Knight optical代理,Wratten 彩色濾光片FWP,帶通型/長通型濾光片,Wratten 2 濾光片最初是為攝影領域設計的，但也被廣泛應用于從工業制造到醫療等成像應用中。
Knight optical代理,Wratten 彩色濾光片FWP可選類型包括：
帶通型 Wratten 彩色濾光片（Bandpass Wratten Colour Filters）
長通型 Wratten 彩色濾光片（Longpass Wratten Colour Filters）
Knight optical代理,Wratten 彩色濾光片FWP規格：
| Name | Type | Wavelength cut-on (nm) | CWL (nm) | Wavelength cut-off (nm) | Wratten No. | Length (mm) | Width (mm) | Thickness (mm) | Colour | ||
| 568FWP7575 | 568 | 2710 | 22 | 75 | 75 | Orange | |||||
| 622FWP7575 | 622 | 2714 | 29 | 75 | 75 | Tricolour Red | |||||
| 519FWP7575 | Longpass | 519 | 2696 | 12 | 75 | 75 | 0.1 | Yellow | |||
| 494FWP7575 | Longpass | 494 | 2698 | 8 | 75 | 75 | 0.1 | Yellow | |||
| 440FWP7575 | Bandpass | 414 | 440 | 480 | 47 | 75 | 75 | 0.1 | Tricolour blue | ||
| 430FWP7575 | Longpass | 430 | 2715 | 2E | 75 | 75 | 0.1 | Yellow (UV Absorbing) | |||
| 411FWP7575 | Longpass | 411 | 2697 | 2B | 75 | 75 | 0.1 | Yellow (UV Absorbing) | |||
| 852FWP7575 | Longpass | 852 | 2716 | 87C | 75 | 75 | 0.1 | Black (Absorbs Visible Passes IR up to 2500nm) | |||
| 794FWP7575 | Longpass | 794 | 2714 | 87 | 75 | 75 | 0.1 | Black (Absorbs Visible Passes IR up to 2500nm) | |||
| 717FWP7575 | Longpass | 717 | 2718 | 89B | 75 | 75 | 0.1 | Black (Absorbs Visible Passes IR up to 2500nm) |
?http://ydzhly.com/knightoptical-ko/Knight optical代理,Wratten 彩色濾光片FWP,帶通型/長通型濾光片/
https://zhuanlan.zhihu.com/p/1899844297261548935
