Apparatus for activating light-emitting element

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	Apparatus for activating light-emitting element
其他题名	Apparatus for activating light-emitting element
	KAWANA TAKASHI
	1992-03-17
专利权人	CANON INC
公开日期	1992-03-17
授权国家	日本
专利类型	发明申请
摘要	PURPOSE:To prevent light-emitting elements from being destroyed due to driving current or the life time thereof being shortened by causing the value of the resistance of a bypass circuit to be changed by combining a plurality of fixed resistors. CONSTITUTION:Resistors R14, R13 and R12, and a capacitor C2 are connected in series in this order, so that any one of a terminal A of resistor R14, a node B of resistor R14 and resistor R13, a node C of resistor R13 and resistor R12 can be connected to the anode of a laser diode With such a construction, when a light emission threshold value current is large and a driving current is small, node A is connected to the anode of the laser diode When a light emission threshold value current is small and a driving current is small, a terminal C is connected to the anode of the laser diode As a result. even if a driving current differs to obtain a predetermined laser output, overshoot can always be suppressed to a minimum, causing no delay to an extent more than required.
其他摘要	用途：通过组合多个固定电阻器来改变旁路电路的电阻值，从而防止发光元件因驱动电流或其寿命缩短而损坏发光元件。组成：电阻R14，R13和R12，和电容C2按此顺序串联连接，以便电阻R14的A端，电阻R14的节点B和电阻R13中的任何一个，电阻R13的节点C和电阻器R12可以连接到激光二极管1的阳极。利用这种结构，当发光阈值电流大并且驱动电流小时，节点A连接到激光二极管1的阳极。发光阈值电流小且驱动电流小，端子C连接到激光二极管1的阳极。结果。即使驱动电流不同以获得预定的激光输出，也总是可以将过冲抑制到最小，从而不会导致超过所需的延迟。
主权项	-
申请日期	1990-07-27
专利号	JP1992084476A
专利状态	失效
申请号	JP1990197996
公开（公告）号	JP1992084476A
IPC 分类号	B41J2/44 \| H01L33/00 \| H01S5/042 \| H01S3/096
专利代理人	-
代理机构	-
文献类型	专利
条目标识符	http://ir.opt.ac.cn/handle/181661/59679
专题	半导体激光器专利数据库
作者单位	CANON INC
推荐引用方式 GB/T 7714	KAWANA TAKASHI. Apparatus for activating light-emitting element. JP1992084476A[P]. 1992-03-17.

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