CN110703457A - Optical path system for naked eye 3D imaging - Google Patents
Optical path system for naked eye 3D imaging Download PDFInfo
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- CN110703457A CN110703457A CN201910878303.6A CN201910878303A CN110703457A CN 110703457 A CN110703457 A CN 110703457A CN 201910878303 A CN201910878303 A CN 201910878303A CN 110703457 A CN110703457 A CN 110703457A
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Abstract
The invention discloses a naked eye 3D imaging light path system, which comprises a left display light path (11) and a right display light path (21), wherein a left lens (41) and a right lens (42), a left liquid crystal screen (51) and a right liquid crystal screen (52), a left plane mirror (61) and a right plane mirror (62) are sequentially arranged on the left display light path and the right display light path behind the left eye and the right eye, the distance between the main optical axes of the left lens and the right lens is equivalent to the distance between the left pupil and the right pupil of a human eye, the main optical axes of the left lens (41) and the right lens (42) pass through the middle points of the left plane mirror and the right plane mirror, and light rays reflected by the left plane mirror (61) and the right plane; virtual images of left and right liquid crystal screen lens virtual images (81) and (82) and left and right liquid crystal screen plane mirror virtual images (71) and (72) are converged to left and right eyes through left and right lens lenses (41) and (42), and a 3D effect is formed after the virtual images are amplified and overlapped. The invention has the advantages of good imaging effect, large visual angle, low manufacturing cost, high reliability and the like when the glasses are watched by naked eyes.
Description
Technical Field
The invention relates to the technical field of stereoscopic vision display light paths, in particular to a stereoscopic imaging method and a naked eye 3D display light path system for watching 3D pictures and videos.
Background
With the continuous development of science and technology, people have higher and higher requirements on stereoscopic vision experience, but go to a 3D cinema or buy a 3D television, need wear 3D glasses when watching, or adopt methods such as the 3D display device of wear-type, these limiting factors have brought certain inconvenience for people experience 3D, can't satisfy the requirement that people's bore hole normally watched 3D video. How to pay less burden on 3D glasses and some other auxiliary devices to view 3D video becomes the main goal of our work.
When the human visual system adopts single-eye perception, a two-dimensional world can be perceived, and when double-eye perception is adopted, a three-dimensional world can be perceived by using parallax. The stereo visual display method is to use the principle of human eye imaging to make parallax, because the distance between two eyes of human is about 65 mm, two images of the same object with different angles are seen, and the stereo visual sense is generated by human brain synthesis. Two micro cameras with the distance from the human eyes are arranged side by side to simulate the human eyes, and the human eyes can watch different effects after images or videos are shot simultaneously, so that stereoscopic vision can be generated. On the basis of this, many 3D display technologies can be developed. For watching 3D video by naked eyes, the viewer can obtain stereoscopic impression without adjusting the sight line by feeling, so the method is also suitable for users of low age. Compared with a head-mounted 3D display device, the head burden can be reduced when the user watches the display device by naked eyes, and the distance between the exit pupils is large, so that the user can feel easier.
The Chinese patent with the application number of CN108181707A and the name of 3D imaging method, visual light path system and head-mounted display equipment comprises a first screen and a second screen, wherein the first screen is arranged on the first screen; 2. a second screen; 3. a left shutter-type lens; 4. a right shutter-type lens; 5. an optical lens; 6. the transflective lens is characterized in that the first screen 1 and the second screen 2 are controlled to alternately display images, so that the switching frequency between the left shutter type lens and the right shutter type lens is consistent with the alternating frequency of the images displayed on the first screen and the second screen.
It has the following disadvantages: the control system is complicated, and the definition of the image cannot be guaranteed, and the weight bearing of the head of the human body is increased, and fatigue or dizziness may occur for long-time viewing.
Disclosure of Invention
The invention aims to provide an optical path system for naked eye 3D imaging, which realizes a naked eye 3D system by realizing a lens, a plane reflector and a liquid crystal display on optical paths of a left eye and a right eye.
The invention relates to an optical path system for naked eye 3D imaging, which comprises a left display optical path 11 and a right display optical path 21, wherein a left lens 41 and a right lens 42, a left liquid crystal screen 51 and a right liquid crystal screen 52, a left plane mirror 61 and a right plane mirror 62 are sequentially arranged on the left display optical path and the right display optical path behind a left eye position 31 and a right eye position 32, the distance between the main optical axes of the left lens and the right lens is equivalent to the distance between the left pupil and the right pupil of a human eye, the main optical axes of the left lens 41 and the right lens 42 pass through the middle points of the left plane mirror 61 and the right plane mirror 62, and light rays reflected by the left plane mirror 61 and the right plane mirror 62 are respectively vertical to the left; wherein:
the light passing through the left and right lenses 41, 42 displays left and right liquid crystal screen lens virtual images 81, 82 on the left and right liquid crystal screen 51, 52;
the light passing through the left and right plane mirrors 61, 62 displays virtual images of the left and right liquid crystal panel plane mirror virtual images 71, 72 on the left and right liquid crystal panels 51, 52,
virtual images of the left and right liquid crystal screen lens virtual images 81 and 82 and the left and right liquid crystal screen plane mirror virtual images 71 and 72 are converged to the left and right eyes through the left and right lens lenses 41 and 42, and a 3D effect is formed in the human brain after the virtual images are enlarged and overlapped.
Incident surface field angle theta of lens1Is 16 degrees to 24 degrees, and the field angle theta of the light-emitting surface of the lens245-53 degrees, the exit pupil distance D of the lens is 55-65 mm, the focal length f of the lens is 110-140 mm,
the distance L from the lens to the intersection point of the optical axes of the plane mirrors1Distance L from intersection point of optical axes of plane mirrors to middle point of display screen2The following relation is satisfied: 0.5<L1/L2<1。
The distance between the lens and the display screen is expressed as follows:
wherein L is4Is the length of the display screen, L3Is the length of the lens.
The invention has the advantages that:
the naked eye 3D imaging optical path system has the advantages that the head can move up and down and left and right for watching when watching, and the naked eye 3D imaging optical path system has good imaging effect, large visual angle, more applicable people, low manufacturing cost, high reliability and the like when watching.
Drawings
FIG. 1 is a schematic optical path diagram of an optical path system for naked eye 3D imaging according to the present invention;
fig. 2 is a diagram of an embodiment of an optical path system for naked eye 3D imaging according to the present invention.
Reference numerals:
11. 21, left display optical path, right display optical path, 21, 22, left and right focuses, 31, 32, left and right eye positions, 41, 42, left and right lenses, 51, 52, left and right liquid crystal screens, 61, 62, left and right plane mirrors, 71, 72, left and right liquid crystal screen plane virtual images, and 81, 82, left and right liquid crystal screen lens virtual images.
Detailed Description
The technical solution of the present invention is described in detail below with reference to the accompanying drawings and examples.
The optical path system for naked eye 3D imaging shown in fig. 1 includes left and right display optical paths 11 and 21, and left and right lenses 41 and 42, left and right liquid crystal screens 51 and 52, and left and right plane mirrors 61 and 62 are sequentially disposed on the left and right display optical paths. Wherein, the parameters of the left lens, the right lens, the plane mirror and the display screen are the same. Incident surface field angle θ of the left and right lenses 41 and 421Is 16 degrees to 24 degrees, and the field angle theta of the light-emitting surface245-53 degrees, an exit pupil distance D of 55-65 mm, a focal length f of 110-140 mm, and a lens length L3Width of the lens is W3Length of display screen is L4Width of display screen is W4And the distance between the lens and the display screen from the lens to the intersection point of the optical axes of the plane reflectors is L1The distance from the intersection point of the optical axes of the plane reflectors to the midpoint of the display screen is L2And satisfies the following relationships: 0.5<L1/L2<1, left and right display light path center distance L560 mm to 70 mm, preferably 65 mm, and a lens length L3Not more than the center distance L of the left and right systems5Lens length L3Preferably 65 mm, and the width of the lens is W3The first choice is 40 millimeters, and the exit pupil distance D of lens is 65 millimeters for the first choice, and the first choice is 130 millimeters for the focal length f of lens, and lens and display screen vertical setting, plane mirror are set to isosceles trapezoid, show that the plane mirror is set to isosceles trapezoid, show thatThe display is a 5 inch LCD display.
For better results, the length L of the lens3Most preferably 65 mm, the width W of the lens3The first choice is 40 mm, and the center distance L of the left and right display light paths5Preferably 65 mm, the exit pupil distance d of the lens preferably 65 mm and the focal length f preferably 130 mm. The plane reflector is in an isosceles trapezoid shape, and the thickness of the plane reflector is 3 mm. The display screen is a 5-inch 1080 × 1920 LCD liquid crystal display screen.
The user can watch the 3D picture or video played by the display screen through the lens, and the limitation of the optical path to the user is small, so that the size requirement is met as much as possible for better imaging effect, but the optical path can be modified according to the limitation condition.
In summary, according to the technical scheme provided by the invention, the head of the human body can be watched by naked eyes without wearing or contacting 3D glasses, and the head can be watched from up, down, left and right without affecting the appearance.
As can be seen from the above description of the present invention, in the adopted technical scheme, the left and right display optical paths are sequentially provided with the lens, the plane mirror and the display screen, the display optical paths are two independent and parallel optical paths, and can be viewed by naked eyes after being packaged into an independent internal structure; virtual images displayed by the left liquid crystal display screen and the right liquid crystal display screen are converged to left and right eyes through the left and right plane mirrors, and a 3D effect can be formed in the human brain after the virtual images are amplified and overlapped; the incident surface field angle theta of the lens1Is 16-24 degrees, and the field angle theta of the light-emitting surface of the lens2The angle is 45-53 degrees, so that the viewing field angle is large, the positions of human eyes do not need to be fixed, and the film can be viewed comfortably; the exit pupil distance D of the lens is 55-65 mm, and the focal length f of the lens is 110-140 mm; the length of the lens is L3The width of the lens is W3The length of the display screen is L4The width of the display screen is W4Distance between said lens and said display screen
The distance from the lens to the intersection point of the optical axes of the plane mirrors isL1The distance from the intersection point of the optical axes of the plane mirrors to the middle point of the display screen is L2And satisfies the following relationships: 0.5<L1/L2<1, in the range, the head can shift left and right when viewed by a user, the aberration of the shift range is within the tolerance of human eyes, and the distance of the exit pupil is long, so that the head can move up, down, left and right when viewed.
The above embodiments are only for illustrating the invention and are not to be construed as limiting the invention, and those skilled in the art can make various changes and modifications without departing from the spirit and scope of the invention, therefore, all equivalent technical solutions also belong to the scope of the invention, and the scope of the invention is defined by the claims.
Claims (4)
1. A light path system for naked eye 3D imaging is characterized by comprising a left display light path (11) and a right display light path (21), wherein a left lens (41) and a right lens (42), a left liquid crystal screen (51) and a right liquid crystal screen (52), a left plane mirror (61) and a right plane mirror (62) are sequentially arranged on the left display light path and the right display light path behind a left eye position (31) and a right eye position (32), the distance between the main optical axes of the left lens and the right lens is equivalent to the distance between the left pupil and the right pupil of a human eye, the main optical axes of the left lens (41) and the right lens (42) pass through the middle points of the left plane mirror (61) and the right plane mirror (62), and light rays reflected by the left plane mirror (61) and the right plane mirror; wherein:
the light passing through the left and right lenses (41) and (42) displays left and right liquid crystal screen lens virtual images (81) and (82) on the left and right liquid crystal screen (51) and (52);
the light passing through the left and right plane mirrors (61) and (62) displays virtual images of the left and right liquid crystal panel plane mirror virtual images (71) and (72) on the left and right liquid crystal display panels (51) and (52),
virtual images of left and right liquid crystal screen lens virtual images (81) and (82) and left and right liquid crystal screen plane mirror virtual images (71) and (72) are converged to left and right eyes through left and right lens lenses (41) and (42), and a 3D effect is formed in the human brain after the virtual images are amplified and overlapped.
2. The optical path system for naked eye 3D imaging according to claim 1, wherein the optical path system is characterized in thatAngle of view theta of incident surface of lens1Is 16 degrees to 24 degrees, and the field angle theta of the light-emitting surface of the lens2The angle is 45-53 degrees, the exit pupil distance D of the lens is 55-65 mm, and the focal length f of the lens is 110-140 mm.
3. The optical path system for naked eye 3D imaging according to claim 1, wherein a distance L from the lens to the intersection point of the optical axes of the plane mirrors1Distance L from intersection point of optical axes of plane mirrors to middle point of display screen2The following relation is satisfied:
0.5<L1/L2<1。
4. the optical path system for naked eye 3D imaging according to claim 1, wherein the distance between the lens and the liquid crystal display screen is expressed as follows:
wherein L is4Is the length of the display screen, L3Is the length of the lens.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201910878303.6A CN110703457A (en) | 2019-09-17 | 2019-09-17 | Optical path system for naked eye 3D imaging |
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| Application Number | Priority Date | Filing Date | Title |
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| CN201910878303.6A CN110703457A (en) | 2019-09-17 | 2019-09-17 | Optical path system for naked eye 3D imaging |
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Citations (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105487241A (en) * | 2015-12-29 | 2016-04-13 | 杭州立体世界科技有限公司 | Display device of high-definition naked eye 3D stereoscopic private theater |
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Patent Citations (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105487241A (en) * | 2015-12-29 | 2016-04-13 | 杭州立体世界科技有限公司 | Display device of high-definition naked eye 3D stereoscopic private theater |
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Application publication date: 20200117 |