TWI722743B - Lens device with light-shielding structure - Google Patents

Abstract

The present invention discloses a lens device with light-shielding structure. A control module includes a control circuit board and a photosensitive element. A light emitting module includes a light circuit board and a light emitting element electrically connected to the control circuit board. A lens module is provided corresponding to the photosensitive element including a lens barrel and a plurality of lenses, and a focusing lens is set in front of the lens module. A reflection sheet is disposed between the lens module and the focusing lens and that can reflect the light emitted by the light emitting element for passing through the focusing lens. A lens hood is connected to the lens barrel, and a light shielding section is extended outward from the front edge of the lens barrel to block the light reflected by the reflection sheet without directly entering the lens barrel.

Description

Lens device with shading structure

The invention relates to a lens module, in particular to a lens device with a light-shielding structure.

In general, when a camera is in use, if a strong light from a poor angle enters the lens, the image quality of the shot will be poor. The light spots will appear, and the severe ones will make the overall image appear hazy. In this regard, the current camera will install a hood in front of the lens to reduce the image quality damage caused by stray light during shooting and increase the color and saturation of the image.

Furthermore, commercially available skin quality testing instruments use lens modules to photograph the skin to be tested at close range, and then analyze the captured skin images to learn the physiological condition of the skin to be tested. As shown in Figure 1, the lens device 1a currently used for skin quality testing equipment is mainly provided with a lens module 10a, a light-emitting element 20a, and a photosensitive element 30a. The operation mode is to bring the focusing lens 40a close to the skin to be tested. The light emitted by the light-emitting element 20a, for example, the light 21a, will pass through the focusing lens 40a and be reflected after passing through the skin to be tested. Finally, the light reflected from the skin to be tested will penetrate the focusing lens 40a and pass through the focusing lens 40a. The lens module 40a is introduced into the photosensitive element 30a to obtain a skin image.

Please refer to FIG. 2, which shows the skin image obtained by the current lens device 1a. Furthermore, in FIG. 1, the light emitting element 20a in the lens device 1a emits a part of the light with a poor angle, such as the light 22a, which is reflected by the reflective sheet 50a and directly enters the lens module 10a. In addition, the poor angle of light is the cause of the poor quality of the captured images.

In view of this, the inventor of the present invention focused on the above-mentioned prior art, especially concentrated research and the application of scientific theory, and tried to solve the above-mentioned problems, which became the goal of the present inventor's improvement.

The present invention provides a lens device with a light-shielding structure. The light-shielding hood structure extends from the front edge of the lens barrel to a light-shielding section to shield the light reflected by the reflective sheet from directly entering the lens barrel, thereby avoiding angles. Poor light enters the lens barrel and affects image quality.

In the embodiment of the present invention, the lens device with a light-shielding structure of the present invention includes a control module, a light-emitting module, a lens module, a focusing lens, a reflective sheet, and a hood. The control module includes a control circuit board and a photosensitive element arranged on the control circuit board; the light emitting module includes a light source circuit board and a light emitting element arranged on the light source circuit board, the light source circuit board is electrically connected to the control circuit board; the lens module corresponds to the photosensitive element And it is arranged on the side of the control circuit board, including the lens barrel and the plural lenses arranged in the lens barrel; the focusing lens is arranged in front of the lens module; the reflecting sheet is arranged between the lens module and the focusing lens, and the reflecting sheet can reflect The light emitted by the light-emitting element passes through the focusing lens; the hood is connected to the lens barrel and extends from the front edge of the lens barrel with a shading section, which shields the light reflected from the reflector and does not directly enter the lens barrel.

Compared with the prior art, the lens device of the present invention has a light-shielding hood structure, and its arrangement is to extend the light-shielding section from the front edge of the lens barrel to shield the light reflected from the reflective sheet so that it does not directly enter The lens barrel, that is, to ensure that the light entering the lens barrel enters from the focusing lens instead of the light reflected from the reflector, so as to avoid stray light (light with poor angle) entering the lens barrel and affect the imaging result, thereby improving the image quality. Increase the utility of the present invention.

1a: Lens device

10a: lens module

20a: Light-emitting element

21a, 22a: light

30a: photosensitive element

40a: Focusing lens

50a: reflective sheet

1: Lens device

10: Control module

11: Control circuit board

12: photosensitive element

20: Light-emitting module

21: light source circuit board

210: Through hole

211: screw hole

22: Light-emitting element

30: lens module

31: lens barrel

32: Lens

33: lens mount

40: Focusing lens

50: reflective sheet

501: first opening

502: second opening

51: Combination hole

60, 60’: hood

61: shading section

70: shell

71: Detection Block

710: Opening

711: Socket

712: cover

72: Grip

80: cable

L1, L2: light

FIG. 1 is a schematic diagram of light traveling of a conventional lens device.

Figure 2 is a skin image obtained by a conventional lens device.

FIG. 3 is a perspective exploded schematic diagram of the lens device of the present invention.

FIG. 4 is a sectional view of the assembly of the lens device of the present invention.

FIG. 5 is a three-dimensional exploded schematic diagram of the lens device of the present invention applied to a skin quality testing instrument.

FIG. 6 is a schematic diagram of a three-dimensional appearance of the lens device of the present invention applied to a skin quality testing instrument.

Fig. 7 is a skin image obtained by the lens device of the present invention.

FIG. 8 is another embodiment of the hood of the lens device of the present invention.

The detailed description and technical content of the present invention are described below in conjunction with the drawings. However, the drawings are only provided for reference and explanation, and are not used to limit the present invention.

Please refer to FIGS. 3 and 4, which are respectively a three-dimensional exploded schematic view and a combined cross-sectional view of the lens device with a light-shielding structure of the present invention. The present invention is a lens device 1 with a light-shielding structure, which includes a control module 10, a light-emitting module 20, a lens module 30, a focusing lens 40, a reflective sheet 50 and a light-shielding cover 60. The control module 10 can control the operation of the light-emitting module 20 and receive the light transmitted by the lens module 30 to perform calculations. Part of the light emitted by the light-emitting module 20 directly passes through the focusing lens 40, and part of the light passes through the focusing lens 40 after being reflected by the reflective sheet 50. In addition, the light passing through the focusing lens 40 is reflected by the object to be measured and then penetrates the focusing lens 40, and then enters Enter the lens module 30, and finally pass it to the control module 10 to perform calculations, and obtain an image of the object to be tested accordingly. The structure of the lens device 1 is described in more detail below.

The control module 10 includes a control circuit board 11 and a photosensitive element 12 arranged on the control circuit board 11.

The light emitting module 20 includes a light source circuit board 21 and a light emitting element 22 arranged on the light source circuit board 21, and the light source circuit board 21 is electrically connected to the control circuit board 11. In this embodiment, a through hole 210 is provided in the center of the light source circuit board 21. In addition, the number of the light emitting elements 22 is plural, and the light emitting elements 22 are arranged around the periphery of the through hole 210.

The lens module 30 is disposed on one side of the control circuit board 11 corresponding to the photosensitive element 12. The lens module 30 includes a lens barrel 31 and a plurality of lenses 32 (see FIG. 4) arranged in the lens barrel 31; in this embodiment, the lens barrel 31 is penetrated through the through hole 210 of the light source circuit board 21 in. In an embodiment of the present invention, the lens module 30 further includes a lens mount 33. The lens mount 33 is combined with the lens barrel 31 and fixed on the control circuit board 11.

Furthermore, the focusing lens 40 is arranged in front of the lens module 30. In addition, the reflective sheet 50 is disposed between the lens module 30 and the focusing lens 40. The reflective sheet 50 can reflect the light emitted by the light-emitting element 22 and pass through the focusing lens 40.

In this embodiment, the light shield 60 and the lens barrel 31 are integrally formed. In addition, the light-shielding cover 60 is connected to the lens barrel 31 and a light-shielding section 61 extends outward from the front edge of the lens barrel 31. Referring to FIG. 2, the light shielding section 61 shields the light reflected from the reflective sheet 50, such as the light L1, from directly entering the lens barrel 31. That is, the shading hood 60 is arranged to ensure that light, such as light L2, will enter the lens barrel 31 from the focusing lens 40 to prevent stray light (light with a poor angle) from entering the lens barrel 31 and affect the image quality .

It should be noted that the extension length of the light-shielding section 61 can be adjusted according to actual usage conditions to prevent light with poor angles from entering the lens barrel 31.

Specifically, the light source circuit board 21 has a plurality of screw holes 211, and the reflector 50 is provided with a plurality of coupling holes 51 corresponding to the positions of the screw holes 211. The reflection sheet 50 is fixed on the light source circuit board 21 through the plurality of screws 52 through the coupling holes 51 and the screw holes 211.

In more detail, the reflector 50 has a tapered cylindrical shape. The reflective cover 50 has a first opening 501 and a second opening 502 opposite to each other; in addition, the first opening 501 is adjacent to the light source circuit board 21, the second opening 502 is adjacent to the focusing lens 40, and the reflective cover The outer contour of 60 is gradually reduced from the first opening 501 toward the second opening 502.

Please also refer to FIGS. 5 and 6, which are respectively a three-dimensional exploded schematic diagram and a three-dimensional appearance schematic diagram of the lens device with a light-shielding structure of the present invention applied to a skin quality testing instrument. The lens device of the present invention can be applied to a skin quality testing instrument. As shown in the figure, the lens device 1 further includes a housing 70 and a cable 80. The control module 10, the light emitting module 20, the lens module 30, the focusing lens 40, the reflection sheet 50 and the light shield 60 are all installed in the housing 70. In addition, one end of the cable 80 is connected to the control circuit board 11, and the other end passes through the housing 70 to connect to an external power source to provide the power required by the lens device 1 during operation.

In this embodiment, the housing 70 includes a detection base 71 and a handle 72 connected to the detection base 71. A front end of the detection seat 71 is provided with an opening 710, and the focusing lens 40 is disposed on the opening 710. Specifically, the detection seat 71 includes a bearing seat 711 and a cover plate 712 corresponding to the bearing seat 711. The socket 711 is connected to the handle 72. In addition, the cover 712 is provided with the opening 710 and is combined with the focusing lens 40.

Please refer to FIG. 8, which shows another embodiment of the hood of the lens device of the present invention. In this embodiment, the light shield 60' and the lens barrel 31 are two separate components. In addition, the light shield 60' is connected to the lens barrel 31 and extends outward from the front edge of the lens barrel 31. Accordingly, the light shield 60' blocks the light reflected from the reflective sheet 50 and does not directly enter the lens barrel 31, thereby improving the image quality.

It should be noted that the length of the light shield 60' extending outward from the front edge of the lens barrel 31 can be adjusted according to actual usage conditions, so as to prevent unnecessary light from entering the lens barrel 31.

The foregoing descriptions are only preferred embodiments of the present invention, and are not intended to limit the scope of the patent of the present invention. Other equivalent changes using the patent spirit of the present invention should all fall within the scope of the patent of the present invention.

1: Lens device

10: Control module

11: Control circuit board

12: photosensitive element

20: Light-emitting module

21: light source circuit board

22: Light-emitting element

30: lens module

31: lens barrel

32: Lens

33: lens mount

40: Focusing lens

50: reflective sheet

60: Lens hood

61: shading section

L1, L2: light

Claims (11)

A lens device with a light shielding structure includes: a control module, including a control circuit board and a photosensitive element arranged on the control circuit board; a light emitting module, including a light source circuit board and a light source circuit board arranged on the light source circuit board A light-emitting element, the light source circuit board is electrically connected to the control circuit board; a lens module, corresponding to the photosensitive element and arranged on one side of the control circuit board, the lens module includes a lens barrel and is arranged on the lens barrel A plurality of lenses in the lens; a focusing lens arranged in front of the lens module; a reflecting sheet arranged between the lens module and the focusing lens, the reflecting sheet can reflect the light emitted by the light-emitting element to pass through Out of the focusing lens; a hood, connected to the lens barrel and extending from the front edge of the lens barrel, a shading section extending outwards, the shading section is to block the light reflected from the reflector without directly entering the lens barrel; And a housing and a cable, the control module, the light-emitting module, the lens module, the focusing lens, the reflector and the hood are installed in the housing, and one end of the cable is connected to the control circuit The plate and the other end pass through the shell. The lens device with a light-shielding structure according to claim 1, wherein the housing includes a detection base and a handle connected to the detection base, a front end of the detection base is provided with an opening, and the focusing lens is disposed on the Open the hole. The lens device with a light-shielding structure according to claim 2, wherein the detection seat includes a socket and a cover plate corresponding to the socket, the socket is connected to the handle, and the cover plate is provided with the opening And combined with the focusing lens. The lens device with a light-shielding structure according to claim 1, wherein a through hole is provided in the center of the light source circuit board, and the lens barrel is inserted through the through hole. The lens device with a light-shielding structure according to claim 1, wherein the number of the light-emitting elements is plural, and the light-emitting elements are arranged around the periphery of the through hole. The lens device with a light-shielding structure according to claim 1, wherein the light source circuit board has a plurality of screw holes, the reflecting sheet is provided with a plurality of coupling holes corresponding to the positions of the screw holes, and the reflecting sheet penetrates through the plurality of screws The combination holes and the screw holes are arranged to be fixed on the light source circuit board. The lens device with a light-shielding structure according to claim 6, wherein the reflective sheet has a first opening and a second opening opposite to each other, the first opening is adjacent to the light source circuit board, and the second opening is adjacent to the For focusing lens, the outer contour of the reflective sheet is gradually reduced from the first opening to the second opening. The lens device with a light-shielding structure according to claim 7, wherein the reflective sheet is in the shape of a cone. The lens device with a light-shielding structure according to claim 1, wherein the lens module further includes a lens mount, and the lens mount is combined with the lens barrel and fixed on the control circuit board. The lens device with a light-shielding structure according to claim 1, wherein the light-shielding hood and the lens barrel are integrally formed. The lens device with a light-shielding structure according to claim 1, wherein the light-shielding hood and the lens barrel are two separate elements.

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