UV Transmitting Filter / UTVAF
A filter that transmits a specific wavelength in the UV range and cuts the visible range.
It is used to select UV wavelength from a light emission or select a specific wavelength from multiwavelengths.
It is widely used in fluorescence imaging or selecion of only UV exposure from a visible light.UTVAF-36U is used for selecting the emitted light of the i line (365nm).
Use the filter in a short wavelength detector, or to cut off the brightness of the visible light and increase the sensibility of the UV light.
Common Specifications
| Product Image | Schematic | Outline Drawing |
|---|---|---|
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| Part Number | Center Wavelength | Transmittance for Center Wavelength | Absorption Limit Short Wavelength | Transmittance at Short Absorption Limit | Absorption Limit Long Wavelength | Transmittance at Long Absorption Limit | Average Transmittance (absorption limit long wavelength − 700nm) |
|---|---|---|---|---|---|---|---|
| UTVAF-50S-33U | 317nm | ＞85% | 233nm | ＜5% | 431nm | ＜0.3% | ＜5.0% |
| UTVAF-50S-34U | 325nm | ＞73% | 251nm | ＜5% | 398nm | ＜0.1% | ＜0.1% |
| UTVAF-50S-36U | 350nm | ＞72% | 288nm | ＜5% | 410nm | ＜0.1% | ＜0.1% |
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