Title:
屈折率分布型光学素子
Document Type and Number:
Japanese Patent JP2659101
Kind Code:
B2
Abstract:
A gradient index optical element includes a first metal which is at least one kind of metal selected from the metals of Group A each having the content of 10-40 mol % in terms of oxide and a second metal which is at least one kind of metal selected from the metals of Group B each having the content of 2-15 mol % in terms of oxide, in which the first and second metals are distributed so that the concentration of one of said first and second metals increases from the center of the optical element toward the periphery and that of the other decreases. Hence, the gradient index optical element has an important advantage in practical use that the correction for chromatic aberration is excellent, that is, the Abbe's number increases as the refractive index becomes great.
Inventors:
NODA SATOSHI
Application Number:
JP28089789A
Publication Date:
September 30, 1997
Filing Date:
October 27, 1989
Export Citation:
Assignee:
ORINPASU KOGAKU KOGYO KK
International Classes:
C03C3/00; G02B9/00; C03C4/00; G02B1/00; G02B3/00; (IPC1-7): G02B3/00
Domestic Patent References:
| JPS58125632A | ||||
| JPS5891044A | ||||
| JPS57601A | ||||
| JPS606295A | ||||
| JPS58120539A |