1981-12-07
1984-04-17
Punter, William H.
350250, G02B 2318, G02B 702
Patent
active
044430710
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. The lenses include one or more eye lenses and one or more objective lenses and these eye lenses may be formed on a single-unit plate typically of plastic and the objective lenses may be similarly formed on a single-unit plate.
REFERENCES:
patent: 3178842 (1965-04-01), Zimmerman
patent: 4239328 (1980-12-01), Justice, Sr. et al.
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