Product type: Convex Lens. Application: Lighting, Medical, Optical, Photography. Model: biometric scanner 02.
Overview
Bk7 Optical Biometric Prism, Custom Optical Glass Prism for Access Control Biometric Scanner: an optical prism made from Optical Glass. Listed geometry: laminated lenses shape. Optical / electrical data: transmittance >95%. Coating: HC; surface quality 40~20 / 20~10 Scratch Dig. 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 | Convex Lens |
| Shape | Laminated Lenses |
| Transmittance | >95% |
| Coating | HC |
| Surface Quality | 40~20 / 20~10 Scratch Dig |
| Usage | Lighting, Medical, Optical, Photography |
| Model NO. | biometric scanner 02 |
| Lenses Color | Clear |
| Item | Optical Biometric Lens |
| Material Type | N~Bk7 / H~K9l Optical Glass, Fused Silica, Custom |
| Core Function | Light Path Steering, Total Internal Reflection, Im |
| Surface Coating | Uncoated / Single Layer / Multi Layer Ar Coat |
| Dimension Tolerance | ±0.02mm ~ ±0.1mm According to Drawing Requirement |
| Angle Tolerance | ±1 ~ ±5 |
| Edge Treatment | Protective Bevel, Blackened Edge for Stray Light S |
| Typical Application | Fingerprint Scanner, Facial Recognition Module, AC |
| Customer Service | OEM Drawing Fabrication, Special Coating, Glue Bon |
| Supplier | Jinan Honhai Glass Company Limited |
Technical data
| Table of technical parameters of optical biometric prism | |
|---|---|
| Material | BK7 or other optical materials |
| Dimension specification | Can be based on customer requirements |
| Dimension tolerance | ±0.05mm |
| Surface quality | 60/40 or higher |
| Coating | Aluminum reflective + protection coating, single layer MgF2, black painting |
| Clear aperture | >90% |
What to specify when you request a quote
- Material — listed as “Optical Glass”; name the glass or crystal.
- Geometry — listed as “±0.02mm ~ ±0.1mm According to Drawing Requirement”; give diameter, focal length or radii, angles and tolerances.
- Surface figure — listed as “40~20 / 20~10 Scratch Dig”; quote surface figure (λ) and scratch-dig.
- Centring and edges — listed as “Protective Bevel, Blackened Edge for Stray Light S”; state centration and edge chamfer.
- Coating — listed as “HC”; list the band and reflectance or transmission target.
Engineering guides for this part
How parts like this are machined and finished is covered in Optical Glass Polishing for High Clarity Surfaces. Before sending a drawing, check Design Guide for Holes, Slots, and Edges in Custom Glass Parts.
