Semiconductor laser beam scanning device
文献类型：专利
| 作者 | HORIKAWA, KAZUO; WATANABE, HIDEO |
| 发表日期 | 1991-09-04 |
| 专利号 | EP0165060B1 |
| 著作权人 | FUJI PHOTO FILM CO., LTD |
| 国家 | 欧洲专利局 |
| 文献子类 | 授权发明 |
| 其他题名 | Semiconductor laser beam scanning device |
| 英文摘要 | A semiconductor laser beam scanning device includes a plurality of semiconductor lasers (11, 12, 13, 14) for emitting respective primary laser beams (41, 42, 43, 44) which are combined into a single laser beam (45) to scan a desired surface (7). The power of the combined laser beam (45) is detected by a laser beam energy detector (52) which applies a laser beam energy signal (P) to a laser drive/control circuit (51). Alternatively, the laser beam energy signal (P) is applied to a comparator (46) which compares the laser beam energy signal with a reference signal (Sr) and issues a difference signal (H/L) to a control circuit (56) connected to a laser drive circuit (55). The laser drive/control circuit (51) for the control circuit (56) is responsive to the applied signal for controllably energizing at least one (14) of the semiconductor lasers to control the power of the laser beam (44) emitted therefrom thereby to keep the power of the combined laser beam (45) at a constant level. The laser beam energy detector (52) may be disposed adjacent to the surface (7) to be scanned for detecting the power of the combined laser beam in each scanning cycle, or may detect a laser beam (87a) divided from the combined laser beam (87) by a beam splitter (92) disposed on a beam path for the combined laser beam. |
| 公开日期 | 1991-09-04 |
| 申请日期 | 1985-06-12 |
| 状态 | 失效 |
| 源URL | [http://ir.opt.ac.cn/handle/181661/33247]  |
| 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 | HORIKAWA, KAZUO,WATANABE, HIDEO. Semiconductor laser beam scanning device. EP0165060B1. 1991-09-04. |
入库方式： OAI收割
来源：西安光学精密机械研究所
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