技术性说明

Frequently Asked Questions

Frequently Asked Questions If you see a rainbow pattern on a soap bubble or on a film of oil you...

Effect of an optical coating on in-band and out-of-band transmitted and reflected wavefront error measurements

The wavefront error (WE) of a surface with an optical coating (“filter”) is ideally measured at the in-band wavelength of the filter. However, quite often this is not possible, requiring that the filter be measured at an out-of-band wavelength (typically 633 nm), assuming that the filter transmits (for transmitted WE, or TWE) or reflects (for reflected WE, or RWE) at this wavelength. This out-of-band TWE/RWE is generally assumed to provide a good estimation of the desired in-band TWE/RWE. It will be shown in this paper that this is not the case for a large class of filters (i.e., bandpass) where the group delay is significantly different at the in-band and out-of-band wavelengths and where the optical filter exhibits a thickness non-uniformity across the surface.

了解更多

定制询价

 

这个字段是用于验证目的,应该保持不变。

浏览线上产品目录

线上购买

线上购买或者定制询价

联系我们

电话: +1 (613) 741-4513
传真: +1 (613) 741-9986

电邮: [email protected]