Endoscope including a reflector related by an inequality for uniform light distribution

摘要

A light transmitting device includes a light guide formed by a bundle of optical fibres. Light from a light source is passed through a condenser lens to impinge upon the incident end face of the light guide for transmission to the exiting end face thereof. A pipe-shaped reflector is disposed between the condenser lens and the light guide for achieving a uniform distribution of light intensity across the incident end face of the light guide.