Color and Absorptive Filters are available in longpass, bandpass, and neutral density options. Color and Absorptive Filters are ideal for use as environmental displays or for other machine vision or industrial applications.
These filters utilize the material’s inherent absorption or transmission properties, rather than interference effects from thin film coatings. By controlling the thickness of the material, precise filtering across large bandwidths can be achieved.
Crysmit Optics’Color and Absorptive Filters are available in glass, plastic, or film substrates.
| Type | Part NO.: |
| Cut off Filters | Ultraviolet Glass, Yellow Glass, Orange Glass, Red Glass |
| Selective Absorption Filter | Ultraviolet Transmitting, Violet Filter, Blue Filter, Green Filter, Yellow Filter, Orange Filter, Red Filter |
| Infrared Filter | RG780, RG800, RG830, RG850 |
| Neutral Density Filter | NG1, NG3, NG4, NG5, NG9, NG11 |
| Attribute | Specification |
| Dimension Tolerance | +0/-0.1 |
| Thickness Tolerance | ±0.05 |
| Clear Aperture | >90% |
| Flatness (633nm) | λ/8 |
| Surface Quality | 40/20 |
| Parallelism | <1 arc min |
