Product type: Flat Lens. Application: Lighting, Medical, Optical, Photography, Astronomy.
Overview
The Dia20XL250mm Optical Borosilicate BF33 Glass Clear Rod Lenses LED Light is supplied as an optical lens made from Borosilicate Glass. Listed geometry: diameter 20.00.0+/-0.25mm, cylindrical shaped lens shape. Optical / electrical data: transmittance 90%-95%. Supplied uncoated. It is used in Lighting, Medical, Optical, Photography and Astronomy. Dimensions, material grade, coating and finish can be quoted to your drawing; the values above are the listed starting point.
Specifications
| Material | Borosilicate Glass |
|---|---|
| Type | Flat Lens |
| Shape | Cylindrical Shaped Lens |
| Diameter | 20.00.0+/-0.25mm |
| Transmittance | 90%-95% |
| Coating | Uncoated |
| Clear aperture | >90% |
| Usage | Lighting, Medical, Optical, Photography, Astronomy |
| Lenses Color | Clear |
| Specifications | Items |
| Length | 250.0+/-0.5mm |
| ROC1 | infinity |
| ROC2 | infinity |
| Cylindricity | <0.15mm |
| Perpendicularity | <0.05mm |
| Chamfer | <0.2mmx45deg |
| Standard | ISO 10110 |
| Inspection | payment, your products will be sent within 2 days. |
| Package detail | Optics are packed with Capacitor paper, white paper, custom-made plastic containers etc |
| Supplier | CPG OPTICS LIMITED |
Technical data
| Items | Description | |
| Glass Rod | Material: | Borosilicate Glass |
| Diameter: | 20.00.0+/-0.25mm | |
| Length: | 250.0+/-0.5mm | |
| ROC1: | infinity | |
| ROC2: | infinity | |
| Flatness: | Circumference:N/A | |
| End surfaces:N/A | ||
| Surface quality: | Circumference:5/5×0.4(S/D 60-40) | |
| End surfaces:fine ground | ||
| Cylindricity: | <0.15mm | |
| Perpendicularity: | <0.05mm | |
| Clear aperture: | >90% | |
| Chamfer: | <0.2mmx45deg | |
| Coating: | uncoated | |
| Standard: | ISO 10110 |
What to specify when you request a quote
- Material — listed as “Borosilicate Glass”; name the glass or crystal.
- Geometry — listed as “20.00.0+/-0.25mm”; give diameter, focal length or radii, angles and tolerances.
- Surface figure — quote surface figure (λ) and scratch-dig.
- Centring and edges — listed as “<0.2mmx45deg”; state centration and edge chamfer.
- Coating — listed as “Uncoated”; list the band and reflectance or transmission target.
Engineering guides for this part
For material grades and coating options, see BF33 Glass for Microfluidic Chips: Properties, Coatings & Selection Guide. How parts like this are machined and finished is covered in Optical Glass Polishing for High Clarity Surfaces. 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.
