Rod lens array and life-size imaging optical apparatus using the

Details Rod lens array and life-size imaging optical apparatus using the Rod lens array and life-size imaging optical apparatus using the

1998-06-11

1999-09-28

Sugarman, Scott J.

Optical: systems and elements

Lens

With graded refractive index

359652, 385124, G02B 618

Patent

active

059597836

ABSTRACT:
In a rod lens array in which a plurality of rod lenses each having a refractive-index distribution in the radial direction are arranged in two rows such that the optical axis for one row is parallel to that for the other row, and in a life-size imaging optical apparatus using the rod lens array, the outside diameter of each rod lens is such that 0.05 mm.ltoreq.R.ltoreq.0.25 mm and 0.5R.ltoreq.r.sub.0 .ltoreq.1.0R (2R: the distance between the optical axes of adjacent rod lenses and r.sub.0 : the radius of the effective area of each rod lens that provides a lens action) and the degree of overlap m defined by m=X.sub.0 /2R is such that 1.46.ltoreq.m.ltoreq.1.64 (where X.sub.0 is the view radius of a single rod lens which is given by X.sub.0 =-r.sub.0 /cos(Z.sub.0 .pi./P).

REFERENCES:
patent: 4349248 (1982-09-01), Rees
patent: 4571022 (1986-02-01), Lama et al.
patent: 4761062 (1988-08-01), Loce et al.
patent: 4852982 (1989-08-01), Yamamoto et al.
patent: 5450157 (1995-09-01), Rees

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