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Device and method for pre-compensating a fast tunable lens

A technology of lens and compensation control, applied in the direction of lens, optics, instrument, etc., can solve the problem that it is not enough to ensure the high-quality deployment of MFD system

Active Publication Date: 2020-03-24
HUAWEI TECH CO LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

However, these measures are not enough to guarantee high-quality deployment of MFD systems

Method used

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  • Device and method for pre-compensating a fast tunable lens
  • Device and method for pre-compensating a fast tunable lens
  • Device and method for pre-compensating a fast tunable lens

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Embodiment Construction

[0047] In the prior art, a multifocal plane display (MFD) optical system is related to a near-eye display (NED) or a near-to-eye (NTE) application or device. figure 1 An example of such a device 100 is shown. MFD implementations can be classified into spatial multiplexing technology and temporal (temporally / time) multiplexing technology. in targeting figure 1 In the time-multiplexing system shown in device 100, the viewing distance from a single 2D display to the eye is rapidly switched while rendering frames for multiple focal planes to create a flicker-free perception. The device 100 uses an ultra-high-speed display element 102 such as a Digital Micromirror Device (DMD) or a Ferroelectric Liquid Crystal on Silicon (FLCoS) to sequentially display color images at a flicker fusion threshold speed (≥60 Hz frame rate) . The high-speed focus modulator (or zoom) element 103 uses variable power lenses to continuously adjust or modulate the focus or optical power, such as electr...

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Abstract

The present invention provides a multifocal display device (300), comprising a focus tunable lens, FTL, (103) and a controller (400) configured to shift a focus of the FTL (103) from a first focal plane to a second focal plane by applying a compensated control signal (402) to the FTL. The controller (400) is configured to generate a current compensated control signal value, which is a value of thecompensated control signal (402) for a current point in time, based on one or more previous compensated control signal values, which are values of the compensated control signal at one or more previous points in time.

Description

technical field [0001] The present invention relates to a device and method for controlling a rapidly adjustable lens. In particular, the device and method aim to enhance the optical response and frequency response of a rapidly tunable lens in an optical system such as a Multifocal Plane Display (MFD). Background technique [0002] Recently, multi-focal plane near-eye displays (MFDs) have emerged as one of the preferred practical means to alleviate visual discomfort when viewing 3D content using head-mounted displays, thus providing true volumetric 3D imaging. Traditional near-eye displays (NEDs) are based on stereoscopic 3D displays that render depth perception of 3D scenes from pairs of 2D perspective views with binocular parallax at a fixed distance (focal plane) from the viewer. This creates an unnatural viewing condition due to Vergence-Accommodation Conflict (VAC) with undesirable consequences such as visual discomfort, fatigue or distortion of depth perception. [0...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): H04N13/322H04N13/398
CPCH04N13/332H04N13/322H04N13/398G02B3/14
Inventor 阿塔纳斯·波夫赫克托·纳瓦罗·弗鲁克托索班基·塞蒂亚万
Owner HUAWEI TECH CO LTD