High Transmittance:
ZnSe exhibits high transmittance in both visible and infrared wavelengths, with a broad transmission range covering wavelengths from 0.5μm to 22μm.
Low Absorption Coefficient:
ZnSe material has a low absorption coefficient and minimal optical transmission loss, making it suitable for high-power laser systems.
High Thermal Resistance:
ZnSe has a high thermal expansion coefficient, allowing it to maintain stability in high-temperature environments.
Uniform Refractive Index:
ZnSe offers excellent uniformity and consistency in its refractive index, making it ideal for applications requiring high-precision optical components.
| Specifications | Commercial spec. | High precision spec. |
| Dimension | 5mm~350mm | |
| Dimension tolerance | ±0.1mm | ±0.05mm |
| Focal length tolerance | ±2% | ±1% |
| Surface quality | 60/40 | 40/20 |
| Centration | < 3 arc min | <1arc min |
| Surface figure | 3λ | 2λ |
| Surface irregularity | 1/4λ | 1/10λ |
| Clear aperture | >85% of dim | >90% of dim |
| Bevel | <0.2mm x 45deg | <0.1mm x 45deg |
| Coating | AR/AR 7-12um / 10.6um / 2-13um | |
| Diameter (mm) | Focal length (mm) | Edge thickness (mm) |
| 12.7 | 25.4 | 1.52 |
| 19.05 | 25.4 | 2.16 |
| 25.4 | 63.5 | 2.16 |
| 25.4 | 127 | 2.59 |
| 25.4 | 254 | 2.82 |
| 27.94 | 63.5 | 2.16 |
| 27.94 | 127 | 4.06 |
| 27.94 | 190.5 | 2.69 |
| 27.94 | 254 | 2.77 |
| 38.1 | 63.5 | 2.03 |
| 38.1 | 63.5 | 2.62 |
| 38.1 | 88.9 | 8.99 |
| 38.1 | 95.25 | 2.18 |
| 38.1 | 127 | 7.11 |
| 38.1 | 127 | 7.62 |
| 38.1 | 190.5 | 7.11 |
| 38.1 | 190.5 | 7.62 |
| 50.8 | 190.5 | 7.62 |
| 50.8 | 190.5 | 7.87 |
| 50.8 | 190.5 | 9.65 |
| 63.5 | 254 | 9.9 |
Applications of ZnSe Lenses
High-Power CO2 Laser Systems:
Used as substrate material for mirrors and beam splitters in high-power laser systems.
Thermal Imaging Systems:
Employed as protective windows and optical elements in forward-looking infrared (FLIR) thermal imaging systems.
Medical Field:
Utilized in biomedical applications, such as beam calibration and thermal radiation measurement instruments.
Industrial Applications:
Serves as windows and lenses in infrared spectrometers and thermal radiation measurement instruments.
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