Patent ID: 11971557
Assignee: BEIJING XIAOMI MOBILE SOFTWARE CO., LTD.
Field: Audio-visual technology (Electrical engineering)
Classification: CPC G  H | IPC G  H

Claim 1:
2. The apparatus of claim 1, wherein: the incident surface is located on the optical path of the incident light, and configured to transmit the incident light; a first light splitting reflection layer is disposed on the first surface, and the incident light is split through the first light splitting reflection layer to form the first light with the first waveband along part of a first optical path after the first light splitting reflection layer and a fourth light with a fourth waveband along a fourth optical path; a second light splitting reflection layer is disposed on the second surface, and the fourth light with the fourth waveband is split through the second light splitting reflection layer to form the second light with the second waveband split along part of a second optical path after the second light splitting reflection layer and the third light with the third waveband reflected along part of a third optical path after the second light splitting reflection layer; and the third light with the third waveband is reflected by the second light splitting reflection layer and emit from the incident surface along a direction reverse to an incident direction of the incident light.