Head-mounted amplification device

Abstract

A head-mounted magnifying device is suitable for being worn on the head of a user and is used for reflecting a magnified image of an object to the eyes of the user. The head-mounted amplification device comprises a head frame unit, a lens bracket unit, a lens group unit and a counterweight unit. The glasses frame unit is arranged on a front frame strip of the head frame unit and comprises two supporting arms. The lens group unit comprises an objective lens group and an eyepiece group which are arranged on the support arm. The lens group unit is used for constructing an optical path which is reflected by the object to the objective lens group, reflected by the objective lens group to the eyepiece group, and reflected by the eyepiece group to the eyes of the user. The balance weight unit is arranged on the head frame unit and comprises a head top bearing piece. The head top bearing piece is provided with a near end arranged on the front frame strip and a far end located on the head top of the user.

Description

TECHNICAL FIELD

[0001] The utility model relates to an optical device, in particular to a head-mounted magnifying device. BACKGROUND

[0002] Due to the popularity of mobile phones and computers, humans spend a long time in close-range viewing of small fonts, which makes the problem of vision degradation more serious. In addition, users will unconsciously tilt their heads forward to see the small fonts on the mobile phone, which causes the cervical spine to deform. In order to solve the problem of close-range eye use and poor reading posture, a magnifying device can assist users to read more easily.

[0003] For example, the forced anti-myopia reading telephoto lens disclosed in Chinese utility model patent publication No. CN218099783U includes a stand installed on the ground, a reflecting objective lens installed on the top side of the stand and located above the desk, and an eyepiece opposite the reflecting objective lens. The user places the book on the desk, and through the optical reflection principle of the reflecting objective lens and the eyepiece, the content of the book can be reflected to the user's eyes.

[0004] However, the stand of the telephoto lens is relatively large in size, occupies a lot of space, and is not very convenient to use, so there is still room for improvement. SUMMARY

[0005] The utility model aims at providing a head-mounted magnifying device that is small in size and convenient to use.

[0006] The head-mounted magnifying device of the utility model is suitable for being worn on the head of a user and is used to reflect a magnified image of an object to the eyes of the user. The head-mounted magnifying device includes a head frame unit, a lens holder unit, a lens group unit, and a counterweight unit.

[0007] The head frame unit is used to be worn on the head of the user and is attached to the lateral side of the head of the user. The head frame unit includes a front frame strip used to be attached to the forehead of the user. The lens holder unit is arranged on the front side of the head frame unit in the front-rear direction and includes two support arms arranged in the left-right direction. The lens group unit is arranged on the lens holder unit and includes an objective lens group arranged on the support arms in the left-right direction and an eyepiece group arranged on the front side of the objective lens group in the front-rear direction. The lens group unit is used to construct an optical path in which the object is reflected to the objective lens group, reflected to the eyepiece group through the objective lens group, and reflected to the eyes of the user through the eyepiece group. The counterweight unit is arranged on the head frame unit and includes a head top bearing piece installed on the front frame strip. The head top bearing piece has a proximal end arranged on the front frame strip and a distal end opposite the proximal end and extending backward and located on the top of the head of the user.

[0008] The head-mounted magnifying device of the utility model, the head frame unit still includes two side frame strips and headband, the side frame strip is arranged in interval in the left and right direction and is extended along the front and back direction from the two opposite ends of the front frame strip, the headband is connected to the opposite end of the side frame strip from the front frame strip and is used for leaning against the back side of the user's head.

[0009] The head-mounted magnifying device of the utility model, the counterweight unit still includes the adjustment group installed in the front frame strip and the head top load bearing piece, the adjustment group has the rod body that can move forward and backward, the rod body is pushed to the proximal end of the head top load bearing piece along the front and back direction and is used for changing the height of the distal end of the head top load bearing piece in the up and down direction.

[0010] The head-mounted magnifying device of the utility model, the front frame strip has the perforation for the rod body to be movably arranged, the adjustment group has the adjustment piece and the ornament cover, the adjustment piece has the rod body and the disc body fixedly connected to the rod body and can be rotated, the ornament cover is installed in the front frame strip, and the lower half of the adjustment piece is covered by the front side of the front frame strip.

[0011] The head-mounted magnifying device of the utility model, the head top load bearing piece is arc-shaped, and has the rigid piece and the flexible piece arranged in the inner side of the rigid piece.

[0012] The head-mounted magnifying device of the utility model, the counterweight unit still includes the first counterweight piece arranged in the headband.

[0013] The head-mounted magnifying device of the utility model, the first counterweight piece is metal sand.

[0014] The head-mounted magnifying device of the utility model, the counterweight unit still includes two second counterweight pieces arranged in the side frame strip respectively.

[0015] The head-mounted magnifying device of the utility model, each second counterweight piece is an iron piece or an iron block.

[0016] The head-mounted magnifying device of the utility model, each branch arm has the connecting segment connected with the front frame strip, the extension segment connected with the connecting segment, and the pivot arranged in the extension segment, the objective lens group is pivoted in the pivot of the branch arm, and the mounting arm connected with the extension segment of the branch arm in the left and right direction is further included in the lens holder unit, and the mounting arm is used for arranging the ocular lens group.

[0017] The head-mounted magnifying device of the utility model, the head top load bearing piece is T-shaped, and has two wing parts located at the distal end and spaced apart in the left and right direction.

[0018] The beneficial effects of this invention are as follows: Users can see a magnified image of the object on the eyepiece assembly simply by wearing the headband unit, thus maintaining a correct posture and avoiding forward head tilting. Simultaneously, the head-mounted weight plate of the counterweight unit uses the proximal end as a balance point to support the front frame strip, preventing it from slipping due to the weight of the lens assembly unit, resulting in a more comfortable fit. This invention is a head-mounted magnifying device, therefore it is small in size, unaffected by location, convenient to carry and use, and can be worn stably. 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 one embodiment of the head-mounted magnifying device of this utility model, 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 embodiment described;

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

[0023] Figure 4 This is an exploded perspective view of the embodiment described above;

[0024] Figure 5 It is along Figure 1 A cross-sectional view taken by line VV in the diagram;

[0025] Figure 6 It is along Figure 5 The sectional view intercepted by line VI-VI in the middle;

[0026] Figure 7 This is a partial cross-sectional view of the embodiment described;

[0027] Figure 8 It is similar Figure 7 The cross-sectional view is shown, but the curvature of one of the top support plates in the embodiment is changed;

[0028] Figure 9 It is similar Figure 2 The three-dimensional diagram illustrates a variation of the head-supporting plate. Detailed Implementation

[0029] See Figure 1 and Figure 2The head-mounted magnification device of the present application is suitable for being worn on the head of a user 91 and used to reflect a magnified image of an object 92 to the eyes of the user 91. The head-mounted magnification device comprises a head frame unit 1, a frame unit 2, a lens unit 3, and a counterweight unit 4.

[0030] The head frame unit 1 is used to be worn on the head of the user 91 and to be attached around the head of the user 91. The head frame unit 1 comprises a front frame bar 11 used to be attached to the forehead of the user 91, two side frame bars 12, and a headband 13 used to be attached to the back of the head of the user 91.

[0031] Referring to Figures 2 to 5 The front frame bar 11 has a middle part 111 and two side parts 112 formed on the left and right sides of the middle part 111 in the left-right direction Y. The middle part 111 has a slot 113 and a through hole 114 located in the slot 113 and extending in the front-back direction X. In some embodiments, the front frame bar 11 further has a cushion 115 formed on the inner side, which can provide a soft touch and / or a slip resistance. The side frame bars 12 are spaced apart in the left-right direction Y and pivotally arranged at the opposite ends of the front frame bar 11. Each of the side frame bars 12 extends rearward from the front frame bar 11 in the front-back direction X. The headband 13 is connected to the side frame bars 12 at the ends opposite to the front frame bar 11. In some embodiments, each of the side frame bars 12 has a temple 121 and a soft pad 122 located on the inner side of the temple 121. The temple 121 of the present embodiment is made of plastic material. The soft pad 122, for example but not limited to, is a foam, which can provide a softer touch and / or a slip resistance. In the present embodiment, the headband 13 has a band body 131 and two fastening members 132 formed on the left and right sides of the band body 131 and fastened to the side frame bars 12, respectively. In some embodiments, the band body 131 is an elastic band or a non-woven fabric band, and each of the fastening members 132 is a Velcro and is fastened to the rear end of the corresponding side frame bar 12, so that the length of the headband 13 can be adjusted. By the pivoting connection of the side frame bars 12 and the front frame bar 11 and the length adjustment of the headband 13, different head circumferences can be adapted, achieving a comfortable wearing effect.

[0032] The mirror frame unit 2 is disposed substantially along the front-rear direction X at the front side of the head frame unit 1. The mirror frame unit 2 includes two support arms 21 disposed at intervals along the left-right direction Y, and a mounting arm 22 connected to the support arms 21 along the left-right direction Y. Each of the support arms 21 has a connecting section 211 connected to the front frame bar 11, an extension section 212 connected to the connecting section 211, and a pivot 213 penetrating the extension section 212 along the left-right direction Y. In the present embodiment, the connecting section 211 of each of the support arms 21 is integrally connected to the front frame bar 11, and extends forwardly and then downwardly from the front frame bar 11. The extension section 212 of each of the support arms 21 is integrally connected to the connecting section 211, and extends substantially horizontally.

[0033] Referring to Figures 3 to 5 , the mirror group unit 3 is disposed at the mirror frame unit 2, and includes an objective lens group 31 disposed along the left-right direction Y at the support arms 21, and an ocular lens group 32 disposed at the front side of the objective lens group 31 along the front-rear direction X and mounted at the mounting arm 22. In the present embodiment, the objective lens group 31 is rotatably suspended at the pivot 213, so that the objective lens group 31 can be pivoted front-rear to change the inclination angle. The objective lens group 31 has an objective lens mount 311 rotatably pivoted at the pivot 213, and a reflecting surface mirror 312 fixed at the outer side of the objective lens mount 311. The ocular lens group 32 has an ocular lens mount 321 mounted at the mounting arm 22, and a magnifying surface mirror 322 fixed at the inner side of the ocular lens mount 321. The magnifying surface mirror 322 faces the reflecting surface mirror 312. In some embodiments, the reflecting surface mirror 312 is a convex mirror, and the magnifying surface mirror 322 is a concave mirror, but not limited thereto.

[0034] As Figure 1 shown, the mirror group unit 3 is configured to form an optical path from the object 92 reflected to the objective lens group 31, reflected to the ocular lens group 32 via the objective lens group 31, and reflected to the eyes of the user 91 by the ocular lens group 32. The user 91 can see a magnified image of the object 92 on the ocular lens group 32. The content of the object 92 is magnified by the mirror group unit 3, so that the user can easily see the magnified image and maintain the correct posture, which can avoid the head forward inclination.

[0035] Referring to Figures 4 to 6The counterweight unit 4 is arranged in the head frame unit 1 and includes a head top bearing piece 41, a first counterweight 42, two second counterweights 43, and an adjustment group 40. Because the mirror group unit 3 has the objective lens group 31 and the eyepiece lens group 32, the front side of the head frame unit 1 is heavy, so the counterweight unit 4 is arranged in the head frame unit 1 to balance the weight. The head top bearing piece 41 is a long strip and has a proximal end 411 arranged at the proximal end of the front frame strip 11 and a distal end 412 opposite the proximal end 411 and extending rearward and above the head of the user 91 in the up-down direction Z. The arc-shaped structure between the distal end 412 and the proximal end 411 is as close as possible to the head top of the user 91. In some embodiments, the head top bearing piece 41 is arc-shaped, and the arc-shaped structure between the distal end 412 and the proximal end 411 is as close as possible to the head top of the user 91. The head top bearing piece 41 has a hard piece 413 and a flexible piece 414 arranged inside the hard piece 413. In some embodiments, the flexible piece 414 is foam, which can increase the wearing comfort, but is not limited thereto.

[0036] The first counterweight 42 is covered in the strap body 131 of the headband 13. In some embodiments, the first counterweight 42 is metal sand, but is not limited thereto. In this embodiment, the first counterweight 42 is iron sand and is filled in the inside of the strap body 131. The first counterweight 42 is located on the opposite side of the mirror group unit 3 in the front-rear direction X.

[0037] The second counterweights 43 are arranged in the side frame strips 12, respectively. In this embodiment, each of the second counterweights 43 is covered in the temple 121 of the corresponding side frame strip 12, but can also be clamped between the temple 121 and the soft pad 122 or covered in the soft pad 122. In some embodiments, each of the second counterweights 43 is an iron piece or an iron block.

[0038] Referring to Figure 1 , Figure 5 and Figure 7, the head-bearing piece 41 balances the front frame bar 11 with the proximal end 411 as the fulcrum, so that the front frame bar 11 will not slide down due to the weight of the lens group unit 3. The first counterweight 42 and the second counterweight 43 form a three-point support on the back and both sides of the head, respectively, and the head-bearing piece 41 also balances in the up-down direction Z and the front-back direction X, so that the head frame unit 1 can counteract (i.e., offset) the gravity of the lens group unit 3 through the three-dimensional spatial arrangement of the counterweight unit 4, the front frame bar 11 is not prone to slide down, and the wearer is more comfortable, and the head frame unit 1 will not be offset or tilted when the user 91 turns his head, lifts his head, or changes his posture, so it also has the effect of stable wearing. It can be understood that in other variations, the number of the first counterweight 42 and the second counterweight 43 can be reduced or increased, the installation position can be adjusted, and the weight or material can be changed, as long as the gravity of the lens group unit 3 can be counteracted, so that the front frame bar 11 will not slide down.

[0039] Referring to Figure 4 and Figure 6 , the adjustment set 40 is installed on the front frame bar 11 and the head-bearing piece 41, and has an adjustment piece 401 and a decorative cover 402. The adjustment piece 401 has a rod body 403 that can move forward and backward in the front-back direction X and is positioned in the through hole 114, and a disc body 404 that is fixedly connected to the rod body 403 and can be rotated. In some embodiments, the adjustment piece 401 is a one-piece component, but is not limited thereto. The rod body 403 is a screw and pushes against the proximal end 411 of the head-bearing piece 41 in the front-back direction X. The decorative cover 402 is buckled on the front frame bar 11 and is positioned in the groove 113, and the lower half of the adjustment piece 401 is hidden by the front side of the front frame bar 11. Therefore, the upper half of the disc body 404 is exposed from the decorative cover 402 to facilitate the user 91 (see Figure 1 ) to turn it with his hand. In other variations, the adjustment set 40 can be a spring pin or other positionable engagement element.

[0040] Referring to Figure 7 and Figure 8 , the adjustment piece 401 can be rotated to make the rod body 403 push the proximal end 411 of the head-bearing piece 41, thereby changing the height of the distal end 412 of the head-bearing piece 41 in the up-down direction Z and the curvature of the head-bearing piece 41. For example, Figure 8 the rod body 403 of the adjustment piece 401 in Figure 7The position of the adjusting group 40 is more towards the back side, so that the height of the distal end 412 of the head top load piece 41 is lowered to change the arc of the head top load piece 41. Therefore, the user 91 can adjust the fit of the head top load piece 41 with the head according to the head shape, thereby improving the wearing comfort. However, in some embodiments, the counterweight unit 4 can omit the adjusting group 40.

[0041] As shown in Figure 9 In some embodiments, the shape of the head top load piece 41 can be changed, such as but not limited to T-shaped. The head top load piece 41 is located at the distal end 412 and is formed with two wing portions 415 spaced apart in the left-right direction Y. Each wing portion 415 extends in the left-right direction Y, thereby improving the wearing balance stability.

[0042] In summary, the head-mounted magnification device has small volume, is not affected by the site, is convenient to carry and use, and can be stably worn. The user 91 only needs to wear the head frame unit 1 on the head, and can see the magnified content of the object 92 through the lens group unit 3, so that the user 91 can maintain the correct posture and easily watch. The utility model also considers the weight of the lens group unit 3, and sets the counterweight unit 4 on the head frame unit 1, thereby resisting the gravity of the lens group unit 3. The head top load piece 41 takes the proximal end 411 as the balance fulcrum for supporting the front frame strip 11, which can effectively avoid the head frame unit 1 from tilting, deviating or skewing, and has the effect of stable wearing. Therefore, the purpose of the utility model can be achieved.

[0043] The above is only an embodiment of the utility model, and cannot limit the scope of the utility model. Any simple equivalent changes and modifications made according to the claims and the content of the specification are still within the scope of the utility model.

Claims

1. A head-mounted magnification device adapted to be worn on a user's head and to reflect a magnified image of an object to the user's eyes, characterized by: The head-mounted magnifying device comprises: a head frame unit for wearing on the head of the user and for wrapping around the lateral side of the head of the user, the head frame unit including a front frame bar for abutting against the forehead of the user; a frame unit disposed on the front side of the head frame unit in the front-rear direction and including two support arms disposed in the left-right direction at intervals; a lens unit disposed on the frame unit and including an objective lens group disposed on the support arms in the left-right direction and an ocular lens group disposed on the front side of the objective lens group in the front-rear direction, the lens unit being configured to establish an optical path in which light reflected from the object to the objective lens group, reflected from the objective lens group to the ocular lens group, and reflected from the ocular lens group to the eye of the user; and a counterweight unit disposed on the head frame unit and including a head top bearing piece mounted on the front frame bar, the head top bearing piece having a proximal end disposed on the front frame bar and a distal end opposite to the proximal end and extending rearward and located on the top of the head of the user. The head frame unit further includes two side frame bars disposed in the left-right direction at intervals and extending in the front-rear direction from two opposite ends of the front frame bar, and a headband connected to the side frame bars at an end opposite to the front frame bar and configured to abut against the back side of the head of the user.

2. A head-wearable amplification device according to claim 1, characterised in that: The counterweight unit further includes an adjusting group mounted on the front frame bar and the head top bearing piece, the adjusting group having a rod body movable in the front-rear direction, the rod body being pushed against the proximal end of the head top bearing piece in the front-rear direction and configured to change the height of the distal end of the head top bearing piece in the up-down direction.

3. The head-mounted magnification device of claim 1, wherein: The front frame bar has a through hole through which the rod body is movably disposed, the adjusting group has an adjusting member and a cover, the adjusting member having the rod body and a disc body fixedly connected to the rod body and rotatable, and the cover is mounted on the front frame bar and covers the lower half of the adjusting member from the front side of the front frame bar.

4. A head-wearable amplification device according to claim 3, wherein: The head top bearing piece is arc-shaped and has a rigid piece and a flexible piece disposed inside the rigid piece.

5. The head-mounted magnification device of claim 1, wherein: The counterweight unit further includes a first counterweight member disposed on the headband.

6. The head-mounted magnification device of claim 2, wherein: The first counterweight member is metal sand.

7. A head-wearable amplification device according to claim 6, characterised in that: The counterweight unit further includes two second counterweight members respectively disposed on the side frame bars.

8. The head-mounted magnification device of claim 2, wherein: Each of the second counterweight members is an iron piece or an iron block.

9. A head-wearable amplification device according to claim 8, wherein: Each of the support arms has a connecting segment connected to the front frame bar, an extending segment connected to the connecting segment, and a pivot disposed in the extending segment, the objective lens group is pivotally disposed on the pivot of the support arm, the frame unit further includes a mounting arm connected to the extending segment of the support arm in the left-right direction, and the mounting arm is configured to dispose the ocular lens group.

10. The head-mounted magnification device of claim 1, wherein: The head top bearing piece is T-shaped and has two wing portions located on the distal end and spaced apart in the left-right direction.

11. The head-mounted magnification device of claim 1, wherein: ​

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