Application: Electronics & Instruments. Model: Optical Glass.
Overview
Laboratory Grade Optical Quartz Glass Bk7 for Telescope Mirror/Camera/Sensor Glass is a CCD / CMOS sensor cover glass made from Quartz Glass. Listed geometry: diameter +/-0.1, size Customized, flat/curve shape. Flatness High Class. Listed for Fireplace Oven Glass and Laboratory Instruments applications. Dimensions, material grade, coating and finish can be quoted to your drawing; the values above are the listed starting point.
Specifications
| Material | Quartz Glass |
|---|---|
| Shape | Flat/Curve |
| Size | Customized |
| Flatness | High Class |
| Application | Fireplace Oven Glass, Laboratory Instruments, etc |
| Usage | Electronics & Instruments |
| Model NO. | Optical Glass |
| Appearance | Bent Tempered/Flat Tempered |
| Standard | GB15763.2-2005 |
| Steel Degree | Tempered Glass |
| Thickness of Flat Tempered Glass | 1mm-50mm |
| Thickness of Curve Tempered Glass | 1mm-50mm |
| Fragment State | Ⅲ |
| Technics | Physically Tempered |
| Edges Treatment | Safe/Smooth Edge |
| Diameter Tolerance | +/-0.1 |
| Strain Point | 893 Celsuis Degrees |
| Softening Point (Estimated) | 1585 Celsuis Degrees |
| Annealing Point | 1042 Celsuis Degrees |
| Circular | Diameter 1mm – Diameter 500mm |
| Square/Rectangle | 1 * 1mm-800 * 800mm |
| Visible Light | ≥90%,≥92%,≥95%,≥98% |
| Ra | ≤0.5nm,≤1nm |
| Supplier | Shanghai Wuyong Glass Co., Ltd. |
Technical data
| Basic Size Specifications | |
|---|---|
| Shape | Circular/Square/Rectangular/Irregular Shapes |
| Size Range | Circular: Diameter 1mm – Diameter 500mmSquare/Rectangle: 1 * 1mm-800 * 800mm |
| Thickness | 0.1mm-50mm |
| Dimensional Tolerance | +-0.1mm |
| Thickness Tolerance | +-0.05mm-0.1mm |
| Material Model | N-BK7/H-K9L |
| Performance Parameters | |
|---|---|
| Refractive Index | 1.46-1.9 |
| Transmittance | Visible Light: ≥90%,≥92%,≥95%,≥98% |
| Ultraviolet UV | 200nm-400nm High Transparency |
| Infrared IR | 800nm-3000nm High Transparency |
| Wavelength Range | 200nm-5000nm |
| Surface Finish | 40/20,20/10,10/5(MIL-O-13830A) |
| Polishing Precision | Double Sided Polishing/Single-Sided Polishing |
| Surface Roughness | Ra:≤0.5nm,≤1nm |
| Angle | Customized |
What to specify when you request a quote
- Material and grade — listed as “Quartz Glass”; name the glass or crystal grade (for example JGS1, N-BK7, Borofloat 33, sapphire) because it fixes the transmission band and thermal limits.
- Diameter or outline — listed as “Customized”; give the nominal size and the tolerance you can accept.
- Thickness — listed as “1mm-50mm”; state nominal thickness and tolerance; thinner windows need tighter flatness control.
- Surface quality and flatness — listed as “High Class”; quote scratch-dig and flatness over the clear aperture, not the whole part.
- Coating — list the wavelength band and the maximum reflectance per surface for any AR coating.
- Clear aperture and edges — define the usable aperture and the edge chamfer.
Engineering guides for this part
For material grades and coating options, see Infrared Window Glass: Material Options for Optical Sensors & Parts. How parts like this are machined and finished is covered in AR Coating Process for Optical Glass Windows – Complete Manufacturing Overview. For an application example, read Infrared Window Glass for Smart Home Appliance Sensors. Before sending a drawing, check Specifying Coatings for Custom Glass Windows and Substrates. A related standard product is AR Anti-Reflection Optical Window.
