Product type: Thin Film Filter. Application: Medical. Model: STF59.
Overview
Optical Glass Window Plate High Precision is an optical glass window made from Glass. Listed geometry: thickness 2mm-5mm. Optical / electrical data: bandwidth 3-50nm. Surface quality 60-40; flatness 1/4 Lambda. Typical applications: Medical. Dimensions, material grade, coating and finish can be quoted to your drawing; the values above are the listed starting point.
Specifications
| Material | Glass |
|---|---|
| Type | Thin Film Filter |
| Shape | Customized |
| Fwhm | 3-50nm |
| Surface Quality | 60-40 |
| Flatness | 1/4 Lambda |
| Usage | Medical |
| Thickness Range | 2mm-5mm |
| Model NO. | STF59 |
| Color | Blue |
| Angle of incidence | 0° |
| Tolerance | +/-0.05mm |
| Supplier | Changchun Sunday Optics Co., Ltd. |
Technical data
| Diameter | 1mm to 1000mm |
|---|---|
| Diameter Tol. | +/-0.02mm |
| Material | Bk7 sapphire fused silica,ZnS2,CaF2,Si,Ge. |
| Surface Quality | 10-5 standard |
| Flatness | 1/10 lambda |
| Parallisam | <3 seconds |
| Chamfer | 0.25mmx45degree |
| Coating | AR,HR,Silver,Aluminum.Golden. |
What to specify when you request a quote
- Material and grade — listed as “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 — give the nominal size and the tolerance you can accept.
- Thickness — listed as “2mm-5mm”; state nominal thickness and tolerance; thinner windows need tighter flatness control.
- Surface quality and flatness — listed as “60-40”; 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 Custom Borosilicate Glass Sheets Cut to Size: Precision and Performance. How parts like this are machined and finished is covered in Borosilicate Glass Sandblasting for Consistent Matte Surface Processing. For an application example, read Boost Yield with Fused Silica Viewports for Vacuum and Optical Systems. Before sending a drawing, check Specifying Coatings for Custom Glass Windows and Substrates. A related standard product is Infrared Windows.
