Patent ID: 11962125
Assignee: APPOTRONICS CORPORATION LIMITED
Field: Optics (Instruments)
Classification: CPC H  G | IPC G  H

Claim 0:
1. A wavelength conversion device, comprising:
a substrate;
a first light-emitting portion provided on the substrate, wherein the first light-emitting portion comprises a first light guiding region and a counterweight region arranged on a same layer as the first light guiding region, the first light guiding region is configured to guide first light, and the counterweight region is configured to balance weight distribution of the wavelength conversion device into substantially uniform distribution, and wherein the first light guiding region comprises a diffuse reflection layer; and
a second light-emitting portion provided on a same side of the substrate as the first light-emitting portion, wherein the second light-emitting portion comprises a conversion region configured to convert at least a part of excitation light into excited light when the conversion region receives the excitation light, and configured to emit the excited light.