Illumination system and projection device

By using the lighting system of the first light source and the second light source, the combined light module and the wavelength conversion element in the projector, the problem of excessive volume when providing infrared light is solved, and the provision of infrared light without adding optical lenses is achieved, and the existing organic type can be upgraded.

CN119717375AActive Publication Date: 2025-03-28CORETRONIC CORPORATION
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Patent Information

Application Number
CN202311246508.5
Authority / Receiving Office
CN · China
Patent Type
Applications(China)
Current Assignee / Owner
Filing Date
2023-09-26
Publication Date
2025-03-28
Estimated Expiration
2043-09-26

AI Technical Summary

Technical Problem

Existing projectors need to add an additional infrared light source when providing infrared light, and cannot be configured in the same optical path as the main light source, resulting in too large volume and the inability to share the existing housing.

Method used

Using an illumination system including a first light source, a second light source, a combined light module and a wavelength conversion element, the first light source provides a laser beam, and the second light source provides an infrared beam, and the two beams of light are transmitted along the same path through the combined light module and the wavelength conversion element, and an excited beam is generated through the wavelength conversion material layer and the spectroscopic layer to achieve the provision of infrared light.

Benefits of technology

There is no need to add additional optical lenses to maintain a good size, can provide additional infrared light for different fields of applications, and can upgrade existing projector devices to use existing housings.

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Abstract

A lighting system comprises a first light source, a second light source, a light combining module and a wavelength conversion element. The first light source provides a first light beam. The second light source provides a second light beam. A wavelength range of the first beam is different from a wavelength range of the second beam. The light combining module is arranged on a transmission path of a first light beam from the first light source and a second light beam from the second light source. The wavelength conversion element comprises a turntable, a wavelength conversion material layer and a light splitting layer. The light splitting layer is disposed on the turntable, and the wavelength conversion material layer is disposed between the turntable and the light splitting layer. The wavelength conversion material layer is used for converting the first light beam into an excited light beam. The light splitting layer is used for reflecting the second light beam and allowing the first light beam and the excited light beam to pass through. In this way, infrared light is additionally provided under the condition that the good size is maintained.
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