KR20160142156A - Optical angle photographing device using photographing module with auto focus - Google Patents

Optical angle photographing device using photographing module with auto focus Download PDF

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Publication number
KR20160142156A
KR20160142156A KR1020150078139A KR20150078139A KR20160142156A KR 20160142156 A KR20160142156 A KR 20160142156A KR 1020150078139 A KR1020150078139 A KR 1020150078139A KR 20150078139 A KR20150078139 A KR 20150078139A KR 20160142156 A KR20160142156 A KR 20160142156A
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KR
South Korea
Prior art keywords
wide
photographing
angle
angle lens
module
Prior art date
Application number
KR1020150078139A
Other languages
Korean (ko)
Inventor
최영정
이동현
탁상준
남궁명
정재락
Original Assignee
주식회사 옵트론텍
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
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Publication date
Application filed by 주식회사 옵트론텍 filed Critical 주식회사 옵트론텍
Priority to KR1020150078139A priority Critical patent/KR20160142156A/en
Publication of KR20160142156A publication Critical patent/KR20160142156A/en

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    • GPHYSICS
    • G02OPTICS
    • G02BOPTICAL ELEMENTS, SYSTEMS, OR APPARATUS
    • G02B13/00Optical objectives specially designed for the purposes specified below
    • G02B13/04Reversed telephoto objectives
    • GPHYSICS
    • G02OPTICS
    • G02BOPTICAL ELEMENTS, SYSTEMS, OR APPARATUS
    • G02B7/00Mountings, adjusting means, or light-tight connections, for optical elements
    • G02B7/02Mountings, adjusting means, or light-tight connections, for optical elements for lenses
    • G02B7/04Mountings, adjusting means, or light-tight connections, for optical elements for lenses with mechanism for focusing or varying magnification
    • G02B7/09Mountings, adjusting means, or light-tight connections, for optical elements for lenses with mechanism for focusing or varying magnification adapted for automatic focusing or varying magnification
    • GPHYSICS
    • G03PHOTOGRAPHY; CINEMATOGRAPHY; ANALOGOUS TECHNIQUES USING WAVES OTHER THAN OPTICAL WAVES; ELECTROGRAPHY; HOLOGRAPHY
    • G03BAPPARATUS OR ARRANGEMENTS FOR TAKING PHOTOGRAPHS OR FOR PROJECTING OR VIEWING THEM; APPARATUS OR ARRANGEMENTS EMPLOYING ANALOGOUS TECHNIQUES USING WAVES OTHER THAN OPTICAL WAVES; ACCESSORIES THEREFOR
    • G03B3/00Focusing arrangements of general interest for cameras, projectors or printers
    • G03B3/10Power-operated focusing

Abstract

The present invention provides a wide-angle photographing apparatus using an auto-focus module. The auto-focus module has a wide-angle lens on a photographing module with auto-focusing capabilities and is capable of executing a wide-angle photographing operation. According to the present invention, the wide-angle photographing apparatus using the auto-focus module includes: a photographing module having an auto-focusing function; and a wide-angle lens unit which is installed on the exterior of the photographing module and provides a refracting force for enabling the photographing module to form a wide angle within a predetermined angle range. The wide-angle lens is integrated and installed to the exterior of the photographing module with the auto-focusing capabilities, thereby providing a photographing apparatus having an ultra-wide angle while using an existing photographing module manufactured in advance.

Description

TECHNICAL FIELD [0001] The present invention relates to a wide angle photographing apparatus using an autofocus photographing module,
The present invention relates to a wide angle photographing apparatus using an autofocus module, and more particularly, to a wide angle photographing apparatus using an autofocus module capable of photographing a wide angle of view by providing a wide angle lens in an autofocusable photographing module .
A camera, which is a mechanical device capable of photographing a subject using a lens, has long been used.
Generally, the camera is provided with a plurality of lenses for focusing and / or zooming, and is configured to adjust the focus by adjusting the relative distance between the plurality of lenses.
Particularly, in recent years, small-sized optical devices such as mobile communication devices such as mobile phones and digital cameras have been widely used as digital image photographing devices.
[0004] However, a camera module mounted in such a digital image pickup device is provided with various lens actuators as driving devices for zooming and auto-focusing, And the focus and magnification are adjusted through a method of moving the formed lens along the optical axis direction.
In addition, in order to clearly view a subject in an optical system of a camera module mounted on a mobile communication device that is miniaturized, the distance between a plurality of lenses and the image sensor is adjusted, or the curvature of the lens is changed, focusing function should be provided.
Accordingly, in order to realize a clear image on the image sensor, a structure in which one or more lenses are relatively moved with respect to each other is formed, and in order to realize the focusing function, as a separate drive unit, for example, a manual, step motor, piezoelectric element, Motor (Voice Coil Motor, VCM) are used.
Here, the voice coil motor (VCM) and the voice coil actuator (VCA) system are methods that focus precisely using the induction magnetic force of the permanent magnet and the coil.
Korean Patent Laid-Open Publication No. 10-2011-0073043 (entitled: Camera Module) discloses a camera module having an auto-focusing function using VCM.
1, the photographing module 10 includes a lens unit 11, a barrel 12, a VCM actuator 13, and a control unit 14. The photographing module 10 includes a lens unit 11, a barrel 12, a VCM actuator 13, A housing 14, a magnet supporting block 15, an infrared filter 16, an image sensor 17, a printed circuit board 18, and a bonding wire 19.
The barrel 12 has a function of inserting a lens unit 11 to protect the lens unit 11 and a VCM actuator 13 is attached to the barrel 12. The VCM actuator 13 has a yoke 12, (13a, 13b, 13c), a coil (13d), and a magnet (13e).
A spring 14a is provided on the inner side of the upper portion of the housing 14 in the upper transverse direction and the spring 14a provides an elastic force as the barrel 12 linearly moves in the vertical direction.
However, the conventional photographing module 10 capable of autofocusing has a problem in that it can not provide a wide viewing angle with a narrow angle of view angle of about 70 degrees.
In order to solve such a problem, a lens having a large angle of view is additionally provided in the lens section 11 to provide a wide angle of view. However, in the case of a lens having a large angle of view, the diameter of the lens increases and the weight increases.
In addition, when a lens having a large angle of view is added due to weak driving force of the VCM system, there is a problem that it is difficult to control the VCM driving unit for auto focusing, and manufacturing cost increases when the encoder system is used instead of the VCM system.
Korean Patent Laid-Open Publication No. 10-2011-0073043 (name of the invention: camera module)
It is an object of the present invention to provide a wide-angle photographing apparatus using an autofocus module capable of photographing a wide angle of view by providing a wide-angle lens in an autofocusing photographing module.
According to an aspect of the present invention, there is provided a wide angle photographing apparatus using an autofocus module, comprising: a photographing module having an auto focus adjustment function; And a wide-angle lens unit installed outside the photographing module to provide a refracting power so that the photographing module forms a view angle within a predetermined angle range.
In addition, the photographing module according to the present invention is characterized by providing an auto focus control function by a VCM driving method.
Further, the wide-angle photographing apparatus according to the present invention may further include a wide-angle lens supporting section for supporting the lens section to be fixed to the outside of the photographing module.
Further, the wide-angle lens support unit according to the present invention includes: a support body having a through-hole through which light transmitted through the wide-angle lens unit passes; A first flange provided around the through-hole of the support body to support the wide-angle lens unit to be fixed; And a second flange installed at an end of the support body so that the wide-angle lens supporting part is fixed to the photographing module and engaging with an outer surface of the photographing module.
Further, the wide-angle photographing apparatus according to the present invention further includes a wide-angle lens housing for supporting the wide-angle lens unit to be fixed to the outside of the photographing module, and for self-aligning the wide-angle lens unit to be located on the optical axis (C) .
Further, the wide-angle lens housing according to the present invention is installed and fixed to the photographing module, and is guided to move to an arbitrary position of the first housing inclined surface in which the wide-angle lens unit is housed. And a second housing which is engaged with the first housing to support the wide-angle lens unit to be fixed.
In addition, the first housing according to the present invention is formed in a symmetrical shape with respect to the optical axis (C), and has a concave shape in a direction in which the sectional shape is away from the center of the optical axis (C); And a first housing flange installed at an end of the first housing to engage with an outer surface of the photographing module so that the first housing is fixed to the photographing module.
The wide-angle photographing apparatus according to the present invention is characterized in that it comprises a wide-angle lens fixing portion for accommodating a wide-angle lens portion in which a plurality of lenses are sequentially stacked, and for supporting the wide-angle lens portion to be fixed to the outside of the photographing module .
Further, the wide-angle lens fixing unit according to the present invention is characterized in that the optical axis C of the lens is formed so as to be coaxially formed.
Further, the angle of view of the wide angle lens unit according to the present invention is in the range of 100 ° to 170 °.
The present invention is advantageous in that it is possible to provide a wide-angle photographing device that provides a wide angle of view while using a conventional photographing module as it is by providing a wide-angle lens integrally on the outside of an autofocusing photographing module.
1 is a sectional view showing a photographing module having a general autofocus function.
2 is a sectional view showing an embodiment of a wide-angle photographing apparatus using an autofocus module according to the present invention.
3 is a sectional view showing another embodiment of the wide angle photographing apparatus using the autofocus module according to the present invention.
4 is an enlarged sectional view showing a part of the configuration of the wide angle photographing apparatus using the autofocus module according to FIG.
5 is a sectional view showing still another embodiment of the wide angle photographing apparatus using the autofocus module according to the present invention.
Hereinafter, a preferred embodiment of a wide-angle photographing apparatus using the autofocus module according to the present invention will be described in detail with reference to the accompanying drawings.
(Embodiment 1)
2 is a cross-sectional view showing an embodiment of a wide-angle photographing apparatus using the autofocus module according to the present invention.
2, the wide-angle photographing apparatus 100 using the autofocus module according to the first embodiment includes a photographing module 110, a wide-angle lens unit 120, and a wide-angle lens supporting unit 130 do.
The photographing module 110 is a photographing module having an auto-focus adjusting function. The photographing module 110 performs an auto-focusing function using a VCM driving method. The photographing module 110 photographs an image having a narrow angle of view Module.
In the present embodiment, the auto-focusing function is limited to the VCM driving method. However, the present invention is not limited thereto, and all the driving methods that can operate to provide auto-focusing may be included. There will be.
The wide-angle lens unit 120 is installed outside the photographing module 110 to provide the refracting power so that the photographing module 110 forms an angle of view in the range of 100 ° to 170 °, and preferably has a negative refracting power And a Retro-Focus type lens provided.
Also, the wide-angle lens unit 120 may be formed of a lens having one to three lenses according to the range of the angle of view, or may be made of any one of synthetic resin or glass.
The wide-angle lens support unit 130 has a support body 131, a first flange 132, a second flange 133, ).
The support body 131 is formed with a through hole through which the light transmitted through the wide-angle lens unit 120 passes.
The first flange 132 is configured to support the wide angle lens unit 120 so as to be fixed to the upper portion of the photographing module 110. The first flange 132 protrudes upward in the upward direction around the through hole of the support body 131, The inner surface of the first flange 132 can be firmly fixed to the radial outer surface of the wide angle lens unit 120 through an adhesive or interference fit.
The second flange 133 supports the wide angle lens supporting part 130 to be fixed to the upper part of the photographing module 110. The second flange 133 is installed downward at the end of the supporting body 131, Such as an adhesive or an interference fit.
The wide angle lens supporting part 130 reflects the mechanical positions of the first and second flanges 132 and 133 to the same optical axis of the wide angle lens part 120 by reflecting the optical axis C of the imaging module 110 The optical axis C can be easily adjusted in the process of coupling the wide angle lens unit 120 and the wide angle lens support unit 130 to the photographing module 110. [
Therefore, by installing the wide-angle lens integrally on the outside of the photographing module 110 capable of autofocusing, it is possible to provide a photographing device having a wide angle of view and an ultra-wide angle of view while using the photographing module that is already manufactured.
(Second Embodiment)
FIG. 3 is a cross-sectional view showing another embodiment of the wide angle photographing apparatus using the autofocus module according to the present invention, and FIG. 4 is an enlarged cross-sectional view of a part of the wide angle photographing apparatus using the autofocus module shown in FIG.
3 and 4, the wide-angle photographing apparatus 100 'using the autofocus module according to the second embodiment includes a photographing module 110, a wide-angle lens unit 120', a wide-angle lens housing 140 ).
The photographing module 110 is a photographing module having an auto-focus adjusting function. The photographing module 110 performs an auto-focusing function using a VCM driving method. The photographing module 110 photographs an image having a narrow angle of view Module.
The wide-angle lens unit 120 'is provided outside the photographing module 110 to provide a refracting power so that the photographing module 110 forms an angle of view ranging from 100 ° to 170 °. Preferably, And a lens-inclined surface 121 is formed at a lower portion of the wide-angle lens portion 120 '. The lens-inclined surface 121 is formed of a synthetic resin or glass.
The lens inclined surface 121 is moved in the process of fixing the wide angle lens part 120 'to the wide angle lens housing 140 to adjust the optical axis C to be positioned at the center, And has a convex shape in which an inclined surface is formed in a direction in which the cross-sectional shape is closer to the optical axis C as a center.
The wide-angle lens housing 140 is fixed to the outside of the photographing module 110 and the wide-angle lens unit 120 'is self-aligned so as to be positioned on the optical axis C of the photographing apparatus. 141), and a second housing (142).
The first housing 141 is closely fixed to the photographing module 110 and has a first housing slope 141a for guiding the wide angle lens unit 120 'to move to an arbitrary position of the first housing 141 The first housing 141 is installed downward at the distal end of the first housing 141 so as to be fixed to the upper portion of the photographing module 110 so that the first housing 141 is adhered to the outer surface of the photographing module 110, And a first housing flange 141b fixed through a fitting engagement.
The first housing slanting surface 141a is formed symmetrically with respect to the optical axis C and has a concave shape in a cross sectional shape away from the center of the optical axis C so that the lens slanting surface of the wide angle lens portion 120 ' The optical axis of the optical axis lens unit 120 'and the optical axis of the photographing module 110 are aligned with the optical axis of the first housing slope surface 141a by guiding the wide angle lens unit 120' Ensure alignment through alignment.
The second housing 142 is configured to support the wide angle lens unit 120 'which is engaged with the first housing 141 and is seated on the first housing 141 to be fixed. The optical lens unit 120 And a fastening portion 142b is formed on the inner side of the second housing flange 142a so as to be coupled with the first housing 141 through a screw connection.
That is, the second housing 142 is pressed by the wide angle lens unit 120 'provided inside the first housing 141 in the process of engaging with the first housing 141 through the coupling part 142b The first housing 141 is moved downward and the optical axis C moves to the center so that the first housing 141 can be self-aligned.
Therefore, by installing the wide-angle lens integrally on the outside of the photographing module 110 capable of autofocusing, it is possible to provide a photographing device having a wide angle of view and an ultra-wide angle of view while using the photographing module that is already manufactured.
(Third Embodiment)
5 is a cross-sectional view showing another embodiment of the wide angle photographing apparatus using the autofocus module according to the present invention.
5, the photographing apparatus 100 "according to the third embodiment includes a photographing module 110, a wide-angle lens unit 120 ", and a wide-angle lens fixing unit 150. [
The photographing module 110 is a photographing module having an auto-focus adjusting function. The photographing module 110 performs an auto-focusing function using a VCM driving method. The photographing module 110 photographs an image having a narrow angle of view Module.
The wide angle lens unit 120 '' is installed outside the photographing module 110 to provide a refracting power so that the photographing module 110 forms an angle of view ranging from 100 ° to 170 °. The first lens 120a, the second lens 120b, and the third lens 120c are sequentially stacked, and the wide-angle lens unit 120 " forms a negative refractive power as a whole.
The first to third lenses 120a, 120b, and 120c may have various shapes such as a meniscus shape convex upward, a convex shape, and a concave shape upward in the drawing.
The wide-angle lens fixing part 150 is tightly fixed to the upper part of the tilting module 110 through an interference fit or an adhesive or the like, and a storage space is formed therein. The wide angle lens part 120 " And a fixing flange 151 is formed at an upper portion thereof to press the upper portion of the wide angle lens portion 120 '' to be fixed to the outside of the photographing module 110.
The wide-angle lens fixing part 150 includes spacers (not shown) provided between the first through third lenses 120a, 120b, and 120c, so that the first through third lenses 120a, 120b, 120c are formed on the same axis.
Therefore, by installing the wide-angle lens integrally on the outside of the photographing module 110 capable of autofocusing, it is possible to provide a photographing device having a wide angle of view and an ultra-wide angle of view while using the photographing module that is already manufactured.
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 spirit and scope of the invention as defined in the appended claims. It can be understood that
In the course of the description of the embodiments of the present invention, the thicknesses of the lines and the sizes of the components shown in the drawings may be exaggerated for clarity and convenience of explanation, , Which may vary depending on the intentions or customs of the user, the operator, and the interpretation of such terms should be based on the contents throughout this specification.
100, 100 ', 100 ": photographing apparatus 110: photographing module
120, 120 ', 120 ": wide-angle lens unit 120a:
120b: second lens 120c: third lens
121: lens slope 130: wide angle lens support
131: support body 132: first flange
133: second flange 140: wide-angle lens housing
141: first housing 141a: first housing slope surface
141b: first housing flange 142: second housing
142a: second housing flange 142b: fastening portion
150: Wide angle lens fixing portion 151: Fixed portion flange

Claims (10)

  1. An imaging module (110) having an auto focus adjustment function; And
    And a wide-angle lens unit 120, 120 ', 120 "provided outside the photographing module 110 to provide a refracting power so that the photographing module 110 forms an angle of view within a predetermined angle range. Wide angle photographing device using.
  2. The method according to claim 1,
    Wherein the photographing module (110) provides an auto focus control function by a VCM driving method.
  3. The method according to claim 1,
    The wide angle photographing apparatus according to claim 1, further comprising a wide angle lens supporting part (130) for supporting the wide angle lens part (120) to be fixed to the outside of the photographing module (110).
  4. The method of claim 3,
    The wide-angle lens support unit 130 includes a support body 131 having through-holes through which the light transmitted through the wide-angle lens unit 120 passes;
    A first flange 132 installed around the through-hole of the support body 131 to support the wide-angle lens unit 120 to be fixed; And
    And a second flange 133 provided at a distal end of the support body 131 to be coupled to an outer surface of the photographing module 110 so that the wide angle lens supporting part 130 is fixed to the photographing module 110 Angle photographing apparatus using the autofocus photographing module.
  5. The method according to claim 1,
    The wide-angle photographing apparatus supports the wide angle lens unit 120 'to be fixed to the outside of the photographing module 110, and the wide angle lens unit 120' is self-aligned to be positioned on the optical axis C of the photographing apparatus The wide angle photographing apparatus according to any one of the preceding claims, further comprising a wide angle lens housing (140).
  6. 6. The method of claim 5,
    The wide-angle lens housing 140 is fixed to the photographing module 110 and is guided to move to an arbitrary position of the first housing inclined surface 141a having the wide-angle lens portion 120 '(141); And
    And a second housing (142) for supporting the wide angle lens unit (120 ') to be fixed by being engaged with the first housing (141).
  7. The method according to claim 6,
    The first housing 141 is formed symmetrically with respect to the optical axis C and has a first housing inclined surface 141a having a concave shape in a cross sectional shape away from the center of the optical axis C; And
    And a first housing flange 141b provided at an end of the first housing 141 to be coupled to an outer surface of the photographing module 110 so that the first housing 141 is fixed to the photographing module 110 Wherein the wide angle photographing device is an automatic photographing photographing device.
  8. The method according to claim 1,
    The wide angle photographing apparatus includes a wide angle lens unit 120 "in which a plurality of lenses 120a, 120b, 120c are sequentially stacked, and the wide angle lens unit 120" is fixed to the outside of the photographing module 110 And a wide-angle lens fixing part (150) for supporting the wide angle lens.
  9. 9. The method of claim 8,
    The wide-angle lens fixing part (150) supports the optical axis (C) of the lenses (120a, 120b, 120c) to be formed on the same axis.
  10. The method according to claim 1,
    Wherein the angle of view of the wide angle lens unit (120, 120 ', 120 ") ranges from 100 ° to 170 °.
KR1020150078139A 2015-06-02 2015-06-02 Optical angle photographing device using photographing module with auto focus KR20160142156A (en)

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Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO2019199101A1 (en) * 2018-04-13 2019-10-17 엘지이노텍 주식회사 Camera module and depth map extraction method thereof

Citations (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
KR20110073043A (en) 2009-12-23 2011-06-29 엘지이노텍 주식회사 Camera module

Patent Citations (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
KR20110073043A (en) 2009-12-23 2011-06-29 엘지이노텍 주식회사 Camera module

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO2019199101A1 (en) * 2018-04-13 2019-10-17 엘지이노텍 주식회사 Camera module and depth map extraction method thereof

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