专利汇可以提供Overhead projector专利检索,专利查询,专利分析的服务。并且PURPOSE: To project conference materials or the like immediately without printing pictures on a transparent film to generate originals neither interrupting the conference or the like by providing a reader and a liquid crystal optical shutter in an overhead projector to generate originals of overhead projector.
CONSTITUTION: A picture drawn on an original drawing 2 is read by a reader 3, and a liquid crystal optical shutter 7 (shutter part) is controlled to open and close in accordance with read data to project the picture of the original drawing 2 on a screen 12. Thus, it is unnecessary that the picture is printed temporarily on the transparent film in a conventional manner for the purpose of obtaining the picture of the original drawing 2. The picture on the original drawing 2 is projected on the screen 12 simultaneously with read of the picture on the original drawing 2.
COPYRIGHT: (C)1987,JPO&Japio,下面是Overhead projector专利的具体信息内容。
标题 | 发布/更新时间 | 阅读量 |
---|---|---|
光学模组的封装结构及其封装方法 | 2020-05-11 | 685 |
一种平面180°发光的贴片LED | 2020-05-13 | 815 |
导光组件、光准直组件、背光模组及显示装置 | 2020-05-16 | 596 |
一种显示面板及其制作方法、显示装置 | 2020-05-11 | 681 |
指纹识别的装置和电子设备 | 2020-05-15 | 197 |
电容触控模组及显示屏 | 2020-05-15 | 663 |
触控面板及其制备方法 | 2020-05-08 | 651 |
LED光源及背光模组 | 2020-05-15 | 699 |
一体式触控黑板 | 2020-05-13 | 562 |
一种背光模组和显示装置 | 2020-05-16 | 628 |
高效检索全球专利专利汇是专利免费检索,专利查询,专利分析-国家发明专利查询检索分析平台,是提供专利分析,专利查询,专利检索等数据服务功能的知识产权数据服务商。
我们的产品包含105个国家的1.26亿组数据,免费查、免费专利分析。
专利汇分析报告产品可以对行业情报数据进行梳理分析,涉及维度包括行业专利基本状况分析、地域分析、技术分析、发明人分析、申请人分析、专利权人分析、失效分析、核心专利分析、法律分析、研发重点分析、企业专利处境分析、技术处境分析、专利寿命分析、企业定位分析、引证分析等超过60个分析角度,系统通过AI智能系统对图表进行解读,只需1分钟,一键生成行业专利分析报告。