| 摘要 |
PURPOSE:To eliminate the need for the reinforcement of strength and to reduce the weight by dividing an optical hood into two parts, fixing respective divided parts on structural bodies respectively and engaging both the end parts of the divided parts each other in the form of a comb. CONSTITUTION:The optical hood is divided into two parts, the 1st stage 3' and the 2nd stage 3'', and the respective parts are fitted to the structural bodies 4', 4'' at one position respectively. The connection part 6 between the 1st stage 3' and the 2nd stage 3'' has a structure of engaged teeth of a comb at its cross section, so that light from the external part of the hood is interrupted and force applied from the external to the 1st and 2nd stages 3', 3'' can be also absorbed. Said constitution makes it possible to eliminate the reinforcement of the strength and reduce the weight. |
