Product type: Flat Lens. Application: Optical. Model: yt461.
Overview
Bk7 Fused Silica Ultra Thin a Phase Thick Sapphire Glass Wafer is a fused silica / quartz wafer made from Glass. Listed geometry: diameter 25.4mm.12.7mm or Else, thickness < 6 mm, single-lens shape. Optical / electrical data: bandwidth as Request, transmittance 90%-95%. Coating: HC; surface quality 60/40 or Better; flatness L/4. Typical applications: Optical. Dimensions, material grade, coating and finish can be quoted to your drawing; the values above are the listed starting point.
Specifications
| Material | Glass |
|---|---|
| Type | Flat Lens |
| Shape | Single-lens |
| Diameter | 25.4mm.12.7mm or Else |
| Thickness | < 6 mm |
| Fwhm | as Request |
| Transmittance | 90%-95% |
| Coating | HC |
| Surface Quality | 60/40 or Better |
| Flatness | L/4 |
| Parallelism | <3 Arc Minute |
| Usage | Optical |
| Model NO. | yt461 |
| Diameter Tolerance | +/-0.01 mm |
| Thickness Tolerance | +/-0.01mm |
| Chamfer | Standard Protective Chamfers |
| Supplier | Changchun Yutai Optics Co., Ltd. |
Technical data
| Product Name | 2"3"4" Ultra Thin A Phase Thick Sapphire Glass Wafer |
|---|---|
| Material | Sapphire |
| Diameter | 2"3"4" |
| Diameter Tolerance | +-0.01mm |
| Thickness | 500um,600um,300um… |
| Shape | circle |
| Surface | DSP/SSP |
| Flatness | L/4 |
| Surface Quality | 40/20 |
| Bevel | NONE |
| Coating | uncoated |
What to specify when you request a quote
- Diameter and flat / notch — listed as “25.4mm.12.7mm or Else”; state diameter, flat or notch and their tolerances.
- Thickness and TTV — listed as “< 6 mm”; give thickness, its tolerance and total thickness variation.
- Polish and roughness — listed as “60/40 or Better”; specify single- or double-side polish and roughness.
- Flatness, bow and warp — listed as “L/4”; quote flatness, bow and warp limits.
- Material grade — listed as “Glass”; name the grade (JGS1/JGS2, Borofloat 33, alkali-free, sapphire orientation).
Engineering guides for this part
For material grades and coating options, see Fused Silica Wafer Material Selection for Precision Glass Processing. How parts like this are machined and finished is covered in Precision CNC Machining of Quartz & Fused Silica Components. For an application example, read Fused Silica Glass Wafers for Precision Appliance Electronics. Before sending a drawing, check Quartz Glass Manufacturing: Controlling Thermal Conductivity in Fused Silica. A related standard product is Custom Ultra-Thin Quartz Glass Disc.
