平面鏡
『平面光學元件』泛指一系列的光學元件,而其中至少包含一個稱為平坦表面的的光學元件稱之,例如Flat、Plano-Concave…等等。
而單面平面光學器件僅在一側進行研磨和拋光。 這些平面經常用作“測試板”或參考表面,常用於與其他光學元件或基板的平面度進行比較。 Plano 參考材料通常由極其穩定的材料製成,例如熔融石英、BK7 玻璃、Zerodur、硫化鋅、鍺、藍寶石、矽或硒化鋅。 單面光學器件也可以用作高品質光學鏡的基底。
![](https://4dtechnology.com.tw/wp-content/uploads/flat-optics.jpeg)
Application:
Dual sided plano optics, or double-sided plano optics, are polished to specification on both sides. A double-sided optic may be used as an optical window (with two parallel surfaces), a wedge (with the two surfaces polished at a small angle relative to each other), as a substrate for an optical filter, as a material sample to test homogeneity, or as a reference for evaluating another test optic.
In the most general sense, plano optics include all components with a surface that can be tested using a collimated beam to compare it against a flat reference. By that broader definition, the family of plano optics can be said to also include beam splitters, corner cubes, prisms, periscopes, etalons for spectroscopy, etc.
4D’s Fizeau laser interferometers measure flatness, shape, thickness uniformity, homogeneity and wedge of plano optics, mirrors, windows, wedges, wafers, filters, etc. 4D Fizeau systems are available to measure flat optics at wavelengths from deep UV through IR.
The compact AccuFiz Fizeau excels at fast, repeatable measurement of surface shape and transmitted wavefront error of flat and wedged optics. With the optional Surface Isolation Source (SIS) the AccuFiz can measure both sides of transparent, parallel optics as thin as 200 microns, as well as surfaces in multi-surface optical systems, remote cavity test setups, and solid cavities.
- Aperture Converter(Expanders): allow a standard AccuFiz system to measure optics with diameters up to 600mm
- NanoCam HD: systems measure surface roughness on coated and uncoated plano optics to ensure the quality of polishing processes.