to meet customer-specified spectral, dimensional and coating requirements before delivery.

 

 

CVD ZnSe substrate transmits 0.5–22μm continuous spectrum, supporting simultaneous visible light auxiliary alignment and full infrared detection; custom multi-band AR coating further improves transmittance for target wavelengths like 8–14μm thermal imaging and 10.6μm CO₂ laser.

Germanium cannot transmit visible light, while ZnSe achieves visible + infrared dual-spectrum transmission; ZnSe also has better thermal shock resistance and larger-size forming capacity for wide-field dome structures.

Yes, we support custom dome radius, thickness, edge shape, and multi-band AR coating optimized for any target spectrum range to fit different multi-spectrum optical equipment.

It matches dual-spectrum vehicle night vision cameras, industrial multi-band thermal detectors, CO₂ laser monitoring windows and laboratory multi-spectral spectrometers.

We offer prototype sampling, small trial batches and large-scale manufacturing, all ZnSe dome lenses pass full multi-wavelength spectral and surface quality inspection before shipment.