MULTIPURPOSE COLLAPSIBLE OPERA GLASSES

PURPOSE: To safely make an opera glasses available by cutting off sunlight and to utilize it for multi-purpose use under various circumstances by providing a roof part over an objective lens and making the roof part foldable using one sheet of cardboard. CONSTITUTION: The main body is made of a base stock such as a sheet of cardboard. An eyepiece lens is mounted on the rear surface of a hole 34 for the eyepiece lens and an objective lens is mounted on the rear surface of a hole 33 for the objective lens. Next, it is fitted into the rear side along folding down parts 10-16, an upper pasting part 21 and a left-to-right pasting part 22 are mounted on the rear surface of an upper wall plate 5 and at nearly the both ends on the rear face of a eyepiece lens supporting plate 4 through adhesives and assembled, respectively. Both rear surfaces of upper and lower roof parts 8, 9 are also stuck with adhesive. By this constitution, the roof parts 8, 9 composed of the upper and lower parts inyterrupt sunlight from making incident on the objective lens 1. Focusing is performed by folding down the upper and lower wall folding parts 17, 18 and a left-and-right wall folding part 19 and adjusting a distance between the objective lens 1 and the eyepiece lens 2.