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| physical object > artifact > device > instrument > optical device > coating > Lumogen | 
| Lumogen comparison table | ||
| Subject | has definition | is a kind of | 
|---|---|---|
| coating | optical device | |
| Lumogen | Fluorescent UV coating which improves the blue sensitivity of a CCD by emitting light at approximately 540 to 580 nm when excited with light of wavelengths shorter than 450 nm. | coating | 
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