Optical Flat / HMPZP-150C25-40
It is a substrate polished to high precision were material change of the shape is very small due to the temperature variation. It can be used as test plates of the interferometer and the Newton test plate.
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Part Number
HMPZP-150C25-40
¥500,000
◦Inspection data of interferometric surface accuracy is provided with the optical flats.
◦You can select the required optical flat from our range of products listed by various sizes and surface accuracy.
◦In the high-precision and large size optical flats, a material having a lower thermal expansion than synthetic fused silica is used.
◦Arrow on the side of the component indicates the surface that is polished to the high surface accuracy.
◦Optical flat are delivered in case for storage.
◦You can select the required optical flat from our range of products listed by various sizes and surface accuracy.
◦In the high-precision and large size optical flats, a material having a lower thermal expansion than synthetic fused silica is used.
◦Arrow on the side of the component indicates the surface that is polished to the high surface accuracy.
◦Optical flat are delivered in case for storage.
| Catalog Code | W3145 |
|---|---|
| RoHS | Yes |
| CE | No |
| Download Product's Datasheet | |
| Guide | ▶Zerodur® is a registered trademark of SCHOTT AG. ▶CLEARCERAM® is a registered trademark of Ohara Corporation. ▶Wedge substrates are also available that can be used to prevent the influence of back reflection (WSB / WSSQ / WSSQK). WEB Reference Catalog Code/W3141 |
| Attention | ▶When used as a Newton test plate, it may scratch the sample if used improperly. If inspecting an object that is easily scratched, use a laser interferometer. ▶The number of Newton rings is approximately twice the value of the PV result of analysis by interferometer. ▶Optical flats are not coated in order to maintain the surface accuracy. If you need a coating, please contact to our Sales Division. ▶If there is a crack or chipping visible on the edges of an optical flats, the damage may have reduced the surface flatness. Please do not use damaged optical flats as they should be replaced. |
| Remarks | ▶A Newton ring is a rainbow-colored fringes that can be observed when the sample is adhered with optical flat. It is possible to estimate the flatness of the sample surface from the shape and number of this fringes. |
| Thickness t | 25mm |
| Surface Quality (Scratch-Dig) | 20−10 |
| Diameter φD | φ150mm |
| Material | Low expansion glass |
| Surface Flatness PVr | λ/40 |
| Parallelism | ＜3′ |
| Clear aperture | 90% of the diameter |
| Rear surface | Polished |
