Large-field light freeform surface waveguide-type visual optical imaging device and near-eye display system comprising same

A technology of optical imaging and large field of view, applied in the field of visual display, can solve the problems that cannot meet the needs of display, and achieve the effect of improving immersion, wide observation field of view, and large exit pupil distance

Active Publication Date: 2019-10-25
ZHEJIANG UNIV
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  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

In recent years, with the development and popularization of various flat panel display technologies, pure real world information or virtual image information display can no longer meet people's needs for display.

Method used

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  • Large-field light freeform surface waveguide-type visual optical imaging device and near-eye display system comprising same
  • Large-field light freeform surface waveguide-type visual optical imaging device and near-eye display system comprising same
  • Large-field light freeform surface waveguide-type visual optical imaging device and near-eye display system comprising same

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Embodiment

[0026] According to the embodiment of the present invention, the visual optical imaging device for the binocular near-eye display system includes two left and right visual optical imaging devices. In the following, the visual optical imaging device on the left side will be used as the specific description object to illustrate the present invention A person skilled in the art can understand that the visual optical imaging device on the right side has the same structure as the left side, but the left and right are reversed.

[0027] Such as figure 1 As mentioned above, the left visual optical imaging device of the embodiment of the present invention includes a free-form surface waveguide element 11 and a projection optical assembly 12, the micro display element 13 is placed on the object side of the projection optical assembly 12, and the image emitted by the micro display element 13 The light sequentially passes through the polarization splitter prism 121, the first optical len...

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Abstract

The invention relates to a large-field light freeform surface waveguide-type visual optical imaging device and a near-eye display system comprising the same. The near-eye display system is formed by bilaterally symmetrically arranging two left and right same visual optical imaging devices, wherein each visual optical imaging device comprises a freeform surface waveguide element and a projection optical component; each projection optical component is used for projecting an image optical signal emitted from an image source element into the corresponding freeform surface waveguide element; and ahollow cavity is formed in the middle part of each freeform surface waveguide element, so that the weight of the waveguide elements is greatly reduced, light travels towards a pupil exit direction inthe freeform surface waveguide elements through the total reflection condition, exits through an emission surface after not meeting the total internal reflection condition and then enters eyes of a user, and meanwhile, the light in a transmission direction can be normally transmitted to directly enter human eyes, thereby achieving ultrathin light near-eye display.

Description

technical field [0001] The invention relates to the field of visual display technology, in particular to a light-weight free-form surface waveguide visual optical imaging device with a large field of view and a near-eye display system thereof. Background technique [0002] As an essential part of people's life, display technology has been playing an important role in various fields. In recent years, with the development and popularization of various flat panel display technologies, the simple display of real world information or virtual image information has been unable to meet people's needs for display. For richer visual perception effects, Augmented Reality (AR) technology emerges as the times require. [0003] Augmented reality technology is different from virtual reality technology that completely replaces the user's real-world environment. It is an interactive experience of the real-world environment in which objects residing in the real world are not replaced but are...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): G02B27/01G03B21/28G03B21/14
CPCG02B27/0101G03B21/142G03B21/28
Inventor 吴仍茂杨琳戴宜捷孙鹏丁章浩刘映利郑臻荣刘旭
Owner ZHEJIANG UNIV
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