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Aligning system and aligning method of birefringent lens grating

A birefringent lens and grating technology, applied in optics, optical components, instruments, etc., can solve the problems of poor precision, low efficiency, and large investment requirements, and achieve the effects of high precision, high efficiency and simple alignment

Active Publication Date: 2016-07-06
NINGBO VISION DISPLAY TECH
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

[0005] The purpose of the present invention is to solve the problem of low efficiency and poor precision of the artificial method used in the alignment technology of the existing birefringent lens grating; the problem that the identification of the CCD image sensor requires relatively large equipment and requires a large investment, and provides an alignment of the birefringent lens grating Bit system and alignment method

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  • Aligning system and aligning method of birefringent lens grating
  • Aligning system and aligning method of birefringent lens grating
  • Aligning system and aligning method of birefringent lens grating

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specific Embodiment approach 1

[0027] Specific implementation mode one: the following combination Figure 3 ~ Figure 7 This embodiment is described. The alignment system of the birefringent lens grating in this embodiment includes a bracket 101, a backlight 102, a light-transmitting carrying device 103, a liquid crystal display screen, an alignment adjustment device 106, a birefringent lens grating 107, and an image acquisition system. Unit 108 and controller 109; the liquid crystal display screen includes a liquid crystal light valve 105 and a 2D display screen 104;

[0028] Bracket 101 includes a vertical bar and a top horizontal bar;

[0029] The light-transmitting carrying device 103 is arranged on the lower half of the vertical rod of the bracket 101, and the upper surface of the light-transmitting carrying device 103 carries a liquid crystal display; just below the light-transmitting carrying device 103, a backlight 102 is arranged;

[0030] The alignment adjustment device 106 is arranged in the midd...

specific Embodiment approach 2

[0039] Specific implementation mode two: the following combination Figure 3 ~ Figure 7 Describe this embodiment, the alignment method of the birefringent lens grating described in this embodiment, the method includes the following steps:

[0040] Step 1. The alignment adjustment device 106 is placed above the liquid crystal display with the birefringent lens grating 107, and the initial relative positions of the two are random;

[0041] Step 2, the controller 109 outputs an instruction to make the liquid crystal display display a light-shielding rectangular reference pattern, and the light-shielding rectangular reference pattern passes through the birefringent lens grating 107;

[0042] Step 3, the controller 109 receives the alignment deviation image information of the birefringent lens grating 107 and the liquid crystal display screen collected by the image acquisition unit 108, and the alignment deviation image information presents the relative positional relationship betw...

specific Embodiment approach 3

[0045] Specific Embodiment Three: This embodiment is a further description of Embodiment Two.

[0046] When the axial direction of the grating unit of the birefringent lens grating 107 is consistent with the length direction of the light-shielding rectangular reference pattern, adjust the angle θ to the actual grating inclination angle of the birefringent lens grating 107; When the length direction of the rectangular reference pattern is opposite, adjust the angle (90°-θ) to the actual grating inclination angle of the birefringent lens grating 107 .

[0047] When the axial direction of the grating unit of the birefringent lens grating 107 is consistent with the length direction of the light-shielding rectangular reference pattern, the light-shielding rectangular reference pattern is as follows: Figure 4 As shown, the target value of the included angle θ at this time is the actual grating inclination angle of the birefringent lens grating 107, first rotated to the target, as ...

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Abstract

The invention provides an aligning system and an aligning method of a birefringent lens grating, belongs to the technical field of stereo display and aims to solve the problems in the existing aligning technology of the birefringent lens grating that the efficiency and the precision of a manual mode are low and CCD image sensor identification is high in equipment requirement and large in investment. According to the scheme, by changing the on-off state of a liquid crystal light valve, the birefringent lens grating is controlled to present a 2D display state; a controller controls a liquid crystal display screen to display shading rectangular reference patterns; a collection image unit collects aligning deviation image information of the birefringent lens grating and the liquid crystal display screen, and the aligning deviation image information includes the transmitted shading rectangular reference patterns; and the collection image unit sends the collected aligning deviation image information to the controller, according to the aligning deviation image information, the controller drives an aligning adjusting device to work based on the shading rectangular reference patterns, the birefringent lens grating is adjusted to reach a target position, and the aligning of the birefringent lens grating and the liquid crystal display screen is completed.

Description

technical field [0001] The invention belongs to the technical field of stereoscopic display. Background technique [0002] The development of naked-eye 3D display technology has attracted widespread attention due to the improvement of viewing comfort and freedom and the broadening of application fields. Among various naked-eye 3D stereoscopic display technologies, birefringent lens gratings combined with liquid crystal light valve technology, which has both good 3D display functions and good 2D display quality and can realize free switching between 2D / 3D, has been widely valued by the industry. [0003] At present, common birefringent lens gratings are manufactured by filling a curable liquid crystal material with a cylindrical lens concave grating substrate, and performing high-temperature alignment and ultraviolet curing. see figure 1 and figure 2 Introduce the principle of 2D / 3D realization: For positive liquid crystals, the extraordinary refractive index n of liquid ...

Claims

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Application Information

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IPC IPC(8): G02B27/22G02B27/62
CPCG02B27/62G02B30/27
Inventor 顾开宇王华波
Owner NINGBO VISION DISPLAY TECH
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