Full color high definition (5k~8k) high brightness dual vertical screen stereoscopic image device

Abstract

The present invention relates to a full-color, high-definition (5k-8k), high-brightness dual-vertical screen stereoscopic image viewing device, comprising two anti-symmetric eccentric lenses, a light shielding plate with holes in front of the lenses, and a spiral. The stereoscopic glasses frame is hung on a glasses frame with a rectangular frame and double temples to become "mobile phone stereoscopic glasses". The stereoscopic glasses frame and two vertically arranged mobile phones can also be packaged in a box, and the stereoscopic glasses frame is installed at the front upper end of the box, and the viewing object is also the left and right eye images on the two vertically arranged mobile phone screens. The mobile phone is inserted into the rear end of the box, the center distance between the two eccentric lenses is adjusted, and a spiral is installed at the lower end to adjust the distance between the two eccentric lenses and the mobile phone screen, which becomes a "dual vertical screen stereoscopic image viewing device". The present invention is used to view vertically shot stereoscopic image pairs. For example, personal stereoscopic photo, wedding photography, medical treatment, cultural and sports performance, stereoscopic self-media performance and viewing, digital preservation and exhibition of precious cultural relics, full-color, ultra-high-definition, high-brightness stereoscopic images can be seen.

Description

Technical Field

[0001] The present invention relates to a stereoscopic image viewing device, in particular to a full-color, high-definition (5k-8k), high-brightness dual-vertical-screen stereoscopic image viewing device designed under the guidance of the newly established "non-paraxial optics" theory. Background Art

[0002] Since the author first proposed the concept of eccentric lens in 2009, it has been found in practice that eccentric lens can make the left and right eye images shift horizontally, thus satisfying one of the important conditions required to obtain stereoscopic images, that is, the left and right eye images must be completely overlapped at the position where they form virtual images after being magnified in order to see a good stereoscopic image. Therefore, stereo glasses are designed for laptops, iPads, desktop computers, TV screens, etc., and an invention patent CN200910070421.0 is obtained, named "full-color high-definition glasses-type stereoscopic viewer device", which is mainly designed for the case where the area of ​​the original left and right eye images is relatively large. Therefore, the focal length of the main lens is relatively long, so that people can see the image clearly at a distance. At the same time, the magnification should not be too large, otherwise mosaics will appear, but the eccentricity must be large, otherwise the left and right eye images will not overlap at the position where the virtual image forms a positive image, and the stereoscopic image cannot be seen.

[0003] After that, a kind of stereo glasses became popular in the market. It is made of two prisms. By choosing the right vertex angle, the left and right eye images on the computer or TV screen can be overlapped to obtain a stereo image. However, this method will destroy the clarity of the image and produce chromatic aberration (because the prism itself is a color separation mirror). The larger the vertex angle, the more serious it is. This has been described in our original invention patent mentioned above. It only plays an auxiliary role. That is, when watching a larger screen with an eccentric lens, sometimes the left and right eye images are just a little bit away from being completely overlapped. When a pair of small vertex angle prism lenses are inserted in front of the left and right lenses of the stereo glasses, they can be completely overlapped and a stereo image can be seen. Because the vertex angle is small, the destruction of the image can be ignored.

[0004] Since 2013, with the development of mobile phone touch screens, the area of ​​mobile phone display screens has become larger and larger, and the clarity of the screen has become higher and higher. In order to obtain the highest definition 3D display system, Chinese patent CN201410554496.7 has been reported, and the invention name is: Stereoscopic viewer and personal stereoscopic theater device with 4G communication system. It is decided to use two mobile phones of the same model on both sides of the V-shaped plane mirror, one mobile phone display screen displays a standard 16:9 left eye image, located on the left side of the V-shaped plane mirror, and the other mobile phone display screen displays a standard 16:9 right eye image, located on the right side of the V-shaped plane mirror, so that the left and right eye virtual images formed by the V-shaped mirror are located at the front end of the V-shaped mirror and partially overlap, and then the eccentric lenses of the left and right eyes are used to make them further completely overlap, so that the human eye can see three-dimensional. Since the overlap is very good, it does not look dizzy. Also, since the lens is made of K9 glass with a transmittance of 100%, and the V-shaped reflector is a silver-coated film with a reflectivity of nearly 100%, it does not produce aberrations except for horizontal inversion of the image (i.e., mirror image). Of course, aberrations of eccentric lenses are inevitable. However, since a large original imaging surface is used, the required magnification is small, so it looks like the aberration is not significant. When the requirements are high, a composite lens can be used to eliminate some particularly significant aberrations. There are already fixed programs to do this. Here, a single-screen machine (often called VR) made of a mobile phone can be used for comparison.

[0005] A single-screen machine refers to two standard 16:9 left and right eye images placed side by side on a 16:9 display screen, so there will be a space at the top and bottom of the mobile phone screen. It is not difficult to calculate that the area of ​​the original image is only 1 / 4 of that of the double-sided screen (it has filled the entire screen), that is, the size in the x-direction and y-direction is only 1 / 2 of that. Therefore, in order for a single-screen machine to achieve a stereoscopic image of the same size as a double-sided screen machine, the magnification of the single-screen machine must be twice that of the double-screen machine. According to some basic knowledge of lens aberration theory, the greater the magnification, the more aberrations will increase sharply. Different types of aberrations have different increase multiples. Assuming the magnification is m, distortion is proportional to the cube of m, coma is proportional to the square of m, and field curvature and astigmatism are proportional to the first power of m (that is, directly proportional to the magnification). Therefore, the aberration of the stereo imager of the double-side screen is much smaller than that of the single-screen stereo imager (usually directly called VR). According to the above aberration theory, its distortion is only 1 / 8 of that of the single screen, the coma is only 1 / 4, and the astigmatism and field curvature are only 1 / 2. It is naturally much smaller than the original image of less than 1 inch using LCOS. This is why in the design of the double-side screen, we only use a pair of single-piece eccentric lenses, and the magnified image can basically not see any aberration. If a higher magnification is required, a composite eccentric lens can also be used. Therefore, there is a greater potential for forming a higher quality stereo image. From this, we can see that using two mobile phones to obtain a high-quality stereo image has considerable advantages.

[0006] As early as the end of the last century and the beginning of this century, people began to consider how to form an ideal stereoscopic image, and gradually established that the following five conditions must be met to obtain an ideal stereoscopic image:

[0007] 1) There should be perfect left and right eye plane images (this is the premise).

[0008] 2) The left eye image and the right eye image must arrive at a suitable imaging position in front of the eye at the same time and completely overlap, otherwise a three-dimensional image cannot be formed.

[0009] 3) It must be ensured that the left eye can only see the left eye image, and the right eye can only see the right eye image, otherwise crosstalk will occur.

[0010] 4) There must be no loss in the process of synthesizing the left-eye image and the right-eye image into a stereoscopic image (including clarity, brightness, color, grayscale, etc.), and the image must be stable and free of flicker.

[0011] 5) When the original image is magnified, the aberration produced must be kept within a range that is imperceptible to the human eye.

[0012] The first one can be said to be a prerequisite. After hundreds of years of flat photography and the development of 3D movies in the past 10 to 20 years, these professional 3D producers can be said to have done a pretty good job. Even amateur photographers can do a good job with a good mobile phone. The flat left-eye image and the flat right-eye image taken can be put together side by side (side by side), or stacked up and down (up & down) to make a videotape or play it in real time. Their production task is completed, and the next question is how to play it. 3D movies, 3D TV, or so-called naked-eye 3D each have different methods to meet the above requirements, but they all have their own shortcomings. For example, a movie theater uses two polarized lights with perpendicular polarization directions to project the left-eye image and the right-eye image respectively, projecting them on the same screen, which meets condition 2). Then, when wearing polarized glasses to watch, the left lens can only see the polarized light image of the left eye image, and the right lens can only see the polarized light image of the right eye image, which meets condition 3). But it is not absolute. The left eye polarizer can also see a little bit of the right eye image, and the right eye polarizer can also see a little bit of the left eye image, which causes crosstalk.

[0013] Another example is 3D TV, which uses LCD shutter 3D glasses for viewing. It uses the time division method, that is, when the previous frame is a left eye image, the left eye's LCD shutter is open, while the right eye's LCD shutter is closed. When the next frame is displayed as a right eye image, the right eye's LCD shutter is open, while the left eye's LCD shutter is closed, which satisfies condition 3). At the same time, they are all displayed on the same TV screen, so condition 2 is satisfied. As the frame rate changes, it switches back and forth, which makes people feel flickering and looks uncomfortable. Later, the frame rate was increased from 50 / 60 Hz to 120 or even 240 Hz, and the situation improved. Whether it is a polarizer or an LCD shutter, their light transmittance is only about 50%, and they are slightly gray, which also affects the color saturation. Therefore, it is difficult for these two methods to meet condition 4).

[0014] As for naked-eye 3D made of cylindrical micro-mirrors, it has a long history. It is indeed attractive to be able to watch stereoscopic images with naked eyes, but its fatal weakness is that the clarity is reduced by half, and the stereoscopic images can only be seen when standing in certain appropriate positions. This is because the left and right eye images are first divided into a grid shape and embedded with each other, that is, a thin strip of left eye image, next to a thin strip of right eye image, are spread all over the same display screen, which satisfies condition 2). Then, at their junction, a cylindrical micro-mirror is placed so that the left eye can only see the left eye image, and the right eye can only see the right eye image, which satisfies condition 3). Therefore, half of the clarity is sacrificed to obtain stereoscopic images, which is determined by the imaging itself, and it is impossible to increase the clarity through improvement. And it is difficult to show a larger depth of field. There is also the so-called holographic imaging method, which is of course the most ideal imaging method. It can be seen everywhere with naked eyes, but it has been under research. Although there has been progress, it will take some time to enter reality. It is difficult to meet the above-mentioned second necessary condition using traditional imaging methods.

[0015] The so-called traditional optics refers to the optics we have learned in middle school and college, namely paraxial optics (also called Gaussian optics). It is the science of studying the optical imaging law of a rotating axis-symmetrical lens near the axis of symmetry, so it is called "paraxial optics". It was studied most thoroughly by the German scientist Gauss 180 years ago, so it is also called "Gaussian optics". It has achieved very brilliant results. The inventions of microscopes, telescopes, electron microscopes and radio telescopes all depend on it. However, it can only enlarge or reduce the image along the direction of the axis of symmetry, move away or bring it closer, but cannot move the image horizontally, and it is assumed that the human eye always looks at the optical axis, so it is impossible to make the two parallel left and right eye images overlap after enlarging them, so it is difficult to meet the second necessary condition for forming a three-dimensional image.

[0016] Here we can only introduce the so-called eccentric lens optical shift method formed by the route guided by non-paraxial optics. It is the most ideal 3D imaging method that can be achieved at present, and it is the most realistic method at present, and it has been realized. Moreover, you can watch the stereoscopic scene with quasi-naked eyes without wearing special glasses, and you will feel like looking out the window. The closer you are to the window, the larger and farther the field of view you can see. Therefore, it is called "quasi-naked eyes".

[0017] Creation of non-paraxial optics (see Figure 4 )

[0018] After careful study of the rotational axisymmetric optical system, it is pointed out that the paraxial light emitted from a point can be focused to form an image, which gives rise to Gaussian optics. Further research shows that the non-paraxial light emitted from this point can also be focused to form an image. It's just that the positions of the two imaging planes are different. The non-paraxial light interferes with and destroys the paraxial imaging, which is the purpose of aberration research. Conversely, if the imaging subject is replaced with non-paraxial light, then these paraxial light rays become interferers and destroyers. Therefore, a complete set of non-paraxial optical imaging theory and corresponding aberration theory can also be formed. But there are two significant differences:

[0019] (A) Focus F of non-paraxial optics d and focal length f d The definition of focus F and focal length f is different from that of paraxial optics.

[0020] For a rotational axisymmetric system, the optical path on the meridian plane of the lens (the plane containing the axis of symmetry) can represent the actual situation of the lens. d It refers to the intersection of parallel light rays located in the meridian plane (the plane containing the rotational symmetry axis Z) at a distance d (called eccentricity) from the symmetry axis Z and the Z axis after being refracted by the lens. d It refers to the distance from the point to the center of the lens. Obviously, the focus and focal length are functions of the curvature radius of the upper and lower surfaces of the lens, the refractive index N, and the eccentricity d.

[0021] For the simple case of a plano-convex thin lens, the focal length can be found using the following simple formula:

[0022]

[0023] Where R is the radius of curvature of the convex surface, and the refractive index n is assumed to be 1.5. For a specific lens, as long as the radius of curvature and the refractive index N of the two surfaces are given and the position of the principal plane is determined using the common method in optics, the eccentric focal length f d It refers to the focus F d The distance from the main plane can be calculated exactly.

[0024] (B) Imaging formula for non-paraxial optics

[0025] Let a be the object distance, b be the image distance, and the magnification of the eccentric lens be M. d, The imaging formula of non-paraxial optics (also called non-Gaussian optics) is similar to that of Gaussian optics, but the focal length f d The focal length f is different from that of Gaussian optics, and the viewing position is also different.

[0026]

[0027] When the eccentricity d approaches zero, f d is the Gaussian focal length f, which is consistent with the Gaussian imaging formula. Therefore, non-paraxial optics is an extension of Gaussian paraxial optics. It is somewhat similar to the relationship between Euclidean geometry learned in middle school and non-Euclidean geometry developed later. To use the simplest example to illustrate, the geometry on the sphere is different from the geometry on the plane, so that the sum of the three internal angles of the triangle in the former is not equal to 180 degrees. But when the radius of the sphere tends to infinity, they are completely consistent. Riemannian geometry is also a non-Euclidean geometry, and Einstein used it to create the general theory of relativity.

[0028] (C) The human eye is located at the eccentric point, that is, it can see the lateral deviation of the image

[0029] When a human eye (for example, the left eye ( Figure 4 ) is not viewed along the axis of symmetry, but viewed from the eccentric point O' (or D) at a distance d (eccentricity) from the central axis of symmetry. A strange thing happens. When the incident light parallel to the Z axis enters the pupil of the human eye, the human eye feels that it is coming at an angle, and passes through the object focus and hits the eccentric point D (i.e. Figure 4 , we feel that the light from point O' is the light that comes vertically from the human eye. Therefore, we feel that the enlarged virtual image formed at the front has made an overall horizontal shift. Let its horizontal shift amount be T, or let the deflection angle caused by its horizontal shift be γ, and after mathematical calculation, we can get:

[0030]

[0031] From (4), we can see that the lateral displacement T of the image is proportional to the eccentricity d and is in the same direction as d. d After determination, it is only related to the object distance a. Therefore, if the object distance is certain, the position of the image is also uniquely determined, and the entire image is shifted horizontally by the same T, so an overall displacement is made without causing image distortion.

[0032] So far, non-paraxial optics has formed a relatively complete theory, with its own imaging formula and quantitative knowledge of the lateral displacement of the image produced. Please note that the human eye sees through the eccentric point D. This leads to the concept of "eccentric lens".

[0033] A lens cut out of a circle with the eccentric point D (i.e. O') as the center according to the size of the lens is called an eccentric lens. At this time, the human eye uses one eye to view the center of the eccentric lens (i.e. the original eccentric point D). If point D is located to the right of the center of the main lens, point O, the eccentric lens cut out at this time appears thicker on the left and thinner on the right, and the image seen at this time is horizontally offset to the right (positive X direction). If this eccentric lens is used as a lens in front of the left eye of a person, this will cause the magnified left eye image to shift to the right. Similarly, if point D is located to the left of point O, the eccentric lens cut out at this time appears thinner on the left and thicker on the right, and the image seen at this time is horizontally offset to the left (negative X direction). At this time, if this eccentric lens is used as a lens in front of the right eye of a person, this will cause the magnified right eye image to shift to the left. In this way, the left and right eye images are close to each other in the direction of the central axis. The size of the eccentricity d is adjusted so that the left and right eye images are completely superimposed. Doesn't this meet the second necessary condition for obtaining a complete stereoscopic image? This is exactly the most successful aspect of non-paraxial optics.

[0034] Since the left and right eye images are completely isolated, and the magnified images of the left and right eyes completely overlap with each other in the virtual image space, the third necessary condition is met and there is no crosstalk at all.

[0035] The lens is made of K9 optical glass. Later, silver-plated reflectors were used in the double-side screen stereo imager. Therefore, the transmittance and reflectivity are close to 100%, and the color and grayscale levels will not change. Therefore, the fourth necessary condition is met. As for the fifth necessary condition, it will inevitably occur in the lens magnification system. However, the original imaging surface we use is relatively large. That is, it covers the entire mobile phone screen of 6 to 7 inches. The required magnification is relatively small, so it is not significant. Even if a single eccentric lens is used as the lens in front of the left and right eyes, the result is satisfactory. Of course, the use of a composite lens will be very beneficial, especially in eliminating distortion. In this regard, there is already mature technology to achieve the desired height.

[0036] As for the first condition, 3D producers have done a great job in this regard. Even smartphones, such as Huawei's lower-end P20, have already achieved 4K resolution, and the P40 and Mate series will naturally be even better.

[0037] Therefore, this technical route opened up by non-paraxial optics can almost meet all the conditions for forming a perfect three-dimensional image. At present, it should be the most promising technology that is closely related to life and can be realized immediately. The double-side screen three-dimensional imager has been very popular at exhibitions at home and abroad, which also proves the reliability of the theory from another aspect. Summary of the invention

[0038] The purpose of the present invention is to provide a full-color, high-definition (5k~8k), high-brightness dual-vertical screen stereoscopic viewing device, to provide a pair of stereoscopic glasses with good performance for smart high-definition mobile phones, or to install the eyeglasses and two vertical mobile phones in a box, so as to achieve the observation of ultra-high-definition 5K~8K, full-color, high-brightness, and relatively perfect stereoscopic images with no aberrations detectable by the human eye.

[0039] The technical solution of the full-color high-definition (5k-8k) high-brightness dual-vertical screen stereoscopic image viewing device provided by the present invention is as follows:

[0040] A stereoscopic image viewing device mainly comprises an eccentric lens and a lens bracket. The eccentric lens has a light blocking plate with a light-transmitting hole and is connected to the lens bracket. The distance between the geometric centers of the left and right eccentric lens circles should be greater than the distance between the centers of two human eyeballs, and is between 56 and 76 mm and is adjustable.

[0041] The non-paraxial optical imaging formula of the eccentric lens is written as the following analytical formula (the plano-convex lens is approximated as a thin lens and its refractive index N is assumed to be 1.5):

[0042]

[0043] Among them, f d is the focal length of the eccentric lens, R is the radius of the main lens, a is the object distance, b is the image distance, M d is the magnification, d is the eccentricity, T is the lateral displacement of the magnified image, and γ is the size of the deflection angle.

[0044] A smaller circular lens cut out of the original main lens is called an eccentric lens. The focus of the eccentric lens is F d It refers to the intersection of the parallel light passing through the eccentric point and the central axis of the original main lens. The distance between this intersection and the center of the original lens is called the focal length f of the eccentric lens. d , object distance a, image distance b and magnification M d This is consistent with the definition of paraxial optics.

[0045] The absolute value of the eccentricity of the eccentric lens should be smaller than its radius. When the eccentricity approaches zero, the imaging formula of non-paraxial optics is exactly the same as that of Gaussian optics, and the lateral displacement and deflection angle also approach zero.

[0046] In the stereoscopic image viewing device, the eccentric lens is obtained by the main lens, and the main lens is composed of two coaxial spherical surfaces, the spherical surface with a smaller curvature radius is farther from the human eye, and the spherical surface with a larger curvature radius is closer to the eye; this curvature radius can be increased to infinity, and at this time it is a plane; the cross section of the main lens, that is, the cross section of the plane containing the rotational symmetry axis of the main lens and the lens should be half-moon-shaped, that is, one side is convex and the other side is slightly concave; the human eye views through this slightly concave surface; the diameter of the main lens is between 30mm and 60mm; its Gaussian focal length f=60~120mm; the eccentricity is 1~16mm, so the two corresponding eccentric points are Located in pairs from -1mm, +1mm to -16, +16 from the center of the lens; with the eccentric point as the center and a circle of 14 to 28mm as the radius, a circular lens piece is cut out from the main lens. This circular lens piece with a diameter of 28 to 56mm is the eccentric lens; if the eccentric point is located on the right side of the main lens, that is, in the direction of the positive X-axis, the cut eccentric lens is used as the left eye eccentric lens, and its left side is thicker and its right side is thinner; if the eccentric point is located on the left side of the main lens, that is, in the direction of the negative X-axis, the cut eccentric lens is used as the right eye eccentric lens, and its right side is thicker and its left side is thinner. The eccentric focal length f of this eccentric lens is d It varies with f and d, is smaller than the Gaussian focal length f, and the cross-section cut along the diameter is also crescent-shaped, with the flatter side facing the human eye.

[0047] In the stereoscopic image viewing device, the eccentric lens is obtained from the main lens. When the required eccentricity is much smaller than the radius of the main lens, that is, only a few millimeters, the main lens is directly used as the eccentric lens; when designing stereoscopic glasses, the eccentric point of the main lens used as the eccentric lens in the positive X direction should be directly aligned with the pupil of the left eye, and the eccentric point of the other main lens used as the eccentric lens in the negative X direction should be directly aligned with the pupil of the right eye. This is particularly important in the design of a device without adjusting the distance between the left and right eye lenses. The distance between the two centers must be greater than the distance between the pupils of the two eyes of the viewer. This has almost become a golden rule and must not be violated. The specific size of the distance is determined by the size of the eccentricity required to make the left eye image and the right eye image completely overlap.

[0048] In the device with the function of adjusting the distance between the two centers of the circles, the starting positions of the two lenses are placed in the above manner, so that when the circular lens is used as an eccentric lens, the adjustment range of its eccentric distance can be widened. The stereoscopic image viewing device has a light shielding plate with a hole in front of the eccentric lens. The shape of the hole will be different according to different applications, so that the left eye and the right eye can see the entire stereoscopic image, while isolating the surrounding parts that do not need to be seen. The shape of the hole is symmetrical up and down, and the light shielding plates in front of the left and right eccentric lenses are left-right anti-symmetrical.

[0049] The stereoscopic image viewing device is installed on a glasses frame with two legs, and becomes a glasses-type mobile phone stereoscopic image viewer or B-type stereoscopic glasses, which can also be directly called mobile phone stereoscopic glasses. It corresponds to viewing the stereoscopic images on two mobile phones arranged vertically side by side. The two mobile phones arranged vertically side by side are installed on a special bracket and can be tilted forward at a certain angle according to requirements for easy viewing. At this time, the left eye plane image is displayed on the left mobile phone screen, and the right eye plane image is displayed on the right mobile phone screen; when showing dynamic video, the left mobile phone and the right mobile phone should both be loaded with the synchronization software Syncplayer to ensure that the separated left eye image and right eye image can be played synchronously; when watching, the mobile phone stereoscopic glasses should be placed in the middle 7 to 11 cm away from the mobile phone screen, and the eccentricity should be placed at a position of about 5 mm, and the stereoscopic glasses should be put on to see the stereoscopic image; and the front and rear positions should be slowly moved to make it clearest, and then the spiral above the glasses should be fine-tuned to make the left and right eye images completely overlap, which looks more comfortable and does not make the eyes tired.

[0050] The stereoscopic image viewing device does not require two mobile phones placed side by side vertically, but only uses one mobile phone placed and fixed horizontally, and displays the left eye image and the right eye image side by side on the screen of this mobile phone, and is fixed with a small bracket and tilted slightly forward. At this time, the spacing between the eccentric lenses should be adjusted to be smaller, so the eccentricity is also smaller. The stereoscopic image can be seen with this stereoscopic glasses within a range of about 7 to 11 cm from the screen; the glasses frame and the mobile phone can also be installed in a box, and an adjustment device for the spacing between the two eccentric lenses and the mobile phone screen is added to form a head-mounted VR helmet.

[0051] The stereoscopic image viewing device is installed in a box with two vertically arranged mobile phones. The stereoscopic image viewing device is not embedded in a glasses frame, but is installed at the front upper end of the box. The viewing object is the left eye image and the right eye image on the two vertically arranged mobile phone screens. It is inserted at the rear end of the box to form a double vertical stereoscopic viewer. The adjustment distance of the center distance between the two eccentric lenses is maintained between 60 and 95 mm. A screw is installed at the lower end to adjust the distance between the mobile phone display screen and the eccentric lens. The adjustment range is 70 to 120 mm. When the middle value of the above two data is adjusted, the human eye can see its stereoscopic image when it is close to the observation window. Adjust the lower screw until the image is clearest, and adjust the upper screw so that the left eye image and the right eye image coincide, so that it looks more comfortable. There is no need to wear special stereoscopic glasses. Just watch from the front. The closer to the eccentric lens, the larger the field of view. The system is a quasi-naked eye system. This device is simply called a "double vertical screen stereoscopic viewer".

[0052] The application of the stereoscopic image viewing device in the high-definition remote monitoring system uses a pair of mobile phone 3D cameras to shoot vertically the left-eye stereoscopic image and the right-eye stereoscopic image "image pair", and transmits them directly to the left mobile phone and the right mobile phone of the dual vertical screen stereoscopic image viewer through 4G or 5G respectively, so that the stereoscopic image of the shooting location can be seen immediately, forming a high-definition remote real-time monitoring system; if the input is a professionally synthesized left-right side-by-side stereoscopic image, the application software will divide it into independent left-eye image and right-eye image and input them separately; if the left-eye image and the right-eye image taken horizontally are used and input separately, the stereoscopic image can also be viewed, but the stereoscopic image becomes smaller at this time.

[0053] The clarity of the stereoscopic image viewing device mentioned above is the sum of the clarity of the two mobile phone screens. If a mobile phone screen with 2560×1440 pixels is used, the clarity of the stereoscopic image is 2×2560, which is called 5k; if a 3840×2160 pixel display screen is used, its clarity reaches 8K, and the original optical system does not need to be changed.

[0054] The stereoscopic image viewing device described above can also achieve the same result by using only the display screen of the mobile phone or two dedicated high-definition display screens instead of directly using the mobile phone, that is, the clarity of the stereoscopic image is 2× the clarity of the display screen.

[0055] The present invention provides a full-color high-definition (5k-8k) high-brightness dual-vertical screen stereoscopic image device, the features of which are described in detail as follows:

[0056] It should be said that in CN201410554496.7, the standard image of 16:9 has almost reached the goal of full-color ultra-high definition (5k~8k) high brightness, and because it is directly used on the mobile phone screen, with an annual output of over 100 million, its cost performance is naturally the highest. However, this system cannot fully play its role for vertical stereoscopic images. And this aspect is used more in personal use. For example: three-dimensional portraits of people, wedding photography, self-media live broadcasts, close-up shots, etc. Professional aspects: medical treatment, precious cultural relics display, sculptures, handicrafts and industrial products, etc., most of which are vertically shot, with a height and width ratio of 4:3. Therefore, this patent is also based on the principle of non-paraxial optics to determine the parameters of the eccentric lens in order to achieve the best 3D viewing effect for such applications. The eccentric lens used to make this type of (abbreviated as Type B, or mobile phone) 3D glasses is very different from the 3D glasses (abbreviated as Type A, or computer) 3D glasses mainly used for viewing computer screens in our previous invention patent CN200910070421.0. The left and right eye images viewed with the A-type 3D glasses are relatively large, and the focal length of the eccentric lens used is very long, generally between 260 and 360 mm. The viewer is far away from the screen, 250 cm to several meters away, and the magnification is very small, about 1.2 to 1.8 times. Since the centers of the left and right eye images are far apart, the center distance of the left and right eye images of a laptop computer is about 170mm, so the required eccentricity is also relatively large, generally between 25 and 35mm; and the eccentric lenses of the current B-type (mobile phone) 3D glasses are very different from those of the A-type (computer). It is mainly used to view the left and right eye images on the vertical screens of two mobile phones. When two 6-7-inch mobile phones are placed side by side vertically, their center distance is about 75-87mm. Its eccentric focal length should be within 90-110mm, and the viewing distance from the screen is also about 70-100mm. Its magnification should be more than 1.8 times, and 3-15 times is the most appropriate. Its eccentricity is 2-14mm. This type of B stereo glasses also takes into account the situation of using only a 6-7 inch mobile phone display screen to watch stereo images. Because the left and right eye images are horizontally arranged side by side on the mobile phone screen, the center distance between the left and right eye images is about 66-78mm (smaller than the vertical center distance of 75-87mm mentioned above), so the eccentricity is required to be smaller. Therefore, if the eccentric lens of this type of B (mobile phone) stereo glasses uses an eccentric lens focal length, eccentricity and the distance between the eccentric lens and the display screen within the above range, the above two situations have been taken into account. At the same time, it should also be noted that the distance from the display screen to the lens (i.e. the object distance) should be less than the eccentric focal length, so that the virtual image formed is an upright image.

[0057] The pupil distance of the human eye varies from person to person. The flat field value for adults is generally about 65mm. The pupil distance of children over 8 years old will be several mm lower, while the height and strength of people will be several mm higher than this value. When it is possible to adjust the distance between the eccentric lenses, the center points of the two eccentric lenses should be aligned with the center points of your pupils. At this time, you should see that the left and right eye images overlap well and look comfortable in the stereoscopic image. Sometimes the left and right eye images are still a little apart. At this time, you can adjust the knob to make the two lenses farther away and increase the eccentric distance to make them overlap well. Sometimes the two left and right eye images move too much, so you can adjust them back a little to watch the most comfortable stereoscopic image.

[0058] When the lens is large, on the order of tens of millimeters, and the required eccentricity is only a few millimeters, especially when the distance between the left and right front lenses is adjustable, for the convenience of processing, it is not necessary to make a typical form of an eccentric lens with one side thick and the other side thin, but directly use the form of a normal round lens, that is, the highest point must be on the axis of rotational symmetry. But you should remember that the center of your pupil must be aligned with the eccentric point, and you should also remember that an important rule derived from non-paraxial optics can even be called the golden rule: the width of the center of the two round lenses must be greater than the width of the two pupils of the human eye, so that it is possible to make the left and right eye images move closer and closer to each other. Looking at some popular designs, especially the use of two fixed round lenses, which are generally fixed to the horizontal distance of the human eye pupil, that is, 65mm, it is obviously in violation of this golden rule. Why do some people still see three-dimensional? This is because the human eye has the function of automatic "eye alignment", which can make the left and right eye images shift to the central symmetry axis so that they can be combined to produce a three-dimensional sense. Some people have a strong "eye-to-eye" function. They can put the left and right eye images side by side on a mobile phone and use the "eye-to-eye" method to see the three-dimensional image. The so-called "picture-in-picture" that was popular a few years ago used this method to see the hidden three-dimensional image. But watching for a long time will make you feel very tired or even dizzy. Although some people have such adjustment devices, they do not know that the amount of eccentricity should be deducted, so the actual adjustment is limited, and the eccentricity required cannot be achieved. There is no real overlap, so it looks very tiring or even dizzy. In addition, the lack of the concept of eccentric focal length, the distance between the object and the image does not match it, and the clarity is poor. These are the main reasons why VR fell into a trough in 2017.

[0059] The current situation is that when people wear this kind of mobile phone 3D glasses, the distance from the display screen can be freely adjusted until the clearest view is achieved. Generally, the distance between the mobile phone display screen and the eccentric lens is between 70 and 110 mm, which is the clearest position for everyone. At the same time, the distance between the two lenses can be adjusted, that is, the size of the eccentric distance can be adjusted, so that the left and right eye images are completely overlapped, which should be the same as watching a computer or watching TV, and will not be tiring. People with normal eyes and hyperopia (presbyopia) can directly wear 3D glasses to watch. People who wear myopia glasses should wear myopia glasses first and then wear 3D glasses to watch. In the future, a myopia correction piece will be inserted in front of the lens, so that they don’t need to wear myopia glasses anymore.

[0060] This type of vertical screen stereo glasses is mainly used to directly watch the stereoscopic images on two mobile phones standing side by side, with good results. Because there is a device to adjust the distance between the two eccentric lenses, if the distance is adjusted smaller, you can also watch the stereoscopic image of the left and right eye images on a mobile phone side by side. This type of B stereo glasses (referred to as "mobile phone stereo glasses") is sealed and packaged, and designed as a "double vertical screen stereo imager". Two mobile phones are inserted vertically and side by side at the back end, and the left and right eye images taken vertically are input into the display screens of the two mobile phones respectively. By installing a more detailed adjustment device for adjusting the distance between the two eccentric lenses at the top of the device, and an adjustment device for precisely adjusting the distance between the eccentric lens and the mobile phone display screen at the bottom of the device, everyone can adjust to the most satisfactory level. At this time, you can see a larger stereoscopic image of a person, which is equivalent to seeing a life-size or even larger stereoscopic image of a person only 1 to 5 meters away from you. How exciting it will be! If you watch other types of images, they are also very clear and lifelike, with bright colors, as if they were reproduced in real life. Because it uses dual screens, its clarity can theoretically reach 5K~8K. Because it is fully enclosed, there is no extra image and stray light interference. Therefore, the image quality appears to be higher. Another convenience is that this design does not use a reflector, so there is no need to horizontally reverse the input left and right eye images like the double-side screen stereo viewer, otherwise the image seen is reversed, but directly use the original input left and right eye images, and there is no problem of reversal. We have talked about an application of this dual vertical screen machine, that is, when your family goes out to travel or visit a museum, they use two mobile phones of the same model to stand side by side and fix them vertically, and use them as stereo cameras for shooting. The left and right mobile phones in the dual vertical screen stereo imager at home are connected to it with 4G / 5G. In this way, the elderly at home are equivalent to seeing the same as their relatives outside. The same method can achieve real-time remote monitoring and telemedicine, which is very attractive.

[0061] Some people may think that the current development trend is small and light, so a mobile phone is often used to make it. In order to play games, it is generally made into a head-mounted type, which is indeed the case. But our objects and goals are different. Our main goal is high quality. It has doubled the clarity of a single screen, which is not easy to achieve. The mobile phone screens currently encountered can only achieve 3840 pixels (commonly known as 4k, which is extremely rare), and I have never heard of mobile phone screens above 4k. At present, we use it in non-game fields such as medical treatment, high-level cultural and sports appreciation, remote monitoring, etc. We use vertical or suspended viewing. It doesn't matter if it's heavier or bigger. It's heavier because there is an extra mobile phone, but the volume is not much larger, because the mobile phone is located on both sides and the center of gravity is moved back, and it will not feel heavy like a single-screen machine.

[0062] In the next round of development, the format of watching stereoscopic images directly with mobile phones will remain, because everyone has one or even two mobile phones, so why not make full use of this resource? But we must strive for excellence. It is also recommended that mobile phone manufacturers produce "couple phones" (that is, one mobile phone has a memory for the left eye and the other for the right eye), and give away this type B (mobile phone) stereo glasses and double mobile phone holders when selling. More high-end couple phones can even randomly give away dual vertical screen stereo viewers and dual side screen stereo viewers. Because in the case of large-scale production, its cost is only in the order of 100 yuan. In this way, once you buy it, you can watch programs such as stereoscopic photos and stereoscopic movies, and you can also engage in many jobs related to 3D business. This should be the best gift for couples. It can be used on honeymoons and after having babies. Brothers, sisters and classmates who are not well-off can buy this kind of mobile phone together for common use, because the time for using 3D is limited, and it does not hinder the use of mobile phones as communication functions. According to the newly released data, the per capita use of mobile phones in my country has reached 115%, and the proportion for the middle and upper classes is certainly much higher than this. Therefore, there are many people who own two mobile phones, usually one for official use and the other for personal use. As long as you realize that these two mobile phones of the same model can also solve problems such as watching 3D movies and taking 3D photos, they will definitely be the first choice. If mobile phone manufacturers see this, they will definitely be very lucky. There is also a situation where two mobile phones of different models can be used to display static left and right eye images. As long as the left and right eye images are adjusted to the same size, the amazing three-dimensional effect can also be seen with this type B stereo glasses. Therefore, this type B (mobile phone) stereo glasses can become the standard configuration of mobile phones, and type A (computer) stereo glasses can become the standard configuration of computers.

[0063] The next round of development will mainly be all-in-one machines designed for public and private places and the more affluent class. This means that you don't need to put the entire mobile phone in, you only need the display and related parts, and other heavier components such as batteries can be concentrated in a box and fixed somewhere else around you, so the weight is very light, and it can also be made into a helmet and worn on the head, which will not be heavier than the popular single-screen machine. At the same time, the two display screens are located on the left and right sides, which will not feel heavy like a single-screen machine, so it will be more comfortable to wear on the head. So you can also use this dual-screen all-in-one machine to play games, the image is large and clearer, which has opened up a unique and broad field.

[0064] As mobile phones are a necessity for the general public and are available in huge quantities, they will become cheaper and cheaper, especially the price of the display screen will inevitably be very low. In terms of the imaging system, we use a single eccentric lens, while other similar products have a much smaller original image surface, so a composite system of multiple lenses is required. Otherwise, the aberrations, especially the distortion, will be very obvious, so the cost in this regard will be relatively high. Therefore, on the whole, this type of B-type stereo glasses and dual vertical screen stereoscopic imager (device) have a great advantage in cost performance among similar products.

[0065] At present, it is better to put two 5G mobile phones on the left and right sides to make a double-side screen stereo viewer, or to put two mobile phones vertically side by side on the back to form a so-called double vertical screen stereo viewer. They can be viewed with a pillar or hanging style, so it doesn't matter whether it is heavier or larger. The first starting point is to maximize the performance. After the next round of double-side screen stereo viewers and double vertical screen stereo viewers appear, of course there is no need to use two mobile phones, which will be cheaper and more professional. As for the viewing method, whether it is a helmet type, a pillar type or a hanging type, it depends on personal preference. In terms of medical treatment, my personal suggestion is to use a hanging type, because it is much more comfortable and free than those that need to be tied or worn on the head. People can leave the observation window at any time to do something else. Look closely at the window when necessary. The closer to the window, the wider the field of view. Therefore, it is a quasi-naked eye stereoscopic system, which is another advantage of it.

[0066] When viewing dynamic images with the above-mentioned "glasses-type" or "viewer" full-color high-definition (5k~8k) dual vertical screen stereoscopic image viewing device, the left and right mobile phones should input the dedicated synchronization software Syncplayer to ensure that the separated left and right eye images can be played synchronously. Although the best results can be obtained by inputting the left and right eye images shot vertically for these two types of devices, if the left and right eye images shot horizontally are input, the stereoscopic can also be seen, but the image is smaller. For mobile phone stereoscopic glasses, the left and right stereoscopic images can also be viewed by placing the screen of a mobile phone in parallel. If the glasses and the mobile phone are packaged in a box, and a device for adjusting the distance between the two eccentric lenses and the mobile phone screen is added, this is consistent with the VR seen on the market, except that this is a product derived from non-paraxial optics. There are popular high-definition 2560×1440 pixel displays on the market. Since two such screens are used, its clarity is generally said to be 5K. If a 3840×2160 pixel display appears, its clarity will reach 8K, and the original optical system does not need to be changed. BRIEF DESCRIPTION OF THE DRAWINGS

[0067] Figure 1 It is a schematic diagram of the principle of a dual vertical screen stereoscopic image device.

[0068] Figure 2 It is a schematic diagram of the structure of mobile phone 3D glasses.

[0069] Figure 3 It is a schematic diagram of the structure of a dual vertical screen stereoscopic imager.

[0070] Figure 4 This is a schematic diagram of non-paraxial optics. DETAILED DESCRIPTION

[0071] The present invention is described in detail with reference to the accompanying drawings as follows:

[0072] The imaging system of the entire device is bilaterally symmetrical or anti-symmetrical, so a prime number in the figure (such as 1'; 2') indicates the symmetrical or anti-symmetrical part of the number (such as number 1; 2), and generally no additional explanation is given.

[0073] Figure 1 It is a schematic diagram of the principle of a full-color high-definition (5k-8k) dual vertical screen stereoscopic image device.

[0074] 1 is the left eccentric lens, 1' is the right eccentric lens; 2 is the left eye, 2' is the right eye; they represent the position of the pupils of the left and right eyes. 4 is the center point of the left optical axis, 4' is the center point of the right optical axis, that is, the left and right eccentric points. 5 is the symmetry center of the left main lens, 5' is the symmetry center of the right main lens; if the eccentricity is small, the main lens can be used directly as the eccentric lens, and the pupils of the left and right eyes of the person are facing the eccentric points 5 and 5' for viewing. 6 is the left optical axis, 6' is the right optical axis; that is, the left and right optical axes passing through the pupils and the eccentric points. 7 is the vertical left display screen, 7' is the vertical right display screen, side by side, and the left eye image and the right eye image are displayed on the screen respectively; it can also be a mobile phone placed horizontally, with the left and right eye images displayed side by side on the display screen. After the left and right eye images on the mobile phone screen are magnified by the eccentric lens, the left and right eccentric lenses have the function of shifting the magnified images toward the central axis and completely overlapping them at the imaging position, so that people can see the magnified three-dimensional image. 3, 3' are respectively the left and right baffles with light-transmitting holes; the shape and size of the holes enable people to see only the left and right eye images, respectively, while blocking the parts that are not needed to be seen and stray light.

[0075] Figure 2 This is a schematic diagram of the structure of the mobile phone 3D glasses of the present invention. This type of 3D glasses used for viewing mobile phones is also referred to as "B-type 3D glasses" or simply "mobile phone 3D glasses". The 3D glasses used for viewing large display surfaces such as computers in CN200910070421.0 are referred to as "A-type 3D glasses" or simply "computer 3D glasses". It includes the following 7 sub-figures.

[0076] Figure 2 (a) is the front view of the stereo glasses. It includes: a left-eye eccentric lens 1 and a right-eye eccentric lens 1'; 3, 3' are baffles with light-transmitting holes located in front of the left and right eccentric lenses 1, 1', and 8 is a nut for adjusting the distance between the two eccentric lenses. It has two long bolts on the left and right, which are screwed into the two long nuts fixed on the left and right baffles respectively.

[0077] Figure 2 (b) is a detailed schematic diagram of the left eccentric lens 1 and the right eccentric lens 1', which are circular lenses with one convex side and one slightly concave side, and the slightly concave side is close to the human eye. The figure with short slashes below is a cross-sectional view of the two eccentric lenses. Eccentric focal length f d The diameter is 40 to 120 mm, and the diameter is between 36 and 60 mm (42 mm is currently used). 4 is the left eccentric point of the eccentric lens, 4' is the right eccentric point of the eccentric lens. 5, 5' are the center points of the two corresponding main lenses.

[0078] Figure 2(c) is a diagram showing the relationship between the baffle, the eccentric lens and the adjusting screw nut. The left eccentric lens 1 and the right eccentric lens 1' are respectively embedded on the baffles 3, 3' and fixed as one. As shown in the figure, the opening on the baffle is anti-symmetrical on the left and right, and symmetrical on the top and bottom. The shape and size of the hole allow the human eye to see only the left eye image and the right eye image, respectively, while blocking the unnecessary parts and stray light. There are two longer nuts on the left baffle 3 and the right baffle 3', and an adjusting nut 8, each with a long bolt on the left and right ends. The left and right long bolts are respectively screwed into the two long nuts mentioned above. When the nut 8 is rotated clockwise, the distance between the left and right eccentric lenses increases, and vice versa, it decreases. Assuming that the distance between the human eyes is generally 65mm, under normal circumstances, the eccentric distance of 4mm can make the magnified images of the left and right eyes basically overlap. Therefore, the distance between the center points (5, 5') of the two eccentric lenses originally set should be 73mm. In fact, the adjustable distance between the centers of the two eccentric lenses (including the baffle) is 60 to 80 mm. There is a longer hook at the upper end of the baffle and a shorter hook at the lower end to hang it on an original eyeglass frame. The two frames are rectangular. Figure 2 (f) so that the nuts with left and right long bolts can be rotated. At this time, the left and right baffles and the left and right eccentric lenses can move smoothly along the square glasses frame, moving away or closer. The specific operation is to place the stereo glasses at a distance of about 70 to 100 mm from the center of the two vertical rows of mobile phones, put on the stereo glasses, and then slowly move your head forward or backward until you can see the clearest. At this time, you can see the stereo image. Then fine-tune the nut above the stereo glasses until the image looks the most comfortable. If two images are seen, the nut should be rotated clockwise to see if the two images are closer than before, then continue to tighten it clockwise until they overlap and the stereo image can be seen. Otherwise, it should be tightened in the opposite direction, which is less common. The rule for looking at stereo images is that the more you look, the more three-dimensional they become.

[0079] Figure 2 (d) is a top view of the stereo glasses. 9 is the left temple, 9' is the right temple. 8 is a nut with left and right long bolts for adjusting the eccentricity.

[0080] Figure 2 (e) is the left view of the stereo glasses.

[0081] Figure 2 (f) is a spectacle frame with two rectangular frames, the two frames are connected by a slightly round plate with a nose bridge groove in the middle. A small column with a groove is fixed on its upper end. Figure 2The device described in (c) includes: the baffle, the eccentric lens and the adjusting screw nut are all hung on the upper and lower frames of the glasses. By adjusting the upper screw nut 8, the baffle and the eccentric lens move apart and close together along the frame. The nut 8 is located in the groove of a small column above, which limits the horizontal displacement of the nut to keep it in the middle position.

[0082] Figure 2 (g) is a perspective view of the appearance of the stereo glasses.

[0083] Figure 3 It is a schematic diagram of the structure of a dual vertical screen stereoscopic imager (device), including 6 sub-figures. It is a box that packages B-type stereoscopic glasses (mobile phone stereoscopic glasses) and two vertically side-by-side mobile phones, and is equipped with various adjustment devices and shielding baffles, which completely avoids the interference of various unnecessary images and stray light, and is particularly suitable for portraits, medical applications and digital collections of precious cultural relics. The left and right eye images taken by the camera are transmitted through 4G or 5G, and the best stereoscopic image can be directly displayed by this device without image processing. It has its own independent advantages and is an important supplement to the invention patent CN201410554496.7 named as a stereoscopic viewer and a personal stereoscopic theater device with a 4G communication system (also referred to as a "dual side screen stereoscopic viewer").

[0084] Figure 3 (a) is a front view, 11 is a left eccentric lens of a dual vertical screen stereo imager, 11' is a right eccentric lens of a dual vertical screen stereo imager, which is centered on the left eccentric point 4 and the right eccentric point 4' as the center of the eccentric lens, see Figure 3 (e). The left and right pupils of a person are facing the center of the lens, that is, facing the eccentric point 4, 4'. Therefore, it increases the eccentric distance compared to the above-mentioned B-type (mobile phone) stereo glasses, so that the horizontal size of the two vertical mobile phones can be widened, and a good stereo image can still be seen. This is a truly legitimate eccentric lens. Although they are also round, the center of the circle represents the eccentric point. But their appearance characteristics are also somewhat different. The left side of the left eye eccentric lens is thicker and the right side is thinner, while the right eye eccentric lens is the opposite, the right side is thicker and the left side is thinner. As the eccentric distance increases, this difference in thickness also increases. 12 is a spiral to adjust the distance between the two eccentric lenses. About from 60 to 95mm. 13, 13' are left and right side hanging buckles. 14 is a top hanging buckle. It can be suspended by using a soft rope of appropriate size, and can be raised or lowered at will, and can be horizontal or slightly tilted to stay in a certain state as needed. 17 is an openable back panel, which can be opened to place two mobile phones side by side vertically. Then close the back cover. 18 refers to the entire outer shell box.

[0085] Figure 3(b) is a right side cross-sectional view, 7' is the right mobile phone display screen, on which the right eye image is displayed, 11' is the right eccentric lens of the dual vertical screen stereoscopic imager. 15' is the right hinge connection, which makes 17 an openable and closable back panel, and 19 is the bottom rotary wheel, which is used to adjust the distance between the eccentric lens and the display screen. Generally, it is 70 to 120 mm. The method is as follows: the bottom rotary wheel 19 has two long bolts on the left and right, and the bolts are screwed into two long nuts. These two long nuts are respectively fixed on the shell of the eccentric lens and the shell of the two mobile phones, so rotating the nut can adjust the distance between them. Other numbers have been Figure 3 As described in (a).

[0086] Figure 3 (c) is the top view, 12 is the spiral, adjusting the distance between the two eccentric lenses, it can be seen that it is located at the top front position. It can also be seen that the left and right eccentric lenses are in the same plane as the spiral at the front end. Figure 3 (b) shows the aerial position. 15, 15' are the left and right loose-leaf connections, 13, 13' are the left and right side hanging buckles, and 14 is the top hanging ring.

[0087] Figure 3 (d) is the back view. The dotted boxes indicated by 7 and 7' refer to two mobile phones standing side by side. The left and right screens of the mobile phones respectively display the left eye image and the right eye image. The back of the mobile phone is tightly attached to the back plate. 16 is an elastic strip. After the back cover is closed, press it once to lock it, and press it again to release it. The back cover can be opened to put in or take out the mobile phone. Figure 3 (e) is an eccentric lens, which takes the eccentric point as the center of the lens. The left and right pupils of a person are aligned with the center of the lens, that is, aligned with the eccentric point for viewing. The figure shows how it is made. That is, after the focal length of a circular convex lens is selected according to the design, the eccentric distance to be selected is determined to be d. This lens is called the main lens, as shown by the larger circle drawn with a dotted line in the figure. The diameter of the large circular lens is set to 2R, and the diameter 2r of the eccentric lens at this time should satisfy Rr=d / 2. At this time, the small black circle representing the eccentric lens should be tangent to the virtual circle representing the main lens on the horizontal x-axis, as shown in the figure. In the figure, 4 and 4' are the center points of the left and right optical axes, that is, the left and right eccentric points. 5 and 5' are the symmetry centers of the left and right main lenses. The advantage of using this real eccentric lens is that the eccentric distance adjustment distance is expanded, which can make the two vertical left and right display screens larger or the distance between them farther. The left and right eye images can also be overlapped by increasing the eccentric distance adjustment. This kind of real eccentric lens has one side thick and one side thin along the x direction. The left eccentric lens is thick on the left and thin on the right, while the right eccentric lens is thin on the left and thick on the right. The disadvantage is that the processing is more complicated. Figure 2The eccentric lens used in mobile phone stereo glasses is the main lens itself. The left and right eye viewing points are deviated from the center point of the lens and viewed at the eccentric point, so the adjustment of the eccentric distance is subject to certain restrictions. If this real eccentric lens is also used in mobile phone stereo glasses, the effect will be better. Of course, in the dual vertical stereo viewer, it is not impossible to use this real eccentric lens as the main lens as the eccentric lens like in mobile phone stereo glasses, but the adjustment range of the eccentric distance will be reduced. This is only when the eccentric distance is very small, the main lens and the eccentric lens can be combined into one. When watching a large display surface such as a computer, the eccentric distance required is 25 to 30 mm, which is absolutely impossible. The advantage of this combined eccentric lens is that it is easy to process and the optical performance remains unchanged at any angle along the optical axis of the lens. But it can only be achieved when the eccentric distance is very small, about a few mm.

[0088] The specific values ​​in the implementation of the present invention are given below:

[0089] The non-paraxial optical imaging formula of the eccentric lens is written as the following analytical formula (the plano-convex lens is approximated as a thin lens and its refractive index N is assumed to be 1.5):

[0090]

[0091] Among them, f d is the focal length of the eccentric lens, R is the radius of the main lens, a is the object distance, b is the image distance, M d is the magnification, d is the eccentricity, T is the lateral displacement of the magnified image, and γ is the size of the deflection angle.

[0092] The outer surface curvature radius of the plano-convex lens is R=50.7mm, the center thickness is h=7.5mm, and the width of a vertical 6.5-inch mobile phone is W=78mm, so the required horizontal displacement is theoretically T=76 / 2=38mm, so that the left and right eye images can be completely overlapped after being magnified. After optimization design, the eccentricity d=5mm is selected, and the distance from the top of the eccentric lens to the mobile phone display screen is selected, that is, the object distance: a=89.0mm, so that R=50.7mm, d=5.0mm, a=89.0mm

[0093] From (1), we can calculate: d =101.15mm (object space f d =100.53mm, image square f d =100.97)

[0094] Calculated from (2): b = 740.93 mm (750.73 mm)

[0095] Calculate from (3): M d =8.33 (8.43)

[0096] Calculated from (4): T = 36.63 mm ( 37.18 mm)

[0097] From (5), we can calculate: γ=2.835 0 (2.830 0 )

[0098] The above data are calculated by the above 5 approximate formulas, which are quite close to the results calculated by accurate calculation of this lens with a certain thickness. The accurate results are listed in the brackets of the above formula. It should be noted that the object distance a, image distance b and focal length f in the approximate calculation are d The starting point is calculated from the average thickness of the lens, that is, 7.5 / 2=3.75mm from the bottom plane of the lens. The object focal length and image focal length are the same size. The center thickness of the current plano-convex lens is 7.5mm. The convex spherical surface is close to the object surface, and the flat surface is close to the image surface. Therefore, the object focal length and image focal length are not equal. The object a and the object focal length are calculated from the object principal plane, which is the plane perpendicular to the symmetric optical axis through the eccentric point. It is calculated that the distance between it and the bottom plane of the lens is 7.34mm, while the image b and the image focal length are calculated from the image principal plane. The image principal plane is a plane perpendicular to the optical axis. It is calculated that the distance between it and the bottom plane of the lens is 4.90mm. They all pass through the lens and are parallel to the bottom plane of the lens. Whether it is an approximate calculation or an accurate calculation, the object distance a is less than the object focal length, so it is a positive virtual image. The position of the virtual image is located on the object side, which is determined by the size of b. In approximate calculations, the center of the pupil of the human eye is facing the eccentric point, but in precise calculations, the center of the pupil of the human eye is not facing the eccentric point d=5mm off-axis when viewing. After refraction in the lens, the emission distance is slightly lower. It is calculated to be 0.162mm lower than 5mm, that is, viewing at 4.84mm off-axis. This set of precise calculations is completely consistent with the eccentric lens mobile phone stereo glasses we designed. The theoretical value of its lateral offset T is 38mm. The T value accurately calculated using this set of design parameters is 37.18, with an error of only 2%, and the T value calculated by the above approximate formula is 36.63mm, with an error of only 3%. Since the mobile phone stereo glasses and the dual vertical screen stereo viewer can adjust a and d, they can fully meet the requirements, so that the left and right eye images are completely overlapped, and a perfect stereo image that does not look dizzy is obtained.

Claims

1. A stereoscopic image viewing device, characterized in that: It mainly includes an eccentric lens and a lens bracket. The eccentric lens has a light shield with a light-transmitting hole and is connected to the lens bracket. The distance between the geometric centers of the left and right eccentric lens circles is greater than the distance between the centers of the pupils of two eyes of a person, and is between 56 and 76 mm and is adjustable. The eccentric lens is a plano-convex lens and its refractive index N is 1.

5. The non-paraxial optical imaging formula of the eccentric lens is written as the following analytical formula: , Among them, fd is the focal length of the eccentric lens, R is the radius of curvature of the convex surface of the plano-convex lens, a is the object distance, b is the image distance, Md is the magnification of the eccentric lens, d is the eccentric distance, T is the lateral displacement of the magnified image, and γ is the size of the deflection angle; A smaller circular lens cut out of the main lens is called an eccentric lens. The focus fd of the eccentric lens refers to the intersection of the parallel light passing through the eccentric point and the central axis of the main lens. The distance between the intersection and the center of the main lens is called the focal length fd of the eccentric lens. The object distance a, image distance b and magnification Md are consistent with the definition of paraxial optics. The absolute value of the eccentricity of the eccentric lens is smaller than its radius. When the eccentricity approaches zero, the imaging formula of non-paraxial optics is exactly the same as that of Gaussian optics, and the lateral displacement and deflection angle also approach zero.

2. The stereoscopic image viewing device according to claim 1, characterized in that: The human eye sees through this slightly concave surface; the diameter of the main lens is between 30mm and 60mm; its Gaussian focal length f=60~120mm; the eccentricity is 1~16mm, so the eccentric point, represented by O' or D, is located at a distance of -1mm, +1mm from the center of the main lens to -16, +16 points in pairs; a circle is made with the eccentric point as the center and 14~28mm as the radius, and a circular lens is cut out from the main lens. This circular lens with a diameter of 28~56mm is the eccentric lens. If the eccentric point is located on the right side of the main lens, that is, in the direction of the positive X-axis, the cut-out eccentric lens is used as the left-eye eccentric lens, and its left side is thicker and its right side is thinner; if the eccentric point is located on the left side of the main lens, that is, in the direction of the negative X-axis, the cut-out eccentric lens is used as the right-eye eccentric lens, and its right side is thicker and its left side is thinner. The eccentric focal length fd of this eccentric lens varies with the Gaussian focal length f and d, and is smaller than f. The cross section cut along the diameter is also half-moon-shaped, and the flatter side faces the human eye.

3. The stereoscopic image viewing device according to claim 1, characterized in that: The eccentric lens is obtained from the main lens. When the required eccentricity is much smaller than the radius of the main lens, that is, only on the order of a few millimeters, the main lens is directly used as the eccentric lens. When setting up stereo glasses, the eccentric point of the main lens used as an eccentric lens in the positive X direction should be directly aligned with the pupil of the left eye, and the eccentric point of the other main lens used as an eccentric lens in the negative X direction should be directly aligned with the pupil of the right eye. In the design with an adjustment device, The starting positions of the two lenses should be placed in the above manner so that when the main lens is used as an eccentric lens, the distance between its two centers must be greater than the distance between the pupils of the viewer's eyes. The specific size is determined by the size of the eccentricity required to make the left eye image and the right eye image completely overlap.

4. The stereoscopic image viewing device according to claim 1, characterized in that A light-blocking plate with a hole is added in front of the eccentric lens. The shape of the hole will vary according to different applications, so that the left eye and the right eye can see the entire three-dimensional image while isolating the surrounding parts that do not need to be seen. The shape of the hole is symmetrical up and down, and the light-blocking plates in front of the left and right eccentric lenses are left-right anti-symmetrical.

5. The stereoscopic image viewing device according to claim 1, characterized in that The device is installed on a glasses frame with two legs to become a glasses-type mobile phone type stereoscopic image viewer, or simply mobile phone stereoscopic glasses, which corresponds to viewing the stereoscopic images on two mobile phones arranged vertically side by side; the two mobile phones arranged vertically side by side are installed on a special bracket and tilted forward at a certain angle as required for easy viewing. At this time, the left eye plane image is projected on the left mobile phone screen, and the right eye plane image is projected on the right mobile phone screen; when projecting static images, different models of mobile phones are allowed to be used, and the static images only need to be adjusted to the same size, and when projecting dynamic images, the two models of mobile phones can be adjusted to the same size. When recording a video in a dynamic state, the same model of mobile phones should be used. The left and right mobile phones should be installed with the synchronization software Syncplayer to ensure that the separated left eye images and right eye images can be played synchronously. When watching, the mobile phone 3D glasses should be placed in the middle 7 to 11 cm away from the mobile phone screen, and the eccentricity should be placed at about 4 mm. Put on the 3D glasses to see the 3D image; and slowly move the front and back positions to make the clearest view, and then fine-tune the spiral above the glasses to adjust the eccentricity so that the left and right eye images completely overlap, which looks more comfortable and does not cause eye fatigue.

6. The stereoscopic image viewing device according to claim 1, characterized in that Only one mobile phone is placed horizontally and fixed, and the left eye image and the right eye image are displayed side by side on this screen. At this time, the eccentricity should be adjusted to be small, and the three-dimensional image can be seen within the range of 7 to 11 cm from the screen; the glasses frame and the mobile phone are installed in a box, and an adjustment device for the distance between the two eccentric lenses and the mobile phone screen is added to form a head-mounted VR helmet.

7. The stereoscopic image viewing device according to claim 1, characterized in that: The device and two vertically arranged mobile phones are installed in a box at the front upper end of the box, and the viewing objects are the left eye images and right eye images on the screens of the two vertically arranged mobile phones; or two vertically arranged mobile phones are inserted at the rear end of the box to form a dual vertical stereoscopic viewer, and a screw is installed at the lower end to adjust the distance between the mobile phone display screen and the eccentric lens, and the adjustment range is 65 to 120 mm.

8. The stereoscopic image viewing device according to claim 5 or 7, characterized in that: It and two other mobile phones form a high-definition remote monitoring system, that is, two other 4G or 5G mobile phones of the same model are placed side by side vertically and fixed with a special clip to form a 3D camera. When the left-eye stereoscopic image and the right-eye stereoscopic image "image pair" are shot vertically, they are transmitted to the left mobile phone and the right mobile phone in the mobile phone stereo glasses or the dual vertical screen stereoscopic viewer through 4G or 5G respectively, so that the full-color, high-definition and high-brightness stereoscopic image of the shooting location can be seen immediately, forming a high-definition remote real-time monitoring system; including: if the input is a professional-level cultural and sports high-definition 3D program broadcast, which has been synthesized into a left and right side-by-side stereoscopic image, it will be divided into independent left-eye image and right-eye image through the application software and then input separately; if the left-eye image taken horizontally is used, the right-eye image is input separately in the same way, and the stereoscopic image can also be viewed.

9. The stereoscopic image viewing device according to claim 5 or 7, characterized in that: The clarity seen is the sum of the screen clarity of the two phones.

10. The stereoscopic image viewing device according to claim 9, characterized in that: The same result can be obtained by using only the mobile phone's display screen or two dedicated high-definition display screens instead of the mobile phone directly, that is, the clarity of the stereoscopic image is 2× the clarity of the display screen.

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