Near-to-eye display device

A near-eye display and display technology, applied in instruments, optics, optical components, etc., can solve problems such as fatigue, adjustment conflicts, vergence conflicts, etc.

Pending Publication Date: 2022-06-24
BOE TECH GRP CO LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

[0004] Currently used VR display devices, the focal length of the display screen is fixed. When the human eye observes the display screen, it focuses on the same image plane for a long time, which conflicts with the adjustment of the brain to the optic nerve. When the human eye continues to watch such a display screen for too long, it will Fatigue and dizziness can occur, resulting in vergence conflicts

Method used

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Embodiment Construction

[0049] In order to make the above objects, features and advantages of the present invention more clearly understood, the present invention will be further described below with reference to the accompanying drawings and embodiments. Example embodiments, however, can be embodied in various forms and should not be construed as limited to the embodiments set forth herein; rather, these embodiments are provided so that this disclosure will be thorough and complete, and will fully convey the concept of example embodiments to those skilled in the art. The same reference numerals in the drawings denote the same or similar structures, and thus their repeated descriptions will be omitted. The words expressing position and direction described in the present invention are all described by taking the accompanying drawings as examples, but changes can also be made as required, and the changes are all included in the protection scope of the present invention. The accompanying drawings of th...

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Abstract

The invention discloses a near-to-eye display device, and the device comprises a display screen which is used for displaying a first image and a second image in a time-sharing manner; the polarization converter is used for converting emergent light of the display screen into first circularly polarized light; the imaging lens group is used for imaging an image displayed by the display screen; the semi-transparent and semi-reflective layer is located between the polarization converter and the first lens; the reflection polarization layer is located on the side, deviating from the polarization converter, of the semi-transparent and semi-reflective layer and used for reflecting the first linearly polarized light and transmitting the second linearly polarized light, and the polarization directions of the first linearly polarized light and the second linearly polarized light are perpendicular to each other; and the liquid crystal lens is positioned between the semi-transparent and semi-reflective layer and the reflective polarization layer. When the liquid crystal lens is switched between the first phase retardation and the second phase retardation, the light path of the light in the near-to-eye display device is changed, so that the near-to-eye display device can image at two focal lengths, the human eyes can watch an image with a certain depth of field, a three-dimensional display effect is achieved, and convergence conflicts are avoided.

Description

technical field [0001] The present invention relates to the field of display technology, and in particular, to a near-eye display device. Background technique [0002] Near-eye display is currently a hot research topic, such as helmet-shaped virtual reality display and smart glasses-shaped augmented reality display. Near-eye display can provide people with an unprecedented sense of interaction, and has important application value in many fields such as telemedicine, industrial design, education, military virtual training, and entertainment. [0003] Virtual reality (Virtual Reality, VR for short) technology presents a fully enclosed virtual environment, and creates an immersive viewing experience in a three-dimensional environment with the help of display modules. The display principle is that the left and right eye screens display images of the left and right eyes respectively, and the human eye generates a three-dimensional sense in the mind after obtaining this informati...

Claims

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Application Information

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IPC IPC(8): G02B27/01G02B30/50
CPCG02B27/0172G02B30/50G02B2027/0178G02F1/13362G02F1/133536G02F1/133526G02F1/133638G02F1/133541
Inventor 周振兴洪涛徐成福
Owner BOE TECH GRP CO LTD
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