Reflective magnification binocular stereoscopic image viewing device

Abstract

The application is a reflection amplification binocular stereoscopic image viewing device. The images corresponding to the two eyes are located obliquely above and below the eyes respectively, and are imaged in front of the eyes through the reflection mirrors, forming stereoscopic vision. Since the left and right images avoid interference with each other, the center distance between the images does not have to be less than the pupil distance, the size can be larger, and the resolution can be reduced under the condition of ensuring the total number of pixels, thereby reducing the cost of the device. When a binocular camera is used to take a photo of the user, the printed picture is used as an image for the user to watch, and the user can get a very cheap customized experience solution. As an upgraded version of the stereoscopic vision of ordinary photos, it can promote the popularization of stereoscopic vision.

Description

Technical Field

[0001] This invention pertains to the field of stereoscopic mirrors for stereoscopic images of parallax displacement views of the same object, and particularly relates to a stereoscopic image viewing device that uses reflective optical elements in the optical path between the image and the viewer. Background Technology

[0002] Currently, binocular stereoscopic viewing devices are generally head-mounted displays. Internally, a screen positioned close to the eyes displays the left and right images of the stereoscopic image on each side. Since the human eye cannot directly view such a close image, a lens system is used to image it, creating a magnified virtual image at a suitable viewing distance. The images entering the left and right eyes are slightly different, and the brain processes these differences to create the stereoscopic vision. Because screen size is limited by interpupillary distance, ensuring a sufficient number of pixels in the image entering the eyes requires increasing screen resolution, thus increasing device cost and limiting the widespread adoption of such devices. Summary of the Invention

[0003] To address the above problems, this invention proposes a technical solution that solves the technical problem of ensuring both the clarity and wide field of view of the stereoscopic vision viewed by the user, while also ensuring that the acquisition of the stereoscopic vision is simple and inexpensive.

[0004] The solution adopted by this invention to solve its technical problem is: a reflective magnification binocular stereoscopic image viewing device, which consists of a main body, left and right images, left and right reflectors, an adjustment structure, and left and right convex lenses. The basic side configuration of the main body is a W-shape rotated 90° clockwise, with its central folded edge facing the viewer. The left and right images are respectively installed on the upper and lower side plates of the main body, and their horizontal centers are opposite to the left and right pupils of the viewer. The left and right reflectors are respectively installed on the upper and lower fixed plates in the middle of the main body, corresponding to the left and right images, and the left and right images are imaged in front of the left and right eyes of the viewer through the reflectors. The left and right convex lenses are installed opposite to the left and right reflectors to magnify and adjust the images formed by the reflectors, thereby improving the viewing effect.

[0005] The image can be generated from photographs, printed images, LCD screens, LED screens, and OLED screens, etc.

[0006] The image can be adjusted left and right to adapt to the viewer's interpupillary distance and the distance of the object of focus.

[0007] The portion of the image in the middle that is opposite to the viewer's visually sensitive area can be set to a higher resolution, ensuring a good viewing experience while reducing the resolution of other areas to save display resources.

[0008] The image can be equipped with a supplementary lighting device to improve the viewing experience.

[0009] The reflector is a plane mirror, set in a trapezoidal shape, wider at the bottom and narrower at the top, which allows the image to be formed completely and the two reflectors to not interfere with each other.

[0010] The convex lens is equipped with an adjustment mechanism to allow for left-right and front-back adjustments to accommodate different viewer interpupillary distances and object distances, thereby improving the viewing experience.

[0011] The main body and the convex lens adjustment mechanism can be equipped with hinges or assembly structures, which can be folded or disassembled to reduce the volume occupied and make them easy to carry.

[0012] Compared with existing technologies, this invention offers the following advantages: Since the corresponding images for each eye are located diagonally above and below the eyes respectively, interference between them is avoided. It is not limited by the requirement that the center distance between images must be less than the interpupillary distance, allowing for larger image sizes while reducing resolution to maintain the total pixel count, thus lowering equipment costs. When using a binocular camera to take photos of a user, and then printing the images for viewing, it provides a highly affordable and customized experience. As an upgraded version of stereoscopic vision for ordinary photos, it promotes the widespread adoption of stereoscopic vision. Attached Figure Description

[0013] Figure 1 This is the view from the side front when the device is opened according to an embodiment of the present invention.

[0014] Figure 2 This is the view from the side and rear when the device is opened according to an embodiment of the present invention.

[0015] Figure 3 This describes the situation when the object is folded up according to an embodiment of the present invention.

[0016] Figure 4 This is a schematic diagram of the stereoscopic vision formation of the present invention.

[0017] Figure 5 This is a reflection light path diagram of a single eye in this invention.

[0018] In the diagram: 1. Main body, 1-1. Side plate, 1-2. Upper fixed plate, 1-3. Lower fixed plate, 1-4. Baffle, 2. Adjustment mechanism, 2-1. Left and right adjustment seat, 2-2. Left and right adjustment screw, 2-3. Front and rear adjustment screw, 2-4. Front and rear adjustment plate, 2-5. Front and rear adjustment seat, 2-6. Lens mounting plate, 2-7. Left and right adjustment elongated hole, 2-8. Front and rear adjustment elongated hole, 3. Right convex lens, 4. Right reflector, 5. Right image, 6. Hinge, 7. Left convex lens, 8. Fill light, 9. Left reflector, 10. Left image. Detailed Implementation

[0019] The embodiments of the present invention will now be described in detail with reference to the accompanying drawings. This embodiment is based on the technical solution of the present invention and provides specific implementation methods and detailed design descriptions. However, the scope of protection of the present invention is not limited to the following embodiments. All implementations obtained by those skilled in the art based on the technical solution of the present invention without inventive modification should be included within the scope of protection of the present invention.

[0020] See Figure 1 , 2 This invention comprises a main body, left and right images, left and right reflectors, an adjustment mechanism, and left and right convex lenses. The main body 1 includes upper and lower side plates 1-1, an upper fixing plate 1-2, and a lower fixing plate 1-3. In use, the main body 1 has a basic W-shaped side profile that rotates 90° clockwise. The left image 10 and the right image 5 are mounted on the upper and lower side plates 1-1. The horizontal distance between the centers of the two images is close to the viewer's interpupillary distance; the specific distance depends on the distance of the object of interest being photographed and the interpupillary distance. Figure 4 Let AB be the interpupillary distance of the viewer, O be the midpoint of AB, the distance of the object of interest E from the eye be OE, CD be the distance between the image and the object of interest, and F be the midpoint of CD. Then CD = AB * EF / OE. Still images (pictures) can be moved left and right within the grooves set on side panel 1-1. Dynamic images (display screens) can have their left and right positions adjusted using software.

[0021] This embodiment is designed as a foldable structure. Hinges 6 are installed between the side plate 1-1, upper fixed plate 1-2, lower fixed plate 1-3, and adjustment mechanism 2, connecting them via pins and providing some damping. A baffle 1-4 is designed on the outer side of the hinge between the side plate and the fixed plate, which can be positioned when the hinge is opened. The width of the baffle is designed such that the included angle between the relevant plate surfaces when adjacent baffles contact is the angle required by our design, ensuring a good viewing effect. This design allows the product to be folded up after use to reduce its volume. Figure 3 As shown, it is easy to carry. Of course, the components can also be designed as an assembly structure, which can be disassembled for easy carrying. Or it can be designed as a whole to simplify the structure and reduce weight.

[0022] The left reflector 9 and the right reflector 4 are mounted on the upper fixed plate 1-2 and the lower fixed plate 1-3, respectively, with their centers opposite to the centers of the left image 10 and the right image 5, respectively. The relevant parts of the main body are designed at appropriate angles so that the virtual images formed by the left and right images through the left and right reflectors are located directly in front of the viewer's eyes.

[0023] The left convex lens 7 and the right convex lens 3 are respectively mounted opposite to the left image 10 and the right image 5 via the adjustment mechanism 2. The upper fixing plate 1-2 and the lower fixing plate 1-3 have elongated holes 2-7 for left and right adjustment. Left and right adjustment screws 2-2 pass through these holes to fix the left and right adjustment seat 2-1, allowing adjustment of the left and right positions. The front and rear adjustment plate 2-4 has elongated holes 2-8 for front and rear adjustment. Front and rear adjustment screws 2-3 pass through these holes and are mounted on the front and rear adjustment seat 2-5, allowing adjustment of the front and rear position of the front and rear adjustment plate 2-4. Through the adjustment mechanism 2, the distance between the two convex lenses and their front and rear positions can be adjusted to the optimal values.

[0024] Fill lights 8 are installed on the upper fixed plate 1-2 and the lower fixed plate 1-3 to increase the brightness of the image when the ambient light is too low.

[0025] See Figure 1 , 4 The objects of interest in the left image 10 and the right image 5 are reflected by the left mirror 9 and the right mirror 4 to form virtual images C and D, which are the same size as the images. These two virtual images are located in front of the left eye A and the right eye B. The virtual images C and D are magnified and far away by the left convex lens 7 and the right convex lens 3 and coincide with E, completely reproducing the light path when the human eye directly views the object, thus forming stereoscopic vision.

[0026] See Figure 5 This diagram shows the reflected light path of a single eye. JKLM represents the image, which is reflected by mirror FGHI to form a virtual image ABCD. According to the law of reflection of a plane mirror, the image and the virtual image are mirror-symmetric about the mirror. Point E is the viewing point. The isosceles trapezoid FGHI is formed by the regular pyramid formed by the image and the virtual image ABCD, tangent to the plane of the mirror. Light rays emitted from points within the image are reflected at their corresponding points within this trapezoid and then travel towards the eye. For example, if point Y is mirror-symmetric to point X, and line XE intersects the plane FGHI at point Z, then light rays emitted from point Y, after being reflected at point Z, will travel along ZE towards point E and enter the eye (X and Y are mirror-symmetric about the plane FGHI, and line XE intersects the plane FGHI at point Z; according to the law of reflection of a plane mirror, light rays along YZ will travel along ZE after reflection). Each point within the image corresponds one-to-one with each point in the virtual image. Clearly, this isosceles trapezoid is the smallest mirror required for the image to be fully viewed by the eye at point E.

[0027] The image length KL and width LM, the vertical angle ∠UER during viewing, the reflector tilt angle ∠UNQ, and the distance RS between the reflector base HI and the virtual image base DC are predetermined values. From these predetermined values, the corresponding reflector dimensions, the included angles and dimensions between various components, and the image resolution can be calculated. The results are analyzed to determine if they are satisfactory. If defects are found, the predetermined values ​​need to be analyzed and improved before recalculating. This iterative process of trial and error can yield suitable product dimensions, guiding product production.

[0028] Let's discuss the use of Figure 5A method for determining the dimensions of a reflecting mirror. Figure 5 In triangle ABCD, V and W are the midpoints of AD and BC, U and R are the midpoints of AB and CD, and O is the intersection of VW and UR. Therefore, EO is perpendicular to the ABCD plane. Within isosceles triangle ΔDCE, HI is parallel to CD, so HI / CD = SE / RE. Within triangle ΔORE, OR is half the image width, and ∠OER is half the vertical angle ∠UER. Therefore, RE = OR / sin(∠UER / 2), and OE = OR / tan(∠UER / 2). Thus, HI = SE*CD / RE = (RE - RS)*CD / RE. In ΔRNS, RS and ∠RNS are known, and ∠SRN = 180° - ∠ORS = 180° - (90° - ∠UER / 2) = 90° + ∠UER / 2, ∠RSN = 180° - ∠SRN - ∠RNS = 180° - (90° + ∠UER / 2) - ∠RNS = 90° - ∠UER / 2 - ∠RNS. Therefore, RN and SN can be obtained using the Law of Sines. In ΔUNQ, given UN = UR (image width) + RN, ∠UNQ, ∠UQN = 180° - ∠UNQ - ∠QUN = 180° - ∠UNQ - (90° - ∠UER / 2) = 90° - ∠UNQ + ∠UER / 2, ∠QUN = 90° - ∠UER / 2, we can calculate UQ and QN. From QN and SN, we can calculate the mirror height QS = QN - SN. In ΔABE, UE = RE, FG is parallel to AB, therefore FG / AB = QE / UE, FG = QE*AB / UE = (UE - UQ)*AB / UE. The pixel pitch of the image corresponding to the minimum resolvable angle of the human eye of 0.017° is OE*tan0.017°.

[0029] This example designs the image size as 290×200mm (A4 size, excluding edges). The vertical angle ∠UER is designed to be 50°, resulting in a viewing point distance of 214.5mm from the virtual image (OE), and a corresponding horizontal angle ∠WEX of 68°. The reflector tilt angle ∠UNQ is designed to be 60°, and the distance between the bottom edge of the reflector (HI) and the bottom edge of the virtual image (CD) (RS) is 45mm. At this minimum, the reflector's bottom edge (HI) is 234.8mm long, its top edge (FG) is 25.0mm long, and its height (SQ) is 179.2mm. Of course, the actual reflector can be enlarged while meeting these minimum dimensions, as long as it does not interfere with other components. The angle between the image and the reflector (∠ONP) is the same as the reflector tilt angle (∠UNQ), which is 60° in this example. This angle is the same as the angle between the upper and lower fixed plates and the side plates. This example uses a convex lens with a focal length of 220mm. Adjusting the distance between the convex lens and the virtual image ABCD adjusts the magnified image distance to reproduce the object's position. Corresponding to OE and the minimum resolvable angle of the human eye of 0.017°, the pixel pitch on the image is 0.064mm (214.5×tan0.017°), corresponding to a resolution of 400dpi. This resolution is used to ensure quality for the area most sensitive to the human eye, while other areas can use a lower resolution without affecting the user experience, thus saving resources.

Claims

1. A reflective magnification binocular stereoscopic image viewing device, comprising a main body, left and right images, left and right reflectors, an adjustment mechanism, and left and right convex lenses, characterized in that: The basic side profile of the main body is a W-shape rotated 90° clockwise, with its central folded edge facing the viewer. The left and right images are respectively mounted on the upper and lower side plates of the main body, with their centers aligned with the viewer's left and right pupils. The left and right reflectors are respectively mounted on the upper and lower fixed plates in the middle of the main body, corresponding to the left and right images. The left and right images are projected onto the viewer's left and right eyes through the reflectors. The left and right convex lenses are installed opposite to the left and right reflectors to magnify and adjust the images projected by the reflectors, improving the viewing experience.

2. The binocular stereoscopic image viewing device according to claim 1, characterized in that: The image can be generated from photographs, printed images, LCD screens, LED screens, and OLED screens, etc.

3. The binocular stereoscopic image viewing device according to claim 1, characterized in that: The image can be adjusted left and right to adapt to the viewer's interpupillary distance and the distance of the object of focus.

4. The binocular stereoscopic image viewing device according to claim 1, characterized in that: The portion of the image in the middle that is opposite to the viewer's visually sensitive area can be set to a higher resolution, ensuring a good viewing experience while reducing the resolution of other areas to save display resources.

5. The binocular stereoscopic image viewing device according to claim 1, characterized in that: The image can be equipped with a supplementary lighting device to improve the viewing experience.

6. The binocular stereoscopic image viewing device according to claim 1, characterized in that: The reflector is a plane mirror, set in a trapezoidal shape, wider at the bottom and narrower at the top, which allows the image to be formed completely and the two reflectors to not interfere with each other.

7. The binocular stereoscopic image viewing device according to claim 1, characterized in that: The convex lens is equipped with an adjustment mechanism to allow for left-right and front-back adjustments to accommodate different viewer interpupillary distances and object distances, thereby improving the viewing experience.

8. The binocular stereoscopic image viewing device according to claims 1 and 7, characterized in that: The main body and adjustment mechanism can be equipped with hinges or assembly structures, which can be folded or disassembled to reduce the volume occupied and make them easy to carry.

Images