| 摘要 |
<p>PROBLEM TO BE SOLVED: To prevent a waterproof case for a film unit equipped with a lens from being soiled by a cosmetic sticking to the case. SOLUTION: The waterproof type lens-fitted photographic film unit 1 is constituted by covering the unit main body 3 with a cover main body 4 and a cap body 5. The front window 9 and the top window 10 of the cover main body 4 and the cap body 5 are formed of transparent plastics. Methacrylstyrene resin is used for the transparent plastics used for the waterproof cover 2, a photographic lens 11 and a finder lens 12 so that they may hardly become cloudy even in the case the cosmetic such as anti-suntan emulsion sticks to them. Besides, even in the case the unit is left under a high temperature environment, noxious gas which causes the fogging of the photographic film never arise, then, the damage to the photographic function is prevented.</p> |
