Patent ID: 11921410
Assignee: APPOTRONICS CORPORATION LIMITED
Field: Optics (Instruments)
Classification: CPC G | IPC G

Claim 19:
20. A light source system, comprising:
a first light-emitting assembly configured to generate at least one primary light;
a second light-emitting assembly configured to generate excitation light;
a wavelength conversion device at least partially provided on an optical path of the excitation light and configured to receive the excitation light and generate excited light, wherein the wavelength conversion device has a scattering region and a wavelength conversion region;
an optical assembly provided on an optical path of the excited light and configured to increase etendue of the excited light before light combination of the at least one primary light and the excited light, to improve a ratio of etendue of the excited light to etendue of the at least one primary light and reduce loss of the excited light during the light combination; and
a light combination device provided on a common optical path of the at least one primary light and the excited light, located behind the optical assembly, wherein the light combination device has a central region and a surrounding region outside the central region,
wherein the central region of the light combination device is provided with a transmission region, and the surrounding region of the light combination device is provided with a reflective region, and wherein the at least one primary light is scattered and reflected by a scattering sheet in the scattering region of the wavelength conversion device, then passes through a first convergent lens so as to adjust its transmission direction, then passes through a second convergent lens, and is incident to a square rod and then homogenized by a square rod, and then is incident to the transmission region of the central region after being condensed by a mirror and a relay lens; or
the central region of the light combination device is provided with a reflective region, and the surrounding region of the light combination device is provided with a transmission region, and wherein the at least one primary light is scattered and reflected by a scattering sheet in the scattering region of the wavelength conversion device, then passes through a first convergent lens so as to adjust its transmission direction, then passes through a second convergent lens, and is incident to a square rod and then homogenized by a square rod, and then is incident to the reflective region of the central region after being condensed by a mirror and a relay lens.