Title:
LENS OPTICAL SYSTEM, IMAGE DISPLAY DEVICE AND HEAD-UP DISPLAY
Document Type and Number:
WIPO Patent Application WO/2011/077688
Kind Code:
A1
Abstract:
A lens optical system is provided with, in order from the object side, a first convex lens group (20) comprising multiple planarly disposed first convex lens elements (21), a second convex lens group (22) comprising multiple planarly disposed second convex lens elements (23), and a third convex lens group (24) comprising multiple planarly disposed third convex lens elements (25). The lens diameter and lens pitch of the convex lenses increase in the order of first convex lens group (20), second convex lens group (22), and third convex lens group (24). Further, the distance between the second convex lens group and the third convex lens group is greater than the distance between the first convex lens group and the second convex lens group.
Inventors:
NEMOTO, Hiroyuki (LIMITED 5-27, Mita 3-chome, Minato-k, Tokyo 21, 〒1086321, JP)
Application Number:
JP2010/007359
Publication Date:
June 30, 2011
Filing Date:
December 20, 2010
Export Citation:
Assignee:
NIPPON SHEET GLASS COMPANY, LIMITED (5-27, Mita 3-chome Minato-k, Tokyo 21, 〒1086321, JP)
日本板硝子株式会社 (〒21 東京都港区三田三丁目５番２７号 Tokyo, 〒1086321, JP)
日本板硝子株式会社 (〒21 東京都港区三田三丁目５番２７号 Tokyo, 〒1086321, JP)
International Classes:
G02B27/18; B60K35/00; G02B3/00; G02B27/01
Attorney, Agent or Firm:
MORISHITA, Sakaki (2-11-12, Ebisu-Nishi Shibuya-k, Tokyo 21, 〒1500021, JP)
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