| 摘要 |
PROBLEM TO BE SOLVED: To provide an economical optical apparatus for testing weatherability, in which a wavelength selection filter is easily installed without disassembling a light source, and an even exposure can be obtained. SOLUTION: The optical apparatus is provided with a filter frame (2), which is made up so that the wavelength selection filter can be inserted therein and formed by assembling rectangular frames composed of a pillar, an upper horizontal bridge, and a lower groove section. In the filler frame (2), two frames where the pillars are coupled to each other are made up so as to be rotative by coupling the pillars on one side using a long hinge, and so as to be capable of opening and closing by coupling the pillars on the other side using a clamping plate. Furthermore, the filler frame (2) can be installed so as to surround the light source (21). COPYRIGHT: (C)2004,JPO
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