Optical: systems and elements – Compound lens system – Telescope
Patent
1997-10-23
1999-03-23
Nguyen, Thong
Optical: systems and elements
Compound lens system
Telescope
359399, 359412, G02B 2300
Patent
active
058868143
ABSTRACT:
A folded image intensifier viewer with an asymmetric viewing system and a single image intensifier and two eyepieces able to regulate the mutual distance between the eyepieces, after a beam splitter which divides the beam path into two extremely asymmetric parts, for each eyepiece a lens system is provided with at least one having at least two lenses.
REFERENCES:
patent: 4568153 (1986-02-01), Baluteau
patent: 4582400 (1986-04-01), Lough
patent: 5223974 (1993-06-01), Phillips et al.
patent: 5621567 (1997-04-01), Quint et al.
patent: 5712726 (1998-01-01), Espie et al.
Nguyen Thong
Simrad Optronics A/S
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