CN110412770B - Uniform resolution integrated imaging 3D display device without crosstalk - Google Patents
Uniform resolution integrated imaging 3D display device without crosstalk Download PDFInfo
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- CN110412770B CN110412770B CN201910685928.0A CN201910685928A CN110412770B CN 110412770 B CN110412770 B CN 110412770B CN 201910685928 A CN201910685928 A CN 201910685928A CN 110412770 B CN110412770 B CN 110412770B
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- 238000003384 imaging method Methods 0.000 title claims abstract description 19
- 239000011295 pitch Substances 0.000 claims abstract description 59
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- G—PHYSICS
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- G02B—OPTICAL ELEMENTS, SYSTEMS OR APPARATUS
- G02B27/00—Optical systems or apparatus not provided for by any of the groups G02B1/00 - G02B26/00, G02B30/00
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Abstract
The invention discloses a crosstalk-free uniform resolution integrated imaging 3D display device, which comprises a backlight source, a rectangular pinhole array and a display screen; the horizontal width of the display screen is equal to the horizontal width of the rectangular pinhole array; the vertical width of the display screen is equal to the vertical width of the rectangular pinhole array; in the rectangular pinhole array, the horizontal pitches of all the rectangular pinholes are the same, the vertical pitches of all the rectangular pinholes are the same, and the horizontal pitches of the rectangular pinholes are not equal to the vertical pitches of the rectangular pinholes; the ratio of the horizontal aperture width to the vertical aperture width of the rectangular pinholes is equal to the ratio of the horizontal pitch to the vertical pitch of the rectangular pinholes; the light passing through the rectangular pinholes illuminates the rectangular picture elements corresponding thereto and the other rectangular picture elements cannot be illuminated, thereby eliminating crosstalk.
Description
Technical Field
The present invention relates to integrated imaging 3D displays, and more particularly to a cross-talk free uniform resolution integrated imaging 3D display device.
Background
The integrated imaging 3D display has the characteristic of naked eye viewing, the shooting and displaying process is relatively simple, and the integrated imaging 3D display can display 3D images with full parallax and full true colors, and is one of the main modes of the current 3D display. However, in conventional integrated imaging 3D displays, the picture elements in the microimage array are square, i.e. the horizontal pitch of the picture elements is equal to the vertical pitch. In conventional integrated imaging 3D displays, the microlenses are circular and the pinholes are square, with the horizontal pitch of the microlenses and pinholes being equal to the vertical pitch.
For televisions and displays, the ratio of horizontal width to vertical width of the television and display is 16:9, 16:10 or 4:3. That is, the ratio of the number of image elements in the horizontal direction to the number of image elements in the vertical direction is 16:9, 16:10 or 4:3. The defects are that:
(1) The horizontal viewing angle is much smaller than the vertical viewing angle.
(2) The ratio of 3D pixels in the horizontal direction to 3D pixels in the vertical direction is 16:9, 16:10 or 4:3. Since the total amount of 3D pixels of the 3D image is not high, the 3D pixels in the vertical direction are too few, thereby affecting the viewing effect.
For a mobile phone, the ratio of the horizontal width to the vertical width of the mobile phone is 9:16, 10:16 or 3:4. That is, the ratio of the number of image elements in the horizontal direction to the number of image elements in the vertical direction is 9:16, 10:16 or 3:4. The defects are that:
(1) The ratio of 3D pixels in the horizontal direction to 3D pixels in the vertical direction is 9:16, 10:16 or 3:4. Since the total amount of 3D pixels of the 3D image is not high, the 3D pixels in the horizontal direction are too few, thereby affecting the viewing effect.
In addition, crosstalk also limits the wide range of applications for integrated imaging.
Disclosure of Invention
The invention provides a crosstalk-free uniform resolution integrated imaging 3D display device, which is shown in figures 1 and 2 and is characterized by comprising a backlight source, a rectangular pinhole array and a display screen; the rectangular pinhole array is positioned between the backlight source and the display screen and is tightly attached to the backlight source; the display screen is arranged in front of the rectangular pinhole array in parallel and is used for displaying the rectangular microimage array; the horizontal central axis and the vertical central axis of the display screen are respectively aligned with the horizontal central axis and the vertical central axis of the rectangular pinhole array; the horizontal width of the display screen is equal to the horizontal width of the rectangular pinhole array; the vertical width of the display screen is equal to the vertical width of the rectangular pinhole array; as shown in fig. 3 and 4, in the rectangular pinhole array, the horizontal pitches of all the rectangular pinholes are the same, the vertical pitches of all the rectangular pinholes are the same, and the horizontal pitches of the rectangular pinholes are not equal to the vertical pitches of the rectangular pinholes; the rectangular micro-image array consists of a series of rectangular image elements with the same size which are closely arrangedThe horizontal pitch of the elements is the same as the horizontal pitch of the corresponding rectangular pinholes, and the vertical pitch of the rectangular image elements is the same as the vertical pitch of the corresponding rectangular pinholes; thickness of rectangular pinhole arraytThe method comprises the following steps:
（1）
wherein,pis the horizontal pitch of the rectangular pinholes,wis the horizontal aperture width of the rectangular pinhole,gis the distance between the display screen and the rectangular pinhole array; the light passing through the rectangular pinholes illuminates the rectangular picture elements corresponding thereto and the other rectangular picture elements cannot be illuminated, thereby eliminating crosstalk.
Preferably, the ratio of the horizontal pitch to the vertical pitch of the rectangular pinholes is equal to the ratio of the horizontal width to the vertical width of the rectangular pinhole array.
Preferably, the ratio of the horizontal aperture width to the vertical aperture width of the rectangular pinholes is equal to the ratio of the horizontal pitch to the vertical pitch of the rectangular pinholes.
Preferably, the integrated imaging 3D display has a horizontal viewing perspectiveθ 1 Viewing angle at verticalθ 2 Horizontal resolutionR 1 Vertical resolutionR 2 Horizontal optical efficiencyφ 1 And vertical optical efficiencyφ 2 The method comprises the following steps of:
（2）
（3）
（4）
（5）
wherein,pis the horizontal pitch of the rectangular pinholes,wis the horizontal aperture width of the rectangular pinhole,mis the number of rectangular pinholes in the horizontal direction in the rectangular pinhole array,lis the viewing distance of the object to be viewed,gis the spacing between the display screen and the rectangular pinhole array,tis the thickness of the rectangular array of pinholes,ais the ratio of the vertical width to the horizontal width of the rectangular pinhole array.
Preferably, the ratio of the horizontal aperture width of the rectangular pinholes to the horizontal pitch of the rectangular pinholes is most suitable between 10% and 20%, and the ratio of the vertical aperture width of the rectangular pinholes to the vertical pitch of the rectangular pinholes is most suitable between 10% and 20%.
Drawings
FIG. 1 is a schematic view of the horizontal direction parameters of the present invention
FIG. 2 is a schematic view of the vertical direction parameters of the present invention
FIG. 3 is a schematic diagram of a rectangular pinhole array according to the present invention
FIG. 4 is a schematic diagram of a rectangular microimage array in accordance with the present invention
The graphic reference numerals in the above figures are:
1. the backlight source, the rectangular pinhole array, the display screen and the rectangular microimage array.
It should be understood that the above-described figures are merely schematic and are not drawn to scale.
Detailed Description
The present invention will be described in further detail with reference to the following detailed description of an exemplary embodiment of the invention. It is noted that the following examples are given for the purpose of illustration only and are not to be construed as limiting the scope of the invention, since numerous insubstantial modifications and adaptations of the invention will be within the scope of the invention as viewed by one skilled in the art from the foregoing disclosure.
The invention provides a cross-talk-free uniform resolution integrated imaging 3D display device, as shown in figures 1 and 2, which is characterized in thatThe display comprises a backlight source, a rectangular pinhole array and a display screen; the rectangular pinhole array is positioned between the backlight source and the display screen and is tightly attached to the backlight source; the display screen is arranged in front of the rectangular pinhole array in parallel and is used for displaying the rectangular microimage array; the horizontal central axis and the vertical central axis of the display screen are respectively aligned with the horizontal central axis and the vertical central axis of the rectangular pinhole array; the horizontal width of the display screen is equal to the horizontal width of the rectangular pinhole array; the vertical width of the display screen is equal to the vertical width of the rectangular pinhole array; as shown in fig. 3 and 4, in the rectangular pinhole array, the horizontal pitches of all the rectangular pinholes are the same, the vertical pitches of all the rectangular pinholes are the same, and the horizontal pitches of the rectangular pinholes are not equal to the vertical pitches of the rectangular pinholes; the rectangular micro-image array is formed by closely arranging a series of rectangular image elements with the same size, the horizontal pitch of the rectangular image elements is the same as the horizontal pitch of corresponding rectangular pinholes, and the vertical pitch of the rectangular image elements is the same as the vertical pitch of the corresponding rectangular pinholes; thickness of rectangular pinhole arraytThe method comprises the following steps:
（1）
wherein,pis the horizontal pitch of the rectangular pinholes,wis the horizontal aperture width of the rectangular pinhole,gis the distance between the display screen and the rectangular pinhole array; the light passing through the rectangular pinholes illuminates the rectangular picture elements corresponding thereto and the other rectangular picture elements cannot be illuminated, thereby eliminating crosstalk.
Preferably, the ratio of the horizontal pitch to the vertical pitch of the rectangular pinholes is equal to the ratio of the horizontal width to the vertical width of the rectangular pinhole array.
Preferably, the ratio of the horizontal aperture width to the vertical aperture width of the rectangular pinholes is equal to the ratio of the horizontal pitch to the vertical pitch of the rectangular pinholes.
Preferably, the integrated imaging 3D display has a horizontal viewing perspectiveθ 1 Viewing angle at verticalθ 2 Horizontal resolutionR 1 Vertical resolutionR 2 Horizontal optical efficiencyφ 1 And vertical optical efficiencyφ 2 The method comprises the following steps of:
（2）
（3）
（4）
（5）
wherein,pis the horizontal pitch of the rectangular pinholes,wis the horizontal aperture width of the rectangular pinhole,mis the number of rectangular pinholes in the horizontal direction in the rectangular pinhole array,lis the viewing distance of the object to be viewed,gis the spacing between the display screen and the rectangular pinhole array,tis the thickness of the rectangular array of pinholes,ais the ratio of the vertical width to the horizontal width of the rectangular pinhole array.
Preferably, the ratio of the horizontal aperture width of the rectangular pinholes to the horizontal pitch of the rectangular pinholes is most suitable between 10% and 20%, and the ratio of the vertical aperture width of the rectangular pinholes to the vertical pitch of the rectangular pinholes is most suitable between 10% and 20%.
The ratio of the vertical width to the horizontal width of the rectangular pinhole array isa=0.5, the horizontal pitch of rectangular pinholes ispHorizontal aperture width of rectangular pinhole of 10mmw=2mm, viewing distance oflThe distance between the display screen and the rectangular pinhole array is 1000mmgThe number of rectangular pinholes in the horizontal direction in the rectangular pinhole array was =4mmm=50. The rectangular pinhole array having a thickness of 2mm is obtained according to the formula (1), and obtained according to the formulas (2), (3), (4) and (5), the present inventionThe horizontal viewing angle, vertical viewing angle, horizontal resolution, vertical resolution, horizontal optical efficiency, and vertical optical efficiency of the integrated imaging 3D display are 74 °, 28 °, 50%, 10%, and 10%, respectively.
Claims (3)
1. The crosstalk-free uniform resolution integrated imaging 3D display device is characterized by comprising a backlight source, a rectangular pinhole array and a display screen; the rectangular pinhole array is positioned between the backlight source and the display screen and is tightly attached to the backlight source; the display screen is arranged in front of the rectangular pinhole array in parallel and is used for displaying the rectangular microimage array; the horizontal central axis and the vertical central axis of the display screen are respectively aligned with the horizontal central axis and the vertical central axis of the rectangular pinhole array; the horizontal width of the display screen is equal to the horizontal width of the rectangular pinhole array; the vertical width of the display screen is equal to the vertical width of the rectangular pinhole array; in the rectangular pinhole array, the horizontal pitches of all the rectangular pinholes are the same, the vertical pitches of all the rectangular pinholes are the same, and the horizontal pitches of the rectangular pinholes are not equal to the vertical pitches of the rectangular pinholes; the ratio of the horizontal pitch to the vertical pitch of the rectangular pinholes is equal to the ratio of the horizontal width to the vertical width of the rectangular pinhole array; the ratio of the horizontal aperture width to the vertical aperture width of the rectangular pinholes is equal to the ratio of the horizontal pitch to the vertical pitch of the rectangular pinholes; the rectangular micro-image array is formed by closely arranging a series of rectangular image elements with the same size, the horizontal pitch of the rectangular image elements is the same as the horizontal pitch of corresponding rectangular pinholes, and the vertical pitch of the rectangular image elements is the same as the vertical pitch of the corresponding rectangular pinholes; the thickness t of the rectangular pinhole array is:
wherein p is the horizontal pitch of the rectangular pinholes, w is the horizontal aperture width of the rectangular pinholes, and g is the distance between the display screen and the rectangular pinhole array; the light passing through the rectangular pinholes illuminates the rectangular picture elements corresponding thereto and the other rectangular picture elements cannot be illuminated, thereby eliminating crosstalk.
2. The cross-talk free uniform resolution integrated imaging 3D display device of claim 1 wherein the integrated imaging 3D display has a horizontal viewing angle θ 1 Vertical viewing angle θ 2 Horizontal resolution R 1 Vertical resolution R 2 Horizontal optical efficiencyAnd vertical optical efficiency->The method comprises the following steps of:
R 1 ＝R 2 ＝m
wherein p is the horizontal pitch of the rectangular pinholes, t is the thickness of the rectangular pinholes, w is the horizontal aperture width of the rectangular pinholes, m is the number of rectangular pinholes in the horizontal direction of the rectangular pinhole array, l is the viewing distance, g is the spacing between the display screen and the rectangular pinhole array, and a is the ratio of the vertical width to the horizontal width of the rectangular pinhole array.
3. The cross-talk free uniform resolution integrated imaging 3D display device of claim 1, wherein the ratio of the horizontal aperture width of the rectangular pinholes to the horizontal pitch of the rectangular pinholes is most suitable between 10% and 20%, and the ratio of the vertical aperture width of the rectangular pinholes to the vertical pitch of the rectangular pinholes is most suitable between 10% and 20%.
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