CN205809442U - A kind of integration imaging 3D display device of wide viewing angle - Google Patents

Abstract

The utility model discloses a kind of wide viewing angle integration imaging 3D display device, including display screen and gradual change pitch microlens array for showing micro-pattern matrix, in described gradual change pitch microlens array, be positioned at its horizontal pitch of the lens cells with string identical；Being positioned at its normal pitch of the lens cells with a line identical, its horizontal pitch is gradually increased to row edge from row center；In described micro-pattern matrix, the horizontal pitch of the lens cells that the horizontal pitch of image primitive is the most corresponding with normal pitch is identical with normal pitch.When using the integration imaging 3D display device imaging of gradual change pitch microlens array, level viewing visual angle is unrelated with the number of image primitive in micro-pattern matrix, thus the level viewing visual angle realizing integration imaging 3D display device increases.

Description

Wide-view-angle integrated imaging 3D display device

Technical Field

The utility model relates to an integrated formation of image 3D shows, in particular to integrated formation of image 3D display device at wide visual angle.

Background

The integrated imaging 3D display technology is a true 3D display technology without any vision-aid device. The technology has the characteristic of being watched by naked eyes, the recording and displaying processes are relatively simple, and the technology can display full-parallax and full-true-color stereo images, and is one of hot spot technologies in the current 3D display technology. However, the current integrated imaging 3D display device still has the disadvantages of narrow viewing angle, thereby limiting its practical application.

In an integrated imaging 3D display, the viewing volume is a common part of the imaging area of all image elements. As shown in fig. 1, at a viewing distance l, the horizontal viewing angle θ of the conventional integrated imaging 3D display is:

$\mathrm{\θ}=2\arctan \[\frac{p}{2f}-\frac{(m-1)p}{2l}\]$

wherein p is the horizontal pitch of the image elements, f is the focal length of the lens elements, and m is the number of image elements in the horizontal direction of the micro image array. In conventional integrated imaging 3D displays, the horizontal viewing angle is inversely proportional to the number of picture elements in the micro-image array.

SUMMERY OF THE UTILITY MODEL

An object of the utility model is to overcome current integrated formation of image 3D display device among the prior art and have the narrow problem of viewing angle, provide an integrated formation of image 3D display device with wideer horizontal visual angle.

In order to realize the purpose of the utility model, the utility model provides a following technical scheme:

An integrated imaging 3D display device with wide visual angle comprises a display screen and a gradual pitch micro-lens array; the display screen is used for displaying the micro-image array; the micro-lens array with the gradually changed pitch is placed in front of the display screen, and image elements in the micro-image array reconstruct a 3D scene through the lens elements in the micro-lens array with the gradually changed pitch; wherein,

in the micro lens array with the gradually changed pitches, the horizontal pitches of the lens elements positioned in the same column are the same; the lens elements in the same row have the same vertical pitch, and the horizontal pitch of the lens elements is gradually increased from the center of the row to the edge of the row;

the image elements in the micro-image array correspond to the lens elements in the gradient-pitch micro-lens array one by one, and the horizontal pitch and the vertical pitch of the image elements are respectively the same as the horizontal pitch and the vertical pitch of the corresponding lens elements.

Preferably, the display screen is one of a liquid crystal display screen, a plasma display screen and an organic electroluminescent display screen.

Compared with the prior art, the beneficial effects of the utility model are that: the wide-viewing-angle integrated imaging 3D display device is provided, in the gradual-change pitch micro-lens array, the horizontal pitches of the lens elements positioned in the same column are the same, the vertical pitches of the lens elements positioned in the same row are the same, and the horizontal pitches of the lens elements are gradually increased from the center of the row to the edge of the row; the horizontal pitch and the vertical pitch of the image elements in the micro-image array are respectively the same as the horizontal pitch and the vertical pitch of the corresponding lens elements. When the wide-view-angle integrated imaging 3D display device is used for imaging, the horizontal viewing view angle is irrelevant to the number of image elements in the micro image array, so that the horizontal viewing view angle of the integrated imaging 3D display device is increased.

Drawings

Fig. 1 is a schematic view of a horizontal viewing angle of an image formed by a conventional integrated imaging 3D display device;

fig. 2 is a wide viewing angle integrated imaging 3D display device according to the present invention;

fig. 3 is a schematic view of a horizontal viewing angle of the wide viewing angle integrated imaging 3D display device according to the present invention;

the labels in the figure are: 1. display screen, 2 traditional microlens array, 3 gradual change pitch microlens array, 4 the utility model discloses a micro-image array.

Detailed Description

The present invention will be described in further detail with reference to test examples and specific embodiments. However, it should not be understood that the scope of the above-mentioned subject matter is limited to the following embodiments, and all the technologies realized based on the present invention are within the scope of the present invention.

As shown in fig. 1, in existing integrated imaging 3D displays, the viewing volume is a common portion of the imaging area for all image elements. At the viewing distance l, the horizontal viewing angle θ of the conventional integrated imaging 3D display is:

$\mathrm{\θ}=2\arctan \[\frac{p}{2f}-\frac{(m-1)p}{2l}\]$

wherein p is the horizontal pitch of the image elements, f is the focal length of the lens elements, and m is the number of image elements in the horizontal direction of the micro image array. In conventional integrated imaging 3D displays, the viewing angle is inversely proportional to the number of picture elements in the micro-image array.

The embodiment provides an integrated imaging 3D display device with a wide viewing angle, as shown in fig. 2, comprising a display screen and a gradual pitch microlens array; the display screen is used for displaying the micro-image array; the micro-lens array with the gradually changed pitch is placed in front of the display screen, and image elements in the micro-image array reconstruct a 3D scene through the lens elements in the micro-lens array with the gradually changed pitch; wherein,

in the micro lens array with the gradually changed pitches, the horizontal pitches of the lens elements positioned in the same column are the same; the lens elements in the same row have the same vertical pitch, and the horizontal pitch of the lens elements is gradually increased from the center of the row to the edge of the row;

the image elements in the micro-image array correspond to the lens elements in the gradient-pitch micro-lens array one by one, and the horizontal pitch and the vertical pitch of the image elements are respectively the same as the horizontal pitch and the vertical pitch of the corresponding lens elements.

Specifically, the horizontal pitch H of the ith column of lens elements in the gradient-pitch micro-lens array_iComprises the following steps:

$\left\{\begin{array}{cc}{H}_i=p{\left(\frac{l+f}{l-f}\right)}^{\&lsqb;ceil\left(\frac{m}{2}\right)-i\&rsqb;}& 1\&le;i\&le;\frac{m}{2}\\ H_i=p{\left(\frac{l+f}{l-f}\right)}^{\&lsqb;i-floor\left(\frac{m}{2}\right)-1\&rsqb;}& \frac{m}{2}<i\&le;m\end{array}\right.$

wherein ceil () is rounded up, floor () is rounded down, i is a positive integer less than or equal to m, p is the horizontal pitch of the lens elements located at the center position of the graded-pitch microlens array, l is the viewing distance, f is the focal length of the lens elements, and m is the number of lens elements in the horizontal direction in the graded-pitch microlens array.

Specifically, at the optimal viewing position i, the horizontal viewing angle θ of the wide-viewing-angle integrated imaging 3D display device is:

$\mathrm{\&theta;}=2\arctan \left(\frac{p}{2f}\right)$

wherein p is the horizontal pitch of the lens element located at the center of the graded-pitch microlens array, and f is the focal length of the lens element.

In practical applications, the micro image array and the graded-pitch microlens array each include 11 × 11 units, where 11 units are in the horizontal direction, 11 units are in the vertical direction, the pitch of the lens elements located at the center of the graded-pitch microlens array is p equal to 5mm, the focal length of the lens elements is f equal to 5mm, and the viewing distance is l equal to 105mm, and then the horizontal pitches of the lens elements in the 1 st to 11 th columns are 8.05255mm, 7.3205mm, 6.655mm, 6.05mm, 5.5mm, 5mm, 5.5mm, 6.05mm, 6.655mm, 7.3205mm, and 8.05255mm, respectively. According to the formula:

$\mathrm{\&theta;}=2\arctan \left(\frac{p}{2f}\right)$

the horizontal viewing angle of the wide-viewing-angle integrated imaging 3D display device of the utility model is 54 degrees; whereas the horizontal viewing angle of a conventional integrated imaging 3D display with a lenticular element pitch of 5mm is 30. Consequently, the integrated formation of image 3D display device at wide visual angle has realized the integrated formation of image 3D of wide visual angle and has shown.

In this embodiment, the display panel is one of a liquid crystal display panel, a plasma display panel, and an organic electroluminescence display panel.

The above description is only exemplary of the present invention and should not be taken as limiting the scope of the present invention, as any modifications, equivalents, improvements and the like made within the spirit and principles of the present invention are intended to be included within the scope of the present invention.

Claims (2)

1. The wide-view-angle integrated imaging 3D display device is characterized by comprising a display screen and a gradual-change pitch micro-lens array; the display screen is used for displaying the micro-image array; the micro-lens array with the gradually changed pitch is placed in front of the display screen, and image elements in the micro-image array reconstruct a 3D scene through the lens elements in the micro-lens array with the gradually changed pitch; wherein,

in the micro lens array with the gradually changed pitches, the horizontal pitches of the lens elements positioned in the same column are the same; the lens elements in the same row have the same vertical pitch, and the horizontal pitch of the lens elements is gradually increased from the center of the row to the edge of the row;

the image elements in the micro-image array correspond to the lens elements in the gradient-pitch micro-lens array one by one, and the horizontal pitch and the vertical pitch of the image elements are respectively the same as the horizontal pitch and the vertical pitch of the corresponding lens elements.

2. The wide-viewing angle integrated imaging 3D display device according to claim 1, wherein the display screen is one of a liquid crystal display screen, a plasma display screen and an organic electroluminescent display screen.