Abstract: A collapsible telescope is disclosed which comprises a cylindrically-shaped main body of a quadrangular cross section defined by two long side walls and two short side walls and having folding lines at its respective angled portions and at least a lid provided via said folding line at one of opposite open-mouthed edges of one of said long side walls of said main body. An ear member is provided at one of the edges of said lid which faces against said one of the open-mouthed edges of said one of the long side walls. Preferably, an auxiliary folding line is formed to extend the full width of said one of said long side walls in a direction parallel with the width of short side walls of said main body, said auxiliary folding line being positioned in alignment with one that is developed when said two short side walls are stacked over the remaining one of said long side walls and said one of said long side walls is folded. Lenses fixedly secured around apertures formed in said two short side walls.

Abstract: A collapsible telescope is disclosed which comprises a cylindrically-shaped main body of a quadrangular cross section defined by two long side walls and two short side walls and having folding lines at its respective angled portions and at least a lid provided via said folding line at one of opposite open-mouthed edges of one of said long side walls of said main body. An ear member is provided at one of the edges of said lid which faces against said one of the open-mouthed edges of said one of the long side walls. Preferably, an auxiliary folding line is formed to extend the full width of said one of said long side walls in a direction parallel with the width of short side walls of said main body, said auxiliary folding line being positioned in alignment with one that is developed when said two short side walls are stacked over the remaining one of said long side walls and said one of said walls is folded. Lenses fixedly secured around apertures formed in said two short side walls.