Optical: systems and elements – Compound lens system – Telescope
Patent
1994-07-25
1996-09-17
Nguyen, Thong
Optical: systems and elements
Compound lens system
Telescope
359407, 359480, G02B 702, G02B 2318, G02B 2320
Patent
active
055574572
ABSTRACT:
A binocular apparatus body blank of sheet material and divided by fold lines includes a distal wall having a pair of spaced apart objective lens ports and two opposing lateral edges; a bottom wall extending from an edge of the distal wall and having a lateral fold line to permit the apparatus body to collapse; a top wall extending from an opposing edge of the distal wall and having a lateral fold line to permit the apparatus body to collapse; a proximal wall having an outer face and two opposing lateral edges and having a pair of spaced apart eyepiece ports and extending from an edge of said top wall opposite the distal wall; a bonding flap extending from an edge of the proximal wall opposite the top wall for bonding to the remote longitudinal edge of the bottom wall; two side walls extending from the opposing lateral edges of the distal wall, each side wall having a remote end and a lateral fold line to permit the side walls to collapse simultaneously with and top and bottom walls; and a side wall bonding section at each remote end for bonding to the outer face of the proximal wall at each the opposing lateral edge of the proximal wall. The apparatus preferably includes a nose receiving opening cut into the proximal and bottom walls, and a carrying cord port in each side wall; and a carrying cord secured within the ports.
REFERENCES:
patent: 4239328 (1980-12-01), Justice, Sr. et al.
patent: 4268111 (1981-05-01), Green et al.
patent: 4478498 (1984-10-01), Ohno
patent: 4773747 (1988-09-01), Bresnahan
patent: 4913541 (1990-04-01), Wakayama et al.
patent: 5353151 (1994-10-01), Schultz et al.
Nguyen Thong
Sikd-er Mohammad Y.
Van Der Wall Robert J.
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