Short-distance optical amplification module and near-eye display optical module using the same

• US 9,759,915 B2
• Filed: 11/23/2015
• Issued: 09/12/2017
• Est. Priority Date: 07/13/2015
• Status: Active Grant

• Current Assignee: Shenzhen Dlodlo Technologies Co., Ltd.
• Original Assignee: Shenzhen Dlodlo Technologies Co., Ltd.
• Inventors: Tang, Weiping, Li, Gang, Zhang, Fengxue, Xiong, Xu
• Primary Examiner(s): Shafer, Ricky D
• Application Number:
  US14/949,262
• Publication Number:
  US 20170017078A1
• Time in Patent Office: 659 Days
• Field of Search: 35948501, 35948907, 359631, 359634
• CPC Class Codes: G02B 2027/0116 comprising devices for correcting chromatic aberration
• CPC Class Codes: G02B 2027/0118 comprising devices for improving the contrast of the display / brillance control visibility
• CPC Class Codes: G02B 2027/0123 comprising devices increasing the field of view
• CPC Class Codes: G02B 2027/013 comprising a combiner of particular shape, e.g. curvature
• CPC Class Codes: G02B 27/0101 characterised by optical features G02B27/0172 takes precedence
• CPC Class Codes: G02B 27/0172 characterised by optical features
• CPC Class Codes: G02B 27/283 used for beam splitting or combining
• CPC Class Codes: G02B 27/286 for controlling or changing the state of polarisation, e.g. transforming one polarisation state into another G02B5/3083 takes precedence; light guide coupling means utilising polarising elements G02B6/34
• CPC Class Codes: G02B 5/003 Light absorbing elements
• CPC Class Codes: G02B 5/3083 Birefringent or phase retarding elements G02B5/3008, G02B5/3016 take precedence; systems for polarisation control G02B27/286; manufacturing phase modulating patterns by lithographic processes G03F7/001

Abstract

A short-distance optical amplification module and a near-eye display optical module using the same in the present invention relates to an optical amplification module applicable for short distance and an optical module using the same for near-eye display. The purpose of the present invention is to provide an optical amplification module for large-multiple amplification within a short distance (less than 5 cm) and a near-eye display optical module using the same to achieve super large field of view within a short distance (less than 3 cm). The short-distance optical amplification module in the present invention comprises a first 45 degree phase delay sheet (2), a partial-transmission and partial-reflection curved lens (4), a second 45 degree phase delay sheet (5) and a reflective polarizing sheet (6) which are sequentially arranged. The near-eye display optical module in the present invention comprises a display screen (1) disposed on the side of the first 45 degree phase delay sheet (2) away from the partial-transmission and partial-reflection curved lens (4).

Claims

1. A near-eye display optical module, comprising a display screen (1), a first 45 degree phase delay sheet (2), a partial-transmission and partial-reflection curved lens (4), a second 45 degree phase delay sheet (5) and a reflective polarizing sheet (6), which are sequentially arranged, wherein an optical device with no effect on a light phase delay is disposed between the display screen (1) and the first 45 degree phase delay sheet (2), the partial-transmission and partial-reflection curved lens (4) is a plano-convex lens, and the optical device with no effect on the light phase delay is an optical module (3) for correcting hue variation.

2. The near-eye display optical module according to claim 1, wherein the display screen (1), the first 45 degree phase delay sheet (2), the partial-transmission and partial-reflection curved lens (4), the second 45 degree phase delay sheet (5) and the reflective polarizing sheet (6) are disposed coaxially.

3. The near-eye display optical module according to claim 2, wherein an axial side of the near-eye display optical module is coated with light absorption materials.