Image exposure device
文献类型:专利
作者 | OKINO YOSHIHARU |
发表日期 | 1990-05-17 |
专利号 | JP1990129625A |
著作权人 | FUJI PHOTO FILM CO LTD |
国家 | 日本 |
文献子类 | 发明申请 |
其他题名 | Image exposure device |
英文摘要 | PURPOSE:To precisely control light quantity by a simple constitution by providing a step wedge filter that is formed to switch stepwise the density deciding a light transmissive quantity on an optical path of different wavelength and controlling light transmissive quantity. CONSTITUTION:The step wedge filter 4 is arranged on the optical path of a laser beam 3. This step wedge filter 4 has a construction that color density is separated into 3 stages, for example, 4a-4c and a filter driving circuit 5 changes the light transmissive quantity at the three stages digitally. The laser beam passing through the step wedge filter 4 is detected by an SOS sensor 6. A photoelectrically converted detector signal V2 is impressed on a sample-hole circuit 7 and the level of the detector signal V2 is maintained in prescribed time. The detector signal V2 is supplied to a driving circuit 1 and the quantity of light from a laser diode 2 is controlled correctly. Thereby, the quantity of light from a power source is controlled by the simple and inexpensive construction. |
公开日期 | 1990-05-17 |
申请日期 | 1988-11-09 |
状态 | 失效 |
源URL | [http://ir.opt.ac.cn/handle/181661/59593] ![]() |
专题 | 半导体激光器专利数据库 |
作者单位 | FUJI PHOTO FILM CO LTD |
推荐引用方式 GB/T 7714 | OKINO YOSHIHARU. Image exposure device. JP1990129625A. 1990-05-17. |
入库方式: OAI收割
来源:西安光学精密机械研究所
浏览0
下载0
收藏0
其他版本
除非特别说明,本系统中所有内容都受版权保护,并保留所有权利。