Light modulation assembly, light source device and head-mounted display equipment

• Main Authors: ZHAO PENG, ZHANG XIANPENG, PARK YEON YOUNG, LI YI
• Format: Patent
• Language: Chinese; English
• Published: 14.02.2023
• Subjects: OPTICAL ELEMENTS, SYSTEMS, OR APPARATUS; OPTICS; PHYSICS

The utility model discloses a light modulation assembly, a light source device and head-mounted display equipment, and relates to the technical field of illumination and display. The light modulation assembly comprises a holographic grating and a light modulator, and the holographic grating comprises an inner side holographic grating subsection and a peripheral holographic grating subsection; the inner side holographic grating subsection is used for diffracting the part, entering the inner side holographic grating subsection, of the incident light received by the holographic grating into first diffracted split light, wherein the cross section light spot of the first diffracted split light has a preset light spot shape, and the first diffracted split light is emitted to the display area; and the peripheral holographic grating part is arranged around the periphery of the inner side holographic grating part and is adjacent to the periphery of the inner side holographic grating part, and the peripheral holographi