Solid state light source device

Abstract

The invention relates to a solid state light source device, which comprises a hollow optical component which has a cavity containing air, vacuum or other light-transmitting mediums. The optical component provided with a light outlet is polyhedron-shaped and is provided with at least one light inlet, at least one light guide prism corresponding to the light inlet, and a surface illuminator corresponding to the bottom surface of the light guide prism. Reflection parts are arranged inside the optical component or inside and outside the optical component. A frustum-shaped light guide part of which the light incident area is larger than the light emergent area is arranged between the light inlet of the optical component and the surface illuminator; and after passing through the frustum-shaped light guide part, the light emitted by the surface illuminator is refracted or completely reflected by the light guide prism, and then is reflected by the reflection parts or directly emitted via the light outlet. As the frustum-shaped light guide part of which the light incident area is larger than the light emergent area is arranged between the light inlet of the optical component and the surface illuminator, the solid state light source device can enlarge the effective light-emitting area of the surface illuminator without changing the sizes of the optical component and the light inlet.

Description

technical field [0001] The present invention relates to light source devices, and more particularly to an improved solid state light source device. 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, or use a larger size LED surface illuminant. While the luminous f...

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Problems solved by technology

[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, or use a larger size LED surface illuminant. While the luminous flux is multiplied, the luminous area of ​​the light source is also multiplied accordingly. When the luminous area of ​​the light source is larger, the imaging light efficiency of the corresponding projection imaging optical system is lower. The output flux (luminous brightness) is difficult to work hard, which is the main technical obstacle to apply solid light sources such as high-power LEDs to projection systems

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