Product type: Diffractive Fresnel Lens. Application: Lighting, Medical, Optical, Photography. Model: OL-0247.
Overview
The Tempered Borosilicate Glass Fresnel Lens Threaded Mirror Custom Fresnel Lens is supplied as an optical lens made from Optical Glass. Optical / electrical data: wavelength 488-694 Nm/700-950nm, transmittance >95%. Coating: Custom as Per Demand; surface quality 40-20 Scratch-Dig or Custom Manufacturing; flatness Lambda/10 at 632.8nm with Power Removed. Listed for Lighting, Medical, Optical and Photography applications. Dimensions, material grade, coating and finish can be quoted to your drawing; the values above are the listed starting point.
Specifications
| Material | Optical Glass |
|---|---|
| Type | Diffractive Fresnel Lens |
| Shape | Customized |
| Wavelength Range | 488-694 Nm/700-950nm |
| Transmittance | >95% |
| Coating | Custom as Per Demand |
| Surface Quality | 40-20 Scratch-Dig or Custom Manufacturing |
| Usage | Lighting, Medical, Optical, Photography |
| Model NO. | OL-0247 |
| Lenses Color | Clear |
| Surface Flatness | Lambda/10 at 632.8nm with Power Removed |
| Coating Type | Dielectric Coating |
| Supplier | C-Laser (Taicang) Material Technology Co., Ltd. |
Technical data
| Product Name | Fresnel Lens |
|---|---|
| Material | K9/BK7/Optical glass |
| Application | Optical equipment |
| size | customization |
| Place of Origin | China |
What to specify when you request a quote
- Material — listed as “Optical Glass”; name the glass or crystal.
- Geometry — 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 “Custom as Per Demand”; list the band and reflectance or transmission target.
Engineering guides for this part
For material grades and coating options, see Borosilicate Glass 3.3: Material & Coating Guide for Machined Parts. How parts like this are machined and finished is covered in Flat Glass Polishing Process for Precision Substrates. For an application example, read Boost Yield with Fused Silica Viewports for Vacuum and Optical Systems. Before sending a drawing, check Precision Glass Material Selection: Fused Silica vs Borosilicate & More. A related standard product is 4-inch Borofloat 33 Glass Wafers.
