KR101672889B1 - Accessory for close-up shot using mobile phone camera - Google Patents

Accessory for close-up shot using mobile phone camera Download PDF

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Publication number
KR101672889B1
KR101672889B1 KR1020150059226A KR20150059226A KR101672889B1 KR 101672889 B1 KR101672889 B1 KR 101672889B1 KR 1020150059226 A KR1020150059226 A KR 1020150059226A KR 20150059226 A KR20150059226 A KR 20150059226A KR 101672889 B1 KR101672889 B1 KR 101672889B1
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KR
South Korea
Prior art keywords
light
lens
mobile phone
attachment mechanism
optical axis
Prior art date
Application number
KR1020150059226A
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Korean (ko)
Inventor
신재훈
김세진
Original Assignee
(주)시원광기술
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Publication date
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Priority to KR1020150059226A priority Critical patent/KR101672889B1/en
Application granted granted Critical
Publication of KR101672889B1 publication Critical patent/KR101672889B1/en

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    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04M—TELEPHONIC COMMUNICATION
    • H04M1/00—Substation equipment, e.g. for use by subscribers
    • H04M1/02—Constructional features of telephone sets
    • H04M1/0202—Portable telephone sets, e.g. cordless phones, mobile phones or bar type handsets
    • H04M1/026—Details of the structure or mounting of specific components
    • H04M1/0264—Details of the structure or mounting of specific components for a camera module assembly
    • G—PHYSICS
    • G02—OPTICS
    • G02B—OPTICAL ELEMENTS, SYSTEMS OR APPARATUS
    • G02B6/00—Light guides; Structural details of arrangements comprising light guides and other optical elements, e.g. couplings
    • G02B6/0001—Light guides; Structural details of arrangements comprising light guides and other optical elements, e.g. couplings specially adapted for lighting devices or systems
    • G03B17/568—
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04M—TELEPHONIC COMMUNICATION
    • H04M2250/00—Details of telephonic subscriber devices
    • H04M2250/52—Details of telephonic subscriber devices including functional features of a camera

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  • Physics & Mathematics (AREA)
  • General Physics & Mathematics (AREA)
  • Optics & Photonics (AREA)
  • Engineering & Computer Science (AREA)
  • Signal Processing (AREA)
  • Telephone Set Structure (AREA)
  • Accessories Of Cameras (AREA)

Abstract

A close-up imaging accessory that assists in taking close-up pictures using a camera built in a mobile phone. The accessory for mobile phone close-up photography includes a lens barrel, a lens module having at least one lens installed in the lens barrel, a lens module coupled to the lens module so as not to block the optical axis of the lens, A light guide having a light incident surface on which light emerging from the light incident surface and a light emitting surface on which light incident on the light incident surface is emitted and a lens module, And an attaching mechanism that is attached to the body. When the attachment mechanism is attached to the mobile phone so that the optical axis of the lens and the optical axis of the camera module built in the mobile phone are aligned, the light incidence surface covers at least a part of the flashlight.

Description

{Accessory for close-up shot using mobile phone camera}

BACKGROUND OF THE INVENTION 1. Field of the Invention [0001] The present invention relates to an accessory for close-up photography, which assists in taking a close-up photograph using a camera built in a cellular phone.

Most modern mobile phones have a built-in camera for video call or private image shooting. Generally, a person or a landscape is photographed by using a built-in camera of a mobile phone. However, there is a case in which a photograph is taken with a close-up shot such as photographing of a part of a plant or a fine animal, or skin or scalp .

Korean Patent Publication No. 10-0481317 or No. 10-0513156 discloses an enlargement imaging apparatus for a mobile phone for use in close-up enlargement photographing. However, the devices disclosed in the aforementioned patent publications include a complicated structure including an LED light source, promote power consumption of a mobile phone battery, and have a high manufacturing cost. In addition, it can not be used for general purpose in various mobile phones, and can be used only for a specific model of mobile phone, so that mass production can not be expected to reduce manufacturing cost.

Korean Patent Publication No. 10-0481317 Korean Patent Publication No. 10-0513156

The present invention provides an accessory for taking a close-up picture of a mobile phone capable of taking a close-up picture of a bright and bright picture quality by using a built-in camera of a mobile phone.

The present invention also provides an accessory for taking a close-up image of a mobile phone capable of taking a close-up picture of bright image quality using a camera and a flash light built in a mobile phone without a built-in light source.

The present invention also provides an accessory for mobile phone close-up photography that is attachable to all mobile phones and is easy to carry.

The lens module includes a lens barrel and at least one lens disposed in the lens barrel. The lens module is coupled to and supported by the lens module so as not to block the optical axis of the lens. A light guide having a light incident surface on which light emerging from the light emitting surface is incident and a light emitting surface on which light incident on the light incident surface is emitted, Attaching the attachment mechanism to the mobile phone such that an optical axis of the lens and an optical axis of a camera module built in the mobile phone are aligned with each other, And accessories for mobile phone close-up photography.

Wherein the attachment mechanism includes a pair of fingers that are hinge-coupled to each other and a pair of elastic biasing forceps in a direction in which one ends of the pair of fingers are in close contact with each other, The lens module may be coupled to one side end of one of the pair of fingers.

The light guide may include an inclined surface formed of a transparent material and reflecting the light incident on the light incident surface.

The inclination angle of the inclined surface may be greater than 0 ° and less than or equal to 45 °.

The inner circumferential surface of the light guide surrounds the outer circumferential surface of the barrel, the light exit surface includes a front surface facing the front and the inner circumferential surface, and the light incident surface may include a rear surface facing rearward .

Wherein the planar shape of the front surface and the rear surface is a planar ring shape defined by a pair of concentric circles centering on the optical axis of the lens and the area of the concentric circle defining the back surface is larger than the area of the concentric circle defining the front surface .

A plurality of micro bumps for promoting scattering of light incident on the light incident surface may be uniformly distributed on the light incident surface.

Wherein the lens barrel has a male screw thread pattern and a male screw thread pattern, wherein the attachment mechanism and the light guide each include a female screw thread pattern having a female screw pattern corresponding to the male screw pattern, The female screw surface of the attachment mechanism and the female contact surface of the light guide are screwed to the number or slope of the lens barrel, so that the attachment mechanism, the lens module, and the light guide can be combined.

When the mobile phone is photographed with the accessory for taking a close-up photograph of the mobile phone attached to the mobile phone and the mobile phone built-in flashlight is operated, the light of the mobile phone built-in flashlight is guided through the light guide to brighten the subject, It is possible to obtain a sharp and bright close-up image without reducing the battery consumption of the mobile phone, and it is possible to reduce the manufacturing cost because of the simple structure and less concern about operation errors and product damage.

Further, the accessory for mobile phone close-up photography of the present invention is provided as a general-purpose product applicable to all mobile phones when the radius of the light incidence surface is set to be greater than or equal to the largest interval in the interval between the camera module and the flashlight built- can do. Therefore, the product model can be simplified and the manufacturing cost can be expected to be reduced through mass production.

FIG. 1 is a perspective view of an accessory for taking a mobile phone close-up photograph according to an embodiment of the present invention, which shows a state attached to a mobile phone.
Fig. 2 is an exploded perspective view of the accessories for photographing mobile phone close-up photography of Fig. 1, Fig. 2 is a front view, and Fig. 3 is a rear view.
Fig. 4 is a cross-sectional view of the accessory for photographing the mobile phone of Fig. 1, showing the state attached to the mobile phone;

DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS Reference will now be made in detail to embodiments of the present invention, examples of which are illustrated in the accompanying drawings. The terminology used herein is a term used to properly express the preferred embodiment of the present invention, which may vary depending on the intention of the user or operator or the custom of the field to which the present invention belongs. Therefore, the definitions of these terms should be based on the contents throughout this specification.

Fig. 1 is a perspective view of an accessory for mobile phone close-up photography according to an embodiment of the present invention, and Fig. 2 is an exploded perspective view of the accessory for mobile phone photography of Fig. 1, Fig. 2 is a front view, Fig. 3 is a rear view, and Fig. 4 is a cross-sectional view of an accessory for taking a mobile phone of Fig. 1 to 4, an accessory 10 for taking a close-up image of a mobile phone according to an embodiment of the present invention may include an apparatus 10 for attaching to a mobile phone 1 and allowing close-up shot shooting through a built- Which includes an attachment mechanism 11, a lens module 40, and a light guide 30. Typically, the mobile phone 1 has a substantially rectangular shape and is recognized as a smart phone in which a display panel is disposed in most areas on one side, but is not necessarily limited to a smart phone.

The attachment mechanism 11 supports the lens module 40 and is detachably attached to the cellular phone 1. [ The attachment mechanism 11 has a grip with first and second fingers 12, 18 to which a hinge 22 is coupled. A through hole 13 is formed on one side of the first finger 12 and an inner peripheral surface 14 of the through hole 13 is a female threaded surface formed with a female screw thread pattern so that the lens module 40 is coupled . A compression spring 24 is interposed between the other ends of the first and second fingers 12 and 18 so that one side ends of the first and second fingers 12 and 18 are elastically biased bias.

The first and second fingers 12 and 18 are held at the other ends of the first and second fingers 12 and 18 with a hand so that the interval between the opposite ends of the first and second fingers 12 and 18 is narrowed It opens. When one hand side end portions are dislodged by the elastic restoring force of the compression spring 24 via the cell phone 1 between the one side end portions and the hands which have pinched the other side end portions are released, The attachment mechanism 11 is attached to the cellular phone 1. [ When the other ends of the first and second fingers 12 and 18 are gripped by hand, the one end portions are separated from the cellular phone 1 so that the attachment mechanism 11 is easily separated from the cellular phone 1. [

Non-slip pads (14, 19) are fixedly coupled to portions of the first and second fingers (12, 18) which contact one end of the mobile phone (1). The non-slip pads 14 and 19 slide when the first and second fingers 12 and 18 are brought into close contact with the cellular phone 1 so that the attachment mechanism 11 is inadvertently detached from the cellular phone 1, Thereby preventing the alignment between the module 40 and the built-in camera module 4 from being disturbed. In addition, the first and second fingers 12 and 18 function to buffer the surface of the cellular phone 1 so as not to scratch it.

The lens module 40 includes a lens barrel 41, a plurality of lenses 50, 51, 52 inserted in a line in the through-hole of the lens barrel 41, And a retainer (46) for securing in the through hole of the through hole (41). The retainer 46 is a ring-shaped member, which is a male threaded surface 47 having an outer circumferential surface formed with a male screw thread pattern. The inner peripheral surface of the rear end of the lens barrel 41 is an internally threaded surface 43 formed with a female thread pattern corresponding to the male thread pattern of the male threaded surface 47. The male threaded surface 47 of the retainer 46 is provided at the rear end Threaded surface 43 so that the retainer 46 is detachably coupled to the lens barrel 41. As shown in Fig. A first spacer 55 and a second spacer 56 in the form of a ring are interposed between the lenses 50, 51 and 52 in the through-hole of the lens barrel 41, To be accurately maintained.

The outer peripheral surface of the rear end of the lens barrel 41 is a male or female face 42 having a male thread pattern. The male thread 42 of the lens barrel 41 is threadedly engaged with the female threaded face 14 of the first finger 12 and the lens module 40 is detachably coupled to the attaching mechanism 11. [ The length of the male threaded surface 42 of the lens barrel 41 is approximately twice as long as the length of the female threaded surface 14 of the first finger 12, And a part of the sloped surface 42 is used for screwing the light guide 30.

The light guide 30 is coupled to and supported by the lens module 40 so as not to block the optical axis AX of the lenses 50, 51 and 52. The light guide 30 is provided with a through hole 31 at the center so as to fit the lens barrel 41, And is provided with a light incident surface 33, light exit surfaces 35 and 36, and an inclined surface 37. The material of the light guide 30 may be, for example, acrylic resin or glass, but this is merely an example, and other types of transparent synthetic resin may be applied.

The light incident surface (33) includes a back surface facing rearward from the light guide (30). Light emitted from a flash light 8 built in the mobile phone 1 is incident through the light incident surface 33 (see arrow LI). The light exit surfaces 35 and 36 are surfaces on which light (light) LI incident on the light incident surface 33 is emitted (see arrows LO1 and LO2). The light exit surfaces 35 and 36 include an inner circumferential surface 35 of the light guide 30 surrounding the outer peripheral surface of the barrel 41 and a front surface 36 facing forward.

The inclined surface 37 is an outer circumferential surface of the light guide 30 provided between the front surface 36 and the back surface 33. The inclined surface 37 is a surface on which the incident light LI incident into the light guide 30 through the back surface 33 is totally reflected Reflection). The incident light LI does not exit through the inclined surface 37 so that the incident light LI can be emitted to the outgoing lights LO1 and LO2 through the light exit surfaces 35 and 36 without loss of light.

In order for the incident light LI to be totally reflected on the inclined surface 37, the incidence angle of the light incident on the inclined surface 37 in the light guide 30 must be greater than the critical angle. In consideration of this, the inclination angle AN of the inclined surface 37 is greater than 0 DEG and smaller than or equal to 45 DEG. The inclination angle AN is defined as an angle formed by the optical axis AX and a slanting line TL which is in contact with the inclined surface 37 and crosses the optical axis AX.

The light guide 30 is a substantially conical member having a through hole 31 formed at the center thereof and has an inner peripheral surface 35 of the through hole 31 and a front surface 36 around the front inlet of the through hole 31, And a light incidence surface is provided on the back surface 33 around the rear entrance of the through hole 31. [ The planar shape of the back surface 33 and the front surface 36 is a planar ring shape defined by a pair of concentric circles centered on the optical axis AX. Specifically, the pair of concentric circles defining the back surface 33 is a concentric circle having a first outer diameter OD1 as a diameter and a small concentric circle having a first inner diameter ID1 as a diameter, The limited pair of concentric circles is a small concentric circle having a diameter of the second outer diameter OD2 and a small concentric circle having a diameter of the second inner diameter ID2.

The first outer diameter OD1 of the back surface 33 is greater than the second outer diameter OD2 of the front surface 36 and the first inner diameter ID1 of the back surface 33 is greater than the second inner diameter ID2 of the front surface 36 The area of the concentric circle defining the back surface 33 is larger than the area of the concentric circle defining the front surface 36. Therefore, As described above, there is no light loss of the incident light LI through the inclined surface 37. [ The incident light LI through the back surface 33 which is the light incidence surface is emitted to the object (not shown) and its vicinity which are taken close-up through the inner circumferential surface 35 and the front surface 36 which are the light outgoing surface. However, the light guide 30 shown in FIGS. 1 to 4 is a conical member having a through hole 31 at the center, but this is merely an example, and the shape of the light guide of the present invention is not limited thereto.

A plurality of micro bumps 34 are evenly distributed on the light incident surface 33. The diameter of the fine protrusions 34 is in the range of tens to hundreds of micrometers. The plurality of fine protrusions 34 promote scattering of the incident light LI incident on the light incident surface 33 and cause the incident light LI generated from the built-in flashlight 8 of the cellular phone 1 to enter the light incident The light is uniformly emitted through the entire area of the light exit surface 36 when it is emitted through the light guide 30 even if it is incident on a part of the surface 33. [ The plurality of fine protrusions 34 can be formed, for example, by irradiating the light incident surface 33 with a laser or etching with an etching solution. Alternatively, a film in which a plurality of fine protrusions 34 are distributed may be formed by adhering to a light incident surface 33.

The inner peripheral surface of the rear end of the through hole 31 of the light guide 30 is a female thread surface 32 provided with a female thread pattern corresponding to the male thread pattern on the outer peripheral surface of the barrel 41 described above. The female screw surface 32 is screwed into a part of the extra number of sloped surfaces 42 remaining without being screwed to the first finger female thread surface 14 of the lens barrel 42 or the sloped surface 42, (Not shown).

The attachment mechanism 11 is assembled with the lens module 40 and the light guide 30 so that the optical axis of the lens optical axis AX and the optical axis of the camera module 4 are aligned with each other, , The light incident surface 33 of the light guide 30 covers at least a part of the cellular phone built-in flashlight 8. When the flashlight 8 is operated, the light of the flashlight 8 is projected onto the light exit surfaces 35 and 36 through the light guide 30 to brightly illuminate the subject, It is possible to obtain a sharp and bright close-up image without providing a separate light source, and since a light source is not separately provided, the mobile phone battery consumption is not consumed, so that the battery consumption of the mobile phone can be reduced.

Further, since the attachment mechanism 11, the lens module 40, and the light guide 30 are fastened by a female screw pattern and a male screw pattern formed on the inner circumferential surface or the outer circumferential surface thereof, a fastening member such as a screw is not required separately The number of parts is small, the design can be simple and reliable, and the product can be easily miniaturized. In addition, it is not detachably coupled by an adhesive or the like, so that each part can be separated and easily repaired.

While the present invention has been particularly shown and described with reference to exemplary embodiments thereof, it will be understood by those skilled in the art that various changes and modifications may be made without departing from the scope of the present invention. Therefore, the true scope of protection of the present invention should be defined only by the appended claims.

10: Accessories for mobile phone close-up photography 11: Attachment mechanism
12, 18: first and second fingers 30: light guide
33: light incident face 35, 36: light emitting face
37: slope 40: lens module
41: barrel 50, 51, 52: lens

Claims (8)

A lens module having a lens barrel and at least one lens disposed inside the lens barrel;
A light incident surface on which light emitted from a flash light built in a mobile phone is incident and which is supported by the lens module so as not to block the optical axis of the lens, A light guide having a light exit surface through which the emitted light is emitted; And
And an attachment mechanism for supporting the lens module and detachably attached to the mobile phone,
When the attachment mechanism is attached to the mobile phone so that the optical axis of the lens and the optical axis of the camera module built in the mobile phone are aligned, the light incident surface is arranged to cover at least a part of the flashlight,
The light guide is made of a light transmitting material and is arranged in a conical shape in which a central portion is a cylindrical shape so that the inner peripheral surface surrounds the entire outer peripheral surface of the barrel and the outer peripheral surface becomes narrower from the light incident surface to the light exit surface, And a slanting surface for reflecting the light emitted from the light source. The method according to claim 1,
Wherein the attachment mechanism includes a pair of fingers that are hinge-coupled to each other and a pair of elastic biasing forceps in a direction in which one ends of the pair of fingers are in close contact with each other, And the lens module is coupled to one end of one of the pair of fingers. delete The method according to claim 1,
Wherein the inclination angle of the inclined surface is greater than 0 DEG and less than or equal to 45 DEG. The method according to claim 1,
Characterized in that the light exit surface includes a forward facing front surface and the inner circumferential surface, and the light incidence surface includes a rear surface facing rearward. 6. The method of claim 5,
The planar shape of the front surface and the back surface is a planar ring shape defined by a pair of concentric circles centered on the optical axis of the lens,
Wherein the area of the concentric circle defining the back surface is larger than the area of the concentric circle defining the front surface. The method according to claim 1,
Wherein the light incidence surface is uniformly distributed with a plurality of micro bumps that promote scattering of light incident on the light incidence surface. The method according to claim 1,
Wherein the lens barrel has a male screw thread pattern and a male screw thread pattern, and the attachment mechanism and the light guide each include a female screw thread pattern having a female screw pattern corresponding to the male screw pattern,
Wherein the female screw surface of the attachment mechanism and the female contact surface of the light guide are threadedly coupled to the male or female threads of the lens barrel so that the attachment mechanism, the lens module, and the light guide are engaged.
KR1020150059226A 2015-04-27 2015-04-27 Accessory for close-up shot using mobile phone camera KR101672889B1 (en)

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Cited By (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
KR20180057171A (en) * 2016-11-22 2018-05-30 삼성전자주식회사 Apparatus for omnidirectional image photographing and electronic devcie including the same
KR101901569B1 (en) * 2018-05-10 2018-09-27 주식회사 에프앤디파트너스 Light guide device for photometric imaging
KR101901573B1 (en) * 2018-05-10 2018-09-27 주식회사 에프앤디파트너스 Light guide device for photometric imaging
KR20180109420A (en) * 2017-03-28 2018-10-08 (주)시원광기술 Illumination guide, lens module with the same, and device for observing subject using mobile phone camera with the lens module
CN109870868A (en) * 2019-04-04 2019-06-11 广东思锐光学股份有限公司 Lens connecting device
WO2022147928A1 (en) * 2021-01-08 2022-07-14 肯维捷斯（武汉）科技有限公司 Light guide structure with multiple reflection profiles, and ultra-micro imaging module comprising same
WO2022147926A1 (en) * 2021-01-08 2022-07-14 肯维捷斯（武汉）科技有限公司 Stray light shielding structure, and super-macro imaging module comprising same

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KR101480249B1 (en) * 2013-09-24 2015-02-06 주식회사 지오인터내셔널 Unit for magnifying pick up image

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KR100481317B1 (en) 2003-11-07 2005-04-14 아람휴비스(주) Extension image system for cellular telephone
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Publication number Priority date Publication date Assignee Title
KR20180057171A (en) * 2016-11-22 2018-05-30 삼성전자주식회사 Apparatus for omnidirectional image photographing and electronic devcie including the same
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KR20180109420A (en) * 2017-03-28 2018-10-08 (주)시원광기술 Illumination guide, lens module with the same, and device for observing subject using mobile phone camera with the lens module
KR102047540B1 (en) * 2017-03-28 2019-11-21 (주)시원광기술 Device for observing subject
KR101901569B1 (en) * 2018-05-10 2018-09-27 주식회사 에프앤디파트너스 Light guide device for photometric imaging
KR101901573B1 (en) * 2018-05-10 2018-09-27 주식회사 에프앤디파트너스 Light guide device for photometric imaging
CN109870868A (en) * 2019-04-04 2019-06-11 广东思锐光学股份有限公司 Lens connecting device
CN109870868B (en) * 2019-04-04 2024-04-16 广东思锐光学股份有限公司 Lens connecting device
WO2022147928A1 (en) * 2021-01-08 2022-07-14 肯维捷斯（武汉）科技有限公司 Light guide structure with multiple reflection profiles, and ultra-micro imaging module comprising same
WO2022147926A1 (en) * 2021-01-08 2022-07-14 肯维捷斯（武汉）科技有限公司 Stray light shielding structure, and super-macro imaging module comprising same

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