Patent
1988-02-29
1989-07-04
Arnold, Bruce Y.
350 9631, G02B 600
Patent
active
048445894
ABSTRACT:
Refractive index distribution lenses may be made by forming refractive index distribution patterns in surfaces of two substrates. The patterns in the two substrates are made to be matching. Then, these surfaces of the two substrates are placed together with the patterns in the substrates coinciding. If the refractive index distribution patterns in the surfaces form semicylindrical lenses with parallel axes, the substrates may be put together so that the axes of the lenses in one substrate coincide with corresponding axes of semicylindrical lenses in the other substrate to form a rod lens array. If the refractive index distribution patterns in the two substrates are constant in directions parallel to the surfaces of these substrates but vary in the direction perpendicular to the surfaces, the surfaces of these substrates may be put together to form a slab lens.
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Asahara Yoshiyuki
Nakayama Shin
Omi Shigeaki
Sasai Hiroyuki
Shingaki Seiichi
Arnold Bruce Y.
Gass Rebecca D.
Hoya Corporation
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