Application: Medical, Optical. Model: yt410.
Overview
Uncoated Optical Sectoral Protection Bk7 Glass Window for Medical and Optical Machine is an optical glass window in Optical Glass (Bk7 substrate). Listed geometry: diameter Customer's Request, thickness Customer's Request. Optical / electrical data: transmittance >95%. Coating: HC; flatness L/4. Typical applications: for Medical and Optical Machine. 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 | Bk7 |
| Diameter | Customer's Request |
| Thickness | Customer's Request |
| Transmittance | >95% |
| Coating | HC |
| Parallelism | Parallelism |
| Clear Aperture | 90% |
| Application | for Medical and Optical Machine |
| Usage | Medical, Optical |
| Model NO. | yt410 |
| Lenses Color | Clear |
| Dimensional Tolerance | +/-0.1mm |
| Index of Refraction ND | 1.51680 |
| S/D | 60/40 |
| Surface Flatness | L/4 |
| materials comparison | Material |
| Supplier | Changchun Yutai Optics Co., Ltd. |
Technical data
| Material | Optical glass |
|---|---|
| Diameter | Customer's request |
| Thickness | 1-20mm |
| Index of Refraction nd | 1.51680 |
| Surface Flatness | L/4 |
| Surface quality | 60/40 |
| Bevelling | <0.2×45° |
| Coating | as customer's requirements |
What to specify when you request a quote
- Material and grade — listed as “Optical 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 “Customer's Request”; give the nominal size and the tolerance you can accept.
- Thickness — listed as “Customer's Request”; state nominal thickness and tolerance; thinner windows need tighter flatness control.
- Surface quality and flatness — listed as “Parallelism”; quote scratch-dig and flatness over the clear aperture, not the whole part.
- Coating — listed as “HC”; list the wavelength band and the maximum reflectance per surface for any AR coating.
- Clear aperture and edges — listed as “90%”; define the usable aperture and the edge chamfer.
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 AR Coating Process for Optical Glass Windows – Complete Manufacturing Overview. For an application example, read Bulk Ordering Glass Windows for Robotic Vacuum Optical Sensors. Before sending a drawing, check Specifying Coatings for Custom Glass Windows and Substrates. A related standard product is Infrared Windows.
