COMPLEX TRANSFER SYSTEM FOR SUNLIGHT

PURPOSE:To enable the use of sunlight for illuminating a plurality of positions by providing a condensing device for condensing a part of collected sunlight at an aerial transmission route. CONSTITUTION:An aerial transmission route 2 is provided in a building 1, and a plane mirror 3 is so provided as to be inclined against the incident inlet of the route 2. As a result, straight sunlight is reflected with the plane mirror 3 and enters the aerial route 2. Also, not only the straight sunlight but also scattered light enters the route 2. In addition, a condensing device 4 such as a device comprising a concave lens is provided in the aerial transmission route 2 for condensing a part of collected light in the route 2. The sunlight condensed with the device 4 is transmitted to the predetermined position with a media intermediate transmission route 5. Of light collected in the route 2, the light not incidental to the device 4 is transmitted along the aerial transmission route 2 as a non-condensed light. According to the afore-said construction, the irradiation of a plurality of positions can be done by making different the transmission routes of various types of light.