紫外光波長選択フィルタ

Abstract

To provide a wavelength selective filter designed to allow a selected narrow wavelength range of light in a deep UV region (e.g., about 190 nm to about 280 nm) of the electromagnetic spectrum to pass through the filter with high transmittance, while absorbing other wavelengths of light with high optical density so that the absorbed light cannot pass through the filter.SOLUTION: A wavelength selective filter 106 includes a filter material 140. The filter material 140 includes a host matrix doped with metal ions. The filter material 140 has a transmission region within a deep ultraviolet (UV) range so that UV light having wavelengths within the transmission region is transmitted through the filter material 140.SELECTED DRAWING: Figure 1

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