Light source, wavelength conversion method, wavelength conversion device, and system for light source

摘要

A light source device includes a light emitting element and a wavelength conversion device. The wavelength conversion device includes a stationary member, a moveable carrier made of a transparent material carrying one or more wavelength conversion materials and moveable relative to the stationary member, and a stationary first filter. The first filter is fixed on the stationary member and disposed adjacent the moveable carrier. The excitation light from the light emitting element passes through the first filter and illuminates the wavelength conversion materials on the moveable carrier. The wavelength conversion materials convert the excitation light into converted light as the output of the light source device. The size of the first filter is smaller than the size of the moveable carrier and smaller than a carrying area of the moveable carrier that carries the wavelength conversion material. A wavelength conversion method using the wavelength conversion device is also described.

主权项

1. A wavelength conversion method, used in a light source device for generating and an output light, comprising:
providing a wavelength conversion device comprising a moveable carrier which carries one or more wavelength conversion materials; directing an excitation light from a light emitting element onto the wavelength conversion device, wherein a size of a light spot of the excitation light illuminating on the moveable carrier is smaller than a size of the moveable carrier, and wherein different segments of the moveable carrier are alternately illuminated by the light spot of the excitation light; directing a converted light generated by the wavelength conversion materials as the output light of the light source device; providing a stationary first filter fixedly disposed adjacent and parallel to the moveable carrier and located on an optical path between the light emitting element and the moveable carrier, wherein the first filter transmits the excitation light from the light emitting element and reflects the converted light from the wavelength conversion material, and wherein a size of the first filter is smaller than the size of the moveable carrier.