UV Fused Silica Drum Lenses — GLH27 Series
From $63 USD
Request a quoteProduct description
GLH27 drum lenses are made from UV fused silica, with spherical ends and a cylindrical mounting surface along the optical axis. They are formed by grinding the outer diameter of a ball lens to make mounting easier and are used in optical communications.
Their short back focal length reduces the lens-to-fiber spacing required in fiber-optic applications. Focal length depends on the refractive index of the material.
The coating specifications apply to the two polished spherical surfaces, S1 and S2. Available per-model options: Uncoated; UV antireflection coating; average reflectance <0.5% over 250–450nm.
Schematic
Dimensions in mm unless otherwise stated.
UV fused silica has a lower refractive index than K9 glass. For the same drum-lens dimensions, the source describes a longer focal length for UV fused silica.
General specifications
General specifications apply at series level. The table lists the original model diameter, focal length, center thickness, back focal length and S1/S2 coating. Source diagrams are references and must not be used as machining drawings; verify the individual model drawing when ordering.
- Material
- UV fused silica
- Surface irregularity
- λ/4 @632.8nm
- Surface quality
- 40-20
- Design wavelength
- 587.6nm
- Diameter tolerance
- +0.0/-0.05mm
- Center thickness tolerance
- ±0.005mm
- RoHS
- Compliant (source statement)
- S1 / S2 coating
- Uncoated / UV
Available specifications
USD unit prices. Shipping, taxes and dispatch timing are confirmed with your quotation. Select models and quantities to build your quote list.
10 models
Choose comparison fields
Compare up to four fields. Expand a model to read every specification.
Dia. = diameter; CT = center thickness; BFL = back focal length. Units remain shown in each heading.
| Details | Quote | ||||||||
|---|---|---|---|---|---|---|---|---|---|
| GLH27-020-025 | UV fused silica | 2 | 1.99 | 2.5 | 0.74 | Uncoated | $63 | ||
| GLH27-020-030 | UV fused silica | 2 | 2.39 | 3 | 0.89 | Uncoated | $63 | ||
| GLH27-030-040 | UV fused silica | 3 | 3.18 | 4 | 1.18 | Uncoated | $69 | ||
| GLH27-040-050 | UV fused silica | 4 | 3.98 | 5 | 1.48 | Uncoated | $74 | ||
| GLH27-050-080 | UV fused silica | 5 | 6.36 | 8 | 2.36 | Uncoated | $85 | ||
| GLH27-020-025-UV | UV fused silica | 2 | 1.99 | 2.5 | 0.74 | UV antireflection coating; average reflectance <0.5% over 250–450nm | $77 | ||
| GLH27-020-030-UV | UV fused silica | 2 | 2.39 | 3 | 0.89 | UV antireflection coating; average reflectance <0.5% over 250–450nm | $77 | ||
| GLH27-030-040-UV | UV fused silica | 3 | 3.18 | 4 | 1.18 | UV antireflection coating; average reflectance <0.5% over 250–450nm | $83 | ||
| GLH27-040-050-UV | UV fused silica | 4 | 3.98 | 5 | 1.48 | UV antireflection coating; average reflectance <0.5% over 250–450nm | $88 | ||
| GLH27-050-080-UV | UV fused silica | 5 | 6.36 | 8 | 2.36 | UV antireflection coating; average reflectance <0.5% over 250–450nm | $100 | ||
No matching models. Change or clear your filters.
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.
Quote list
Choose models and quantities above. Your list is saved in this browser and can include models from other product categories.