Optical: systems and elements – Compound lens system – Telescope
Patent
1995-11-20
1998-10-20
Nguyen, Thong
Optical: systems and elements
Compound lens system
Telescope
359409, 359480, 359817, G02B 2300, G02B 702
Patent
active
058255370
ABSTRACT:
A spherical binocular capable of being conveniently portable and suitable for use for watching a game in a baseball stadium, a soccer ground or the like. Two hemispherical shells are foldably or pivotally connected together into a spherical configuration. The hemispherical shells each are formed at a center thereof with an ocular through-hole, in which an ocular concave lens is fitted. A front plate is fitted in a front opening edge of each of the shells and formed at a center thereof with an objective opening, in which an objective convex lens is arranged so as to be aligned with the objective convex lens. When the hemispherical shells are folded over each other to align the front opening edges with each other, a holding pawl and holding groove of one of the hemispherical shells are fittedly engaged with a holding groove and a holding pawl of the other of the hemispherical shells, respectively. Inward forcing of the holding pawl of each of the hemispherical shells thus folded permits the holding pawl to be released from engagement with the holding groove for use.
REFERENCES:
patent: D374680 (1996-10-01), Yang et al.
patent: D375968 (1996-11-01), Oshiyama
patent: 3397935 (1968-08-01), Natsume
patent: 4770519 (1988-09-01), Jacques
patent: 4913538 (1990-04-01), Wakayama et al.
patent: 5087991 (1992-02-01), Miner
Five(05) Pictures of the binocular provided by the McDonald Fast Food Restaurant.
Muti Work Corporation
Nguyen Thong
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