Optical magnification device with replaceable lens group

Abstract

An optical amplification device with a replaceable lens group comprises a supporting unit, a lens bracket unit and a lens group unit. The glasses frame unit is arranged on the supporting unit and comprises two supporting arms and a mounting arm which extends in the left-right direction and is connected with the supporting arms. And the lens group unit comprises an objective lens group arranged on the support arm and an eyepiece group which can be mounted on the mounting arm in a replaceable manner and is opposite to the objective lens group at an interval in the front-back direction. The eyepiece group is provided with a first positioning piece which is detachably connected to the mounting arm; the lens group unit is used for constructing an image of an amplified object, and the image is reflected to an optical path of eyes of a user by the eyepiece group. According to the utility model, the eyepiece group can be replaced according to the use situation, and the use is convenient.

Description

Technical Field

[0001] This utility model relates to an optical device, and more particularly to an optical magnification device with interchangeable lens groups. Background Technology

[0002] The forced anti-myopia reading zoom lens disclosed in Chinese Utility Model Patent Publication No. CN218099783U includes an adjustment mechanism standing upright on the ground, an eyepiece mounted on the top side of the adjustment mechanism and located above the desk, and an objective lens spaced opposite to the eyepiece. The adjustment mechanism has a support arm, a mounting bracket pivotally connected to the upper end of the support arm for mounting the eyepiece, and two connecting shafts pivotally mounted at opposite ends of the mounting bracket for mounting the objective lens. The objective lens and the eyepiece are rotatably connected to each other via the connecting shafts. When a user places a book on the desk, the contents of the book are reflected into the user's eyes through the optical reflection principle of the objective lens and the eyepiece.

[0003] Although using the aforementioned telescope to read can increase the reading distance and ensure a proper reading posture, the size and curvature of the eyepiece and objective lens are fixed, and it is only suitable for reading books on a desk, limiting its applicability and making it inconvenient to use. Utility Model Content

[0004] The purpose of this invention is to provide an optical magnification device that is easy to use and allows for the replacement of lens groups.

[0005] This invention relates to an optical magnification device with interchangeable lens groups, suitable for reflecting magnified images of objects to the user's eyes. The optical magnification device with interchangeable lens groups includes a support unit, a frame unit, and a lens group unit.

[0006] The frame unit is disposed on the support unit and includes two arms spaced apart in the left-right direction, and a mounting arm extending along the left-right direction and connecting to the arms. The lens assembly unit is disposed on the frame unit and includes an objective lens assembly disposed on the arms, and an eyepiece assembly replaceably mounted on the mounting arm and spaced apart from the objective lens assembly in the front-back direction. The eyepiece assembly has a first positioning element detachably connected to the mounting arm. The lens assembly unit is used to construct an optical path that magnifies the image of the object and is reflected by the eyepiece assembly to the user's eye.

[0007] The present invention provides an optical magnification device with replaceable lens groups, wherein the eyepiece group has a first eyepiece group and at least one second eyepiece group, the curvature and / or size of the first eyepiece group is different from that of the second eyepiece group, and one of the first eyepiece group and the second eyepiece group is selectively mounted on the mounting arm.

[0008] The present invention relates to an optical magnification device with replaceable lens assembly, wherein the mounting arm has at least one magnetic suction element, the eyepiece assembly has an eyepiece base and a magnifying mirror mounted on the eyepiece base and facing the objective lens assembly, and the first positioning element is a magnetic element and is fixed to the eyepiece base and used to magnetically attract with the magnetic suction element.

[0009] The present invention relates to an optical magnification device with replaceable lens assembly, wherein the eyepiece assembly has an eyepiece base and a magnifying lens mounted on the eyepiece base and facing the objective lens assembly. The eyepiece base has a base for the magnifying lens and a first positioning member to be disposed thereon, and a second positioning member extending outward from the base and detachably snapped onto the mounting arm.

[0010] The present invention relates to an optical magnification device with replaceable lens assembly. The mounting arm of the lens frame unit has an arm portion and two magnetic suction members fixed at intervals on the arm portion. The first positioning member has two magnets for magnetically attracting the magnetic suction members.

[0011] The present invention relates to an optical magnification device with replaceable lens assembly, wherein the arm of the mounting arm has a forward-protruding protrusion, and the second positioning member has two spaced-apart inserts in the left-right direction, wherein the inserts define a clearance groove for the protrusion to engage, and the inserts are snapped onto the front side of the mounting arm.

[0012] The optical magnification device with replaceable lens assembly of this utility model also includes a counterweight unit. The counterweight unit includes a top support member disposed on the top side of the support unit in a vertical direction. The top support member extends upward and backward from the front side of the support unit.

[0013] The optical magnification device of this utility model with replaceable lens group includes a counterweight unit that further includes a rear counterweight and two side counterweights. The rear counterweight is arranged on the rear side of the support unit along the front-back direction, and the side counterweights are respectively arranged on the left and right sides of the support unit.

[0014] The optical magnification device of this utility model with replaceable lens group includes an adjustment group installed on the support unit and the top load-bearing member. The adjustment group has an adjustment member that can move back and forth. The adjustment member can move along the back and forth direction and push against the top load-bearing member.

[0015] The present invention relates to an optical magnification device with replaceable lens assembly, wherein the support unit includes a head frame for wearing on the user's head, the head frame having a front frame strip for abutting against the user's forehead, and two side frame strips spaced apart from the front frame strip.

[0016] The optical magnification device of the present invention, which allows for interchangeable lens groups, further includes a shoulder frame connecting at least one of the head frame and the eyeglass frame unit, the shoulder frame having two shoulder arms for abutting against the user's shoulders.

[0017] The present invention relates to an optical magnification device with replaceable lens assembly, wherein the support unit includes a stand, the stand having a frame that connects to the lens frame unit, and the frame being located in front of the user's eyes.

[0018] The beneficial effects of this utility model are as follows: The optical magnification device with replaceable eyepieces can change the eyepiece group according to the usage scenario, such as reading at a desk, watching a laptop, playing the piano, watching a large screen in class, reading while lying down, watching a mobile phone while sitting, or inspecting a workpiece. The user only needs to select a suitable eyepiece group and install it on the mounting arm, and use the first positioning member to connect it to the mounting arm to achieve the installation positioning effect. The user can then see a magnified image of the object through the eyepiece unit, regardless of the location, and the eyepiece group can be changed according to the usage scenario, making it convenient to use. Attached Figure Description

[0019] Other features and effects of this utility model will be clearly presented in the embodiments with reference to the accompanying drawings, wherein:

[0020] Figure 1 This is a schematic diagram illustrating the first embodiment of the optical magnification device with replaceable lens group of this utility model, which is worn on a user's head and used to magnify the viewing of an object;

[0021] Figure 2 This is a perspective view of the first embodiment;

[0022] Figure 3 This is a perspective view of the first embodiment viewed from the rear to the front.

[0023] Figure 4 This is an incomplete exploded perspective view of the first embodiment;

[0024] Figure 5 Looking from the back to the front Figure 4 3D exploded view;

[0025] Figure 6 This is a cross-sectional view of a mirror assembly unit in the first embodiment;

[0026] Figures 7 to 10 It is similar to Figure 6 The sectional view is used to illustrate different usage scenarios;

[0027] Figure 11This is a schematic diagram of the use of the first embodiment, illustrating that the curvature of one of the top load-bearing components in the first embodiment can be changed;

[0028] Figure 12 It is along Figure 1 A schematic cross-sectional view taken by line XII-XII in the diagram;

[0029] Figure 13 This is a perspective view of a variation of the first embodiment;

[0030] Figure 14 This is a three-dimensional schematic diagram illustrating the second embodiment of the optical magnification device with replaceable lens group of this utility model, which is worn on the user's head and shoulders;

[0031] Figure 15 yes Figure 14 Side view;

[0032] Figure 16 yes Figure 14 Top view;

[0033] Figure 17 This is a side view diagram illustrating that the third embodiment of the optical magnification device with replaceable lens group of this utility model is placed on a ground;

[0034] Figure 18 This is a perspective view of the third embodiment; and

[0035] Figure 19 This is a side view diagram illustrating the fourth embodiment of the optical magnification device with replaceable lens group of this utility model placed on a table. Detailed Implementation

[0036] See Figures 1 to 3 The first embodiment of the optical magnification device with replaceable lens assembly of this utility model is suitable for wearing on the head of a user 91 and is used to reflect a magnified image of an object 92 to the eyes of the user 91. The optical magnification device with replaceable lens assembly includes a support unit 1, a frame unit 2, a lens assembly unit 3, and a counterweight unit 4.

[0037] The support unit 1 includes a head frame 101. The head frame 101 is worn on the head of the user 91 and surrounds and abuts the periphery of the user 91's head. The head frame 101 includes a front frame strip 11 for abutting against the forehead of the user 91, two side frame strips 12 spaced apart in a left-right direction Y and connected to the front frame strip 11, and a headband 13 connected to the side frame strips 12 and for abutting against the back of the user 91's head. In this embodiment, the headband 13 has a band body 131 and two fasteners 132 formed on the left and right sides of the band body 131. In some embodiments, the band body 131 is an elastic band or a non-woven band, and each of the fasteners 132 is a Velcro that passes through the rear end of one of the side frame strips 12 and is then fastened, so the length of the headband 13 can be adjusted according to the head circumference of the user 91. In some embodiments, the head frame 101 further includes a plurality of pads 14 disposed on the inner sides of the front frame strip 11 and the side frame strip 12. Each of the pads 14 is, for example but not limited to, foam, and provides a softer touch and / or anti-slip effect. In some embodiments, the headband 13 may be omitted from the head frame 101, as long as the side frame strip 12 is designed as an ear-hook temple.

[0038] See Figure 2 , Figure 4 and Figure 5 The frame unit 2 is disposed on the front side of the head frame 101 along a front-rear direction X, and includes two support arms 21 spaced apart in a left-right direction Y, and a mounting arm 22 extending along the left-right direction Y and connected to the support arms 21. Each support arm 21 has a connecting section 211 connecting to the front frame strip 11, an extension section 212 connected to the connecting section 211, and a pivot 213 passing through the extension section 212 along the left-right direction Y. The mounting arm 22 has an arm portion 221 and at least one magnetic member 222 fixed to the arm portion 221. In this embodiment, the arm portion 221 of the mounting arm 22 has a forward-protruding rectangular protrusion 223 and two recesses 224 located on the inner side and spaced apart. The mounting arm 22 has two magnetic members 222 spaced apart on the left and right and respectively fixed to the recesses 224. In some embodiments, each magnetic member 222 is a magnet.

[0039] The lens assembly unit 3 is disposed on the frame unit 2 and includes an objective lens assembly 31 disposed on the support arm 21 along the left-right direction Y, and an eyepiece assembly 32 that can be replacedly mounted on the mounting arm 22 and is spaced apart from the objective lens assembly 31 in the front-back direction X. The total area of ​​the eyepiece assembly 32 is smaller than the total area of ​​the objective lens assembly 31, and the center position of the eyepiece assembly 32 is higher than the center position of the objective lens assembly 31 in the vertical direction Z.

[0040] The objective lens assembly 31 is rotatably suspended from the pivot 213, allowing the objective lens assembly 31 to pivot back and forth and change its position relative to the object 92 (see Figure 1 The objective lens assembly 31 has an objective lens mount 311 rotatably pivotally mounted on the pivot 213, and a reflecting mirror 312 fixed to the outside of the objective lens mount 311. The reflecting mirror 312 is, for example, but not limited to, a free-form convex mirror. In this embodiment, the objective lens mount 311 has a base 313 and two pivot portions 314 spaced apart on the top side of the base 313 and pivotally mounted on the pivot 213. Each of the pivot portions 314 is cylindrical.

[0041] See Figures 4 to 6 The eyepiece assembly 32 has an eyepiece mount 321 and a magnifying mirror 322 mounted on the eyepiece mount 321 and facing the objective lens assembly 31. The magnifying mirror 322 is, for example, but not limited to, a free-form concave mirror and is opposite to the reflecting mirror 312. The eyepiece mount 321 has a base 323 for mounting the magnifying mirror 322, a first positioning member 324 fixed to the base 323 and detachably connected to the mounting arm 22, and a second positioning member 325 extending outward and downward from the base 323 and detachably snapped onto the mounting arm 22. The base 323 has two grooves 326 located between its top and bottom sides. In this embodiment, the first positioning member 324 has two magnets 327 respectively fixed to the grooves 326 and used to magnetically attract the magnetic member 222. In some embodiments, the first positioning member 324 may also be a magnet or a snap-fit ​​structure. In this embodiment, the second positioning member 325 has two spaced-apart inserts 328 in the left-right direction Y, and the inserts 328 define an avoidance groove 329 for the protrusion 223 to engage. The inserts 328 are snapped onto the front side of the mounting arm 22. The pivot portion 314 is located between the top and bottom sides of the eyepiece assembly 32 in the up-down direction Z.

[0042] This embodiment utilizes both the magnetic attraction between the magnetic member 222 and the magnet 327, and the snap-fit ​​action between the second positioning member 325 and the mounting arm 22 to achieve the purpose of replacement and enhance stability. However, it is understood that in some embodiments, the purpose of detachably connecting the first positioning member 324 to the mounting arm 22 can be achieved by utilizing either the magnetic attraction or the snap-fit ​​action.

[0043] See Figure 1 The lens unit 3 is used to construct an optical path from the object 92 to the objective lens group 31, then from the objective lens group 31 to the eyepiece group 32, and finally from the eyepiece group 32 to the user 91's eye. The user 91 can see a magnified image of the object 92 on the eyepiece group 32. By magnifying the contents of the object 92 through the lens unit 3, the user 91 can easily see the magnified image clearly and maintain a correct posture, avoiding forward head tilting.

[0044] See Figure 6 and Figure 7 Specifically, the eyepiece group 32 has a first eyepiece group 301 and a second eyepiece group 302. The first eyepiece group 301 and the second eyepiece group 302 have the same element structure, and their detailed structure has been described above. The difference lies in the curvature and / or size of the freeform surface of the first eyepiece group 301 and the second eyepiece group 302. One of the first eyepiece group 301 and the second eyepiece group 302 is selectively mounted on the mounting arm 22. Figure 6 The mirror unit 3 described herein is suitable for use when viewing a laptop at a desk, and the object 92 (see Figure 1 It is a vertical screen with a horizontal keyboard. Figure 7 The mirror unit 3 described above is suitable for piano playing scenarios, and the object 92 is sheet music and keyboard (not shown in the figure), and compared to Figure 6 , Figure 7 The objective lens group 31 pivots further forward about the pivot part 314 as the center of rotation, and the second eyepiece group 302 is more... Figure 6 The first eyepiece group 301 is moved upward and tilted further backward.

[0045] See Figures 8 to 10 In some embodiments, the eyepiece group 32 has a plurality of second eyepiece groups 302, and each second eyepiece group 302 has a different freeform surface curvature and / or size. Therefore, the user 91 (see Figure 1 The first eyepiece group 301 or one of the second eyepiece groups 302 can be replaced according to the usage scenario and mounted on the mounting arm 22. For example... Figure 8The object 92 (i.e., the book) is horizontal, and the second eyepiece group 302 has a standard curvature. Figure 9 It involves looking at the large screen in front of you during class, and Figure 9 The top of the second eyepiece group 302 is compared to Figure 8 The height of the second eyepiece group 302 is shortened. Figure 10 It's sitting and looking at a phone on your lap, and compared to Figure 6 , Figure 10 The objective lens group 31 pivots further back around the pivot part 314 as the rotation center.

[0046] In addition, this invention can also be used to magnify and inspect workpieces at the manufacturing site or for reading while lying down, which will not be elaborated further here. In some embodiments, the objective lens group 31 can be designed with a quick-release structure for easy replacement.

[0047] Understandably, based on the relative position and angle of the objective lens group 31 and the eyepiece group 32, and the distance and height from the object 92, the optimal curvature values ​​of the freeform surfaces of the magnifying mirror 322 and the reflecting mirror 312 can be calculated to achieve the best viewing angle for comfort.

[0048] See Figure 11 and Figure 12 The counterweight unit 4 is disposed on the head frame 101 and configured to counteract the gravity of the lens assembly unit 3. The counterweight unit 4 includes a top support 41, a rear counterweight 42, two side counterweights 43, and an adjustment assembly 44.

[0049] The top support member 41 is disposed on the top side of the support unit 1 along the vertical direction Z and extends upward and backward from the front frame strip 11 of the head frame 101. The rear counterweight member 42 is disposed within the belt body 131 of the head strap 13 along the front-rear direction X. In this embodiment, the rear counterweight member 42 is iron shot, but is not limited thereto. The side counterweight members 43 are respectively disposed within the side frame strips 12. In this embodiment, each side counterweight member 43 is an iron sheet, but is not limited thereto.

[0050] The top support 41 serves as a fulcrum for supporting the front frame strip 11, preventing it from slipping due to the weight of the lens unit 3. The rear counterweight 42 and the side counterweights 43 form a three-point support at the back and left / right sides of the head, respectively. Combined with the balancing effect of the top support 41 in the vertical Z and front-back X directions, the head frame 101 can counteract (i.e., offset) the weight of the lens unit 3 through the three-dimensional spatial arrangement of the counterweight units 4. This prevents the front frame strip 11 from slipping, making it more comfortable to wear. Furthermore, the head frame 101 will not shift or tilt when the user turns their head, raises their head, or changes their posture, thus providing a stable wearing effect. It is understood that in other variations, the number of counterweights can be reduced or increased, the installation position can be adjusted, and the weight or material can be changed, as long as it can counteract the weight of the lens unit 3.

[0051] See Figure 2 and Figure 11 The adjustment assembly 44 is mounted on the front frame 11 and the top support 41, and has an adjustment member 441 and a cover 442. The adjustment member 441 is rotatable and can move back and forth. The adjustment member 441 pushes against one end of the top support 41 in the back-and-forth direction X and is used to change the curvature of the top support 41. The cover 442 is snapped onto the front frame 11 and covers the lower half of the adjustment member 441 from the front. Therefore, the upper half of the adjustment member 441 is exposed by the cover 442 to facilitate the user 91 to turn it by hand. In other variations, the adjustment assembly 44 may be a spring pin or other positioning engagement element.

[0052] The adjustment member 441 can be rotated and moved back and forth to change the height of the other end of the top support member 41 in the vertical direction Z, as well as the curvature of the top support member 41. Therefore, the user 91 can adjust the fit of the top support member 41 to their head according to their head shape, thereby improving wearing comfort.

[0053] It is understood that in some embodiments, the counterweight unit 4 can be omitted, and the headband 13 can be tightened to securely wear the head of the user 91.

[0054] See Figure 13 This is a variation of the eyepiece assembly 32 and the frame unit 2, the main difference being that the second positioning member 325 of the eyepiece assembly 32 is a continuous piece of the same size, and the frame unit 2 is omitted. Figure 2 The protrusion 223 in the middle also allows the eyepiece assembly 32 to be interchangeably mounted on the mounting arm 22 (see...). Figure 4 ).

[0055] See Figures 14 to 16 The second embodiment of this utility model is similar to the first embodiment, except that:

[0056] The second embodiment is used to be worn on the head and shoulders of the user 91.

[0057] The support unit 1 further includes a shoulder frame 102 connecting the head frame 101 and the frame unit 2. In some embodiments, the shoulder frame 102 may only connect to the head frame 101 or only connect to the frame unit 2. The shoulder frame 102 has two shoulder arms 151 for abutting against the shoulders of the user 91, two limiting arms 152 extending along the left-right direction Y and connecting to the shoulder arms 151, two connecting arms 153 extending upwardly from the shoulder arms 151 respectively, and two ear pads 154 extending from the connecting arms 153 respectively. The limiting arms 152 are used to abut against the chest and back of the user 91 respectively. The ear pads 154 are used to abut against the ears of the user 91. The shoulder frame 102 can form multiple support points on the shoulders and head of the user 91, which can not only reduce the load on the head, but also improve the wearing stability.

[0058] See Figures 17 to 18 The third embodiment of this utility model is similar to the first embodiment, except that:

[0059] The third embodiment is used to place it on a ground surface 93.

[0060] The support unit 1 includes a stand 103, which has a base 161 for placement on the ground 93, and a frame 162 extending upward from the base 161 and connected to the eyeglass frame unit 2. In this embodiment, the base 161 is a tripod. The frame 162 is located in front of the user's eyes. Specifically, the frame 162 has a pole 163 extending upward from the base 161, and an extension rod 164 extending horizontally from the top of the pole 163. The extension rod 164 is provided for the eyeglass frame unit 2.

[0061] The third embodiment further includes a transmission line 5, which is applied to the object 92, an electronic screen device such as a mobile phone. The lens unit 3 also includes an image projection module (not shown). The transmission line 5 electrically connects the image projection module to the object 92 and projects the screen image of the object 92 onto the eyepiece group 32 via an optical path. The lens unit 3 can also construct an optical path that magnifies the image of the object 92 and reflects it to the eye of the user 91. Since the structure and optical path construction of the image projection module are existing technologies and have various variations, those skilled in the art can deduce extended details based on the above description, and therefore will not be elaborated further.

[0062] See Figure 19 The fourth embodiment of this utility model is similar to the third embodiment, except that:

[0063] The fourth embodiment is used to place it on a desktop 94.

[0064] The support unit 1 includes a stand 103 for placement on the desktop 94. The stand 103 has a base 161 and an extension rod 164 extending upwardly from the base 161 and connected to the eyeglass frame unit 2. The user 91 (see...) Figure 17 The object 92 can also be seen through the eyepiece group 32 (see...). Figure 17 () A magnified image.

[0065] As can be seen from the foregoing embodiments, the support unit 1 of this utility model has a variety of shape variations and functional expansions, and can be designed as a wearable model, a standing model, or a tabletop model.

[0066] In summary, this utility model allows for the replacement of the eyepiece assembly 32 according to the usage scenario, such as when reading at a desk, viewing a laptop, playing the piano, watching a large screen in class, reading while lying down, looking at a mobile phone while sitting, or inspecting a workpiece. The user 91 simply selects the appropriate eyepiece assembly 32, connects it to the mounting arm 22 using the first positioning member 324 to achieve the installation and positioning effect, and then selectively adjusts the tilt angle of the objective lens assembly 31 to see the magnified content of the object 92 through the lens unit 3. The user 91 can maintain a correct posture for easy viewing, regardless of the location, making it convenient to use. Therefore, this utility model effectively achieves its intended purpose.

[0067] The above description is merely an embodiment of this utility model and should not be construed as limiting the scope of this utility model. Any simple equivalent changes and modifications made in accordance with the claims and description of this utility model shall still fall within the scope of this utility model.

Claims

1. An optical magnification device with interchangeable lens groups, suitable for reflecting a magnified image of an object to the user's eye, characterized in that: The optical magnification device capable of replacing lens groups includes: Support unit; A frame unit is disposed in the support unit and includes two arms spaced apart in the left-right direction, and a mounting arm extending along the left-right direction and connected to the arms. and A lens assembly unit is disposed in the frame unit and includes an objective lens assembly disposed in the arm and an eyepiece assembly that can be interchangeably mounted on the mounting arm and spaced apart from the objective lens assembly in the front-rear direction. The eyepiece assembly has a first positioning element that can be detachably connected to the mounting arm. The lens assembly unit is used to construct an optical path that magnifies the image of the object and is reflected by the eyepiece assembly to the user's eye.

2. The optical magnification device with replaceable lens groups according to claim 1, characterized in that: The eyepiece assembly has a first eyepiece assembly and at least one second eyepiece assembly, the curvature and / or size of the first eyepiece assembly being different from the curvature and / or size of the second eyepiece assembly, and one of the first eyepiece assembly and the second eyepiece assembly being selectively mounted on the mounting arm.

3. The optical magnification device with replaceable lens groups according to claim 1, characterized in that: The mounting arm has at least one magnetic element, the eyepiece assembly has an eyepiece mount and a magnifying mirror mounted on the eyepiece mount and facing the objective lens assembly, and the first positioning element is a magnetic element fixed to the eyepiece mount and used to magnetically attract with the magnetic element.

4. The optical magnification device with replaceable lens groups according to claim 1, characterized in that: The eyepiece assembly has an eyepiece mount and a magnifying lens mounted on the eyepiece mount and facing the objective lens assembly. The eyepiece mount has a base for the magnifying lens and the first positioning member to be disposed, and a second positioning member extending outward from the base and detachably snapped onto the mounting arm.

5. The optical magnification device with replaceable lens groups according to claim 4, characterized in that: The mounting arm of the frame unit has an arm portion and two magnetic suction members fixed at intervals on the arm portion. The first positioning member has two magnets for magnetically attracting the magnetic suction members.

6. The optical magnification device with replaceable lens groups according to claim 5, characterized in that: The mounting arm has a forward-protruding protrusion, and the second positioning member has two spaced-apart inserts in the left-right direction, the inserts defining a clearance groove for the protrusion to engage, and the inserts snapping onto the front side of the mounting arm.

7. The optical magnification device with replaceable lens groups according to claim 1, characterized in that: The optical magnification device with replaceable lens group also includes a counterweight unit, which includes a top support member disposed on the top side of the support unit in a vertical direction, the top support member extending upward and backward from the front side of the support unit.

8. The optical magnification device with replaceable lens groups according to claim 7, characterized in that: The counterweight unit also includes a rear counterweight and two side counterweights. The rear counterweight is disposed on the rear side of the support unit along the front-back direction, and the side counterweights are disposed on the left and right sides of the support unit, respectively.

9. The optical magnification device with replaceable lens groups according to claim 7, characterized in that: The counterweight unit further includes an adjustment group installed on the support unit and the top load-bearing member. The adjustment group has an adjustment member that can move back and forth. The adjustment member can move along the back and forth direction and push against the top load-bearing member.

10. The optical magnification device with replaceable lens groups according to claim 1, characterized in that: The support unit includes a head frame for wearing on the user's head, the head frame having a front frame strip for abutting against the user's forehead, and two side frame strips spaced apart from the front frame strip.

11. The optical magnification device with replaceable lens groups according to claim 10, characterized in that: The support unit also includes a shoulder frame connecting at least one of the head frame and the eyeglass frame unit, the shoulder frame having two shoulder arms for resting against the user's shoulders.

12. The optical magnification device with replaceable lens groups according to claim 1, characterized in that: The support unit includes a stand with a frame that connects to the frame unit and is located in front of the user's eyes.

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