Product type: Flat Lens. Application: Lighting, Medical, Optical, Photography, Mineralogy. Model: Waveplate.
Overview
The Crystalline quartz quarter 1/2 halfwave zero order coated waveplate (retarder) is supplied as a waveplate / polariser / grating made from Crystal quartz. Listed geometry: diameter 20.00+/-0.25mm, before cutting, thickness 2.00mm(REF), single-lens shape. Optical / electrical data: transmittance >95%. Coating: Anti-Reflection. It is used in Lighting, Medical, Optical, Photography and Mineralogy. Dimensions, material grade, coating and finish can be quoted to your drawing; the values above are the listed starting point.
Specifications
| Material | Crystal quartz |
|---|---|
| Type | Flat Lens |
| Shape | Single-lens |
| Diameter | 20.00+/-0.25mm, before cutting |
| Thickness | 2.00mm(REF) |
| Transmittance | >95% |
| Coating | Anti-Reflection |
| Parallelism | < |
| Clear aperture | >85% |
| Usage | Lighting, Medical, Optical, Photography, Mineralogy |
| Model NO. | Waveplate |
| Lenses Color | Clear |
| Width | 3.00-0.10/+0.15mm,center to cutting edge |
| R1 | Infinity |
| R2 | Infinity |
| Optical axis | To be perpendicular within +/-1deg of A |
| S1&S2 | S-D 20-10 |
| Chamfer | Protected |
| Standard | MIL-PRF-13830B |
| CPG is also an ISO | 9001&14001 certified manufacture, we deliver fast and provide best cost performance ratio for our customers. |
| Supplier | CPG OPTICS LIMITED |
Technical data
| Items | Description | |
| Halfwave plate | Material: | Crystal Quartz |
| Diameter: | 20.00+/-0.25mm, before cutting | |
| Thickness: | 2.00mm(REF) | |
| Width: | 3.00-0.10/+0.15mm,center to cutting edge | |
| R1: | Infinity | |
| R2: | Infinity | |
| Optical axis: | To be perpendicular within +/-1deg of A | |
| Surface quality: | S1&S2:S-D 20-10 | |
| Parallelism: | <2' | |
| Clear aperture: | >85% | |
| Chamfer: | Protected | |
| Standard: | MIL-PRF-13830B |
What to specify when you request a quote
- Material — listed as “Crystal quartz”; name the glass or crystal.
- Geometry — listed as “20.00+/-0.25mm, before cutting”; give diameter, focal length or radii, angles and tolerances.
- Surface figure — quote surface figure (λ) and scratch-dig.
- Centring and edges — listed as “Protected”; state centration and edge chamfer.
- Coating — listed as “Anti-Reflection”; list the band and reflectance or transmission target.
Engineering guides for this part
For material grades and coating options, see AR-Coated Glass Materials for High-Transmission Optical 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 AR Coated Glass for Appliance Touch Screens: Specs and Selection. A related standard product is AR-Coated High-Transparency Optical Glass.
