| 摘要 |
PURPOSE:To position a range finding lens on a holding member without colliding the end parts of the range finding lenses with each other even in the case that a base length is extremely short by forming 1st an 2nd projecting parts on one side part of the range finding lens and forming 3rd and 4th projecting parts on the other side part of the range finding lens and engaging the 1st and 2nd projecting parts of the range finding lens with the 3rd and 4th projecting parts of the adjacent range finding lens by applying a nesting system when the range finding lenses are positioned on the holding member. CONSTITUTION:Projecting pieces 30 and 32 are formed on the right side part of the range finding lens 22 and on the position asymmetrical to the base line 34, and positioning pins 36 and 38 are firmly fixed on the projecting pieces 30 and 32. Projecting pieces 40 and 42 are formed on the left side part of the range finding lens 22 and on the position being point-symmetric to the optical axis P with reference to the projecting piece 30 and 32, and positioning pins 44 and 46 are firmly fixed on the projecting pieces 40 and 42. When the range finding lenses 22 and 24 are fitted to a lens barrel 26, the dimension S of the range finding lenses 22 and 24 has to be free in space as long as a width E where the projecting pieces 30 and 32 overlap the projecting pieces 40 and 42 in design by installing the projecting pieces 30, 32, 40 and 42 in such a way. |
