Zinc Selenide Aspheric Lenses — GLH7AL1 Series
From $1069 USD
Request a quoteProduct description
GLH7AL1 aspheric lenses are made from CVD laser-grade zinc selenide (ZnSe), with a design wavelength of 4 μm. Aspheric surfaces correct spherical aberration; a single-element design can reduce the number of lenses required in an optical assembly.
Applications listed by the source include laser-diode collimation, barcode scanning and OEM research integration. ZnSe substrates are used for infrared applications; select the design wavelength and coating that match the optical system.
Available coatings are uncoated or IR1 antireflection coating, with source-specified average reflectance <1.5% over 3–5 μm. S1 radius and numerical aperture are retained for every model.
Schematic
Dimensions in mm unless otherwise stated.
The source recommends gloves, avoiding direct contact and washing hands after handling ZnSe. Its low hardness calls for careful handling to avoid surface damage. Reference illustrations are not machining drawings.
The source supplies both current and older IR1 reflectance charts. Their curves differ and are retained as references; model coating specifications take precedence. The older chart title is cropped in the source image and remains unchanged.
Some older supplemental curve images are unavailable on the source site. Available transmission and coating charts are retained in their original order; no replacement curve is generated.
General specifications
General specifications apply to this series and its design wavelength. The source appends “mm” to numerical-aperture values; N.A. is dimensionless. The numerical values are retained and the original labels and units are recorded. Confirm this discrepancy against the individual model drawing. No unlisted edge thickness, second-surface radius or aspheric coefficients are inferred.
- Material
- CVD laser-grade zinc selenide (ZnSe)
- Design wavelength
- 4μm
- Diameter tolerance
- +0.0/-0.1mm
- Focal length tolerance
- ±1%
- Center thickness tolerance
- ±0.2mm
- Centration error
- <3 arcmin
- Surface quality
- 60-40
- Edge bevel
- 0.2mm×45°
Available specifications
USD unit prices. Shipping, taxes and dispatch timing are confirmed with your quotation. Select models and quantities to build your quote list.
6 models
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Dia. = diameter; BFL = back focal length; CT = center thickness. Units remain shown in each heading.
| Details | Quote | ||||||||||
|---|---|---|---|---|---|---|---|---|---|---|---|
| GLH7AL1-025-012 | CVD laser-grade zinc selenide (ZnSe) | 25.4 | 12.7 | 9.88 | 7 | 0.67 | 18.252 | Uncoated | $1,228 | ||
| GLH7AL1-025-025 | CVD laser-grade zinc selenide (ZnSe) | 25.4 | 25 | 22.53 | 6 | 0.42 | 35.83 | Uncoated | $1,127 | ||
| GLH7AL1-025-050 | CVD laser-grade zinc selenide (ZnSe) | 25.4 | 50 | 47.95 | 5 | 0.22 | 71.66 | Uncoated | $1,069 | ||
| GLH7AL1-025-012-IR1 | CVD laser-grade zinc selenide (ZnSe) | 25.4 | 12.7 | 9.88 | 7 | 0.67 | 18.252 | IR1 antireflection coating; average reflectance <1.5% over 3–5μm | $1,300 | ||
| GLH7AL1-025-025-IR1 | CVD laser-grade zinc selenide (ZnSe) | 25.4 | 25 | 22.53 | 6 | 0.42 | 35.83 | IR1 antireflection coating; average reflectance <1.5% over 3–5μm | $1,199 | ||
| GLH7AL1-025-050-IR1 | CVD laser-grade zinc selenide (ZnSe) | 25.4 | 50 | 47.95 | 5 | 0.22 | 71.66 | IR1 antireflection coating; average reflectance <1.5% over 3–5μm | $1,142 | ||
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Curves
Technical notes
Review the material, dimensions and other specifications listed for the individual model. Check any available curves against the model's stated operating range.
Illustrations and printable specification summaries are reference information, not manufacturing drawings. Confirm technical suitability and final requirements with your quotation.
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