Solid light source, projecting system and bundling lighting fixture employing the device

Abstract

The invention discloses a solid state light source device, a projection system and a gathering illumination lamp adopting the device. The solid state light source comprises a hollow optical component. Air, vacuum or other light transmission media are included in the cavity of the optical component, a light-emitting window is arranged on the optical component in polyhedron shape; at least a light-entering window is arranged on the optical component, at least a light conducting prism is arranged corresponding to the light-entering window, a solid state luminescence component is arranged corresponding to the bottom side of the light conducting prism, reflection parts are positioned in the optical component or both in and out of the optical component, the light sent out by the solid state luminescence component is refracted or totally reflected by the light conducting prism, reflected by the reflection parts or directly emitted from the light-emitting window of the optical component. By fully utilizing the side wall of the optical component to be equipped with more solid state luminescence components, the device is capable of enlarging the effective light-emitting area of the solid state luminescence components, increasing the light output of light source under the condition of maintaining the same light-emitting window area; and all the light sent out by a plurality of solid state luminescence components is put together and educed toward the direction of the light-emitting window through the reflection part and the light conducting prism, which not only increases the light output but also educes light efficiently.

Description

technical field [0001] The invention relates to a light source device and its application, in particular to a solid-state light source device, a projection system using the device and a clustered lighting fixture. Background technique [0002] As a new type of high-brightness, long-life light source, solid-state light-emitting devices such as high-power LEDs (including OLEDs) have achieved considerable development in lighting and other application fields. The lack of projection light sources, but to apply LED and other solid-state light-emitting devices to projection systems, it is necessary to require the constituted light source to be an ideal point light source, but the illuminant of each LED is a semiconductor chip with a certain light-emitting area. It is essentially a small surface light source, and because the luminance of a single LED chip is limited, in order to achieve a large enough luminous flux, it is usually necessary to arrange multiple LED chips in an array, ...

AI Technical Summary

Problems solved by technology

However, there is a serious defect in the technical solution disclosed in this patent: the LED chip arranged in the rod-shaped optical member is not only the source of providing the light output of the light source, but also guides the emitted light from the inside of the rod-shaped optical member to the light-emitting end surface obstacles, because when the light emitted by the LED chip is repeatedly reflected and exported by the reflective surface inside the rod-shaped member, once the light hits the LED chip, it will be absorbed by the LED chip and repeatedly reflected and attenuated inside the chip, becoming chip heat loss

Therefore, in order to obtain more light output, more LED chips are arranged inside the rod-shaped member, but at the same time, more obstacles are set for the derivation of light, which reduces the efficiency of light derivation. The purpose of increasing the number of LEDs to greatly increase the light output of the light source

In addition, if figure 2 As shown, the luminous characteristics of the LED chip satisfy the "Lambertian distribution". Since the luminous energy of the LED chip is related to its emission angle, the smaller the emission angle, the greater the emission energy, and the larger the emission angle, the smaller the emission energy. In the technical solution disclosed in the above-mentioned patent, the smaller the emission angle of the light, the more reflection times it will experience inside the rod-shaped member, and the greater the probability of it being absorbed and lost by the LED chip

The final result is that when a large number of LED chips are arranged inside the rod-shaped member in order to seek high light output, only light with a small energy and a large emission angle can be more effectively exported from the light-emitting end surface, and the light export efficiency is very low. It is difficult to achieve the purpose of greatly increasing light production

Images