| 摘要 |
An optical filter (10) is constituted by a flat plate (11), a rotation pin (12), and an actuation pin (13). The flat plate (11) includes a transparent substrate (31), a resin layer (32) formed on the transparent substrate (31), and a CNT layer (33) formed on the resin layer (32). The CNT layer (33) is disposed on the outermost layer. CNTs dispersed in the CNT layer (33) have a characteristic of more absorbing light that has a short wavelength. Therefore, by forming the CNT layer (33) on the outermost layer, it is possible to weaken the intensity of ultraviolet that is to reach the resin layer (32), and to prevent deterioration of a dye dispersed in the resin layer (32). Hence, the optical filter (10) acquires a satisfactory environment resistance.
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