光学部材およびこれを使用した照明装置

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专利权人:

国立大学法人三重大学;ＪＳＲ株式会社

发明人:

平松 和政,元垣内 敦司,芹口 祐太,井上 幸治,吉野 裕之

申请号：

JP20110241325

公开号：

JP6057272(B2)

申请日:

2011.11.02

申请国别(地区):

日本

年份:

2017

代理人:

摘要：

PROBLEM TO BE SOLVED: To provide a concave lens and an illumination device using the same with small energy consumption such as an LED and capable of having a display section of a great area irradiated at almost uniform distribution of illuminance over a wide range by effectively using light energy with high directivity.SOLUTION: The concave lens is characterized by having numerous triangular shaped protrusions 16a, 16b, 16c, 16d... with the same height h as a section in the radial direction going through the center formed in the radial direction on one surface of a transparent substrate 14 transmitting light.

来源网站：

中国工程科技知识中心

来源网址：

http://www.ckcest.cn/home/