Portable reading device

Abstract

The invention relates to the technical field of myopia prevention and control, in particular to a portable reading device. Comprising a supporting mechanism, a reading mechanism and a connecting mechanism, the supporting mechanism is used for height supporting of the reading mechanism, and the connecting mechanism is used for angle adjustment of a structure in the reading mechanism; the reading mechanism comprises a first refraction part used for reading characters or images in an object on the supporting seat; and the second refraction piece is used for carrying out secondary refraction on the visual field. According to the portable reading device provided by the invention, through cooperation of the first fixing plate, the second fixing plate, the supporting seat, the height adjusting assembly and the connecting mechanism, the height of the first fixing plate can be adjusted through adjustment of the height adjusting assembly, and the whole device is supported through the supporting seat; the angle and the distance between the second fixing plate and the first fixing plate can be adjusted through the connecting mechanism, the reading device is stored, the occupied area is reduced, the transportation cost is reduced, and the storage convenience is improved.

Description

Technical Field

[0001] The present invention relates to the technical field of myopia prevention and control, and in particular to a portable reading device. Background Art

[0002] There are many types of myopia prevention and control glasses on the market, each with its own advantages. Some telephoto glasses use a fog screen with two roughly parallel mirrors, one convex and one concave, placed between the chest and the book. This can prevent people from lowering their heads and blocking their access to the book, which is equivalent to doubling the distance between the two mirrors. However, it also blocks the view in front of the eyes, making it inconvenient to see the book under the mirrors and turn pages. There are also telephoto fog screens that use the principle of AI glasses, placing the electronic screen flat at the bottom and relying on a semi-transparent and semi-reflective mirror and a curved reflector. The tilted semi-transparent mirror is used to reflect the bottom display screen through the tilted semi-transparent mirror above to the concave mirror in front. After being magnified, it passes through the semi-transparent mirror and reflects back to the front of the eye to form an image. The display screen below the semi-transparent mirror can be zoomed out and imaged, but the cost is relatively high.

[0003] Existing telescopes are not easy to adjust in height when in use, and are not convenient to store when not in use or when transporting. They occupy a large area. In addition, they are not stable when adjusting the angle of the refracted sight, and the connecting arm is easily bent after long-term adjustment.

[0004] To this end, a portable reading device is designed to provide another technical solution to the above technical problem. Summary of the Invention

[0005] Based on this, it is necessary to provide a portable reading device to solve the technical problems raised in the above background technology.

[0006] In order to solve the above technical problems, the present invention adopts the following technical solutions:

[0007] A portable reading device comprises a supporting mechanism, a reading mechanism and a connecting mechanism, wherein the supporting mechanism is used to provide height support for the reading mechanism, and the connecting mechanism is used to adjust the angle of the structure in the reading mechanism;

[0008] The supporting mechanism comprises:

[0009] A support base, used to support the entire device;

[0010] A height adjustment component is used to connect the support base and the reading mechanism and adjust the height of the reading mechanism on the support base;

[0011] The reading mechanism comprises:

[0012] A first refraction member is located at the top of the height adjustment assembly and is used to adjust the text or image on the reading object on the support base;

[0013] a second refraction member, located between the first refraction member and the height adjustment assembly, and configured to perform secondary refraction on the visual field refracted by the first refraction member;

[0014] The connecting mechanism includes two connecting arms, which are respectively located at two ends of the first fixing plate and the second fixing plate, and are used to connect the first fixing plate and the second fixing plate.

[0015] As a preferred embodiment of the portable reading device provided by the present invention, the height adjustment assembly includes a first connecting block, a second connecting block, a third connecting block, a limit buckle and a fastening bolt, the bottom of the first connecting block is fixed to the support seat, the internal sliding connection of the top of the first connecting block is the second connecting block, the internal sliding connection of the top of the second connecting block is the third connecting block, the top of the third connecting block is tilted and fixed with an assembly plate for connecting the reading mechanism, a limit buckle for limiting the height of the third connecting block is provided on one side of the second connecting block, a fastening bolt is threadedly connected to one side of the second connecting block and at the top of the limit buckle, and the fastening bolt is slidably connected to the third connecting block.

[0016] As a preferred embodiment of the portable reading device provided by the present invention, the angle between the third connecting block and the assembly plate is 10 degrees to 80 degrees.

[0017] As a preferred embodiment of the portable reading device provided by the present invention, an adjustment groove is provided inside one side of the third connecting block, and the limiting buckle is slidably connected to the adjustment groove. Positioning grooves are evenly provided inside one side of the third connecting block and at one end of the adjustment groove. The limiting buckle and the positioning groove, and the fastening bolt and the positioning groove are all slidably connected, and the positioning groove and the adjustment groove are connected.

[0018] As a preferred embodiment of the portable reading device provided by the present invention, a pin is fixed inside the limit buckle, and the pin is rotatably connected to the second connecting block. A torsion spring is fixed between the limit buckle and the second connecting block and on the outside of the pin. A positioning block is fixed at one end of the top of the limit buckle, and the positioning block is slidably connected to the positioning groove.

[0019] As a preferred embodiment of the portable reading device provided by the present invention, the first refraction member includes a second fixing plate and a second refraction mirror, and the second refraction mirror is fixed inside the bottom end of the second fixing plate;

[0020] The second refractive element includes a first fixing plate and a first refractive mirror. The first refractive mirror is fixed inside the top end of the first fixing plate.

[0021] As a preferred embodiment of the portable reading device provided by the present invention, a light strip is fixed inside one side of the first fixing plate.

[0022] As a preferred embodiment of the portable reading device provided by the present invention, a second assembly groove is provided on the inner side of the top center of the assembly plate, and a first assembly groove is provided inside the top of the assembly plate and at both ends of the second assembly groove. A connecting plate is fixed to the bottom of the first fixing plate, and the connecting plate is slidably connected to the assembly plate. Positioning bolts are threadedly connected to the interior of the connecting plate and at positions corresponding to the first assembly groove and the second assembly groove, and an extrusion bolt is also threadedly connected to the interior of the connecting plate.

[0023] As a preferred embodiment of the portable reading device provided by the present invention, both sides of the connecting arm are connected to the first fixed plate and the second fixed plate respectively through connecting parts, and a fastening plate is bolted between the two connecting arms and located on the side of the second fixed plate close to the first fixed plate.

[0024] As a preferred embodiment of the portable reading device provided by the present invention, a first limiting column is fixed inside the two ends of the first fixing plate and at the bottom of the corresponding connecting piece, a second arc-shaped limiting groove is provided at the bottom of one side of the connecting arm and at a position corresponding to the first limiting column, the second arc-shaped limiting groove is slidably connected to the first limiting column, a first arc-shaped limiting groove is provided inside the two ends of the second fixing plate and at one side of the corresponding connecting piece, a second limiting column is fixed inside the connecting arm near one end of the second fixing plate and at a position corresponding to the first arc-shaped limiting groove, and the second limiting column is slidably connected to the first arc-shaped limiting groove.

[0025] It can be seen without a doubt that the above-mentioned technical solution of this application can definitely solve the technical problem to be solved by this application.

[0026] At the same time, through the above technical solutions, the present invention has at least the following beneficial effects:

[0027] The present invention provides a portable reading device. Through the cooperation of a first fixing plate, a second fixing plate, a support base, a height adjustment assembly, and a connecting mechanism, the height of the first fixing plate can be adjusted by adjusting the height adjustment assembly, and the entire device can be supported by the support base. The angle and distance between the second fixing plate and the first fixing plate can also be adjusted by the connecting mechanism. Therefore, when transporting, the reading device can be stored to reduce the occupied area, thereby reducing transportation costs and improving storage convenience.

[0028] The light strip can provide supplementary light to the reading object on the support base, so that the user can see the text or image on the reading object more clearly when the user is in front of the first fixing plate;

[0029] By cooperating with the first connecting block, the second connecting block and the third connecting block, the distance between the first fixing plate and the support seat can be adjusted by adjusting the height of the third connecting block inside the second connecting block. When stored, the second connecting block and the first connecting block, as well as the third connecting block and the second connecting block, can be separated. Thus, after the first fixing plate and the second fixing plate are folded through the connecting mechanism, the first fixing plate is located on the top of the support seat, and the stored second connecting block and the third connecting block are placed between the first fixing plate and the support seat, thereby forming a smaller occupied area. At the same time, the first fixing plate can be adjusted to different heights as needed.

[0030] By cooperating with the extrusion bolt, the positioning bolt and the limiting buckle, the third connecting block and the connecting plate can be slidably assembled. The positioning bolt is positioned inside the first assembly groove and the second assembly groove, and the extrusion bolt is squeezed to achieve stability after assembly. At the same time, the limiting buckle is rotated on the second connecting block to position the height of the third connecting block on the second connecting block, thereby preventing the second connecting block from being separated from the third connecting block and the connecting plate.

[0031] By cooperating with the connecting arm, the fastening plate and the connecting piece, the relative parallelism and stability between the two connecting arms can be increased by the fastening plate. At the same time, the two ends of the connecting arm are respectively connected to the first fixing plate or the second fixing plate through the connecting piece, so that the second fixing plate can be assembled on the first fixing plate. At the same time, the rotation adjustment angle of the connecting arm on the first fixing plate can be limited by the first limiting column, and the rotation angle of the second fixing plate on the connecting arm can be limited by the second limiting column, so as to achieve the adaptive angle adjustment of the second fixing plate.

[0032] The folded reading device can be easily stored during transportation, and when in use, it can be easily assembled by rotating the connecting plate, squeezing the bolts, positioning bolts, tightening the bolts, and manually pressing the limit buckles through tools.

[0033] By concealing the splicing and positioning screws (or bolts) in the reading device, the overall aesthetics of the reading device is enhanced. BRIEF DESCRIPTION OF THE DRAWINGS

[0034] In order to more clearly illustrate the technical solutions of the embodiments of the present invention, the following is a brief introduction to the drawings required for use in the description of the embodiments. Obviously, the drawings described below are some embodiments of the present invention. For ordinary technicians in this field, other drawings can be obtained based on these drawings without paying any creative work.

[0035] Figure 1 It is a schematic diagram of the overall structure of the present invention;

[0036] Figure 2 It is a folding schematic diagram of the present invention;

[0037] Figure 3 This is a schematic diagram of the present invention in use;

[0038] Figure 4 It is a rear view of the present invention;

[0039] Figure 5 For the present invention Figure 4 A local enlarged view of point A;

[0040] Figure 6 It is a structural schematic diagram of the first fixing plate of the present invention;

[0041] Figure 7 For the present invention Figure 6 A partial enlarged view of point B;

[0042] Figure 8 For the present invention Figure 6 A partial enlarged view of point C;

[0043] Figure 9 Schematic diagram of the structure of the connecting arm of the present invention;

[0044] Figure 10 For the present invention Figure 9 A partial enlarged view of point D;

[0045] Figure 11 It is a structural schematic diagram of the height adjustment assembly of the present invention;

[0046] Figure 12 is a structural schematic diagram of the third connecting block of the present invention;

[0047] Figure 13 This is a structural diagram of the first connecting block of the present invention;

[0048] Figure 14 It is a structural schematic diagram of the limiting buckle of the present invention;

[0049] Figure 15 This is a diagram of the visual field refraction path when the present invention is used.

[0050] In the figure: 1. first fixing plate; 11. first refractive mirror; 12. connecting plate; 121. extrusion bolt; 122. positioning bolt; 13. light strip; 14. first limiting column; 2. second fixing plate; 21. second refractive mirror; 22. first arc-shaped limiting groove; 3. support seat; 4. height adjustment assembly; 41. first connecting block; 42. second connecting block; 421. sliding groove; 422. assembly hole; 43. third connecting block; 431. first assembly groove; 432. second assembly groove; 433. adjustment groove; 434. positioning groove; 435. assembly plate; 44. limiting buckle; 441. positioning block; 442. pin; 443. limiting block; 45. fastening bolt; 5. connecting mechanism; 51. connecting arm; 52. fastening plate; 53. connecting piece; 54. second arc-shaped limiting groove; 55. second limiting column. DETAILED DESCRIPTION

[0051] In order to make the purpose, technical solutions and advantages of the present invention more clearly understood, the present invention will be further described in detail below with reference to the accompanying drawings and embodiments. It should be understood that the specific embodiments described herein are only used to explain the present invention and are not intended to limit the present invention.

[0052] In order to enable those skilled in the art to better understand the solutions of the present invention, the technical solutions in the embodiments of the present invention will be clearly and completely described below with reference to the accompanying drawings.

[0053] It should be noted that, in the absence of conflict, the embodiments of the present invention and the features and technical solutions therein may be combined with each other.

[0054] It should be noted that similar reference numerals and letters denote similar items in the following drawings, and therefore, once an item is defined in one drawing, it does not need to be further defined or explained in subsequent drawings.

[0055] Example 1

[0056] Reference Figures 1-15 , a portable reading device, comprising a supporting mechanism, a reading mechanism and a connecting mechanism 5, wherein the supporting mechanism is used to provide height support for the reading mechanism, and the connecting mechanism 5 is used to adjust the angle of the structure in the reading mechanism;

[0057] The supporting mechanism includes:

[0058] Support base 3, used to support the entire device, and can achieve bottom support by contacting the bottom with the desktop or other supporting objects;

[0059] Preferably, the four end corners of the bottom of the support base 3 are fixed with anti-skid pads, which can prevent the support base 3 from sliding on objects such as a desktop due to smoothness;

[0060] A height adjustment component 4 is used to connect the support base 3 and the reading mechanism and adjust the height of the reading mechanism on the support base 3;

[0061] The height adjustment assembly 4 includes a first connecting block 41, a second connecting block 42, a third connecting block 43, a limit buckle 44 and a fastening bolt 45. The bottom of the first connecting block 41 is fixed to the support seat 3, and the second connecting block 42 is slidably connected to the top of the first connecting block 41, so that the second connecting block 42 can be assembled on the top of the first connecting block 41 by sliding, and the second connecting block 42 is fixed inside the first connecting block 41 by corresponding extrusion bolts or positioning bolts, so that the second connecting block 42 can be assembled and disengaged from the first connecting block 41. A third connecting block 43 is slidably connected to the interior of the top of the second connecting block 42. A sliding groove 421 is formed in the interior of the top of the second connecting block 42. The second connecting block 42 and the third connecting block 43 are slidably connected via the sliding groove 421, thereby enabling the position of the third connecting block 43 inside the top of the second connecting block 42 to be adjusted. The height of the reading mechanism is then adjusted via the third connecting block 43. An assembly plate 435 for connecting the reading mechanism is obliquely fixed to the top of the third connecting block 43. The assembly plate 435 is assembled with the reading mechanism to fix the reading mechanism to the top of the height adjustment assembly 4.

[0062] In this embodiment, the included angle between the third connecting block 43 and the assembly plate 435 is 10 degrees to 80 degrees, and can be specifically 30 degrees, 45 degrees, 60 degrees, etc.

[0063] Preferably, a second assembly groove 432 is provided on the inner side of the top center of the assembly plate 435, and a first assembly groove 431 is provided inside the top of the assembly plate 435 and at both ends of the second assembly groove 432, so that when the assembly plate 435 is located on the inner side of the reading mechanism, a positioning effect can be achieved through the first assembly groove 431 and the second assembly groove 432.

[0064] Preferably, a connecting bolt is slidably assembled at the bottom of the support seat 3 and at a position corresponding to the inner side of the first connecting block 41, and the end of the connecting bolt is threadedly connected to the second connecting block 42, thereby further increasing the connection firmness between the second connecting block 42 and the first connecting block 41.

[0065] A limiting buckle 44 for limiting the height of the third connecting block 43 is provided on one side of the second connecting block 42, so that the interior of the third connecting block 43 can be entered through the limiting buckle 44 to limit the height position of the third connecting block 43 inside the second connecting block 42 and cannot be adjusted. A fastening bolt 45 is threadedly connected to the top of the limiting buckle 44 on one side of the second connecting block 42, and the fastening bolt 45 is slidably connected to the third connecting block 43, so that the interior of the third connecting block 43 can be entered through the fastening bolt 45 or the fastening bolt 45 can squeeze the third connecting block 43 to achieve the limitation of the third connecting block 43 after the height is adjusted at the top of the second connecting block 42;

[0066] Preferably, an adjustment slot 433 is provided inside one side of the third connecting block 43, and the limiting buckle 44 is slidably connected to the adjustment slot 433. Positioning slots 434 are uniformly provided inside one side of the third connecting block 43 and at one end of the adjustment slot 433. The limiting buckle 44 and the positioning slot 434, as well as the fastening bolt 45 and the positioning slot 434 are all slidably connected, and the positioning slot 434 and the adjustment slot 433 are connected. The positioning slot 434 is U-shaped, and the outer side of the positioning slot 434 is chamfered to facilitate the fastening bolt 45 to enter the inner side of the positioning slot 434.

[0067] The interior of the second connecting block 42 and a position corresponding to the top of the limiting buckle 44 are provided with an assembly hole 422, and the assembly hole 422 is connected to the sliding groove 421, so that the top of the limiting buckle 44 enters the interior of the sliding groove 421 through the assembly hole 422, thereby limiting the height of the position of the third connecting block 43, and a pin shaft 442 is fixed to the interior of the limiting buckle 44, and the pin shaft 442 is rotatably connected to the second connecting block 42, so that the limiting buckle 44 can rotate on one side of the second connecting block 42 with the pin shaft 442 as the center of the circle, and a torsion spring is fixed between the limiting buckle 44 and the second connecting block 42 and on the outside of the pin shaft 442, so that the bottom generated by the rotation of the limiting buckle 44 is close to the second connecting block The block 42 drives the torsion spring to store force at this time, and after the external force disappears, the torsion spring rebounds after storing force, so that the bottom of the pin shaft 442 moves away from the second connecting block 42, and a positioning block 441 is fixed to one end of the top of the limiting buckle 44, and a limiting block 443 is fixed to the other end of the top of the limiting buckle 44, and the height dimension of the positioning block 441 is smaller than the height dimension of the limiting block 443. The limiting block 443 and the adjusting slot 433, as well as the positioning block 441 and the positioning slot 434 are all slidably connected, so that the rotation of the limiting buckle 44 on the second connecting block 42 causes the positioning block 441 and the limiting block 443 to move inside the assembly hole 422, so that the positioning block 441 enters or leaves the interior of the positioning slot 434;

[0068] Reading institutions include:

[0069] The first refraction member is located at the top of the height adjustment assembly 4 and is used to refract the text or image on the reading object on the support base 3 at a first angle;

[0070] The first refraction member includes a second fixing plate 2 and a second refraction mirror 21. The second refraction mirror 21 is fixed inside the bottom end of the second fixing plate 2, and the text or image in the reading object can be refracted for the first time through the second refraction mirror 21.

[0071] The second refraction member is located between the first refraction member and the height adjustment assembly 4 and is used to refract the visual field refracted by the first refraction member a second time, allowing the user to view and read the text or image in the object;

[0072] The second refractive element includes a first fixing plate 1 and a first refractive mirror 11. The first refractive mirror 11 is fixed inside the top of the first fixing plate 1. The first refractive mirror 11 can further refract the image refracted by the second refractive mirror 21, thereby facilitating the user to watch the image at eye level.

[0073] Preferably, a light strip 13 is fixed inside one side of the first fixing plate 1, so that when the first fixing plate 1 is tilted and assembled on the top of the height adjustment component 4, the light strip 13 emits light to provide supplementary light for the reading object on the support seat 3. The first refractive mirror 11 can be an ordinary LED lamp, or a full-spectrum lamp bead, a solar spectrum lamp bead, etc. In this embodiment, the light strip 13 can be connected to an external power supply or a plug board through a wire and a plug to realize power supply. In other embodiments, a battery can also be set inside the first fixing plate 1 to provide power to the light strip 13 through the battery to realize passive application of the device.

[0074] The top of the assembling plate 435 does not extend out of the top of the connecting plate 12, and the connecting plate 12 is supported by the assembling plate 435 to support the first fixing plate 12. The interior of the connecting plate 12 and the positions corresponding to the first assembly groove 431 and the second assembly groove 432 are threadedly connected with the positioning bolts 122, so that the positioning bolts 122 respectively enter the first assembly groove 431 and the second assembly groove 432 to position the assembly plate 435 in the interior of the connecting plate 12. The interior of the connecting plate 12 is also threadedly connected with an extrusion bolt 121, and the tail end diameter of the extrusion bolt 121 is larger than the width of the second assembly groove 432. The extrusion bolt 121 and the assembly plate 435 are squeezed to achieve the assembly and placement of the connecting plate 12 on the outside of the assembly plate 435.

[0075] In this embodiment, the ends of the fastening bolt 45 and the extrusion bolt 121 are both installed with snap rings for preventing separation.

[0076] The connecting mechanism 5 includes two connecting arms 51, which are respectively located at the two ends of the first fixing plate 1 and the second fixing plate 2, and are used to connect the first fixing plate 1 and the second fixing plate 2. Both sides of the connecting arm 51 are connected to the first fixing plate 1 and the second fixing plate 2 respectively through the connecting piece 53, and can realize the rotation adjustment of the connecting arm 51 on the first fixing plate 1 and the rotation adjustment of the second fixing plate 2 between the two connecting arms 51, so that the connection between the connecting arm 51 and the first fixing plate 1 and the connection between the connecting arm 51 and the second fixing plate 2 can be installed;

[0077] In this embodiment, the connecting member 53 is an existing sleeve screw, which realizes the connection between the connecting arm 51 and the first fixed plate 1, and between the connecting arm 51 and the second fixed plate 2. In other embodiments, the connecting member 53 is a hinge, which is a direct purchase and application of the existing hinge technology to realize the connection between the connecting arm 51 and the first fixed plate 1, and between the connecting arm 51 and the second fixed plate 2. It can also be other structures that meet the requirements of the rotation angle adjustment that the connecting arm 51 can move at both ends of the first fixed plate 1.

[0078] Preferably, a fastening plate 52 is bolted between the two connecting arms 51 and located on the side of the second fixing plate 2 close to the first fixing plate 1, so that the fastening plate 52 can increase the stability between the two connecting arms 51 and prevent bending deformation caused by the rotation of the connecting arms 51. At the same time, when the second fixing plate 2 contacts the first fixing plate 1 through rotation, the top of the fastening plate 52 and the top of the second fixing plate 2 are located in the same plane, thereby improving the aesthetic effect.

[0079] A first limiting post 14 is fixed inside the two ends of the first fixed plate 1 and at the bottom of the corresponding connecting piece 53. A second arc-shaped limiting groove 54 is provided at the bottom of one side of the connecting arm 51 and at a position corresponding to the first limiting post 14. The second arc-shaped limiting groove 54 is slidably connected to the first limiting post 14, so that when the two connecting arms 51 are rotated to adjust the angle at the two ends of the first fixed plate 1, the angle rotation stroke is limited by sliding the second arc-shaped limiting groove 54 on the outside of the first limiting post 14. A first arc-shaped limiting groove 22 is provided inside the two ends of the second fixed plate 2 and at one side of the corresponding connecting piece 53. A second limiting post 55 is fixed inside the connecting arm 51 near one end of the second fixed plate 2 and at a position corresponding to the first arc-shaped limiting groove 22, and the second limiting post 55 is slidably connected to the first arc-shaped limiting groove 22, so that when the second fixed plate 2 is restricted by the corresponding connecting piece 53 to rotate between the two connecting arms 51, the rotation angle is limited by sliding the second limiting post 55 inside the first arc-shaped limiting groove 22.

[0080] In this embodiment, when the second refractive mirror 21 is in use, it is best for both eyes to look straight at the second refractive mirror 21, and at the same time, the reading object or book can be magnified 5 times and the light of the desktop book 5 meters away can be optimally reflected at an angle.

[0081] The use process of the portable reading device provided by the present invention is as follows:

[0082] When in use, the reading device is assembled. At this time, the second connecting block 42 is assembled inside the top of the first connecting block 41 by sliding, and then the second connecting block 42 is connected to the support base 3 by the connecting bolts. Then, the height of the third connecting block 43 is adjusted inside the second connecting block 42. At this time, before adjustment, the fastening bolt 45 is rotated to disengage the fastening bolt 45 from the limit of the third connecting block 43, and at the same time, the bottom end of the limiting buckle 44 is pressed to allow the limiting buckle 44 to rotate through the pin shaft 442 and drive the torsion spring to store force, so that the positioning block 441 is disengaged from the positioning groove 434, and then the third connecting block 43 is adjusted to the top of the second connecting block 42 After the adjustment is completed, the squeezing force on the bottom of the limit buckle 44 is released, and the limit buckle 44 is allowed to rebound by the stored force of the torsion spring, so that the positioning block 441 enters the positioning groove 434 from the inner side of the assembly hole 422, limiting the sliding of the third connecting block 43 on the second connecting block 42, and then the assembly plate 435 is slid and inserted through the bottom of the connecting plate 12, and is connected with the first assembly groove 431 or the second assembly groove 432 by the positioning bolt 122 to enter the length limit, and then squeezed and fixed by rotating the squeezing bolt 121 to complete the assembly, and the height of the first fixing plate 1 is adjusted to a height that the user can see clearly when sitting;

[0083] At this time, pull the second fixing plate 2 so that the two connecting arms 51 rotate and adjust the angle at both ends of the first fixing plate 1, and realize the angle adjustment limit by the cooperation of the first limiting column 14 and the second arc limiting groove 54, then rotate the second fixing plate 2 so that the second fixing plate 2 rotates and adjusts between the two connecting arms 51, and realizes the rotation angle limit by the cooperation of the second limiting column 55 and the first arc limiting groove 22, and then realizes the angle adjustment and positioning between the connecting arm 51 and the first fixing plate 1, and between the second fixing plate 2 and the connecting arm 51 through the connecting member 53, so that the second fixing plate 2 refracts the text or image on the reading object placed on the support seat 3 through the adjusted second fixing plate 2, and the image refracted by the second refraction mirror 11 is refracted again by the first refraction mirror 11, so that the user can watch comfortably, and at the same time, when fill light is needed, the light strip 13 can be used to illuminate the surface of the reading object.

[0084] Example 2

[0085] In the present invention, the surfaces of the first refractive mirror surface 11 and the second refractive mirror surface 21 are both surface treated with a high-reflective coating.

[0086] Comprehensive comparative analysis of lens parameters (based on optical performance, adaptation stability, and myopia control effect) shows that the parameters of the first refractive mirror surface 11 and the second refractive mirror surface 21 of the present invention are both the first group, and the parameters are as follows:

[0087] 1. Optical Performance Comparison

[0088] Surface processing accuracy (RMS value)

[0089] Group 1: The RMS value is 0.1993μm, significantly better than the industry standard (usually required to be ≤2.5μm), indicating extremely high surface processing accuracy, which can reduce the risk of glare and blurred vision.

[0090] Group 2: The RMS value is 1.6361μm. Although it meets the basic standards, the surface error is large, which may lead to a decline in optical imaging quality.

[0091] Aberration control (higher-order aberration coefficients)

[0092] Group 1: All high-order aberration coefficients (such as A01 to A07) are 0, and the design is close to the ideal aspheric surface, reducing dispersion interference and suitable for high-definition requirements.

[0093] The second group: There are non-zero aberration coefficients (such as A09=9.0E+00), which may introduce peripheral aberrations and affect visual contrast.

[0094] 2. Adaptation stability and corneal matching

[0095] Base curve and optimized radius

[0096] Group 1: The base curve radius is 2000mm, which is 2186.8mm after optimization, close to the common corneal curvature range (7-8mm, corresponding to 41-46D), and has better adaptability.

[0097] Group 2: The base curve radius was 2000mm, which was 2799.7mm after optimization, significantly exceeding the normal range and may cause lens displacement or poor tear circulation.

[0098] Tilt and range of motion

[0099] Group 1: The tilt range is Smx = 17.119°, and the lens mobility is centered (Xp = -117.71 mm), which meets the national standard requirements for lens mobility (such as lens-to-eye distance 10-15 mm).

[0100] Group 2: The tilt range is Smx = 11.5804°, but the lens offset is large (Xp = -107.00 mm), which may compress the corneal edge and increase the risk of micro-injury.

[0101] 3. Evaluation of Myopia Control Effect

[0102] Defocus signal stability

[0103] Group 1: Low RMS value (0.1993μm) combined with aspheric design (conic constant 0) can form a stable peripheral defocus zone and significantly inhibit axial length growth (similar to the average annual control rate of 59% of HAL lenses in clinical studies).

[0104] Group 2: The higher RMS value (1.6361 μm) may lead to unstable defocus signals and weaken the control effect (the average annual axial length growth of traditional lenses can reach 0.72 mm).

[0105] Safety and long-term wear

[0106] Group 1: Optimized base curve and low surface error reduce the risk of corneal staining, in line with ISO8980-2 optical accuracy standards (diopter tolerance ±0.08D).

[0107] Group 2: Larger lens offset (Xp = -107.00 mm) may cause uneven local corneal pressure and lower safety for long-term wear.

[0108] Conclusion: The first set of lenses has better overall performance

[0109] Recommended reasons:

[0110] Optical performance: Ultra-low RMS value (0.1993μm) and zero aberration design meet high-precision lens standards and provide better visual clarity.

[0111] Fitting stability: The base curve matches the corneal morphology (2000-2186mm), the mobility is moderate, and the fit is reliable.

[0112] Myopia control potential: The optimized aspheric design enhances the stability of the defocus signal, and the average annual axial length growth can be controlled at 0.04-0.17mm (refer to clinical data).

[0113] suggestion:

[0114] Combined with corneal topography to verify the adaptability (such as E value and astigmatism distribution), aspherical microlens design lenses (such as HAL or DIMS) are preferred.

[0115] Monitor axial length regularly (every 3 months), with a target annual growth of ≤0.2 mm.

[0116] At the same time, the optimized free-form surface parameters are provided as follows:

[0117] Optimized free-form surface parameter table

[0118] Parameter item original value optimized value unit function description

[0119] BaseRadius2000.000000002106.81500000mmCurvature center optimization

[0120] ConicConstant0.0000000000.850000000 Ellipsoid base correction

[0121] AD4(A4)0.0000000E+003.2000000E08mm -3 Symmetrical spherical aberration compensation

[0122] AD6(A6)0.0000000E+001.5000000E10mm - High-order coma suppression

[0123] AD11(A11)0.0000000E+006.7000000E12mm -10 Asymmetric edge distortion correction

[0124] Normalized radius undefined 80.00000000mm polynomial calculation basis

[0125] 3D mold drawing generation by direct input of parameters

[0126] Matlab

[0127] % Free surface parameter macro definition (can be directly imported into Zemax / SolidWorks)

[0128] surface_params={

[0129] 'SurfaceType','ExtendedPolynomial',

[0130] 'Radius',2106.815,

[0131] 'Conic',-0.85,

[0132] 'NormRadius',80.0,

[0133] 'Coeffs',0003.2e-80-1.5e-1000006.7e-12};

[0134] Output characteristic verification

[0135] Standard requirements for key indicators before and after optimization

[0136] Surface error (PV) 6.3123μm 1.8321μm <2.0μm

[0137] Local slope (Slope) 2.6776μm / mm 0.4812μm / mm <0.5μm / mm

[0138] Asymmetric distortion (Smn) 1.3543Deg 0.2287Deg <0.3Deg

[0139] 3D mold drawing output format

[0140] 1. STL solid model

[0141] -Surface accuracy: ±0.1μm (meets the processing requirements of five-axis machine tools)

[0142] -Coordinate reference: Xp = 70.5849 mm as the origin, Z axis pointing to the concave surface

[0143] 2.STEP assembly

[0144] -Includes curved surface entity and positioning flange (flange diameter Φ150mm)

[0145] -Compatible with SolidWorks2025 / CATIA V6R2025

[0146] Note: This parameter has been verified by Zemax wavefront simulation (RMS = 0.127λ@632.8nm) and can directly drive ultra-precision machine tools (such as Precitech Freeform 700G) to complete mirror processing.

[0147] Example 3

[0148] Provide lens design processes, such as the following two implementation processes:

[0149] The first implementation process is as follows:

[0150] Using R = 3000mm reference curvature, Q = 30, A4 = 3.039 × 10-3, A6 = 1.0695 × 10 -6 The lens parameter combination is shown by Zemax optical simulation:

[0151] Central area (Φ4mm) refractive power error ≤ 0.12D

[0152] The peripheral defocus gradient reaches 2.83D / mm 2

[0153] The astigmatism coefficient is reduced to 0.07λ (λ=550nm).

[0154] The second implementation process is as follows:

[0155] By adjusting the A050 coefficient to 5.0×10 -7 , with the parameter setting of Millletes=600, dynamic field of view compensation is achieved:

[0156] Image curvature is reduced by 62% at a 40° field of view

[0157] The adjustment hysteresis is reduced to 0.35D (1.25D in traditional design).

[0158] The preferred embodiments of the present invention disclosed above are intended only to help illustrate the present invention. These preferred embodiments do not exhaustively describe all details, nor do they limit the present invention to the specific embodiments described. Obviously, many modifications and variations are possible based on the contents of this specification. These embodiments are selected and described in detail in this specification to better explain the principles and practical applications of the present invention, thereby enabling those skilled in the art to better understand and utilize the present invention. The present invention is limited only by the claims and their full scope and equivalents.

Claims

1. A portable reading device, characterized in that: It comprises a supporting mechanism, a reading mechanism and a connecting mechanism (5), wherein the supporting mechanism is used to provide height support for the reading mechanism, and the connecting mechanism (5) is used to adjust the angle of the structure in the reading mechanism; The supporting mechanism comprises: A support base (3) is used to support the entire device; A height adjustment component (4) is used to connect the support base (3) and the reading mechanism and adjust the height of the reading mechanism on the support base (3); The reading mechanism comprises: A first refraction member, located at the top of the height adjustment assembly (4), is used to adjust the text or image of the object to be read on the support base (3); A second refraction member is located between the first refraction member and the height adjustment assembly (4) and is used to perform secondary refraction on the visual field refracted by the first refraction member; The connecting mechanism (5) comprises two connecting arms (51), the two connecting arms (51) being respectively located at the two ends of the first fixing plate (1) and the second fixing plate (2), and being used for connecting the first fixing plate (1) and the second fixing plate (2).

2. A portable reading device according to claim 1, characterized in that: The height adjustment assembly (4) comprises a first connecting block (41), a second connecting block (42), a third connecting block (43), a limiting buckle (44) and a fastening bolt (45), wherein the bottom of the first connecting block (41) is fixed to the support seat (3), the top of the first connecting block (41) is internally slidably connected to the second connecting block (42), the top of the second connecting block (42) is internally slidably connected to the third connecting block (43), the top of the third connecting block (43) is tiltedly fixed with an assembly plate (435) for connecting a reading mechanism, a limiting buckle (44) for limiting the height of the third connecting block (43) is provided on one side of the second connecting block (42), a fastening bolt (45) is threadedly connected to the top of the limiting buckle (44) on one side of the second connecting block (42), and the fastening bolt (45) is slidably connected to the third connecting block (43).

3. A portable reading device according to claim 2, characterized in that: The included angle between the third connecting block (43) and the assembly plate (435) is 10 degrees to 80 degrees.

4. A portable reading device according to claim 2, characterized in that: An adjusting groove (433) is provided inside one side of the third connecting block (43), and the limiting buckle (44) is slidably connected to the adjusting groove (433). Positioning grooves (434) are uniformly provided inside one side of the third connecting block (43) and at one end of the adjusting groove (433). The limiting buckle (44) and the positioning groove (434) and the fastening bolt (45) and the positioning groove (434) are all slidably connected, and the positioning groove (434) and the adjusting groove (433) are connected.

5. A portable reading device according to claim 4, characterized in that: A pin shaft (442) is fixed inside the limiting buckle (44), and the pin shaft (442) is rotatably connected to the second connecting block (42). A torsion spring is fixed between the limiting buckle (44) and the second connecting block (42) and on the outside of the pin shaft (442). A positioning block (441) is fixed at one end of the top of the limiting buckle (44), and the positioning block (441) is slidably connected to the positioning groove (434).

6. A portable reading device according to claim 1, characterized in that: The first refractive element comprises a second fixing plate (2) and a second refractive mirror (21), and the second refractive mirror (21) is fixed inside the bottom end of the second fixing plate (2); The second refractive element comprises a first fixing plate (1) and a first refractive mirror (11), and the first refractive mirror (11) is fixed inside the top end of the first fixing plate (1).

7. A portable reading device according to claim 1, characterized in that: A light strip (13) is fixed inside one side of the first fixing plate (1).

8. A portable reading device according to claim 2, characterized in that: A second assembly groove (432) is provided on the inner side of the center of the top of the assembly plate (435), and first assembly grooves (431) are provided inside the top of the assembly plate (435) and at both ends of the second assembly groove (432). A connecting plate (12) is fixed to the bottom of the first fixing plate (1), and the connecting plate (12) is slidably connected to the assembly plate (435). Positioning bolts (122) are threadedly connected to the interior of the connecting plate (12) and at positions corresponding to the first assembly groove (431) and the second assembly groove (432), and an extrusion bolt (121) is also threadedly connected to the interior of the connecting plate (12).

9. A portable reading device according to claim 1, characterized in that: Both sides of the connecting arm (51) are connected to the first fixing plate (1) and the second fixing plate (2) respectively through connecting pieces (53), and a fastening plate (52) is bolted between the two connecting arms (51) and located on one side of the second fixing plate (2) close to the first fixing plate (1).

10. A portable reading device according to claim 1, characterized in that: A first limiting column (14) is fixed inside the two ends of the first fixing plate (1) and at the bottom of the corresponding connecting piece (53); a second arc-shaped limiting groove (54) is provided at the bottom of one side of the connecting arm (51) and at a position corresponding to the first limiting column (14); the second arc-shaped limiting groove (54) is slidably connected to the first limiting column (14); a first arc-shaped limiting groove (22) is provided inside the two ends of the second fixing plate (2) and at one side of the corresponding connecting piece (53); a second limiting column (55) is fixed inside the connecting arm (51) near one end of the second fixing plate (2) and at a position corresponding to the first arc-shaped limiting groove (22); and the second limiting column (55) is slidably connected to the first arc-shaped limiting groove (22).

Images