| 摘要 |
<p>Apparatus 20 for exposing photographic materials, for example, film or paper, for testing its response to various wavelengths of light at various intensities. The apparatus includes an elongate housing 22 divided by baffles 34, 36, 38, into a plurality of compartments 24, 26, 28, 30, 32. One compartment 24 contains a source 41 of light of constant intensity and color temperature. Remotely disposed in the housing are means 160, 162 for mounting the film for exposure and includes a step wedge 158. Other compartments include filters 122-136 for modifying the intensity and color of the light passing from the source to the film through apertures in the baffles; a strobe 112 as an alternative source of light; a shutter 110 for controlling flow of light from the source; and a spectroradiometer 154 for analyzing the light and maintaining its intensity and color temperature constant.</p> |
