Projection reader
- 1、下载文档前请自行甄别文档内容的完整性，平台不提供额外的编辑、内容补充、找答案等附加服务。
- 2、"仅部分预览"的文档,不可在线预览部分如存在完整性等问题,可反馈申请退款(可完整预览的文档不适用该条件!)。
- 3、如文档侵犯您的权益，请联系客服反馈,我们会尽快为您处理(人工客服工作时间：9:00-18:30)。
专利名称：Projection reader
发明人：TATSUOKA MASAMICHI,立岡 正道,TOYONO TSUTOMU,豊野 勉
申请号：JP特願昭59-243947
申请日：19841119
公开号：JP特公平6-27908B2
公开日：
19940413
专利内容由知识产权出版社提供
摘要：PURPOSE:To reduce a vignetting generated by a Fresnel lens with a luminous flux from an original picture by placing a field lens by shifting it from the position of an image of the first image forming optical system forming an intermediate image of the original picture. CONSTITUTION:By the first optical means 12 for projecting an original picture 11, and the second optical means 15 for forming its projected image on a read means 16, a magnified image of said original picture 11 is formed on the read means 16, and also a Fresnel lens 13 operated as a field lens placed between said first optical means 12 and the second optical means 15 is placed by shifting it from a position 14 where the image of the original picture 11 is formed by the first optical means 12.
申请人：CANON KK,キヤノン株式会社
地址：東京都大田区下丸子3丁目30番2号
国籍：JP
代理人：丸島 儀一
更多信息请下载全文后查看