Sunlight lead-in daylighting device

Abstract

The invention discloses a sunlight lead-in daylighting device, which comprises a light detector, a signal processing part, a lead-in optical fiber part and a mechanical transmission part for driving, which are assembled together, wherein the light detector comprises a fine tracking sensor, a coarse tracking sensor and a small diameter lens arranged in the center of the top of the detector; the coarse tracking sensor consists of four sensitive silicon photocells or photoresistors, which are distributed on four vertexes of an inscribed square of the top of the detector and take the top center of the detector as the center of a circle, and form 45-degree included angles against the top plane of the detector; the fine tracking sensor is a 4-quadrant detector; and the distance between the small diameter lens and the 4-quadrant detector is slightly smaller than the focal distance of the lens. The device utilizes a full photoelectric tracking mode to realize the wide-range, high-precision and cheap focus tracking of sunlight so as to realize the daylighting.

Description

technical field [0001] The invention relates to a device for introducing sunlight into daylighting and illumination, in particular to a device for introducing sunlight into daylighting that can automatically or manually track and focus a solar light source for optical fiber lighting. Background technique [0002] The sunlight introduction technology using optical fiber as a transmission medium has existed for many years, but it has not been popularized because of high price or poor performance. The cost of the technology is centered on tracking sunlight and the fiber optics used for transmission. There are two main tracking methods for the sun tracking device. One is the high stability and high precision method, which calculates the annual orbit of the sun according to the law of the earth's orbit around the sun. A "photoelectric sensor" is installed in the center, which is a hybrid tracking mode of sun trajectory calculation combined with photoelectric tracking. Japan’s “...

AI Technical Summary

Problems solved by technology

[0004] The purpose of the present invention is to provide a sunlight-introducing light-collecting device, which uses full photoelectric tracking mode to realize large-scale, high-precision, and cheap tracking and focusing on sunlight in sunny days, so as to solve the technical problem of expensive high-precision tracking

[0005] The present invention also solves the problem of high cost of optical fiber, uses plastic optical fiber to greatly reduce cost, enables efficient coupling of high-energy sunlight and plastic optical fiber, does not disperse, and ensures the safety of sunlight transmission in it

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