Negative Achromatic Doublet Lenses — GLH32 Series
From $53 USD
Request a quoteProduct description
GLH32 negative achromatic doublets combine two glasses with different refractive indices and dispersions to reduce chromatic and spherical aberration. Their constituent glass pair is specified for each model.
Achromatic doublets are used in fluorescence microscopy, imaging inspection and spectroscopy. They can provide smaller focused spots than a singlet; select the positive or negative focal length appropriate to the optical system.
The source recommends orienting the flatter, larger-radius surface away from a collimated beam. Use the individual drawing to identify the correct surfaces and orientation.
Schematic
Dimensions in mm unless otherwise stated.
Available per-model coatings: VIS antireflection coating; average reflectance <0.5% over 400–700nm; NIR antireflection coating; average reflectance <0.5% over 650–1050nm.
General specifications
General specifications apply at series level. Each model retains its supplied glass pair and signed focal length, back focal length and radii. Tc1 and Tc2 are constituent center thicknesses; total center thickness is kept separate from legacy center thickness. Infinity denotes an infinite source radius, and Plano is retained for source-listed plane surfaces. A dash denotes a specification not supplied by the source; it is not zero. Reference diagrams are not machining drawings.
- Surface irregularity
- λ/4 @632.8nm
- Surface quality
- 40-20~60-40
- Diameter tolerance
- +0.0/-0.1mm
- Center thickness tolerance
- ±0.2mm
- Effective focal length tolerance
- ±2%
- Centration error
- 3-5 arcmin
- Edge bevel
- 0.2mm×45°
- RoHS
- Compliant (source statement)
Available specifications
USD unit prices. Shipping, taxes and dispatch timing are confirmed with your quotation. Select models and quantities to build your quote list.
26 models
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Compare up to four fields. Expand a model to read every specification.
Dia. = diameter; BFL = back focal length; CT = center thickness; ET = edge thickness. Units remain shown in each heading.
| Details | Quote | |||||||||
|---|---|---|---|---|---|---|---|---|---|---|
| GLH32-012A-025-VIS | BK7/F2 | 12.5 | -25 | -27.5 | 5.67 | 7.42 | VIS antireflection coating; average reflectance <0.5% over 400–700nm | $57 | ||
| GLH32-012A-040-VIS | BK7/F2 | 12.5 | -40 | -42.5 | 5.34 | 6.45 | VIS antireflection coating; average reflectance <0.5% over 400–700nm | $57 | ||
| GLH32-012B-020-VIS | N-BAF10/N-SF6HT | 12.7 | -20 | -22.3 | 4.5 | 6.3 | VIS antireflection coating; average reflectance <0.5% over 400–700nm | $53 | ||
| GLH32-012B-025-VIS | N-BAF10/N-SF6HT | 12.7 | -25 | -27 | 4 | 5.4 | VIS antireflection coating; average reflectance <0.5% over 400–700nm | $53 | ||
| GLH32-012B-030-VIS | N-BAK4/SF5 | 12.7 | -30 | -32.2 | 3.8 | 5.2 | VIS antireflection coating; average reflectance <0.5% over 400–700nm | $53 | ||
| GLH32-012B-050-VIS | N-BAK4/SF5 | 12.7 | -50 | -52.3 | 3.7 | 4.6 | VIS antireflection coating; average reflectance <0.5% over 400–700nm | $53 | ||
| GLH32-025A-030-VIS | N-BAF10/ N-SF10 | 25 | -30 | -36.12 | 12 | 16.54 | VIS antireflection coating; average reflectance <0.5% over 400–700nm | $82 | ||
| GLH32-025A-050-VIS | BK7/F2 | 25 | -50 | -53.3 | 7.22 | 10.75 | VIS antireflection coating; average reflectance <0.5% over 400–700nm | $82 | ||
| GLH32-025A-100-VIS | BK7/F2 | 25 | -100 | -102.6 | 6.6 | 8.39 | VIS antireflection coating; average reflectance <0.5% over 400–700nm | $82 | ||
| GLH32-025A-150-VIS | BK7/N-SF5 | 25 | -150 | -152.6 | 6.56 | 7.73 | VIS antireflection coating; average reflectance <0.5% over 400–700nm | $82 | ||
| GLH32-025B-040-VIS | N-BAF10/N-SF11 | 25.4 | -40 | -43.6 | 7 | 10.6 | VIS antireflection coating; average reflectance <0.5% over 400–700nm | $79 | ||
| GLH32-025B-050-VIS | N-BAF10/N-SF6HT | 25.4 | -50 | -53.2 | 6.5 | 9.4 | VIS antireflection coating; average reflectance <0.5% over 400–700nm | $79 | ||
| GLH32-025B-075-VIS | N-BAK4/SF5 | 25.4 | -75 | -78.8 | 6.3 | 8.6 | VIS antireflection coating; average reflectance <0.5% over 400–700nm | $79 | ||
| GLH32-025B-100-VIS | N-BAK4/SF5 | 25.4 | -100 | -103.6 | 6 | 7.7 | VIS antireflection coating; average reflectance <0.5% over 400–700nm | $79 | ||
| GLH32-040-090-VIS | BK7/N-SF5 | 40 | -90 | -92.84 | 8 | 13.37 | VIS antireflection coating; average reflectance <0.5% over 400–700nm | $117 | ||
| GLH32-040-100-VIS | BK7/N-SF5 | 40 | -100 | -104.3 | 13.5 | 15.26 | VIS antireflection coating; average reflectance <0.5% over 400–700nm | $117 | ||
| GLH32-040-150-VIS | BK7/N-SF5 | 40 | -150 | -156 | 6.75 | 9.92 | VIS antireflection coating; average reflectance <0.5% over 400–700nm | $117 | ||
| GLH32-040-200-VIS | BK7/N-SF5 | 40 | -200 | -201.1 | 5.95 | 8.34 | VIS antireflection coating; average reflectance <0.5% over 400–700nm | $117 | ||
| GLH32-012-020-NIR | N-BAF10/N-SF6HT | 12.7 | -20 | -22.5 | 4.5 | 6.4 | NIR antireflection coating; average reflectance <0.5% over 650–1050nm | $53 | ||
| GLH32-012-025-NIR | N-BAF10/N-SF6HT | 12.7 | -25 | -27.7 | 4.3 | 5.9 | NIR antireflection coating; average reflectance <0.5% over 650–1050nm | $53 | ||
| GLH32-012-030-NIR | N-LAK22/N-SF6HT | 12.7 | -30 | -32 | 4 | 5.3 | NIR antireflection coating; average reflectance <0.5% over 650–1050nm | $53 | ||
| GLH32-012-050-NIR | N-BAF10/N-SF6HT | 12.7 | -50 | -52.5 | 3.5 | 4.3 | NIR antireflection coating; average reflectance <0.5% over 650–1050nm | $53 | ||
| GLH32-025-040-NIR | N-BAF10/N-SF6HT | 25.4 | -40 | -43.4 | 6 | 9.8 | NIR antireflection coating; average reflectance <0.5% over 650–1050nm | $79 | ||
| GLH32-025-050-NIR | N-BAF10/N-SF6HT | 25.4 | -50 | -53.8 | 6 | 9.1 | NIR antireflection coating; average reflectance <0.5% over 650–1050nm | $79 | ||
| GLH32-025-075-NIR | N-BAF10/N-SF6HT | 25.4 | -75 | -78.9 | 5.8 | 7.9 | NIR antireflection coating; average reflectance <0.5% over 650–1050nm | $79 | ||
| GLH32-025-100-NIR | N-BAF10/N-SF6HT | 25.4 | -100 | -103.9 | 5.4 | 6.9 | NIR antireflection coating; average reflectance <0.5% over 650–1050nm | $79 | ||
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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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