Handheld digital magnifier with adjustable focal length

Abstract

The utility model discloses a handheld digital magnifier with adjustable focal length, which is characterized in that a rotatable adjusting bracket is fixedly matched with an outer roller, and the adjusting bracket is rotated to enable a lens frame in an inner roller to slide along a threaded chute of the outer roller, so that the focal length of a lens is adjusted, and the axial distance between the lens and a CMOS (complementary metal oxide semiconductor) chip is controlled; the product is simple in structure, the axial position of the lens is accurately adjusted through a physical structure, full-focal-length clear imaging is achieved, zooming-in and zooming-out can be carried out while the definition of an image is kept, and therefore the user experience is improved, and the application scene is expanded.

Description

Technical Field

[0001] This utility model relates to the field of electronic magnifying glass technology, and in particular to a handheld digital magnifying glass with adjustable focus. Background Technology

[0002] Handheld magnifying glasses, as a basic optical tool, are widely used in reading, precision observation, science education, and entertainment. Traditional optical magnifying glasses typically consist of a single convex lens, a supporting frame, and a handle. Their principle is to form a magnified virtual image by refracting light through the lens. However, these products are limited by their fixed focal length design, achieving clear imaging only within a specific object distance range, and suffer from problems such as edge distortion and significant aberrations. With the development of electronic technology, some handheld electronic magnifying glasses have gradually entered the market. These use cameras to capture images and display magnified images on a screen. While this improves the imaging defects of optical lenses to some extent, most products still use fixed lens structures or digital zoom solutions, lacking physical focal length adjustment functionality. This makes it difficult to balance clarity and flexibility when observing details at close range or capturing overall images at a distance.

[0003] The core problem with existing handheld magnifying glasses is that they cannot achieve dynamic adjustment of the physical focal length. The fixed focal length of optical magnifying glasses requires frequent repositioning of the device when observing objects at different distances, which is cumbersome and prone to blurring due to object distance deviation. While electronic magnifying glasses rely on digital zoom solutions to magnify and stretch the image, they sacrifice image resolution and are not designed to adjust the focal length to make the image clear. Prolonged use can also easily cause visual fatigue. Therefore, there is an urgent need for a more reasonable handheld magnifying glass to solve the aforementioned technical problems. Utility Model Content

[0004] In view of the shortcomings of the above-mentioned technologies, such as the inability of handheld electronic magnifying glasses to achieve clear focusing and imaging, this utility model provides a handheld digital magnifying glass with adjustable focus.

[0005] To achieve the above objectives, this utility model provides a handheld digital magnifying glass with adjustable focus, comprising:

[0006] A housing with an internal accommodating space, a main control board and a display screen and a CMOS chip electrically connected to the main control board are provided inside the housing, and the display screen is disposed on the first surface of the housing;

[0007] The lens is disposed within the housing and extends out of the second surface of the housing;

[0008] A focusing assembly is movably housed within the housing. The CMOS chip is fixedly connected to the focusing assembly, and the lens is slidably connected to the focusing assembly. The axial distance between the lens and the CMOS chip is adjusted via the focusing assembly.

[0009] As an improvement of this utility model, the focusing assembly includes an adjusting bracket, an inner roller, and an outer roller. The adjusting bracket is rotatably sleeved on the housing and fixedly connected to the outer roller. The inner roller is fixedly disposed on the inner wall of the housing, and the CMOS chip is fixedly disposed on one end of the inner roller near the second surface of the housing. The outer roller is rotatably sleeved on the outside of the inner roller, and the lens is slidably disposed in the inner roller and slidably connected to the outer roller. The rotation of the adjusting bracket drives the outer roller to rotate, thereby moving the lens away from or closer to the CMOS chip.

[0010] As an improvement of this utility model, a lens holder is also fitted around the lens. The inner roller has a sliding through hole on its wall surface, and the outer roller has a threaded groove on its inner wall surface. The lens holder has a sliding protrusion on its wall surface that engages with the threaded groove and the sliding through hole. The sliding through hole restricts the rotation of the lens holder, and the outer roller rotates to change the position of the sliding protrusion through the threaded groove, thereby adjusting the axial position of the lens.

[0011] As an improvement of this utility model, the outer wall surface of the outer roller is formed with an insertion groove, and the inner wall surface of the adjusting bracket is provided with an insertion block. The insertion block and the insertion groove are fitted together to fix the adjusting bracket to the outer roller.

[0012] As an improvement of this utility model, the adjusting bracket is provided with an adjusting block.

[0013] As an improvement of this utility model, a limiting groove is formed inside the housing, and the adjusting block is disposed in the limiting groove.

[0014] As an improvement of this utility model, the housing is provided with control buttons, which are electrically connected to the main control board.

[0015] As an improvement of this utility model, the shell is also fitted with a decorative piece designed with animal ears as the theme, and the number of the decorative piece can be one or two.

[0016] As an improvement of this utility model, a light shield is also provided on the housing.

[0017] As an improvement of this utility model, a battery is provided inside the housing, and a charging port is provided on the side of the housing. The charging port and the battery are electrically connected to the main control board.

[0018] The beneficial effects of this utility model are as follows: Compared with the prior art, this utility model provides an adjustable focal length handheld digital magnifier, comprising a housing, a lens, and a focusing assembly. The housing has an internal accommodating space, and inside the housing are a main control board and a display screen and a CMOS chip electrically connected to the main control board. The display screen is located on the first surface of the housing. The lens is located inside the housing and protrudes from the second surface of the housing. The focusing assembly is movably accommodated inside the housing, the CMOS chip is fixedly connected to the focusing assembly, and the lens is slidably connected to the focusing assembly. The axial distance between the lens and the CMOS chip is adjusted through the focusing assembly. This utility model uses a rotatable adjusting bracket fixedly engaged with an outer roller. Rotating the adjusting bracket causes the lens holder in the inner roller to slide along the threaded groove of the outer roller, thereby achieving focal length adjustment of the lens and controlling the axial distance between the lens and the CMOS chip. This product has a simple structure and precisely adjusts the axial position of the lens through a physical structure, achieving clear imaging across the entire focal length. While maintaining image clarity, it can also magnify and reduce, thereby improving user experience and expanding application scenarios. Attached Figure Description

[0019] Figure 1 This is the first perspective view of the present invention;

[0020] Figure 2 This is a second perspective view of the present invention;

[0021] Figure 3 This is the first exploded view of this utility model;

[0022] Figure 4 This is the second exploded view of the present invention;

[0023] Figure 5 This is a first exploded view of the focusing assembly of this utility model;

[0024] Figure 6 This is a second exploded view of the focusing assembly of this utility model.

[0025] The symbols for the main components are explained below:

[0026] 1. Housing; 11. Limiting groove; 12. Decorative parts;

[0027] 2. Focusing assembly; 21. Adjusting bracket; 211. Insertion block; 212. Adjusting block; 22. Inner roller; 221. Sliding through hole; 23. Outer roller; 231. Threaded groove; 232. Insertion groove;

[0028] 3. Lens; 31. Lens mount; 311. Sliding protrusion;

[0029] 4. Control buttons;

[0030] 5. Sunshade;

[0031] 6. Charging port;

[0032] 7. Display screen;

[0033] 8. Battery;

[0034] 9. Main control board;

[0035] 10. CMOS chip. Detailed Implementation

[0036] To more clearly illustrate this utility model, the following description, in conjunction with the accompanying drawings, will provide a further picture.

[0037] In the following description, specific examples are given to provide a more in-depth understanding of the present invention. It is obvious that the described embodiments are only a part of the embodiments of the present invention, and not all of them. It should be understood that the specific embodiments described are only used to explain the present invention and are not intended to limit the present invention.

[0038] It should be understood that when the terms “comprising” and / or “including” are used in this specification, they indicate the presence of the said feature, integral, step, operation, element, or component, but do not exclude the presence or addition of one or more other features, integrals, steps, operations, elements, components, or combinations thereof.

[0039] Please see Figures 1-6 This utility model discloses a handheld digital magnifying glass with adjustable focus, comprising:

[0040] The device comprises a housing 1, a lens 3, and a focusing assembly 2. The housing 1 has an internal accommodating space, and houses a main control board 9, a display screen 7 electrically connected to the main control board 9, and a CMOS chip 10. The display screen 7 is located on the first surface of the housing 1. The lens 3 is located inside the housing 1 and extends out onto the second surface of the housing 1. The focusing assembly 2 is movably housed within the housing 1. The CMOS chip 10 is fixedly connected to the focusing assembly 2, while the lens 3 is slidably connected to the focusing assembly 2. The axial distance between the lens 3 and the CMOS chip 10 is adjusted via the focusing assembly 2. This invention controls the axial distance between the lens 3 and the CMOS chip 10 through the focusing assembly 2. The sliding contact between the lens 3 and the focusing assembly 2 allows the lens 3 to move closer to or further away from the CMOS chip 10, thereby achieving focal length adjustment. Focal length adjustment via the focusing assembly 2 ensures a clear electronic image of the CMOS chip 10 on the display screen 7, maintaining image clarity while allowing for magnification and reduction. This product has a simple structure, supporting manual focusing through the cooperation of simple mechanical structures.

[0041] In this embodiment, the focusing assembly 2 includes an adjusting bracket 21, an inner roller 22, and an outer roller 23. The adjusting bracket 21 is rotatably sleeved on the housing 1 and fixedly connected to the outer roller 23. The inner roller 22 is fixedly disposed on the inner wall surface of the housing 1, and the CMOS chip 10 is fixedly disposed at one end of the inner roller 22 near the second surface of the housing 1. The outer roller 23 is rotatably sleeved on the outside of the inner roller 22, and the lens 3 is slidably disposed in the inner roller 22 and slidably connected to the outer roller 23. The rotation of the adjusting bracket 21 drives the outer roller 23 to rotate, thereby driving the lens 3. The lens 3 is slidably disposed in the inner roller 22, and the outer roller 23 can rotate relative to the inner roller 22 and slides with the lens 3. Therefore, when the adjusting bracket 21 drives the outer roller 23 to rotate, the lens holder 31 that slides with the outer roller 23 is driven, thereby changing the axial position of the lens 3. Since the CMOS chip 10 is fixedly disposed in the inner roller 22, the function of adjusting the focal length can be realized by changing the axial distance between the lens 3 and the CMOS chip 10 to be longer or shorter.

[0042] In this embodiment, a lens holder 31 is also fitted over the lens 3. The inner roller 22 has a sliding through hole 221 on its wall surface, and the outer roller 23 has a threaded groove 231 on its inner wall surface. The lens holder 31 has a sliding protrusion 311 on its wall surface that engages with the threaded groove 231 and the sliding through hole 221. The sliding through hole 221 restricts the rotation of the lens holder 31. The outer roller 23 rotates to change the position of the sliding protrusion 311 through the threaded groove 231, thereby adjusting the axial position of the lens 3. The sliding protrusion 311 on the lens holder 31 slides in the threaded groove 231, and when the adjusting bracket 21 controls… When the outer roller 23 rotates, the sliding protrusion 311 slides along the path of the threaded groove 231 and the sliding through hole 221. Since the inner roller 22 is fixedly connected to the wall of the housing 1, it cannot rotate. Therefore, the sliding through hole 221 mainly restricts the rotation of the lens holder 31. Then, it moves back and forth along the path of the threaded groove 231 to realize the axial distance adjustment of the lens holder 31, thereby causing the axial position of the lens 3 to change as well. Therefore, the back and forth rotation of the adjustment bracket 21 can control the lens 3 to move closer to or further away from the CMOS chip 10 to meet the user's need to use different focal lengths.

[0043] In this embodiment, the outer wall surface of the outer roller 23 is formed with a insertion groove 232, and the inner wall surface of the adjusting bracket 21 is provided with an insertion block 211. The insertion block 211 and the insertion groove 232 are fitted together to fix the adjusting bracket 21 to the outer roller 23. The adjusting bracket 21 is fixedly connected to the outer roller 23 by the fitting of the insertion block 211 and the insertion groove 232. When the adjusting bracket 21 rotates, the outer roller 23 is driven to rotate by the cooperation of the insertion block 211 and the insertion groove 232.

[0044] In this embodiment, the housing 1 is provided with a control button 4, which is electrically connected to the main control board 9. The control button 4 is used to start and adjust the switching of the focusing component 2 and the display screen 7, as well as the magnification of the focusing component 2.

[0045] In this embodiment, the adjusting bracket 21 is provided with an adjusting block 212. The adjusting block 212 makes it easier for the user to rotate the adjusting bracket 21, improving the practicality of the product. Furthermore, a limiting groove 11 is formed on the housing 1, and the adjusting block 212 is disposed in the limiting groove 11. By setting the limiting groove 11, the movement of the adjusting block 212 is restricted, so as to prevent the rotation amplitude of the adjusting bracket 21 from exceeding the stroke length of the threaded slide groove 231.

[0046] In this embodiment, the shell 1 is also fitted with a decorative piece 12 designed with animal ears as the theme. The number of decorative pieces can be one or two. The decorative piece 12 is used to increase the overall fun of the product and make the product more beautiful and cute.

[0047] In this embodiment, a light shield 5 is also provided on the housing 1. By providing a light shield 5 on the observation surface of the housing 1, a better viewing angle and brightness are provided for the lens 3 and the CMOS chip 10, and the focusing component 2 is prevented from being blurred and overexposed in the display screen 7 due to excessive light reflection.

[0048] In this embodiment, a battery 8 is provided inside the housing 1, and a charging port 6 is provided on the side of the housing 1. The charging port 6 and the battery 8 are electrically connected to the main control board 9. The battery 8 provides power input to the main control board 9, the focusing assembly 2 and the display screen 7 to ensure normal operation. The battery 8 is charged through the charging port 6 to ensure subsequent use.

[0049] The working principle of this utility model is as follows:

[0050] In use, the adjusting block on the sliding housing causes the adjusting bracket to rotate the outer cylinder. When the outer cylinder rotates, sliding protrusions are provided at both ends of the lens holder. These sliding protrusions are sequentially located in the sliding through hole of the inner cylinder and the threaded groove on the inner wall of the outer cylinder. The inner cylinder and the outer cylinder are rotatably connected. Therefore, when the sliding protrusions rotate, they will slide in the threaded groove and the sliding through hole, thereby changing the axial position of the lens and the lens holder, and realizing the adjustment of the lens focal length of the physical structure.

[0051] The advantages of this utility model are:

[0052] 1) This utility model achieves focal length adjustment of the lens by cooperating with the focusing component and the lens holder. The adjusting bracket rotates the outer roller to make the lens holder move axially in the outer roller, thereby adjusting the axial distance between the lens and the CMOS chip.

[0053] 2) The shell is also fitted with decorative parts designed with animal ears as the theme, which enhances the overall aesthetics and fun of the product.

[0054] The above-disclosed embodiments are only a few specific examples of this utility model. However, this utility model is not limited thereto. Any variations that can be conceived by those skilled in the art should fall within the protection scope of this utility model.

Claims

1. A handheld digital magnifying glass with adjustable focus, characterized in that, include: A housing with an internal accommodating space, a main control board and a display screen and a CMOS chip electrically connected to the main control board are provided inside the housing, and the display screen is disposed on the first surface of the housing; The lens is disposed within the housing and extends out of the second surface of the housing; A focusing assembly is movably housed within the housing. The CMOS chip is fixedly connected to the focusing assembly, and the lens is slidably connected to the focusing assembly. The axial distance between the lens and the CMOS chip is adjusted via the focusing assembly.

2. The handheld digital magnifying glass with adjustable focus according to claim 1, characterized in that, The focusing assembly includes an adjusting bracket, an inner roller, and an outer roller. The adjusting bracket is rotatably fitted onto the housing and fixedly connected to the outer roller. The inner roller is fixedly disposed on the inner wall of the housing, and the CMOS chip is fixedly disposed at one end of the inner roller near the second surface of the housing. The outer roller is rotatably fitted onto the outer roller, and the lens is slidably disposed in the inner roller and slidably connected to the outer roller. The rotation of the adjusting bracket drives the outer roller to rotate, thereby moving the lens away from or towards the CMOS chip.

3. The handheld digital magnifying glass with adjustable focus according to claim 2, characterized in that, A lens holder is also fitted around the lens. The inner roller has a sliding through hole on its wall surface, and the outer roller has a threaded groove on its inner wall surface. The lens holder has a sliding protrusion on its wall surface that engages with the threaded groove and the sliding through hole. The sliding through hole restricts the rotation of the lens holder. The outer roller rotates to change the position of the sliding protrusion through the threaded groove, thereby adjusting the axial position of the lens.

4. The adjustable-focus handheld digital magnifying glass according to claim 2, characterized in that, The outer wall surface of the outer roller is formed with an insertion groove, and the inner wall surface of the adjusting bracket is provided with an insertion block. The insertion block and the insertion groove are fitted together to fix the adjusting bracket to the outer roller.

5. A handheld digital magnifying glass with adjustable focus according to claim 1, characterized in that, The housing is equipped with control buttons, which are electrically connected to the main control board.

6. A handheld digital magnifying glass with adjustable focus according to claim 4, characterized in that, The adjusting bracket is equipped with an adjusting block.

7. A handheld digital magnifying glass with adjustable focus according to claim 6, characterized in that, A limiting groove is formed inside the housing, and the adjusting block is disposed in the limiting groove.

8. A handheld digital magnifying glass with adjustable focus according to claim 1, characterized in that, The shell is also fitted with decorative pieces designed with animal ears as the theme, and the number of decorative pieces can be one or two.

9. A handheld digital magnifying glass with adjustable focus according to claim 1, characterized in that, The housing is also fitted with a light shield.

10. A handheld digital magnifying glass with adjustable focus according to claim 1, characterized in that, The housing contains a battery, and the side of the housing has a charging port. The charging port and the battery are electrically connected to the main control board.

Images