US 12,228,726 B1
Lens group, and near-to-eye display device
Shang-Yu Huang, Hsinchu (TW); and Yu-Mei Kuo, New Taipei (TW)
Assigned to Interface Advanced Technology (Chengdu) Co., Ltd., Chengdu (CN)
Filed by Interface Advanced Technology (Chengdu) Co., Ltd., Chengdu (CN)
Filed on May 10, 2024, as Appl. No. 18/661,034.
Application 18/661,034 is a continuation in part of application No. PCT/CN2023/138540, filed on Dec. 13, 2023.
Claims priority of application No. 202311695784.X (CN), filed on Dec. 8, 2023.
Int. Cl. G02B 25/00 (2006.01)
CPC G02B 25/001 (2013.01) 20 Claims
OG exemplary drawing
 
1. A lens group comprising: a first lens; a transflective film; a second lens; a composite film; a third lens; and a fourth lens,
wherein:
the first lens comprises a first surface and a second surface,
the second lens comprises a third surface and a fourth surface, the third surface faces to the second surface,
the transflective film is attached to the third surface and the composite film is attached to the fourth surface; the composite film comprises a phase retardation layer and a reflective polarizing layer; the phase retardation layer is attached to the fourth surface,
the third lens comprises a fifth surface and a sixth surface, the fifth surface faces to the fourth surface, and
the fourth lens comprises a seventh surface and an eighth surface, the seventh surface faces to the sixth surface.