Prismenstruktur, Optisches System, Optische Anzeigevorrichtung und Endgerätevorrichtung

Details

Veröffentlichungs-Nr.

EP4741886

Anmeldetag

29. Juli 2024

Veröffentlichung

13. Februar 2025

Rechtsraum

EP

IPC

G02B5/04, G02B27/01

Abstract

A prism structure (620), an optical system (320), an optical display apparatus (300), and a terminal device are disclosed, to enhance contrast of imaging of a projection lens (340 or 640). The optical system (320) includes the prism structure (620). The prism structure (620) includes a first layer (Q1), a second layer (Q2), and a third layer (Q3) that are sequentially stacked. A fourth side surface (L<24>) of the second layer (Q2) is blackened. The first layer (Q1) is configured to guide an illumination light beam into the second layer (Q2) or guide out a non-projection light beam. The second layer (Q2) is configured to: guide the illumination light beam into a display chip (630), reflect a projection light beam reflected from the display chip (630) to the third layer (Q3), and guide a non-projection light beam reflected from the display chip (630) to a third side surface or guide a non-projection light beam reflected from the display chip (630) to the first layer (Q1). The third layer (Q3) is configured to guide the projection light beam into the projection lens (340 or 640). The non-projection light beam is guided to a blackened prism surface for absorption or is guided out from the prism structure (340), so that the non-projection light beam in the optical system (320) can be effectively suppressed, a probability that the non-projection light beam enters the projection lens (340 or 640) to participate in imaging is reduced, and projection contrast is enhanced.

Anmelder

Firmen

Yinwang Intelligent Technologies Co., Ltd.
Shenzhen Yinwang Intelligent Technologies Co., Ltd.

Land

🇨🇳 China

Fachgebiete