Apparatus for driving semiconductor laser
文献类型：专利
| 作者 | OKINO YOSHIHARU |
| 发表日期 | 1991-09-24 |
| 专利号 | JP1991216363A |
| 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 | Apparatus for driving semiconductor laser |
| 英文摘要 | PURPOSE:To stabilize an image forming beam shape and to improve the gradation continuity of a highlight part by using a pulse width modulation system in combination with a pulse amplitude modulation system to realize multigradation and using only a laser beam emitting region. CONSTITUTION:A pulse width modulation signal SP being a binary signal is introduced into the control terminal 43 of a synthesizing circuit 16 and the common terminal 38 of an analogue switch 36 is connected to a terminal during the low level period of the signal introduced into the control terminal 43 and connected to a terminal 42 during the high level period of the signal. Therefore, as a synthesizing signal Ss, an amplitude modulation signal Sm is introduced into an LD driving part 22 at the exposure time Tn of the low level period and an amplitude modulation signal Sm+1 is introduced into the LD driving part 22 at the exposure time Tn+1 of the high level period. A laser diode LD is driven by the output signal of the LD driving part 22 based on the synthesizing signal Ss and a film F is exposed and recorded by the output beam L of the laser diode LD. |
| 公开日期 | 1991-09-24 |
| 申请日期 | 1990-01-22 |
| 状态 | 失效 |
| 源URL | [http://ir.opt.ac.cn/handle/181661/69087]  |
| 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. Apparatus for driving semiconductor laser. JP1991216363A. 1991-09-24. |
入库方式： OAI收割
来源：西安光学精密机械研究所
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