WO2023092384A1 - Ensemble lentille d'imagerie, module de caméra et dispositif d'imagerie - Google Patents

Ensemble lentille d'imagerie, module de caméra et dispositif d'imagerie Download PDF

Info

Publication number
WO2023092384A1
WO2023092384A1 PCT/CN2021/133112 CN2021133112W WO2023092384A1 WO 2023092384 A1 WO2023092384 A1 WO 2023092384A1 CN 2021133112 W CN2021133112 W CN 2021133112W WO 2023092384 A1 WO2023092384 A1 WO 2023092384A1
Authority
WO
WIPO (PCT)
Prior art keywords
lens
imaging
lens group
assembly according
lens assembly
Prior art date
Application number
PCT/CN2021/133112
Other languages
English (en)
Inventor
Tatsuya Nakatsuji
Yoji Okazaki
Takashi Hashimoto
Original Assignee
Guangdong Oppo Mobile Telecommunications Corp., Ltd.
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.)
Filing date
Publication date
Application filed by Guangdong Oppo Mobile Telecommunications Corp., Ltd. filed Critical Guangdong Oppo Mobile Telecommunications Corp., Ltd.
Priority to PCT/CN2021/133112 priority Critical patent/WO2023092384A1/fr
Publication of WO2023092384A1 publication Critical patent/WO2023092384A1/fr

Links

Images

Classifications

    • 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
    • G—PHYSICS
    • G02—OPTICS
    • G02B—OPTICAL ELEMENTS, SYSTEMS OR APPARATUS
    • G02B13/00—Optical objectives specially designed for the purposes specified below
    • G02B13/001—Miniaturised objectives for electronic devices, e.g. portable telephones, webcams, PDAs, small digital cameras
    • G02B13/0015—Miniaturised objectives for electronic devices, e.g. portable telephones, webcams, PDAs, small digital cameras characterised by the lens design
    • G02B13/002—Miniaturised objectives for electronic devices, e.g. portable telephones, webcams, PDAs, small digital cameras characterised by the lens design having at least one aspherical surface
    • G02B13/0045—Miniaturised objectives for electronic devices, e.g. portable telephones, webcams, PDAs, small digital cameras characterised by the lens design having at least one aspherical surface having five or more lenses
    • G—PHYSICS
    • G02—OPTICS
    • G02B—OPTICAL ELEMENTS, SYSTEMS OR APPARATUS
    • G02B13/00—Optical objectives specially designed for the purposes specified below
    • G02B13/001—Miniaturised objectives for electronic devices, e.g. portable telephones, webcams, PDAs, small digital cameras
    • G02B13/0055—Miniaturised objectives for electronic devices, e.g. portable telephones, webcams, PDAs, small digital cameras employing a special optical element
    • G02B13/0065—Miniaturised objectives for electronic devices, e.g. portable telephones, webcams, PDAs, small digital cameras employing a special optical element having a beam-folding prism or mirror
    • 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
    • G02B7/021—Mountings, adjusting means, or light-tight connections, for optical elements for lenses for more than one lens
    • 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
    • G02B7/023—Mountings, adjusting means, or light-tight connections, for optical elements for lenses permitting adjustment
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04N—PICTORIAL COMMUNICATION, e.g. TELEVISION
    • H04N23/00—Cameras or camera modules comprising electronic image sensors; Control thereof
    • H04N23/58—Means for changing the camera field of view without moving the camera body, e.g. nutating or panning of optics or image sensors
    • G—PHYSICS
    • G02—OPTICS
    • G02B—OPTICAL ELEMENTS, SYSTEMS OR APPARATUS
    • G02B9/00—Optical objectives characterised both by the number of the components and their arrangements according to their sign, i.e. + or -
    • G02B9/60—Optical objectives characterised both by the number of the components and their arrangements according to their sign, i.e. + or - having five components only

Definitions

  • the present disclosure relates to an imaging lens assembly, a camera module, and an imaging device, and more specifically, to an imaging lens assembly, a camera module, and an imaging device that are slim and enable good optical performance.
  • a conventional imaging lens assembly secures a long focal length of the imaging lens assembly within a restricted space by disposing a prism on an object side of a lens group.
  • Such an imaging lens assembly is known as a periscope-type telephoto lens.
  • an imaging lens group is retracted in a space between the imaging lens group and a sensor.
  • a bright lens with a small F-number can be used.
  • the focal length of the lens becomes longer, the thickness cannot be reduced due to a limitation of a length of a shaft serving as a guide when the lens is extended.
  • the present disclosure aims to solve at least one of the technical problems mentioned above. Accordingly, the present disclosure needs to provide an imaging lens, a camera module and an imaging device.
  • an imaging lens assembly includes:
  • a lens group including at least a most object side disposed lens and a most imaging surface side disposed lens and being integrally movable along an optical axis of the lens group;
  • a mirror disposed between the lens group and an imaging surface and being configured to reflect incident light, which is incident from the lens group, toward the imaging surface by tilting with respect to the optical axis of the lens group in a shooting state, and to secure a storage space for the lens group by being substantially perpendicular to the optical axis of the lens group in a stored lens state.
  • a camera module includes:
  • an image sensor including the imaging surface.
  • an imaging device includes:
  • a housing which houses the camera module.
  • FIG. 1A is a diagram of an imaging device according to the present disclosure illustrating an imaging lens assembly in a stored lens state
  • FIG. 1B is a diagram of the imaging device according to the present disclosure illustrating the imaging lens assembly in a shooting state
  • FIG. 2 is an explanatory diagram for explaining lens parameters of the imaging lens assembly according to the present disclosure
  • FIG. 3A is a diagram of a camera module in the stored lens state according to a first example of the present disclosure
  • FIG. 3B is a diagram of the camera module in the shooting state according to the first example of the present disclosure.
  • FIG. 4 is an aberration diagram of the camera module according to the first example of the present disclosure.
  • FIG. 5A is a diagram of a camera module in the stored lens state according to a second example of the present disclosure.
  • FIG. 5B is a diagram of the camera module in the shooting state according to the second example of the present disclosure.
  • FIG. 6 is an aberration diagram of the camera module according to the second example of the present disclosure.
  • FIG. 7A is a diagram of a camera module in the stored lens state according to a third example of the present disclosure.
  • FIG. 7B is a diagram of the camera module in the shooting state according to the third example of the present disclosure.
  • FIG. 8 is an aberration diagram of the camera module according to the third example of the present disclosure.
  • FIG. 9A is a diagram of a camera module in the stored lens state according to a fourth example of the present disclosure.
  • FIG. 9B is a diagram of the camera module in the shooting state according to the fourth example of the present disclosure.
  • FIG. 10 is a diagram of a camera module of a modified example according to the fourth example of the present disclosure.
  • FIG. 11A is a perspective view of the imaging device in the stored lens state according to a fifth example of the present disclosure.
  • FIG. 11B is a perspective view of the imaging device in the shooting state according to the fifth example of the present disclosure.
  • FIG. 12 is a side view of a lens drive mechanism according to the fifth example of the present disclosure.
  • FIG. 13A is a cross-sectional view of the imaging device in the stored lens state according to the fifth example of the present disclosure.
  • FIG. 13B is a cross-sectional view of the imaging device in the shooting state according to the fifth example of the present disclosure.
  • an imaging device 1 to which the present disclosure is applied includes a camera module 11 and a housing 12 which houses the camera module 11.
  • the camera module 11 includes an imaging lens assembly 21, an optical filter 22 and an image sensor 23 having an imaging surface S.
  • the imaging lens assembly 21 includes, in order from an object side, an aperture stop 30, a lens group 31, and a mirror 32.
  • the camera module 11, to which the present disclosure is more specifically applied, is configured as shown in FIGS. 3A, 3B, 5A, 5B, 7A, 7B, 9A, 9B and 10, for example.
  • the lens group 31 includes at least a most object side disposed lens and a most imaging surface S side disposed lens.
  • the number of lenses included in the lens group 31 is preferably between 4 or more and 7 or less. By setting the number of lenses included in the lens group 31 to between 4 or more and 7 or less, it is possible to obtain good optical performance while suppressing the thickness T of the imaging device 1 (i.e., the housing 12) .
  • the lens group 31 is configured to be integrally movable along the optical axis OA of the lens group 31. Specifically, in the examples shown in FIGS. 1A and 1B, the lens group 31 is held or fixed in a single barrel 33. Therefore, the relative positional relationship between the lenses included in the lens group 31 does not change. Further, the lens group 31 can be moved by the lens drive mechanism 13 which is a part of the imaging device 1.
  • the lens drive mechanism 13 may serve as a collapsible mechanism and an AF mechanism by including, for example, only a stepping motor or an actuator such as a stepping motor and a voice coil motor.
  • the mirror 32 is disposed between the lens group 31 and the imaging surface S. As shown in FIG. 1B, the mirror 32 is configured to reflect incident light L, which is incident from the lens group 31, toward the imaging surface S by tilting with respect to the optical axis OA of the lens group 31 in a shooting state where a subject (object) is shot (recorded as an image) .
  • the imaging surface S is substantially parallel to the optical axis OA of the lens group 31 (i.e., substantially perpendicular to the reflection direction of the incident light on the mirror 32) .
  • the mirror 32 is configured to secure a storage space for the lens group 31 by being substantially perpendicular (i.e., 90°) to the optical axis OA of the lens group 31 in a stored lens state where the lens group 31 is housed in the housing 12.
  • the mirror 32 can change its angle with respect to the optical axis OA of the lens group 31 by rotating about a rotation axis 32a located on one end side of the mirror 32 on the imaging surface S side.
  • the mirror 32 can be rotated by a mirror drive mechanism 14 which is a part of the imaging device 1.
  • the mirror 32 can be easily manufactured, for example, by coating a substrate containing at least one of two materials, i.e., glass and plastic, with a reflective film containing a metal such as aluminum.
  • the mirror drive mechanism 14 may include, for example, an elastic member (for example, a spring) which applies to the mirror 32 an elastic force in a direction in which the mirror 32 tilts with respect to the optical axis OA of the lens group 31, and an actuator capable of pushing the mirror 32 back against the elastic force of the elastic member in a direction in which the mirror 32 is perpendicular to the optical axis OA.
  • the actuator may include, for example, a motor and a transmission member (for example, a gear, a cam, etc. ) which transmits a driving power of the motor to the mirror 32.
  • the imaging device 1 is switched from the stored lens state to the shooting state when a predetermined user operation to switch from the stored lens state to the shooting state is performed in the stored lens state.
  • the imaging device 1 drives the lens group 31, which is housed in the housing 12, in a direction protruding from the housing 12 or a direction opposite to the mirror 32 by using the lens drive mechanism 13.
  • the lens drive mechanism 13 performs a focusing operation which adjusts a position of the lens group 31 in the optical axis direction to focus the lens group 31 on the subject.
  • the imaging device 1 rotates the mirror 32 toward the lens group 31 and tilts the mirror 32 with respect to the optical axis OA of the lens group 31 by using the mirror drive mechanism 14.
  • the tilt angle ⁇ of the mirror 32 is preferably between 42° or more and 48° or less, and is more preferably 45°.
  • the mirror 32 can reflect incident light L, incident from the lens group 31, in a direction substantially perpendicular to the optical axis OA of the lens group 31 (i.e., a thickness direction of the imaging device 1) in the shooting state. That is, an optical path can be bent substantially 90°. As a result, a thickness T of the imaging device 1 can be effectively suppressed.
  • the imaging device 1 is switched from the shooting state to the stored lens state when a predetermined user operation to switch from the shooting state to the stored lens state is performed.
  • the imaging device 1 drives the lens group 31 in a direction retracting into the housing 12, that is, toward the mirror 32 by using the lens drive mechanism 13.
  • the imaging device 1 rotates the mirror 32 toward an opposite side of the lens group 31 until the mirror 32 is substantially perpendicular to the optical axis OA of the lens group 31, by using the mirror drive mechanism 14.
  • the image sensor 23 is, for example, a solid-state image sensor such as a CMOS (Complementary Metal Oxide Semiconductor) or a CCD (Charge Coupled Device) .
  • the image sensor 23 has the imaging surface S which is an imaging plane of the imaging lens assembly 21.
  • the image sensor 23 receives incident light from the subject (object side) via the imaging lens assembly 21 and the optical filter 22, photoelectrically converts the light, and outputs an image data, obtained by photoelectric conversion of the light, to a subsequent stage.
  • the optical filter 22 disposed between the imaging lens assembly 21 and the image sensor 23 may be, for example, an IR (infrared) filter which cuts infrared light from incident light.
  • the IR filter may be disposed between the lens group 31 and the mirror 32, and may move together with the lens group 31 in the optical axis direction of the lens group 31 according to the shooting state and the stored lens state.
  • the imaging device 1 it is possible to have the imaging device 1 be sufficiently slim while using a bright telephoto lens having a small F-number (that is, a large effective diameter) suitable for shooting in a dark place. Further, by having the lens group 31 be movable as-a-whole, it is possible to suppress deterioration of the optical performance due to eccentricity of the lens group 31.
  • the imaging lens assembly 21 to which the present disclosure is applied can ensure more effectively the slimming of the imaging device 1 and can maintain more effectively the good optical performance of the imaging lens assembly 21 when the imaging lens assembly 21 satisfies the following formula (1) :
  • LTL is a distance on the optical axis OA of the lens group 31 from a surface on an object side of the most object side disposed lens to a surface on an imaging surface S side of the most imaging surface side disposed lens (hereinafter the same applies) .
  • TLT can also be referred to as a total length of the lens group 31.
  • the imaging lens assembly 21 can ensure more effectively the slimming of the imaging device 1 and maintain more effectively the good optical performance of the imaging lens assembly 21 when the imaging lens assembly 21 satisfies the following formula (2) :
  • da is a diameter (that is, an opening diameter) of the aperture stop 30 (hereinafter the same applies) .
  • the value of da falls below the lower limit value of the formula (2) , it is difficult to reduce the F-number, and thus it is difficult to maintain good optical performance when shooting is performed in a dark place.
  • the value of da exceeds the upper limit of the formula (2) , since the lens group 31 needs to be enlarged in accordance with a diameter of the aperture stop 30, it is difficult to reduce the thickness of the imaging device 1. Further, if the F-number is too small, the aberration correction performance cannot be maintained, and it is difficult to obtain a good quality image.
  • the imaging lens assembly 21 can ensure more effectively the slimming of the imaging device 1 and maintain more effectively the good optical performance of the imaging lens assembly 21 when the imaging lens assembly 21 satisfies the following formula (3) :
  • the imaging lens assembly 21 can maintain more effectively its good optical performance when the imaging lens assembly 21 satisfies the following formula (4) :
  • ds is a short side dimension of a rectangular imaging surface S (i.e., image sensor 23) shown in FIG. 3 (hereinafter the same applies) .
  • da is less than ds, it is difficult to reduce the F-number, and thus it is difficult to maintain good optical performance when shooting is performed in a dark place.
  • the imaging lens assembly 21 can effectively create good optical blur when the imaging lens assembly 21 satisfies the following formula (5) :
  • dd is a half-diagonal length of the imaging surface S shown in FIG. 2, that is, an image height.
  • the imaging lens assembly 21 can maintain more effectively its good optical performance when the imaging lens assembly 21 satisfies the following formula (6) :
  • RI is a relative illumination of light received by the imaging surface S (hereinafter the same applies) . That is, RI is a ratio of an amount of light received at a peripheral portion of the imaging surface S to an amount of light received at a central portion of the imaging surface S.
  • the manufacturability of the imaging device 1 can be effectively secured and the slimming of the imaging device 1 can be effectively achieved when the imaging lens assembly 21 satisfies the following formula (7) .
  • FOVm is defined as twice the value of a maximum angle formed by an incident light incident on the aperture stop 30 with respect to the optical axis OA of the lens group 31, that is, an angle of view (hereinafter the same applies) .
  • the numerical range of the angle shown in the formula (7) corresponds to a range of a zoom ratio of about 1.7 times to about 10 times when converted to the zoom ratio based on the 24 mm focal length angle of view when shooting with a 35 mm format sensor.
  • the value of FOVm falls below the lower limit value of the formula (7) , it is difficult to secure sufficient back focus, and thus manufacturability decreases.
  • the value of FOVm exceeds the upper limit value of the formula (7) , the thickness T of the imaging device 1 is too large, and thus it is difficult to reduce the thickness of the imaging device 1. Further, the size of the housing 12 for accommodating the camera module 11 also increases, which does not contribute to the miniaturization of the entire unit.
  • An aspherical lens among lenses included in the imaging lens assembly 21 can be formed of glass materials and plastic materials. However, from the viewpoint of lens molding, it is preferable that the aspherical lens is formed of a plastic material. This is because if the aspherical lens is made of a material other than a plastic, a tolerance with respect to an outer shape of the lens is large, and thus, lens eccentricity occurs and it is difficult to obtain a good quality image.
  • Such a camera module 11 including the imaging lens assembly 21 can be used in compact digital devices (imaging devices 1) such as mobile phones, wearable cameras and surveillance cameras.
  • Si indicates the ordinal number of the i-th surface which sequentially increases from the object side toward the imaging surface S side.
  • Optical elements of the corresponding surfaces are indicated by the corresponding surface number “Si” .
  • Denotations of “first surface” or “1st surface” indicate a surface on the object side of the lens
  • denotations of “second surface” or “2nd surface” indicate a surface on the imaging surface S side of the lens.
  • “Ri” indicates the value of a central curvature radius (mm) of the surface.
  • Di indicates a value of a distance on the optical axis between the i-th surface and the (i + 1) -th surface (mm) .
  • Nedi indicates a value of a refractive index at d-line (wavelength 587.6 nm) of the material of the optical element having the i-th surface.
  • ⁇ di indicates a value of the Abbe number at d-line of the material of the optical element having the i-th surface.
  • “Material” indicates the material of the optical element having the i-th surface.
  • the imaging lens assembly 21 used in the following examples includes lenses having aspheric surfaces.
  • the aspheric shape of the lens is defined by the following formula (8) :
  • Z is a depth of the aspheric surface
  • C is a paraxial curvature which is equal to 1 /R
  • h is a distance from the optical axis to a lens surface
  • K is a conic constant (second-order aspheric coefficient)
  • An is an nth-order aspheric coefficient.
  • the imaging lens assembly 21 includes, in order from the object side toward the imaging surface S side, a first lens L1 having a positive refractive power in a paraxial region with a convex surface facing the object side, a second lens L2 having a negative refractive power in the paraxial region, a third lens L3 having a positive refractive power in the paraxial region, a fourth lens L4 having a positive refractive power in the paraxial region with a convex surface facing the imaging surface S side, and a fifth lens L5 having a negative refractive power in the paraxial region.
  • the aperture stop 30 is disposed on the object side of the first lens L1.
  • Table 1 shows lens data of the first example.
  • Table 2 shows aspheric coefficients of the imaging lens assembly 21.
  • "Ei” indicates an exponential expression with a base of 10, i.e., "10 -i " .
  • E-04 indicates "-3.906653 ⁇ 10 -4 ” .
  • Table 3 shows values of parameters corresponding to the conditional expressions.
  • FIG. 4 shows, as examples of aberrations, spherical aberration, astigmatism (field curvature) , distortion and chromatic aberration of magnification.
  • a reference wavelength is d-line (587.56 nm) .
  • S indicates a value of aberration on a sagittal image surface
  • T indicates a value of aberration on a tangential image surface.
  • g-line 435.84 nm
  • d-line and C-line (656.27 nm)
  • a reference wavelength is d-line.
  • chromatic aberration of a magnification diagram chromatic aberrations of magnification of C-line and g-line when d-line is used as a reference wavelength are shown. The same applies to aberration diagrams in other examples.
  • the camera module 11 in the first example can satisfactorily correct various aberrations to obtain superior optical performance.
  • the third lens L3 has a negative refractive power in the paraxial region and the fifth lens L5 has a positive refractive power in the paraxial region.
  • the lens parameters corresponding to those in the first example are shown in Tables 4 to 6.
  • the third lens L3 has a negative refractive power in the paraxial region.
  • the lens parameters corresponding to those in the first example are shown in Tables 7 to 9.
  • the imaging surface S is perpendicular to the optical axis OA of the lens group 31.
  • the imaging lens assembly 21 includes a second mirror 34 as an example of a reflective member which is disposed between the mirror 32 and the imaging surface S.
  • the second mirror 34 reflects light, which is reflected by the mirror 32, toward the imaging surface S.
  • the second mirror 34 is rotatable about a rotation shaft 34a located on one end side opposite to the mirror 32.
  • the second mirror 34 can be rotated by the same mechanism as the mirror drive mechanism 14 described above.
  • a prism 35 may be used as the reflective member instead of the second mirror 34.
  • the configuration can be simplified as compared with the case where the second mirror 34 is used.
  • the thickness T of the imaging device 1 can be effectively suppressed even if the size of the image sensor 23 is larger than that when the prism 35 is used.
  • the lens parameters and aberration diagrams of the fourth example are the same as those of the third example.
  • the image sensor 23 can be arranged so as to be perpendicular to the thickness direction of the imaging device 1. As a result, the size restriction of the image sensor 23 due to the restriction of the thickness T of the imaging device 1 can be eliminated. Therefore, according to the camera module 11 of the fourth example, a large image sensor 23 can be used. By using the large image sensor 23, the image quality can be further improved.
  • an example of an imaging device 1 including an interlocking mechanism which interlocks a movement of the lens group 31 in the optical axis direction with a rotation of the mirror 32, will be explained.
  • the interlocking mechanism includes, for example, the lens drive mechanism 13 and the mirror drive mechanism 14 of the fifth example as described below.
  • the lens drive mechanism 13 includes a motor 131 and a transmission member 132 which transmits a power of the motor 131 to the barrel 33.
  • the lens drive mechanism 13 further includes a main shaft 133A, a sub shaft 133B, a first spring 134, a first sliding portion 135A, and a second sliding portion 135B.
  • the motor 131 is, for example, a stepping motor. By adopting a stepping motor, the lens group 31 can be appropriately driven with a sufficient driving force.
  • the transmission member 132 includes a first gear 1321, a second gear 1322, a cylindrical cam 1323, and a cam pin 1324.
  • the first gear 1321 is disposed above the motor 131 and is fixed to a motor output shaft 131a which has an axial direction along the optical axis direction of the lens group 31 (i.e., the thickness direction of the imaging device 1) .
  • the second gear 1322 is arranged in a direction perpendicular to the optical axis direction of the lens group 31 with respect to the first gear 1321 and the barrel 33, and meshes with the first gear 1321.
  • the cylindrical cam 1323 is disposed below the second gear 1322 and fixed coaxially with the second gear 1322.
  • the cylindrical cam 1323 has an outer peripheral surface 1323a concentric with the second gear 1322.
  • a spiral cam groove 1323b is provided on the outer peripheral surface 1323a.
  • the cam pin 1324 is fixed to the barrel 33 and extends in a direction perpendicular to the optical axis direction of the lens group 31 toward the cylindrical cam 1323. The tip of the cam pin 1324 is inserted into the cam groove 1323b.
  • the cylindrical cam 1323 rotates counterclockwise as shown by an arrow A2.
  • the lens group 31 can be raised to a shooting position.
  • the motor 131 is rotated counterclockwise in the shooting state, the lens group 31 can be lowered to a storing position.
  • the angle of the cam groove 1323b is formed large in order to shorten a linear motion time of the barrel 33.
  • the angle of the cam groove 1323b is formed small in a focus position space in order to improve a positioning accuracy in the focus position space.
  • the main shaft 133A and the sub shaft 133B are disposed in a direction perpendicular to the optical axis direction of the lens group 31 with respect to the mirror 32.
  • the main shaft 133A and the sub shaft 133B extend upward from a bottom surface 121a of a box-shaped holder 121, which holds the camera module 11 in the housing 12, along the optical axis direction of the lens group 31.
  • the main shaft 133A and the sub shaft 133B are disposed opposite each other with respect to the lens group 31.
  • the first spring 134 is supported by the main shaft 133A with the main shaft 133A inserted in the first spring 134.
  • the direction of expansion /contraction of the first spring 134 is along the optical axis direction of the lens group 31.
  • the lower end of the first spring 134 is fixed to the bottom surface 121a of the holder 121.
  • the upper end of the first spring 134 is fixed to the barrel 33.
  • the upper end of the first spring 134 is fixed to a first sliding portion 135A provided on the barrel 33.
  • the first sliding portion 135A can slide along the main shaft 133A.
  • the barrel 33 can be driven in the optical axis direction. Further, it is possible to regulate the amount of movement of the barrel 33 in the horizontal direction with respect to the optical axis and the inclination of the barrel 33 with respect to the optical axis direction.
  • the barrel 33 is further provided with a second sliding portion 135B, and the second sliding portion 135B is slidable along the sub shaft 133B to which the first spring 134 is not provided. According to the sub shaft 133B and the second sliding portion 135B, the barrel 33 can suppress the rotation about the main shaft 133A.
  • the mirror drive mechanism 14 includes a second spring 141 and a support shaft 143.
  • the support shaft 143 is located on one end side (i.e., in the vicinity of the one end) of the mirror 32 on the imaging surface S side.
  • the support shaft 143 functions as a rotation axis of the mirror 32. That is, the support shaft 143 rotatably supports the mirror 32 about the support shaft 143.
  • the second spring 141 is provided on the outer circumference of the support shaft 143.
  • the second spring 141 gives the mirror 32 an elastic force that causes the mirror 32 to rotate clockwise.
  • the second spring 141 is, for example, a torsion coil spring.
  • the other end 32b (i.e., upper end) of the mirror 32 is held in contact with the lower end surface of the barrel 33 by the elastic force of the second spring 141.
  • the drive source (motor 131) can be shared by the lens drive mechanism 13 and the mirror drive mechanism 14.
  • the interlocking mechanism is not limited to the configuration shown in FIGS. 11A to 13B as long as the movement of the lens group 31 in the optical axis direction and the rotation of the mirror 32 can be interlocked.
  • first and second are used herein for purposes of description and are not intended to indicate or imply relative importance or significance or to imply the number of indicated technical features.
  • the feature defined with “first” and “second” may comprise one or more of this feature.
  • a plurality of means two or more than two, unless specified otherwise.
  • the terms “mounted” , “connected” , “coupled” and the like are used broadly, and may be, for example, fixed connections, detachable connections, or integral connections; may also be mechanical or electrical connections; may also be direct connections or indirect connections via intervening structures; may also be inner communications of two elements, which can be understood by those skilled in the art according to specific situations.
  • a structure in which a first feature is "on" or “below” a second feature may include an embodiment in which the first feature is in direct contact with the second feature, and may also include an embodiment in which the first feature and the second feature are not in direct contact with each other, but are contacted via an additional feature formed therebetween.
  • a first feature "on” , “above” or “on top of” a second feature may include an embodiment in which the first feature is right or obliquely “on” , “above” or “on top of” the second feature, or just means that the first feature is at a height higher than that of the second feature; while a first feature “below” , “under” or “on bottom of” a second feature may include an embodiment in which the first feature is right or obliquely “below” , "under” or “on bottom of” the second feature, or just means that the first feature is at a height lower than that of the second feature.
  • Any process or method described in a flow chart or described herein in other ways may be understood to include one or more modules, segments or portions of codes of executable instructions for achieving specific logical functions or steps in the process, and the scope of a preferred embodiment of the present disclosure includes other implementations, in which it should be understood by those skilled in the art that functions may be implemented in a sequence other than the sequences shown or discussed, including in a substantially identical sequence or in an opposite sequence.
  • the logic and/or step described in other manners herein or shown in the flow chart, for example, a particular sequence table of executable instructions for realizing the logical function may be specifically achieved in any computer readable medium to be used by the instruction execution system, device or equipment (such as the system based on computers, the system comprising processors or other systems capable of obtaining the instruction from the instruction execution system, device and equipment and executing the instruction) , or to be used in combination with the instruction execution system, device and equipment.
  • the computer readable medium may be any device adaptive for including, storing, communicating, propagating or transferring programs to be used by or in combination with the instruction execution system, device or equipment.
  • the computer readable medium comprise but are not limited to: an electronic connection (an electronic device) with one or more wires, a portable computer enclosure (a magnetic device) , a random access memory (RAM) , a read only memory (ROM) , an erasable programmable read-only memory (EPROM or a flash memory) , an optical fiber device and a portable compact disk read-only memory (CDROM) .
  • the computer readable medium may even be a paper or other appropriate medium capable of printing programs thereon, this is because, for example, the paper or other appropriate medium may be optically scanned and then edited, decrypted or processed with other appropriate methods when necessary to obtain the programs in an electric manner, and then the programs may be stored in the computer memories.
  • each part of the present disclosure may be realized by the hardware, software, firmware or their combination.
  • a plurality of steps or methods may be realized by the software or firmware stored in the memory and executed by the appropriate instruction execution system.
  • the steps or methods may be realized by one or a combination of the following techniques known in the art: a discrete logic circuit having a logic gate circuit for realizing a logic function of a data signal, an application-specific integrated circuit having an appropriate combination logic gate circuit, a programmable gate array (PGA) , a field programmable gate array (FPGA) , etc.
  • each function cell of the embodiments of the present disclosure may be integrated in a processing module, or these cells may be separate physical existence, or two or more cells are integrated in a processing module.
  • the integrated module may be realized in a form of hardware or in a form of software function modules. When the integrated module is realized in a form of software function module and is sold or used as a standalone product, the integrated module may be stored in a computer readable storage medium.
  • the storage medium mentioned above may be read-only memories, magnetic disks, CD, etc.

Landscapes

  • Physics & Mathematics (AREA)
  • General Physics & Mathematics (AREA)
  • Optics & Photonics (AREA)
  • Engineering & Computer Science (AREA)
  • Multimedia (AREA)
  • Signal Processing (AREA)
  • Lenses (AREA)

Abstract

Un ensemble lentille d'imagerie comprend un groupe de lentilles comprenant au moins une lentille disposée au maximum côté objet et une lentille disposée au maximum côté surface d'imagerie et étant intégralement mobile le long d'un axe optique du groupe de lentilles, et un miroir disposé entre le groupe de lentilles et une surface d'imagerie et conçu pour réfléchir la lumière incidente, qui est incidente à partir du groupe de lentilles, vers la surface d'imagerie par inclinaison par rapport à l'axe optique du groupe de lentilles dans un état de prise de vue, et pour fixer un espace de stockage pour le groupe de lentilles en étant sensiblement perpendiculaire à l'axe optique du groupe de lentilles dans un état de lentille stocké.
PCT/CN2021/133112 2021-11-25 2021-11-25 Ensemble lentille d'imagerie, module de caméra et dispositif d'imagerie WO2023092384A1 (fr)

Priority Applications (1)

Application Number Priority Date Filing Date Title
PCT/CN2021/133112 WO2023092384A1 (fr) 2021-11-25 2021-11-25 Ensemble lentille d'imagerie, module de caméra et dispositif d'imagerie

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
PCT/CN2021/133112 WO2023092384A1 (fr) 2021-11-25 2021-11-25 Ensemble lentille d'imagerie, module de caméra et dispositif d'imagerie

Publications (1)

Publication Number Publication Date
WO2023092384A1 true WO2023092384A1 (fr) 2023-06-01

Family

ID=86538508

Family Applications (1)

Application Number Title Priority Date Filing Date
PCT/CN2021/133112 WO2023092384A1 (fr) 2021-11-25 2021-11-25 Ensemble lentille d'imagerie, module de caméra et dispositif d'imagerie

Country Status (1)

Country Link
WO (1) WO2023092384A1 (fr)

Citations (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US20130176479A1 (en) * 2012-01-11 2013-07-11 Canon Kabushiki Kaisha Zoom lens and image pickup apparatus equipped with same
US20140063604A1 (en) * 2012-09-04 2014-03-06 Canon Kabushiki Kaisha Zoom lens and image-pickup apparatus including the same
CN111447351A (zh) * 2020-05-18 2020-07-24 Oppo广东移动通信有限公司 摄像头模组及电子设备
US20210232033A1 (en) * 2020-01-24 2021-07-29 Seiko Epson Corporation Projection system and projector
US20210333692A1 (en) * 2018-05-14 2021-10-28 Corephotonics Ltd. Folded camera lens designs

Patent Citations (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US20130176479A1 (en) * 2012-01-11 2013-07-11 Canon Kabushiki Kaisha Zoom lens and image pickup apparatus equipped with same
US20140063604A1 (en) * 2012-09-04 2014-03-06 Canon Kabushiki Kaisha Zoom lens and image-pickup apparatus including the same
US20210333692A1 (en) * 2018-05-14 2021-10-28 Corephotonics Ltd. Folded camera lens designs
US20210232033A1 (en) * 2020-01-24 2021-07-29 Seiko Epson Corporation Projection system and projector
CN111447351A (zh) * 2020-05-18 2020-07-24 Oppo广东移动通信有限公司 摄像头模组及电子设备

Similar Documents

Publication Publication Date Title
US7369326B2 (en) Imaging optical system and image pickup apparatus
JP6238103B2 (ja) 撮像光学系、カメラ装置および携帯情報端末装置
JP2010164841A (ja) 撮像モジュール、撮像装置及び光学機器
WO2021159406A1 (fr) Lentille d'imagerie, module de caméra et dispositif d'imagerie
JP2006330349A (ja) 変倍光学系及び撮像装置
JP2005024969A (ja) 撮像レンズ
JP2007286548A (ja) ズームレンズおよびデジタルカメラおよび携帯情報機器
CN112444946A (zh) 拍摄光学系统、拍摄装置以及移动终端
WO2021128064A1 (fr) Lentille d'imagerie, module de dispositif de prise de vues et dispositif d'imagerie
JP5270267B2 (ja) ズームレンズ、ズームレンズユニット、及び電子機器
JP2014238469A (ja) ズームレンズ及び撮像装置
WO2023092384A1 (fr) Ensemble lentille d'imagerie, module de caméra et dispositif d'imagerie
WO2023159432A1 (fr) Ensemble lentille d'imagerie, module de caméra et dispositif d'imagerie
WO2022016329A1 (fr) Ensemble lentille d'imagerie, module de caméra et dispositif d'imagerie
WO2023087146A1 (fr) Ensemble lentille d'imagerie, module de caméra et dispositif d'imagerie
JP2022072586A (ja) 撮像光学系及び撮像装置
CN113933963A (zh) 光学变焦系统、摄像模组及电子设备
WO2022236552A1 (fr) Ensemble lentille d'imagerie, module de caméra et dispositif d'imagerie
WO2023039878A1 (fr) Ensemble lentille d'imagerie, module de caméra et dispositif d'imagerie
WO2023092385A1 (fr) Dispositif d'entraînement d'élément optique et dispositif d'imagerie
KR20220010979A (ko) 카메라 모듈 및 이동 단말기
WO2023044854A1 (fr) Ensemble lentille d'imagerie, module de caméra et dispositif d'imagerie
WO2023245548A1 (fr) Ensemble lentille d'imagerie, module de caméra et dispositif d'imagerie
WO2024055279A1 (fr) Ensemble lentille d'imagerie, module de caméra et dispositif d'imagerie
JP7254864B2 (ja) 光学系、及びカメラモジュール