| interference filter | has definition A filter used to shut out all light except the desired wavelengths. |  |
| has definition A method of constructing an optical filter to select a particular wavelength band for transmission and reject wavelengths outside this band. Similar to a Fabry-Perot etalon. The construction relies on constructive and destructive interference effects in a multilayer stack of quarter-wave reflective layers and half-wave spacer layers. |  |
| is a kind of spectrograph dispersing element |  |
| spectrograph dispersing element | has dispersion |  |
| has wavefront modification wavelength |  |
| instrument | has operator |  |
| artifact | has creator |  |
| has creation date |  |
| has purpose |  |
| has owner |  |
| physical object | has location or center of gravity |  |
| has angular momentum |  |
| has mass |  |
| has velocity |  |
| has momentum |  |
| has temperature |  |
| has volume |  |
| has extent |  |
| has material |  |