| 摘要 |
<p>The photographic enlarger diffuser has a two position fitting to fit in front of the enlarger lamp to provide diffuse light for colour work and semi diffuse light for monochrome work. The fitting (5) has two separate light tubes, with one (19) having the light reflected down its walls for complete diffuse effect while the other tube (6) has a diffusing screen (15) and a condenser lens (16) for semi diffuse light. The fitting is lightweight and low cost. The L-shaped housing has the two different diffusers in the two limbs, with an angled reflecting surface (20) forming the input mirror. Colour filters (C,M,Y) are fitted in front of the lamp (30).</p> |
