Filters are designed by their manufacturers to transmit and / or absorb different wavelengths of light. In other words, they change the spectral properties of optical radiation. They therefore allow scientific experiments and industrial applications where that change is necessary..

Rising EO supply colored glass material by China to Schott, Hoya, and other manufacturers. They include short pass, long pass, band pass, ultraviolet, infrared, heat absorbing, and color temperature conversion filters. Just point and click on the name above to view information on that manufacturers filters.

Absorption, and particularly wavelength selective absorption is an important factor in the function of the filters. The two most common absorbers are thin metallic films which are particularly insensitive to wavelength for absorption, and colored glasses which absorb wavelengths varied by as much as several orders of magnitudes in only tens of nanometers. Interference filters are multilayer dielectric thin film devices.

Metallic films, colored glasses and thin dielectric films filter are all available from Rising EO.

Manufacturing Tolerances

The general tolerance specifications above provide a guideline regarding manufacturing capabilities for optics ranging in size from 3-100mm. The manufacturing limits are not absolute; tighter tolerances may be possible. Part specific tolerances may vary depending on component size, shape, and/or material.