Product type: Double-Convex Lenses. Application: Lighting, Medical, Optical, Photography, Laser, Astronomy, Imaging, Detection, etc. Model: OL-0021.
Overview
N-Bk7 & Fused Silica Cylindrical Optical Lens for Precision Optics Application is an optical lens in Optical Glass (Optical Glass, UV Fused Silica Substrate substrate). Listed geometry: single-lens shape. Optical / electrical data: transmittance Central 90% of Diameter. Coating: Ar.14, Ar.16, Ar.18, Ar.33 Coated; surface quality 40-20 Scratch-Dig or Custom Manufacturing. It is used in Lighting, Medical, Optical, Photography and Laser. Dimensions, material grade, coating and finish can be quoted to your drawing; the values above are the listed starting point.
Specifications
| Material | Optical Glass |
|---|---|
| Substrate | Optical Glass, UV Fused Silica Substrate |
| Type | Double-Convex Lenses |
| Shape | Single-lens |
| Transmittance | Central 90% of Diameter |
| Coating | Ar.14, Ar.16, Ar.18, Ar.33 Coated |
| Surface Quality | 40-20 Scratch-Dig or Custom Manufacturing |
| Usage | Lighting, Medical, Optical, Photography, Laser, Astronomy, Imaging, Detection, etc |
| Model NO. | OL-0021 |
| Lenses Color | Clear |
| Effective Focal Length(Efl) | From +6.4mm to +1000mm |
| Surface Accuracy, Irregularity | Lambda/4 or Custom Manufacturing |
| Exceptional Optical Precision | Strictly controlled surface accuracy (λ/8) and surface quality (20-10 scratch-dig) minimize light scattering and ensure uniform light divergence. |
| UV Fused Silica | High-purity synthetic amorphous silica with 195-2100nm transmittance, ultra-low thermal expansion coefficient, no UV-induced fluorescence, and radiation resistance. |
| N-BK7 | Cost-effective optical glass with excellent transmittance in 400-1100nm (visible to near-IR), ideal for general optical applications. |
| CaF2/MgF2 | Broad spectral transmittance (UV to mid-IR) and high laser damage threshold, suitable for high-power UV/IR systems. |
| ZnSe | Optimized for mid-IR (6-16μm) transmittance, commonly used in IR imaging and CO2 laser systems. |
| Laser Technology | 1064nm laser systems, CO2 lasers, UV laser processing. |
| Spectroscopy | UV-Vis-IR spectrometers, analytical instruments. |
| Imaging & Sensing | IR thermal imaging, machine vision (visible band). |
| Industrial Optics | UV curing equipment, optical alignment systems. |
| Research & Medical | Laboratory optics, diagnostic equipment. |
| Supplier | C-Laser (Taicang) Material Technology Co., Ltd. |
Technical data
| Material | Spectral Range | Key Advantages | Typical Applications |
| N-BK7 | 400 – 1100 nm | Cost-effective, good optical homogeneity, low dispersion | Visible-light optics, imaging systems |
| UV Fused Silica | 195 – 2100 nm | UV transmittance, (low thermal expansion), radiation-resistant | UV curing, laser processing (1064nm) |
| CaF2 (Calcium Fluoride) | 180 nm – 8 μm | Broad UV-IR transmittance, high laser damage threshold | High-power UV/IR lasers, spectroscopy |
| MgF2(Magnesium Fluoride) | 110 nm – 7 μm | Deep UV transmittance, low refractive index, chemical stability | Deep UV optics, aerospace instruments |
| ZnSe (Zinc Selenide) | 6 – 16 μm | Mid-IR optimization, low absorption in IR band | CO2 lasers, IR imaging |
What to specify when you request a quote
- Material — listed as “Optical Glass”; name the glass or crystal.
- Geometry — listed as “From +6.4mm to +1000mm”; give diameter, focal length or radii, angles and tolerances.
- Surface figure — listed as “40-20 Scratch-Dig or Custom Manufacturing”; quote surface figure (λ) and scratch-dig.
- Centring and edges — state centration and edge chamfer.
- Coating — listed as “Ar.14, Ar.16, Ar.18, Ar.33 Coated”; list the band and reflectance or transmission target.
Engineering guides for this part
For material grades and coating options, see AR-Coated Glass Materials for High-Transmission Optical Parts. How parts like this are machined and finished is covered in Optical Glass Polishing for High Clarity Surfaces. For an application example, read AR Coated Glass for Appliance Touch Screens: Specs and Selection. Before sending a drawing, check Fused Silica Refractive Index: Key to Optical Design Improvement. A related standard product is AR-Coated High-Transparency Optical Glass.
