WO2015174137A1 - カメラモジュールおよび端末装置 - Google Patents
カメラモジュールおよび端末装置 Download PDFInfo
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- WO2015174137A1 WO2015174137A1 PCT/JP2015/058060 JP2015058060W WO2015174137A1 WO 2015174137 A1 WO2015174137 A1 WO 2015174137A1 JP 2015058060 W JP2015058060 W JP 2015058060W WO 2015174137 A1 WO2015174137 A1 WO 2015174137A1
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- WIPO (PCT)
- Prior art keywords
- camera module
- camera
- lens
- holding mechanism
- lens unit
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- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04N—PICTORIAL COMMUNICATION, e.g. TELEVISION
- H04N23/00—Cameras or camera modules comprising electronic image sensors; Control thereof
- H04N23/57—Mechanical or electrical details of cameras or camera modules specially adapted for being embedded in other devices
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- G—PHYSICS
- G02—OPTICS
- G02B—OPTICAL ELEMENTS, SYSTEMS OR APPARATUS
- G02B7/00—Mountings, adjusting means, or light-tight connections, for optical elements
- G02B7/02—Mountings, adjusting means, or light-tight connections, for optical elements for lenses
- G02B7/04—Mountings, adjusting means, or light-tight connections, for optical elements for lenses with mechanism for focusing or varying magnification
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- G—PHYSICS
- G02—OPTICS
- G02B—OPTICAL ELEMENTS, SYSTEMS OR APPARATUS
- G02B7/00—Mountings, adjusting means, or light-tight connections, for optical elements
- G02B7/02—Mountings, adjusting means, or light-tight connections, for optical elements for lenses
- G02B7/04—Mountings, adjusting means, or light-tight connections, for optical elements for lenses with mechanism for focusing or varying magnification
- G02B7/08—Mountings, adjusting means, or light-tight connections, for optical elements for lenses with mechanism for focusing or varying magnification adapted to co-operate with a remote control mechanism
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- G—PHYSICS
- G03—PHOTOGRAPHY; CINEMATOGRAPHY; ANALOGOUS TECHNIQUES USING WAVES OTHER THAN OPTICAL WAVES; ELECTROGRAPHY; HOLOGRAPHY
- G03B—APPARATUS 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
- G03B17/00—Details of cameras or camera bodies; Accessories therefor
- G03B17/02—Bodies
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- G—PHYSICS
- G03—PHOTOGRAPHY; CINEMATOGRAPHY; ANALOGOUS TECHNIQUES USING WAVES OTHER THAN OPTICAL WAVES; ELECTROGRAPHY; HOLOGRAPHY
- G03B—APPARATUS 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
- G03B17/00—Details of cameras or camera bodies; Accessories therefor
- G03B17/02—Bodies
- G03B17/12—Bodies with means for supporting objectives, supplementary lenses, filters, masks, or turrets
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- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04N—PICTORIAL COMMUNICATION, e.g. TELEVISION
- H04N23/00—Cameras or camera modules comprising electronic image sensors; Control thereof
- H04N23/50—Constructional details
- H04N23/51—Housings
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- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04N—PICTORIAL COMMUNICATION, e.g. TELEVISION
- H04N23/00—Cameras or camera modules comprising electronic image sensors; Control thereof
- H04N23/50—Constructional details
- H04N23/54—Mounting of pick-up tubes, electronic image sensors, deviation or focusing coils
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- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04N—PICTORIAL COMMUNICATION, e.g. TELEVISION
- H04N23/00—Cameras or camera modules comprising electronic image sensors; Control thereof
- H04N23/50—Constructional details
- H04N23/55—Optical parts specially adapted for electronic image sensors; Mounting thereof
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- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04N—PICTORIAL COMMUNICATION, e.g. TELEVISION
- H04N23/00—Cameras or camera modules comprising electronic image sensors; Control thereof
- H04N23/50—Constructional details
- H04N23/52—Elements optimising image sensor operation, e.g. for electromagnetic interference [EMI] protection or temperature control by heat transfer or cooling elements
Definitions
- the present invention relates to a camera module including an image sensor that converts an optical signal received through a lens unit into an electric signal, and a terminal device including the camera module.
- the total optical length necessary to satisfy the desired angle of view and effective image circle diameter is determined to some extent, and the module height tends to increase as the number of pixels increases.
- an aperture stop is installed on the most object side or between the first lens and the second lens as in the technique described in Patent Document 3 in order to shorten the optical total length.
- Patent Document 1 There is a technique disclosed in Patent Document 1 as an example of a conventional technique for shortening the optical total length.
- a mechanical shutter is provided on the top surface of the lens unit, and a protruding portion formed at the tip of the lens is accommodated in a recess formed on the back surface of the mechanical shutter.
- Japanese Patent Publication “JP 2009-288327 A Japanese Patent Publication “Japanese Patent Laid-Open No. 2008-52196 (published March 6, 2008)” Japanese Patent Publication “Japanese Laid-Open Patent Publication No. 2014-29547 (Released on February 13, 2014)”
- the conventional technology as described above has a problem in that the number of pixels is increased and the size of the camera module is increased, while the terminal device is in an incompatible situation where a reduction in weight and thickness is required.
- the mechanical shutter is disposed on the shoulder of the actuator.
- the mechanical shutter is not necessary. This is because the transition from CCD (Charge Coupling Device) to CMOS (Complementary Metal Oxide Semiconductor) has progressed for solid-state imaging devices, and the problem of smear that has been a concern with CCD has been eliminated. For this reason, in the future, a technique for further reducing the housing height of the camera module inside the terminal for the part excluding the mechanical shutter is desired.
- the present invention has been made in view of the above problems, and an object thereof is to provide a camera module capable of reducing the housing height of the camera module inside the terminal.
- a camera module is a camera module including an imaging device that converts an optical signal received through a lens unit into an electrical signal, and the camera module includes: A camera window holding mechanism for holding the camera window is provided on the shoulder, and an opening is formed in a central portion of the camera window holding mechanism, and an objective side of the lens unit is formed inside the opening. A part of the lens is housed.
- FIGS. 1 to 6 Embodiments of the present invention will be described with reference to FIGS. 1 to 6 as follows.
- components having the same functions as those described in the specific embodiment may be denoted by the same reference numerals and description thereof may be omitted.
- FIG. 1 is a cross-sectional view showing the structure of a camera module 10a according to Embodiment 1 of the present invention.
- the camera module 10a is a camera module that includes a sensor (imaging device) 7 that converts an optical signal received through the lens unit 4a into an electrical signal.
- the camera module 10a includes an actuator 1, a camera window holding mechanism 2, a terminal camera window (camera window) 3, a lens unit 4a, a lens barrel 5a, a substrate 6, a sensor 7, a cover glass holding mechanism 8, A cover glass 9 and a mechanism system 11 are provided.
- substrate 6, the sensor 7, the cover glass 9, the lens unit 4a, and the terminal camera window 3 are each arrange
- the actuator 1 drives the lens unit 4a in the optical axis direction via the mechanism system 11.
- the mechanism system 11 includes a drive coil and a magnet, and drives the lens unit 4a in the optical axis direction by an electromagnetic force generated by passing a current through the drive coil in a magnetic field formed by the magnet.
- the driving of the lens unit 4a in the optical axis direction can be controlled. Thereby, an autofocus (AF) function can be realized.
- AF autofocus
- the actuator 1 (and the mechanism system 11) described above is a VCM (Voice Coil Motor: voice coil motor) type actuator.
- VCM Voice Coil Motor: voice coil motor
- the actuator 1 is not limited to the VCM type.
- various types of actuators such as a type using a stepping motor and a type using a piezoelectric element can be applied.
- the camera window holding mechanism 2 includes a spacer and a buffer material, and holds the terminal camera window 3.
- the terminal camera window 3 is made of tempered glass.
- the camera window holding mechanism 2 of the present embodiment is disposed on the shoulder of the camera module 10 a, more specifically on the shoulder of the actuator 1.
- the camera module 10a accommodated in the smart phone 20 compactly is realizable, ensuring the installation space of the camera window holding mechanism 2.
- FIG. When the actuator 1 (and the mechanism system 11) is used for realizing the AF function as in the present embodiment, a margin for the extension of the lens unit 4a is provided between the terminal camera window 3 and the lens unit 4a. It is necessary to provide.
- the lens unit 4a is composed of a plurality of lenses.
- FIG. 1 shows a state where the lens unit 4a is composed of three lenses.
- the number of lenses constituting the lens unit 4a is not limited to three.
- An opening H is formed at the center of the camera window holding mechanism 2 of the camera module 10a shown in FIG. 1, and a part of the objective lens of the lens unit 4a is accommodated inside the opening H. Yes.
- a part of the objective lens of the lens unit 104 is not accommodated in the opening H of the camera window holding mechanism 102.
- the camera module 10 a of the present embodiment is equivalent to the smartphone 20 corresponding to the part of the objective lens of the lens unit 4 a housed in the opening H of the camera window holding mechanism 2.
- the accommodation height of the camera module 10a inside can be reduced.
- the lens barrel 5a is a housing in which the plurality of lenses described above are assembled.
- the lens barrel 5 a is driven in the optical axis direction together with the lens unit 4 a by the actuator 1 via the mechanism system 11.
- the sensor 7 is an image sensor that converts an optical signal received through the lens unit 4a into an electrical signal, and is configured by a CMOS in this embodiment. When a mechanical shutter is used, the sensor 7 may use a CCD instead of the CMOS.
- the sensor 7 is fixed on the substrate 6 by wire bonding.
- the substrate 6 of the present embodiment shows a wire bond type, but the same effect can be obtained even with a flip chip or the like.
- the cover glass 9 (Cover glass holding mechanism 8, cover glass 9) Shooting light transmitted by the lens unit 4a is incident on the cover glass 9 (mainly IR (Infrared) cut glass).
- the cover glass 9 has a transmission characteristic of transmitting light having a predetermined wavelength and blocking light having other wavelengths (mainly infrared rays).
- the cover glass holding mechanism 8 holds the cover glass 9.
- the camera module 10a of the present embodiment has the camera window holding mechanism 2 installed on the shoulder of the actuator 1, and houses a part of the objective lens of the lens unit 4a inside the opening H (lens).
- the housing height inside the smartphone 20 is reduced by projecting a part of the objective lens of the unit 4a into the opening H).
- the housing height can be lowered. Specifically, the value of the distance c can be reduced while the distance a and the distance b shown in FIG. 1 are kept at the same value.
- the distance a is the distance from the top (or top surface) of the lens barrel 5a to the image plane, and usually takes a constant value.
- the distance b is a distance from the top surface of the cover glass 9 to the image plane, and is preferably a certain value or more.
- the distance c is a distance from the inside of the terminal camera window 3 to the bottom surface of the camera module 10 a and corresponds to the size of the camera storage space inside the smartphone 20.
- FIG. 2 is a cross-sectional view showing the structure of a camera module 10b according to Embodiment 2 of the present invention.
- the lens on the objective side of the lens unit 4b has a smaller diameter than other lenses, and the wall surface of the opening H of the camera window holding mechanism 2 (the receiving portion of the camera window holding mechanism 2). ) Differs from the camera module 10a described above in that it is close to the edge K of the lens on the objective side of the lens unit 4b.
- Patent Document 2 discloses a configuration in which an actuator is accommodated in a small-diameter portion by utilizing a difference in lens effective diameter to reduce the size.
- the camera window holding mechanism 2 is packed in a space that has been reduced in diameter, and the opening window size (the size of the opening H) is reduced.
- the holding area ratio of the camera window holding mechanism 2 to the terminal camera window 3 is increased by reducing the size of the opening H (opening window size). It is possible to improve the strength and reduce the thickness by improving the strength.
- the diameter of the tip of the front aperture lens barrel 5b is also reduced along with the reduction of the diameter of the objective lens of the lens unit 4b.
- the effective radius of the first lens L1 and the second lens L2 is 1.44 mm at the maximum
- the fifth lens L5 has the maximum lens diameter
- the effective radius is 3.15 mm.
- the thickness of the edge portion and the lens barrel is constant, and the diameter can be reduced by the difference in effective diameter, in this case, the diameter of the tip portion of the lens barrel 4b is reduced by about ⁇ 3.42 mm.
- FIG. 3 is a cross-sectional view showing the structure of a camera module 10c according to Embodiment 3 of the present invention.
- the camera with respect to the non-rotationally symmetric actuators 1L and 1R (in the figure, the mechanism system 11L exists only on the left side of the paper surface and the mechanism system does not exist on the right side).
- the camera window holding mechanism 2R is arranged with partially different thicknesses in the optical axis direction of the window holding mechanism.
- a portion present on the right side with respect to the paper surface is referred to as a camera window holding mechanism 2R, and a portion present on the left side is referred to as a camera window holding mechanism 2L.
- the thickness of the camera window holding mechanism 2R in the optical axis direction is larger than the thickness of the camera window holding mechanism 2L.
- the camera module 10c of the present embodiment differs from the camera module 10a described above in that the height in the optical axis direction of the actuator is different between the right side and the left side with respect to the paper surface.
- the portion present on the right side with respect to the paper surface is referred to as actuator 1R
- the portion present on the left side is referred to as actuator 1L.
- the height of the actuator 1R in the optical axis direction is lower than the height of the actuator 1L in the optical axis direction.
- the space between the position (actuator 1R) where the height of the actuator in the optical axis direction of the actuator is lower than other portions and the terminal camera window 3 is the position of the camera window holding mechanism. It is filled with a portion (camera window holding mechanism 2R) whose thickness along the optical axis direction is thicker than other portions. Thereby, a larger space for accommodating the camera window holding mechanism can be secured, and the thickness along the optical axis direction of the camera window holding mechanism 2R accommodated in the space is thicker than other portions (buffer material). The impact resistance can be improved.
- FIG. 4 is a cross-sectional view showing the structure of a camera module 10d according to Embodiment 4 of the present invention.
- the lens on the objective side of the lens unit 4b has a smaller diameter than the other lenses, and the wall surface of the opening H of the camera window holding mechanism 2 is It differs from the camera module 10a described above in that it is close to the edge K of the objective lens of the lens unit 4b.
- the size of the opening H is reduced, so that the holding area ratio of the camera window holding mechanism 2 to the terminal camera window 3 is increased, and a simple appearance, improvement in strength, and reduction in thickness due to improvement in strength are possible. .
- the camera module 10d of the present embodiment is different from the camera module 10a in that the above-described mechanism system does not exist. For this reason, in the present embodiment, it is not necessary to consider the operation of the objective lens of the lens unit 4b for AF adjustment, and the objective lens of the lens unit 4b is placed inside the opening H up to the limit of the mounting margin. It protrudes (closer to the inside of the terminal camera window 3), enabling further low space storage.
- the objective lens of the lens unit 4b can be brought closer to the inside of the terminal camera window 3.
- the accommodation height of the camera module 10d in the smartphone 20 can be reduced as compared with a camera module in which the objective lens of the lens unit cannot be brought close to the camera window by using the AF function.
- the diameter of the tip of the front aperture lens barrel 5b is also reduced along with the reduction in the diameter of the lens on the objective side of the lens unit 4b.
- FIG. 5 is an external view showing the back side of the smartphone 20 according to the fifth embodiment of the present invention.
- the smartphone 20 of this embodiment is configured to include any of the camera modules 10a to 10d of Embodiments 1 to 4 described above on the back side of the housing.
- the smartphone 20 of the present embodiment since the housing height of the camera modules 10a to 10d inside the smartphone 20 can be reduced, the smartphone 20 can be thinned.
- the camera modules (10a to 10d) are camera modules including an image sensor (sensor 7) that converts an optical signal received through the lens unit (4a, 4b) into an electrical signal.
- the camera module has a camera window holding mechanism (2, 2L, 2R) for holding the camera window (terminal camera window 3) on the shoulder of the camera module, and an opening ( H) is formed, and a part of the objective lens of the lens unit is accommodated in the opening.
- a part of the objective lens of the lens unit is housed inside the opening of the camera window holding mechanism. Therefore, the housing height of the camera module inside the terminal can be reduced as compared with a camera module in which a part of the objective lens of the lens unit is not housed inside the opening of the camera window holding mechanism.
- a camera module according to an aspect 2 of the present invention includes the actuator (1, 1L) for driving the lens unit in the optical axis direction in the aspect 1, and the camera window holding mechanism is provided on the shoulder of the actuator. It may be arranged above. According to the above configuration, by arranging the camera window holding mechanism on the shoulder of the actuator, it is possible to realize a camera module that is compactly housed inside the terminal while securing the installation space for the camera window holding mechanism.
- the camera module according to aspect 3 of the present invention is the camera module according to aspect 1 or 2, wherein the lens on the objective side of the lens unit has a smaller diameter than other lenses, and the wall surface of the opening of the camera window holding mechanism is The lens unit may be close to the edge of the lens on the objective side. According to the above configuration, since the size of the opening is reduced, the ratio of the holding area of the camera window holding mechanism to the camera window is increased, and a simple appearance, improvement in strength, and reduction in thickness due to improvement in strength are possible.
- the lens on the objective side of the lens unit may be close to the camera window. According to the above configuration, since the lens on the objective side of the lens unit is close to the camera window, the camera module inside the terminal is compared with the camera module in which the lens on the objective side of the lens unit is not close to the camera window. The housing height can be reduced.
- a camera module according to aspect 5 of the present invention is the camera window holding mechanism according to aspect 2, wherein a portion between the height of the actuator in the optical axis direction is lower than the other part and the camera window. It may be filled with the part where the thickness along the optical axis direction is thicker than other parts. According to the above configuration, a larger space for accommodating the camera window holding mechanism can be secured, and the thickness along the optical axis direction of the camera window holding mechanism accommodated in the space is thicker than the other parts. Impact resistance can be improved.
- the terminal device may include the camera module according to any one of aspects 1 to 5. According to the above configuration, since the housing height of the camera module inside the terminal can be reduced, the terminal device can be thinned.
- the camera module according to one embodiment of the present invention may have a configuration in which the terminal camera window holding portion is provided on the module shoulder and the lens is protruded. According to the above configuration, a camera module having a necessary camera window holding mechanism and having an equal optical length restriction can be accommodated in the terminal in a compact manner.
- the camera module according to another aspect of the present invention may have a configuration in which a terminal camera window holding portion is provided on the actuator shoulder and the lens is protruded. According to the above configuration, by accommodating the camera window holding mechanism in the upper shoulder portion of the actuator, it is possible to realize a camera module that is compactly accommodated in the terminal while securing a necessary installation space for the camera window holding mechanism. .
- a camera module has a lens configuration in which a front aperture or a lens aperture is set between the first and second lenses, the lens object side is reduced in diameter, and the receiving portion of the camera window holding mechanism is a module.
- a configuration close to the inside may be used.
- both specifications with and without an actuator may be included. According to the above configuration, since the window opening size is reduced, the holding area ratio is increased, and it is possible to reduce the thickness by simple appearance, strength UP, and strength UP.
- the camera module according to still another aspect of the present invention may have a configuration in which a holding mechanism is partially arranged with respect to a non-rotationally symmetric actuator. According to the above configuration, the holding member space is ensured, and the shock resistance is improved because the thickness of the cushioning material is increased.
- the present invention can be suitably used for terminal devices such as smartphones, mobile phones, tablet PCs (Personal Computers), and camera modules mounted on the terminal devices.
- terminal devices such as smartphones, mobile phones, tablet PCs (Personal Computers), and camera modules mounted on the terminal devices.
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Abstract
Description
図1は、本発明の実施形態1に係るカメラモジュール10aの構造を示す断面図である。カメラモジュール10aは、レンズユニット4aを介して受光した光信号を電気信号に変換するセンサ(撮像素子)7を備えたカメラモジュールである。同図に示すように、カメラモジュール10aは、アクチュエータ1、カメラ窓保持機構2、端末カメラ窓(カメラ窓)3、レンズユニット4a、レンズバレル5a、基板6、センサ7、カバーガラス保持機構8、カバーガラス9、および機構系11を備える。また、本実施形態のカメラモジュール10aでは、基板6、センサ7、カバーガラス9、レンズユニット4a、および端末カメラ窓3のそれぞれがこの順で紙面に対して上下方向に沿って配置されている。
アクチュエータ1は、機構系11を介してレンズユニット4aを光軸方向に駆動するものである。また、機構系11は、駆動コイルおよびマグネットを備えており、マグネットによって形成される磁界中の駆動コイルに電流を流すことで発生する電磁力によって、レンズユニット4aを光軸方向に駆動する。上記の駆動コイルに流す電流を制御することにより、レンズユニット4aの光軸方向の駆動を制御することができる。これにより、オートフォーカス(AF)機能を実現することができる。
カメラ窓保持機構2は、スペーサおよび緩衝材を含み、端末カメラ窓3を保持する。端末カメラ窓3は、強化ガラスで構成されており、この端末カメラ窓3を設けることにより、後述するスマートフォン(端末装置)20の筐体の内部への塵埃や水分の浸入を防ぐことができる。図1に示すように、本実施形態のカメラ窓保持機構2は、カメラモジュール10aの肩部、より具体的には、アクチュエータ1の肩上に配置されている。これにより、カメラ窓保持機構2の設置スペースを確保しつつ、コンパクトにスマートフォン20内部に収納されるカメラモジュール10aを実現することができる。なお、本実施形態のように、AF機能実現などのためにアクチュエータ1(および機構系11)を用いる場合、端末カメラ窓3とレンズユニット4aとの間には、レンズユニット4aの繰り出し分のマージンを設ける必要がある。
レンズユニット4aは複数枚のレンズから構成されており、図1では、3枚のレンズから構成されている様子が示されている。なお、レンズユニット4aを構成するレンズの枚数は3枚に限定されない。図1に示すカメラモジュール10aのカメラ窓保持機構2の中央部には、開口部Hが形成されており、開口部Hの内部に、レンズユニット4aの対物側のレンズの一部が収容されている。これに対し、図6に示す比較例のカメラモジュール100では、カメラ窓保持機構102の開口部Hの内部にレンズユニット104の対物側のレンズの一部が収容されていない。本実施形態のカメラモジュール10aは、カメラモジュール100と比較して、カメラ窓保持機構2の開口部Hの内部にレンズユニット4aの対物側のレンズの一部が収容されている分だけ、スマートフォン20内部におけるカメラモジュール10aの収容高さを低減させることができる。
レンズバレル5aは、上述した複数のレンズを組み付けた筐体である。レンズバレル5aは、機構系11を介してアクチュエータ1によってレンズユニット4aとともに光軸方向に駆動される。
センサ7は、レンズユニット4aを介して受光した光信号を電気信号に変換する撮像素子であり、本実施形態では、CMOSで構成されている。なお、メカニカルシャッタを用いる場合は、センサ7は、CMOSに替えて、CCDを用いても良い。センサ7は、基板6上にワイヤボンディングにて固定されている。本実施形態の基板6はワイヤボンドタイプを図示しているがフリップチップ等でも同様の効果を得ることができる。
カバーガラス9〔主にIR(Infrared;赤外線)カットガラス〕には、レンズユニット4aによって透過された撮影光が入射される。カバーガラス9は、所定の波長を有する光を透過させ、それ以外の波長を有する光(主として赤外線)を遮断する透過特性を有している。カバーガラス保持機構8は、カバーガラス9を保持するものである。
図2は、本発明の実施形態2に係るカメラモジュール10bの構造を示す断面図である。本実施形態のカメラモジュール10bでは、レンズユニット4bの対物側のレンズが、他のレンズよりも小径化されており、カメラ窓保持機構2の開口部Hの壁面(カメラ窓保持機構2の受け部)が、レンズユニット4bの対物側のレンズのコバ部Kに近接している点で、上述したカメラモジュール10aと異なっている。特許文献2には、レンズ有効径の差を利用して小径部にアクチュエータを収納し、小型化を図る構成が開示されている。しかしながら、本実施形態では、小径化して空いたスペースにカメラ窓保持機構2を詰めて開口窓サイズ(開口部Hのサイズ)を小径化している。本実施形態のカメラモジュール10bの構造によれば、開口部Hのサイズ(開口窓サイズ)が小さくなることで、端末カメラ窓3に対するカメラ窓保持機構2の保持面積比が増え、シンプルな外観や、強度の向上、強度の向上による薄型化が可能となる。
図3は、本発明の実施形態3に係るカメラモジュール10cの構造を示す断面図である。本実施形態のカメラモジュール10cでは、非回転対称なアクチュエータ1L,1R(同図では、紙面に対して左側のみに機構系11Lが存在し、右側に機構系が存在していない)に対してカメラ窓保持機構の光軸方向に対する厚みを部分的に異ならせてカメラ窓保持機構2Rを配置している点で、上述したカメラモジュール10aと異なっている。便宜上、図3に示すカメラ窓保持機構のうち、紙面に対して右側に存在する部分をカメラ窓保持機構2R、左側に存在する部分をカメラ窓保持機構2Lと呼称する。このとき、カメラ窓保持機構2Rの光軸方向の厚みは、カメラ窓保持機構2Lの厚みと比較して厚くなっている。
図4は、本発明の実施形態4に係るカメラモジュール10dの構造を示す断面図である。本実施形態のカメラモジュール10dでは、実施形態2と同様に、レンズユニット4bの対物側のレンズが、他のレンズよりも小径化されており、カメラ窓保持機構2の開口部Hの壁面が、レンズユニット4bの対物側のレンズのコバ部Kに近接している点で、上述したカメラモジュール10aと異なっている。これにより、開口部Hのサイズが小さくなることで、端末カメラ窓3に対するカメラ窓保持機構2の保持面積比が増え、シンプルな外観や、強度の向上、強度の向上による薄型化が可能となる。
図5は、本発明の実施形態5に係るスマートフォン20の背面側を示す外観図である。同図に示すように、本実施形態のスマートフォン20は、上述した実施形態1~4のカメラモジュール10a~10dのいずれかを筐体の背面側に備える構成である。本実施形態のスマートフォン20によれば、スマートフォン20内部におけるカメラモジュール10a~10dの収容高さを低減させることができるので、スマートフォン20の薄型化が可能になる。
本発明の態様1に係るカメラモジュール(10a~10d)は、レンズユニット(4a,4b)を介して受光した光信号を電気信号に変換する撮像素子(センサ7)を備えたカメラモジュールであって、上記カメラモジュールの肩部に、カメラ窓(端末カメラ窓3)を保持するためのカメラ窓保持機構(2,2L,2R)を備えており、上記カメラ窓保持機構の中央部に開口部(H)が形成されており、上記開口部の内部に、上記レンズユニットの対物側のレンズの一部が収容されている構成である。上記構成によれば、カメラ窓保持機構の開口部の内部に、レンズユニットの対物側のレンズの一部が収容されている。従って、カメラ窓保持機構の開口部の内部にレンズユニットの対物側のレンズの一部が収容されていないカメラモジュールと比較して、端末内部におけるカメラモジュールの収容高さを低減させることができる。
また、本発明は、以下のように表現することもできる。
本発明は上述した各実施形態に限定されるものではなく、請求項に示した範囲で種々の変更が可能であり、異なる実施形態にそれぞれ開示された技術的手段を適宜組み合わせて得られる実施形態についても本発明の技術的範囲に含まれる。さらに、各実施形態にそれぞれ開示された技術的手段を組み合わせることにより、新しい技術的特徴を形成することができる。
2,2L,2R カメラ窓保持機構
3 端末カメラ窓(カメラ窓)
4a,4b レンズユニット
7 センサ(撮像素子)
10a~10d カメラモジュール
20 スマートフォン(端末装置)
H 開口部
K コバ部
Claims (6)
- レンズユニットを介して受光した光信号を電気信号に変換する撮像素子を備えたカメラモジュールであって、
上記カメラモジュールの肩部に、カメラ窓を保持するためのカメラ窓保持機構を備えており、
上記カメラ窓保持機構の中央部に開口部が形成されており、
上記開口部の内部に、上記レンズユニットの対物側のレンズの一部が収容されていることを特徴とするカメラモジュール。 - 上記レンズユニットを光軸方向に駆動するためのアクチュエータを備えており、
上記カメラ窓保持機構は、上記アクチュエータの肩上に配置されていることを特徴とする請求項1に記載のカメラモジュール。 - 上記レンズユニットの対物側のレンズが、他のレンズよりも小径化されており、
上記カメラ窓保持機構の開口部の壁面は、上記レンズユニットの対物側のレンズのコバ部に近接していることを特徴とする請求項1または2に記載のカメラモジュール。 - 上記レンズユニットの対物側のレンズは、上記カメラ窓に近接していることを特徴とする請求項3に記載のカメラモジュール。
- 上記アクチュエータの光軸方向の高さが他の部分よりも低くなっている箇所と上記カメラ窓との間が、上記カメラ窓保持機構の光軸方向に沿う厚みが他の部分よりも厚くなっている部分で埋められていることを特徴とする請求項2に記載のカメラモジュール。
- 請求項1から5までのいずれか1項に記載のカメラモジュールを備えていることを特徴とする端末装置。
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JP2016519146A JP6356231B2 (ja) | 2014-05-16 | 2015-03-18 | カメラモジュールおよび端末装置 |
US15/310,218 US10412288B2 (en) | 2014-05-16 | 2015-03-18 | Camera module including image sensor and camera window holding mechanism |
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