便携式内窥镜冷光源系统设计

摘要

Objective:To design a portable endoscope cold light source system. Methods:Using special LED as a cold light source, optical fiber astransmission medium, optical system design LED to the front end of the endoscope;with TPS61165 high currentdrive chip, STM32 generates a PWM signal, the control circuit design of LED;cooling system through the external embedding mode design of LED lighting. Results: After clinical testing, cold light source illumination of the design of the system is stable, high color rendering index, color temperature low, good heat dissipation effect. Conclusion:The design of the lighting system is very suitable for theuse of portable endoscope.%目的：设计一种便携式内窥镜的冷光源系统，以外接的方式为内窥镜提供高质量的照明。方法：采用特制的发光二极管(LED)作为冷光源，以光纤为传导介质，设计LED到内窥镜前端的光学系统；以TPS61165为大电流驱动芯片，芯片STM32产生PWM信号，设计LED的控制电路；通过外接镶嵌的方式设计LED照明的散热系统。结果：经过临床测试，冷光源系统照度稳定，显色指数高，色温低，散热效果好。结论：便携式内窥镜冷光源的照明系统非常适合便携式内窥镜的运用。