| 摘要 |
PURPOSE:To obtain the titled filter not requiring any assembling work or threading work, easy to mass-produce and low in cost, by molding a main body of the filter for a camera and a frame as one body. CONSTITUTION:The frame 1 and the main body 2 of the filter are molded as one body. To prevent a gate mark and flow marks from being generated at the time of molding the main body 2 from a plastic, for example, a running gate 5 is provided at a part of a rear part of the frame 1, and a groove 6 or 7 is provided at the boundary of the main body 2 and the frame 1. EFFECT:It is unnecessitated to fit the main body of the filter, and it can be contrived to enlarge the effective field of vision. |
