WO2010047178A1 - 撮像レンズ及び撮像装置並びに携帯端末 - Google Patents
撮像レンズ及び撮像装置並びに携帯端末 Download PDFInfo
- Publication number
- WO2010047178A1 WO2010047178A1 PCT/JP2009/065059 JP2009065059W WO2010047178A1 WO 2010047178 A1 WO2010047178 A1 WO 2010047178A1 JP 2009065059 W JP2009065059 W JP 2009065059W WO 2010047178 A1 WO2010047178 A1 WO 2010047178A1
- Authority
- WO
- WIPO (PCT)
- Prior art keywords
- lens
- imaging
- object side
- image
- imaging lens
- Prior art date
Links
Images
Classifications
-
- 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
- G02B13/0035—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 three 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
- G02B13/006—Miniaturised objectives for electronic devices, e.g. portable telephones, webcams, PDAs, small digital cameras employing a special optical element at least one element being a compound optical element, e.g. cemented elements
-
- G—PHYSICS
- G02—OPTICS
- G02B—OPTICAL ELEMENTS, SYSTEMS OR APPARATUS
- G02B13/00—Optical objectives specially designed for the purposes specified below
- G02B13/18—Optical objectives specially designed for the purposes specified below with lenses having one or more non-spherical faces, e.g. for reducing geometrical aberration
-
- G—PHYSICS
- G02—OPTICS
- G02B—OPTICAL ELEMENTS, SYSTEMS OR APPARATUS
- G02B13/00—Optical objectives specially designed for the purposes specified below
- G02B13/22—Telecentric objectives or lens systems
Definitions
- the present invention relates to an imaging lens, an imaging apparatus, and a mobile terminal of an imaging apparatus using a solid-state imaging device such as a CCD (Charge Coupled Device) type image sensor or a CMOS (Complementary Metal-Oxide Semiconductor) type image sensor.
- a solid-state imaging device such as a CCD (Charge Coupled Device) type image sensor or a CMOS (Complementary Metal-Oxide Semiconductor) type image sensor.
- Compact and very thin imaging devices are used in compact and thin electronic devices such as mobile phones and PDAs (Personal Digital Assistants).
- a solid-state image pickup element such as a CCD type image sensor or a CMOS type image sensor is known.
- the number of pixels of an image sensor has been increased, and higher resolution and higher performance have been achieved.
- an imaging lens for forming a subject image on these imaging elements is required to be compact in response to miniaturization of the imaging element, and the demand tends to increase year by year.
- imaging lens used in such an imaging device hereinafter also referred to as “camera module” incorporated in a portable terminal, a type in which three plastic lenses are configured, and three glass lenses and one plastic lens.
- An optical system having a configuration is known (for example, see Patent Document 1).
- a method has been proposed in which a large number of lens elements are simultaneously molded on a glass substrate of several inches by a replica method, and a glass substrate (lens wafer) on which a large number of these lens elements are formed is separated to mass-produce lenses.
- a lens manufactured by such a manufacturing method is sometimes called a wafer scale lens.
- a three-lens imaging lens using such a wafer scale lens is known (see, for example, Patent Document 2 and Patent Document 3).
- JP 2006-301403 A Japanese Patent No. 3977782 Japanese Patent No. 4022246
- the glass on which the lens element is formed (hereinafter referred to as a substrate portion) is preferably a parallel plate in consideration of workability and cost.
- a parallel plate since one surface of a lens element (hereinafter referred to as a lens portion) that is in close contact has no refractive power, that is, only one surface of the lens portion can have power, In order to obtain a strong refractive power without changing the effective diameter, it is necessary to reduce the radius of curvature of the surface of the lens portion in contact with air.
- the radius of curvature becomes small, there is a problem that the difference in thickness between the periphery and the center of the lens part becomes large, and it becomes difficult to mold the lens part.
- a mold is fixed on the substrate part, a UV curable resin is injected into the cavity, and the UV curable resin is cured by irradiating ultraviolet rays from the outside.
- An aspherical lens portion can be easily formed. In this method, unless the thickness of the resin portion is made extremely thin, there is a problem that the ultraviolet ray transmission is bad and the UV curable resin is hard to be cured.
- thermosetting resin is cured in order from the surface in contact with the mold, when the lens portion is thickened, the portion far from the mold may be cured slowly and the refractive index may be nonuniform. There is.
- a positive refractive power is provided in order from the object side as described in Patent Document 1.
- a so-called telephoto type lens configuration is suitable.
- the three-element optical system described in Patent Document 2 and Patent Document 3 has a first lens having a positive refractive power, a second lens having a negative refractive power, and a positive refractive power.
- the so-called triplet type constituted by the third lens was not suitable for downsizing the entire length.
- An object of the present invention is to provide a low-cost, small and high-performance imaging lens, a small and high-performance imaging device using the imaging lens, and a portable terminal.
- the imaging lens according to claim 1 is an imaging lens that forms a subject image on a photoelectric conversion unit of a solid-state imaging device, and a first lens having a positive refractive power and a positive refractive power in order from the object side.
- a second lens having a negative refractive power, and a third lens having a negative refractive power, and the first lens is provided on at least one of a substrate portion that is a parallel plate, an object side surface and an image side surface of the substrate portion.
- a lens unit formed of a material having a different refractive index from the substrate unit, and the second lens is a single lens, and the following conditional expression: 1 ⁇ f2 / f ⁇ 20 (1)
- f2 Focal length of the second lens
- f The focal length of the entire imaging lens system is satisfied.
- the basic configuration of the present invention for obtaining a compact imaging lens with good aberration correction is, in order from the object side, a first lens having a positive refractive power, a second lens having a positive refractive power, a negative lens It consists of a third lens having refractive power.
- a positive refracting power is formed by combining the first lens and the second lens, and the third lens has a negative refracting power, so that a so-called telephoto type lens configuration can be obtained, It can be set as the structure advantageous for size reduction.
- substrate part which is a parallel plate is used for a 1st lens, after forming a 1st lens in large quantities simultaneously by the replica method, it isolate
- the first lens can be mass-produced, whereby the image pickup apparatus incorporating the image pickup lens of the present invention can achieve both cost reduction and mass productivity.
- the second lens by using a single lens for the second lens, it is possible to eliminate the restriction on the thickness of the lens portion, so it is easy to give the second lens positive refracting power, and the entire imaging lens system is a telephoto type. Therefore, the overall length of the imaging lens can be reduced.
- Conditional expression (1) defines the focal length of the second lens.
- the second lens can obtain an appropriate positive refractive index. Therefore, by sharing the positive refractive power between the first lens and the second lens, spherical aberration, The coma aberration can be corrected appropriately.
- the refractive power of the second lens is not excessively increased, and the main point position of the combination of the first lens and the second lens is prevented from moving to the image side. In addition, an increase in the total length of the imaging lens can be suppressed.
- An imaging lens according to a second aspect is the imaging lens according to the first aspect, wherein the second lens has a meniscus shape with a convex surface facing the image side, and the following conditional expression: 0.90 ⁇ r3 / r4 ⁇ 2.40 (2) However, r3: Paraxial radius of curvature of the second lens object side surface r4: Paraxial radius of curvature of the second lens image side surface is satisfied.
- Conditional expression (2) defines the paraxial radius of curvature of the object side surface and the paraxial radius of curvature of the image side surface of the second lens.
- the second lens has a strong meniscus shape with the convex surface facing the image side, and the surrounding light rays pass through a place away from the optical axis. The entire system can be easily corrected for lateral chromatic aberration and distortion.
- the lower limit of the conditional expression (2) the negative refracting power on the object side surface becomes weak and the positive refracting power on the image side surface becomes strong, so that the second lens can have a positive refracting power. It becomes possible.
- the imaging lens according to the first or second aspect wherein the lens portion on the object side surface and the lens portion on the image side surface of the first lens are formed of different materials,
- the lens portion on the object side is a plano-convex lens having a convex surface facing the object side
- the lens portion on the image side surface of the first lens is a plano-concave lens having a concave surface facing the image side.
- ⁇ 2 Satisfying the Abbe number of the d-line of the lens portion on the image side surface of the first lens.
- a so-called telephoto type lens configuration including a first lens having a positive refractive power, a second lens having a positive refractive power, and a third lens having a negative refractive power has a lens having a negative refractive power. Since there is only the third lens closest to the image side, axial chromatic aberration is often undercorrected, but the lens portion on the object side surface of the first lens portion has a positive refractive power, and the first lens portion Since the lens portion on the image side surface has a negative refractive power and further satisfies conditional expression (3), a positive lens having a small dispersion and a negative lens having a large dispersion are combined. Therefore, it is possible to obtain a higher-performance imaging lens.
- the imaging lens according to claim 4 is characterized in that, in the invention according to any one of claims 1 to 3, the second lens is made of an energy curable resin material.
- a reflow process (heating process) is performed on a substrate on which solder is previously potted, with an IC chip and other electronic components and optical elements placed on the board.
- a technology has been proposed in which an electronic component and an optical element are simultaneously mounted on a substrate by melting, it is possible to cope with a reflow process by configuring the second lens with an energy curable resin material. The mass productivity of the imaging device can be improved.
- the energy curable resin material here includes both a resin material that is cured by heat and a resin material that is cured by light.
- a resin material that is cured by heat a resin material that is cured by light.
- each type of silicone resin KER series manufactured by Shin-Etsu Chemical Co., Ltd. Mold resin and UV curable resin can be used.
- the curable resin material in the second lens is particularly preferably composed of a thermosetting resin material because the lens thickness is required.
- the size of the fine particles should be smaller than the wavelength of the transmitted light beam. Thus, substantially no scattering can occur.
- the resin material has a disadvantage that the refractive index is lower than that of the glass material, but it has been found that the refractive index can be increased by dispersing inorganic particles having a high refractive index in the resin material as a base material. Specifically, by dispersing inorganic particles of 30 nanometers or less in the resin material as the base material, preferably 20 nanometers or less, more preferably 15 nanometers or less in the resin material as the base material, A material having any temperature dependency can be provided.
- the refractive index of the resin material decreases as the temperature rises
- inorganic particles whose refractive index increases as the temperature rises are dispersed in the resin material as the base material, these properties will cancel each other. It is also known that the refractive index change with respect to the temperature change can be reduced. On the other hand, it is also known that when the inorganic particles whose refractive index decreases as the temperature rises are dispersed in the resin material as the base material, the refractive index change with respect to the temperature change can be increased.
- inorganic particles of 30 nanometers or less in the resin material as the base material preferably 20 nanometers or less, more preferably 15 nanometers or less in the resin material as the base material, A material having any temperature dependency can be provided.
- the temperature change A of the refractive index is expressed by the following equation [Equation 1] by differentiating the refractive index n by the temperature t based on the Lorentz-Lorentz equation.
- the contribution of the second term is generally smaller than the first term in the formula, and can be almost ignored.
- the contribution of the second term of the above formula is substantially increased, so as to cancel out the change due to the linear expansion of the first term. .
- the mixing ratio can be appropriately increased or decreased in order to control the rate of change of the refractive index with respect to the temperature, and a plurality of types of nano-sized inorganic particles can be blended and dispersed.
- An imaging lens according to a fifth aspect of the present invention is the imaging lens according to any one of the first to fourth aspects, wherein the third lens includes a substrate portion that is a parallel plate, an object side surface of the substrate portion, and And a lens portion formed on at least one side of the image side surface.
- the third lens is simultaneously molded in large quantities by the replica method and then separated. It is possible to mass-produce lenses, and this makes it possible to achieve both cost reduction and mass productivity of an imaging apparatus incorporating the imaging lens of the present invention.
- the imaging lens according to claim 6 is the invention according to any one of claims 1 to 4, wherein the third lens is a single lens.
- the third lens By using a single lens for the third lens, the limitation on the thickness of the lens portion, which is a problem, can be eliminated. Therefore, the degree of freedom of the shape of the third lens is increased, so that favorable aberration correction can be performed.
- the imaging lens according to claim 7 is characterized in that, in the invention according to any one of claims 1 to 6, the substrate portion is made of a glass material and the lens portion is made of a resin material. To do.
- the optical performance of the imaging lens in a high temperature environment can be maintained by forming the substrate portion from a glass material. Further, by forming the lens portion from a resin material, the processability is good and the cost can be reduced as compared with the case of using glass.
- the contact surface between the lens and air is made aspherical, the difference in refractive index is the largest and the effects of the aspherical surface can be utilized to the fullest. It is more desirable because it is easily possible.
- any of a method of directly bonding a resin to be the lens portion or indirectly bonding with a resin or the like can be employed.
- the substrate unit may also serve as an optical low-pass filter, an IR cut filter, or the like.
- the imaging lens according to claim 8 is characterized in that, in the invention according to any one of claims 1 to 7, the lens portion is made of an energy curable resin material.
- the lens part By configuring the lens part with an energy curable resin material, it becomes possible to harden the lens part in a large amount at the same time on the wafer-like substrate part using a mold, thereby improving mass productivity. become able to.
- the curable resin material is particularly preferably composed of a UV curable resin material.
- a UV curable resin material By comprising a UV curable resin material, the curing time can be shortened and the mass productivity can be improved.
- An imaging device includes an imaging lens according to any one of the first to eighth aspects, a solid-state imaging device that converts a subject image formed by the imaging lens into an electrical signal, and the like. It is characterized by having.
- a mobile terminal according to a tenth aspect has the imaging device according to the ninth aspect.
- the present invention it is possible to eliminate the constraints on the lens shape of the wafer scale lens, and to provide a mass-productive, low-cost, compact, and high-performance imaging lens, and a low-cost, compact, high-performance imaging lens including the imaging lens. It is possible to provide a simple imaging device and a portable terminal.
- FIG. 2 is a cross-sectional view of the imaging lens shown in Example 1.
- FIG. 4 is an aberration diagram (spherical aberration, astigmatism, distortion, and meridional coma) of the imaging lens illustrated in Example 1.
- 6 is a cross-sectional view of an imaging lens shown in Example 2.
- FIG. FIG. 4 is an aberration diagram (spherical aberration, astigmatism, distortion, and meridional coma) of the imaging lens illustrated in Example 1.
- 6 is an aberration diagram (spherical aberration, astigmatism, distortion, meridional coma) of the imaging lens shown in Example 2.
- 6 is a cross-sectional view of an imaging lens shown in Example 3.
- FIG. FIG. 6 is an aberration diagram (spherical aberration, astigmatism, distortion, and meridional coma) of the imaging lens illustrated in Example 3.
- 6 is a cross-sectional view of an imaging lens shown in Example 4.
- FIG. FIG. 6 is an aberration diagram (spherical aberration, astigmatism, distortion, meridional coma) of the imaging lens shown in Example 4.
- 6 is a cross-sectional view of an imaging lens shown in Example 5.
- FIG. 10 is an aberration diagram (spherical aberration, astigmatism, distortion, meridional coma) of the imaging lens shown in Example 5.
- 7 is a cross-sectional view of an imaging lens shown in Example 6.
- FIG. 10 is an aberration diagram (spherical aberration, astigmatism, distortion, and meridional coma) of the imaging lens shown in Example 6.
- 10 is a cross-sectional view of an imaging lens shown in Example 7.
- FIG. 10 is an aberration diagram (spherical aberration, astigmatism, distortion, meridional coma) of the imaging lens shown in Example 7.
- 10 is a cross-sectional view of an imaging lens shown in Example 8.
- 10 is an aberration diagram (spherical aberration, astigmatism, distortion, and meridional coma) of the imaging lens shown in Example 8.
- 10 is a cross-sectional view of an imaging lens shown in Example 9.
- FIG. 10 is an aberration diagram (spherical aberration, astigmatism, distortion, meridional coma) of the imaging lens shown in Example 9.
- 10 is a cross-sectional view of an imaging lens shown in Example 10.
- FIG. FIG. 10 is an aberration diagram (spherical aberration, astigmatism, distortion, meridional coma) of the imaging lens shown in Example 10.
- FIG. 1 is a perspective view of an imaging device 50 according to the present embodiment
- FIG. 2 is a diagram schematically showing a cross section along the optical axis of the imaging lens of the imaging device 50 according to the present embodiment. is there.
- the imaging device 50 includes an imaging lens 10 that forms a subject image on a photoelectric conversion unit of the imaging element, a casing 53 that is a lens barrel made of a light shielding member, and a support that holds the imaging element 51.
- a substrate 52a and a flexible printed circuit board 52b having an external connection terminal (also referred to as an external connection terminal) 54 for transmitting and receiving the electrical signal are provided, and these are integrally formed.
- the CMOS type image pickup device 51 has a photoelectric conversion portion 51a as a light receiving portion in which pixels (photoelectric conversion elements) are two-dimensionally arranged at the center of the light receiving side surface.
- a signal processing circuit 51b is formed around the periphery.
- the signal processing circuit 51b includes a driving circuit unit that sequentially drives each pixel to obtain a signal charge, an A / D conversion unit that converts each signal charge into a digital signal, and a signal that forms an image signal output using the digital signal. It consists of a processing unit and the like.
- a large number of pads are provided in the vicinity of the outer edge of the light receiving side surface of the image sensor 51 and are connected to the support substrate 52a via bonding wires W.
- the image sensor 51 converts the signal charge from the photoelectric conversion unit 51a into an image signal such as a digital YUV signal and outputs the image signal to a predetermined circuit on the support substrate 52a through the bonding wire W.
- Y is a luminance signal
- the imaging element is not limited to the above-described CMOS type image sensor, and may be one to which another type such as a CCD type image sensor is applied.
- One end of the substrate 52 is connected to the other surface of the support substrate 52a (the surface opposite to the image sensor 51) of the hard support substrate 52a that supports the image sensor 51 and the housing 53 on one surface. It is comprised with the flexible printed circuit board 52b.
- the support substrate 52a is provided with a large number of signal transmission pads on both the front and back surfaces, and is connected to the imaging device 51 via bonding wires W on one surface and to the flexible printed circuit board 52b on the other surface. .
- the flexible printed circuit board 52b is connected to the support substrate 52a at one end and is connected to the support substrate 52a and an external circuit (not shown) via an external connection terminal 54 provided at the other end (for example, A control circuit included in a host device on which the image pickup apparatus is mounted), a voltage and a clock signal for driving the image pickup device 51 are supplied from an external circuit, and a digital YUV signal is output to the external circuit. It is possible to do. Further, the flexible printed circuit board 52b has flexibility and an intermediate portion is deformed to give a degree of freedom to the orientation and arrangement of the external connection terminals 54 with respect to the support board 52a.
- the housing 53 is fixedly disposed so as to cover the image sensor 51 on the surface of the support substrate 52 a on the image sensor 51 side. That is, the housing 53 is formed to have a wide opening on the image sensor 51 side so as to surround the image sensor 51 and contact and be fixed to the support substrate 52a, and the other end portion having a small opening.
- an infrared light cut filter F is fixedly disposed between the imaging lens 10 and the imaging element 51.
- the imaging lens 10 includes a first lens L1 having a positive refractive power, a second lens L2 having a positive refractive power, and a third lens L3 having a negative refractive power.
- the first lens L1 includes a lens portion L1a formed on the object side surface of the substrate portion L1b, which is a parallel plate, and a lens portion L1c formed on the image side surface.
- the second lens L2 is a single lens
- the third lens L3 includes a lens portion L3a formed on the object side surface of the substrate portion L3b, which is a parallel plate, and a lens portion L3c formed on the image side surface.
- the third lens L3 may be a single lens.
- the upper side of the drawing is the object side
- the lower side of the drawing is the image side.
- the lenses L1 to L3 constituting the imaging lens 10 are held by a lens frame 55.
- the housing 53 includes the lens frame 55 and the imaging lens 10 held by the lens frame 55, and the lens frame 55 is a flange portion that is fitted to the housing 53 on the outer periphery and has a small opening of the housing 53. It is abutted and positioned.
- a fixed diaphragm for cutting unnecessary light is disposed between each of the lenses L1 to L3 and the lens L3 and the infrared light cut filter F.
- FIG. 3 is an external view of a mobile phone 100 which is an example of a mobile terminal provided with the imaging device 50 according to the present embodiment.
- an upper casing 71 as a case having display screens D1 and D2 and a lower casing 72 having an operation button 60 as an input unit are connected via a hinge 73.
- the imaging device 50 is built below the display screen D ⁇ b> 2 in the upper casing 71, and is arranged so that the imaging device 50 can capture light from the outer surface side of the upper casing 71.
- this imaging device may be arranged above or on the side of the display screen D2 in the upper casing 71.
- the mobile phone is not limited to a folding type.
- FIG. 4 is a diagram illustrating an example of a control block of the mobile phone 100.
- the imaging device 50 is connected to the control unit 101 of the mobile phone 100 via the flexible printed circuit board 52b, and outputs image signals such as luminance signals and color difference signals to the control unit 101.
- the mobile phone 100 controls each part in an integrated manner, and also executes a control part (CPU) 101 that executes a program corresponding to each process, an operation button 60 that is an input part for inputting a number and the like, Display screens D1 and D2 for displaying predetermined data and captured images, a wireless communication unit 80 for realizing various information communications with an external server, a system program for mobile phone 100, various processing programs, and a terminal
- a storage unit (ROM) 91 that stores necessary data such as an ID, and various processing programs and data executed by the control unit 101 or processing data, image data from the imaging device 50, and the like are temporarily stored.
- a temporary storage unit (RAM) 92 used as a work area.
- the image signal input from the imaging device 50 is stored in the nonvolatile storage unit (flash memory) 93 by the control unit 101 of the mobile phone 100, or displayed on the display screens D1 and D2, and further, The image information is transmitted to the outside via the wireless communication unit 80.
- the mobile phone 100 includes a microphone and a speaker for inputting and outputting audio.
- f focal length of the entire imaging lens system
- fB back focus
- ENTP entrance pupil position (distance from the first surface to the entrance pupil)
- EXTP Exit pupil position (distance from image plane to exit pupil)
- H1 Front principal point position (distance from the first surface to the front principal point)
- H2 Rear principal point position (distance from the final surface to the rear principal point)
- R radius of curvature of refracting surface
- D spacing between upper surface of axis
- Nd refractive index of lens material d-line at normal temperature
- ⁇ d Abbe number of lens material
- the X axis is taken as the axial direction, and the height in the direction perpendicular to
- a power of 10 (for example, 2.5 ⁇ 10 ⁇ 02 ) is represented by using E (for example, 2.5E-02).
- E for example, 2.5E-02
- the surface number of the lens data was given in order with the object side of the first lens as one surface.
- the unit of the numerical value showing the length as described in an Example shall be (mm).
- FIG. 5 is a cross-sectional view of the imaging lens shown in Example 1.
- the first lens L1, the second lens L2, the third lens L3, an optical low-pass filter, an IR cut filter, a parallel flat plate F assuming a solid-state image sensor sealing glass, etc. solid-state imaging It consists of the imaging surface I of the element.
- the first lens L1 is a lens block including, in order from the object side along the optical axis, an object side lens portion L1a, an aperture stop S, a substrate portion L1b, and an image side lens portion L1c.
- L2 is a single lens
- the third lens L3 is a lens block including an object side lens portion L3a, a substrate portion L3b, and an image side lens portion L3c in order from the object side along the optical axis.
- Example 1 the aperture stop S is bonded between the object-side lens portion L1a and the substrate portion L1b of the first lens.
- FIG. 6 is an aberration diagram (spherical aberration, astigmatism, distortion, and meridional coma aberration) of the imaging lens shown in Example 1.
- the solid line represents the d line and the dotted line represents the g line
- the solid line represents the sagittal image plane and the dotted line represents the meridional image plane. It shall be expressed.
- Example 2 The overall specifications of the imaging lens of Example 2 are shown below.
- ENTP 0.15mm
- the surface data of the imaging lens of Example 2 is shown below.
- FIG. 7 is a cross-sectional view of the imaging lens shown in Example 2.
- the first lens L1, the second lens L2, the third lens L3, an optical low-pass filter, an IR cut filter, a parallel flat plate F assuming a solid-state image sensor sealing glass, etc. solid-state imaging It consists of the imaging surface I of the element.
- the first lens L1 is a lens block including, in order from the object side along the optical axis, an object side lens portion L1a, an aperture stop S, a substrate portion L1b, and an image side lens portion L1c.
- L2 is a single lens
- the third lens L3 is a lens block including an object side lens portion L3a, a substrate portion L3b, and an image side lens portion L3c in order from the object side along the optical axis.
- FIG. 8 is an aberration diagram (spherical aberration, astigmatism, distortion aberration, meridional coma aberration) of the imaging lens shown in Example 2.
- FIG. 9 is a cross-sectional view of the imaging lens shown in Example 3.
- the first lens L1, the second lens L2, the third lens L3, an optical low-pass filter, an IR cut filter, a parallel flat plate F assuming a solid-state image sensor sealing glass, etc. solid-state imaging It consists of the imaging surface I of the element.
- the first lens L1 is a lens block including, in order from the object side along the optical axis, an object side lens portion L1a, an aperture stop S, a substrate portion L1b, and an image side lens portion L1c.
- L2 is a single lens
- the third lens L3 is a lens block including an object side lens portion L3a, a substrate portion L3b, and an image side lens portion L3c in order from the object side along the optical axis.
- FIG. 10 is an aberration diagram (spherical aberration, astigmatism, distortion, meridional coma) of the imaging lens shown in Example 3.
- FIG. 11 is a cross-sectional view of the imaging lens shown in Example 4.
- the first lens L1, the second lens L2, the third lens L3, an optical low-pass filter, an IR cut filter, a parallel flat plate F assuming a solid-state image sensor sealing glass, etc. solid-state imaging It consists of the imaging surface I of the element.
- the first lens L1 is a lens block including, in order from the object side along the optical axis, an object side lens portion L1a, an aperture stop S, a substrate portion L1b, and an image side lens portion L1c.
- L2 is a single lens
- the third lens L3 is a lens block including an object side lens portion L3a, a substrate portion L3b, and an image side lens portion L3c in order from the object side along the optical axis.
- FIG. 12 is an aberration diagram (spherical aberration, astigmatism, distortion, and meridional coma aberration) of the imaging lens shown in Example 4.
- FIG. 13 is a cross-sectional view of the imaging lens shown in Example 5.
- the first lens L1, the second lens L2, the third lens L3, an optical low-pass filter, an IR cut filter, a parallel flat plate F assuming a solid-state image sensor sealing glass, etc. solid-state imaging It consists of the imaging surface I of the element.
- the first lens L1 is a lens block including, in order from the object side along the optical axis, an object side lens portion L1a, an aperture stop S, a substrate portion L1b, and an image side lens portion L1c.
- L2 is a single lens
- the third lens L3 is a lens block including an object side lens portion L3a, a substrate portion L3b, and an image side lens portion L3c in order from the object side along the optical axis.
- FIG. 14 is an aberration diagram (spherical aberration, astigmatism, distortion, and meridional coma aberration) of the imaging lens shown in Example 5.
- FIG. 15 is a cross-sectional view of the imaging lens shown in Example 6.
- the first lens L1, the second lens L2, the third lens L3, an optical low-pass filter, an IR cut filter, a parallel flat plate F assuming a solid-state image sensor sealing glass, etc. solid-state imaging It consists of the imaging surface I of the element.
- the first lens L1 is a lens block including, in order from the object side along the optical axis, an object side lens portion L1a, an aperture stop S, a substrate portion L1b, and an image side lens portion L1c. Both L2 and the third lens L3 are single lenses.
- FIG. 16 is an aberration diagram (spherical aberration, astigmatism, distortion, and meridional coma) of the imaging lens shown in Example 6.
- FIG. 17 is a cross-sectional view of the imaging lens shown in Example 7.
- the first lens L1, the second lens L2, the third lens L3, an optical low-pass filter, an IR cut filter, a parallel flat plate F assuming a solid-state image sensor sealing glass, etc. solid-state imaging It consists of the imaging surface I of the element.
- the first lens L1 is a lens block including, in order from the object side along the optical axis, an object side lens portion L1a, an aperture stop S, a substrate portion L1b, and an image side lens portion L1c. Both L2 and the third lens L3 are single lenses.
- FIG. 18 is an aberration diagram (spherical aberration, astigmatism, distortion, meridional coma aberration) of the imaging lens shown in Example 7.
- FIG. 19 is a cross-sectional view of the imaging lens shown in Example 8.
- the first lens L1, the second lens L2, the third lens L3, an optical low-pass filter, an IR cut filter, a parallel flat plate F assuming a solid-state image sensor sealing glass, etc. solid-state imaging It consists of the imaging surface I of the element.
- the first lens L1 is a lens block including, in order from the object side along the optical axis, an object side lens portion L1a, an aperture stop S, a substrate portion L1b, and an image side lens portion L1c. Both L2 and the third lens L3 are single lenses.
- FIG. 20 is an aberration diagram (spherical aberration, astigmatism, distortion, and meridional coma) of the imaging lens shown in Example 8.
- FIG. 21 is a cross-sectional view of the imaging lens shown in Example 9. Parallel plates assuming an aperture stop S, a first lens L1, a second lens L2, a third lens L3, an optical low-pass filter, an IR cut filter, a seal glass for a solid-state image sensor, and the like in order from the object side along the optical axis.
- F the imaging surface I of the solid-state imaging device.
- the first lens L1 is a lens block including an object-side lens portion L1a, a substrate portion L1b, and an image-side lens portion L1c in order from the object side along the optical axis
- the second lens L2 is a single lens.
- the third lens L3 is a lens block including an object side lens portion L3a, a substrate portion L3b, and an image side lens portion L3c in order from the object side along the optical axis.
- Example 9 the aperture stop S is arranged on the most object side. With such a configuration, the exit pupil moves to the object side, so that the angle of the light beam incident on the solid-state imaging device can be reduced.
- FIG. 22 is an aberration diagram (spherical aberration, astigmatism, distortion, meridional coma aberration) of the imaging lens shown in Example 9.
- FIG. 23 is a cross-sectional view of the imaging lens shown in Example 10.
- a parallel plate assuming an aperture stop S, a first lens L1, a second lens L2, a third lens L3, an optical low-pass filter, an IR cut filter, a seal glass of a solid-state image sensor, and the like in order from the object side along the optical axis.
- F the imaging surface I of the solid-state imaging device.
- the first lens L1 is a lens block including an object side lens portion L1a and a substrate portion L1b in order from the object side along the optical axis.
- Both the second lens L2 and the third lens L3 are single lenses. It is a lens.
- FIG. 24 is an aberration diagram of the imaging lens shown in Example 10 (spherical aberration, astigmatism, distortion, and meridional coma).
- the lens portion is formed on both the object side and the image plane side of the substrate portion of the first lens L1, and in the tenth embodiment, the substrate portion of the first lens L1. Although the lens portion is formed only on the object side, it is needless to say that the lens portion may be formed only on the image surface side of the substrate portion of the first lens L1.
Abstract
Description
1<f2/f<20 (1)
ただし、
f2:前記第2レンズの焦点距離
f:撮像レンズ全系の焦点距離
を満足することを特徴とする。
3<f2/f<15 (1’)
を満たすと、さらに望ましい。
0.90<r3/r4<2.40 (2)
ただし、
r3:前記第2レンズ物体側面の近軸曲率半径
r4:前記第2レンズ像側面の近軸曲率半径
を満足することを特徴とする。
0.9<r3/r4<1.5 (2’)
を満たすと、さらに望ましい。
10<ν1-ν2<70 (3)
ただし、
ν1:前記第1レンズの物体側面のレンズ部のd線のアッベ数
ν2:前記第1レンズの像側面のレンズ部のd線のアッベ数
を満足することを特徴とする。
10<ν1-ν2<40 (3’)
を満たすと、さらに望ましい。
f :撮像レンズ全系の焦点距離
fB:バックフォーカス
F :Fナンバー
2Y:固体撮像素子の撮像面対角線長(固体撮像素子の矩形実効画素領域の対角線長)
ENTP:入射瞳位置(第1面から入射瞳までの距離)
EXTP:射出瞳位置(像面から射出瞳までの距離)
H1:前側主点位置(第1面から前側主点までの距離)
H2:後側主点位置(最終面から後側主点までの距離)
R :屈折面の曲率半径
D :軸上面間隔
Nd:レンズ材料のd線の常温での屈折率
νd:レンズ材料のアッベ数
各実施例において非球面の形状は、面の頂点を原点とし、光軸方向にX軸をとり、光軸と垂直方向の高さをhとして、以下の(数2)で表す。
Ai:i次の非球面係数
R :曲率半径
K :円錐定数
である。
実施例1の撮像レンズの全体諸元を以下に示す。
f=2.74mm
fB=0.17mm
F=2.88
2Y=3.5mm
ENTP=0.18mm
EXTP=-1.75mm
H1=-1.00mm
H2=-2.57mm
実施例1の撮像レンズの面データを以下に示す。
面番号 R(mm) D(mm) Nd νd 有効半径(mm)
1* 0.861 0.250 1.51400 58.1 0.51
2(絞り) ∞ 0.300 1.64920 29.9 0.45
3 ∞ 0.050 1.51400 58.1 0.48
4* 1.821 0.493 0.48
5* -1.314 0.465 1.52640 53.8 0.59
6* -1.344 0.406 0.80
7* 1.542 0.083 1.51400 58.1 1.23
8 ∞ 0.300 1.47400 56.4 1.32
9 ∞ 0.127 1.51400 58.1 1.47
10* 0.955 0.265 1.52
11 ∞ 0.300 1.51630 64.1 1.63
12 ∞ 1.70
非球面係数を以下に示す。
第1面
K=0.44870E+00,A4=-0.31844E-01,A6=-0.63134E-02,A8=-0.36913E+00,
A10=0.61429E+00
第4面
K=0.88269E+01,A4=0.91256E-01,A6=0.25991E+00,A8=-0.15519E+01,
A10=0.96274E+01
第5面
K=0.11098E+01,A4=-0.48314E+00,A6=-0.36282E+00,A8=-0.45625E-01,
A10=0.25632E+01,A12=-0.36783E+02,A14=0.96597E+02
第6面
K=0.13715E+01,A4=-0.50337E+00,A6=0.82425E+00,A8=-0.91265E+00,
A10=0.15890E+00,A12=0.98458E+00,A14=0.62717E+00
第7面
K=-0.12236E+02,A4=-0.54692E+00,A6=0.33789E+00,A8=-0.67237E-02,
A10=-0.50642E-01,A12=0.11970E-01
第10面
K=-0.57937E+01,A4=-0.19051E+00,A6=0.85532E-01,A8=-0.45603E-01,
A10=0.16487E-01,A12=-0.23766E-02
実施例1の撮像レンズの単レンズデータを以下に示す。
レンズ 始面 焦点距離(mm)
1 1 2.640
2 5 25.617
3 7 -6.966
実施例1では、基板部に形成されたレンズ部は全て同一の樹脂材料である。
実施例2の撮像レンズの全体諸元を以下に示す。
f=2.44mm
fB=0.20mm
F=2.88
2Y=3.5mm
ENTP=0.15mm
EXTP=-1.80mm
H1=-0.39mm
H2=-2.24mm
実施例2の撮像レンズの面データを以下に示す。
面番号 R(mm) D(mm) Nd νd 有効半径(mm)
1* 0.894 0.211 1.51400 58.1 0.46
2(絞り) ∞ 0.300 1.64920 29.9 0.41
3 ∞ 0.050 1.51400 58.1 0.45
4* 2.024 0.440 0.47
5* -1.321 0.551 1.52640 53.8 0.58
6* -1.437 0.262 0.82
7* 1.011 0.193 1.51400 58.1 1.24
8 ∞ 0.300 1.47400 56.4 1.34
9 ∞ 0.052 1.51400 58.1 1.47
10* 0.807 0.365 1.54
11 ∞ 0.200 1.51630 64.1 1.64
12 ∞ 1.69
非球面係数を以下に示す。
第1面
K=0.45017E+00,A4=0.30147E-01,A6=-0.41257E+00,A8=0.20135E+01,
A10=-0.30301E+01
第4面
K=0.75842E+01,A4=0.16963E+00,A6=0.83981E-01,A8=0.22278E+00,
A10=0.80664E+01
第5面
K=0.87857E+00,A4=-0.30782E+00,A6=-0.94141E+00,A8=0.81061E-01,
A10=0.37374E+01,A12=-0.33952E+02,A14=0.95374E+02
第6面
K=0.16116E+01,A4=-0.71400E+00,A6=0.11970E+01,A8=-0.11439E+01,
A10=-0.24877E+00,A12=0.89988E+00,A14=0.10351E+01
第7面
K=-0.62062E+01,A4=-0.55124E+00,A6=0.33117E+00,A8=-0.46084E-02,
A10=-0.50008E-01,A12=0.11666E-01
第10面
K=-0.40471E+01,A4=-0.21565E+00,A6=0.11138E+00,A8=-0.53388E-01,
A10=0.16442E-01,A12=-0.21473E-02
実施例2の撮像レンズの単レンズデータを以下に示す。
レンズ 始面 焦点距離(mm)
1 1 2.683
2 5 48.308
3 7 -100.000
実施例2では、基板部に形成されたレンズ部は全て同一の樹脂材料である。
実施例3の撮像レンズの全体諸元を以下に示す。
f=2.75mm
fB=0.13mm
F=2.88
2Y=3.5mm
ENTP=0.18mm
EXTP=-1.70mm
H1=-1.20mm
H2=-2.62mm
実施例3の撮像レンズの面データを以下に示す。
面番号 R(mm) D(mm) Nd νd 有効半径(mm)
1* 0.867 0.248 1.51400 58.1 0.51
2(絞り) ∞ 0.300 1.64920 29.9 0.46
3 ∞ 0.050 1.51400 58.1 0.48
4* 1.856 0.489 0.49
5* -1.345 0.465 1.52640 53.8 0.59
6* -1.316 0.449 0.79
7* 1.723 0.071 1.54000 33.0 1.21
8 ∞ 0.300 1.47400 56.4 1.31
9 ∞ 0.145 1.54000 33.0 1.46
10* 0.955 0.265 1.52
11 ∞ 0.300 1.51630 64.1 1.64
12 ∞ 1.71
非球面係数を以下に示す。
第1面
K=0.53060E+00,A4=-0.33357E-01,A6=-0.18963E+00,A8=0.39189E+00,
A10=-0.98600E+00
第4面
K=0.94031E+01,A4=0.81077E-01,A6=0.21547E+00,A8=-0.12419E+01,
A10=0.79908E+01
第5面
K=0.81318E+00,A4=-0.50869E+00,A6=-0.46199E+00,A8=-0.27616E+00,
A10=0.43326E+01,A12=-0.36006E+02,A14=0.89605E+02
第6面
K=0.13201E+01,A4=-0.48294E+00,A6=0.77789E+00,A8=-0.94223E+00,
A10=0.26206E+00,A12=0.10661E+01,A14=0.66725E+00
第7面
K=-0.14333E+02,A4=-0.57612E+00,A6=0.35740E+00,A8=-0.65375E-02,
A10=-0.54557E-01,A12=0.12860E-01
第10面
K=-0.60620E+01,A4=-0.20236E+00,A6=0.94998E-01,A8=-0.49810E-01,
A10=0.17780E-01,A12=-0.25558E-02
実施例3の撮像レンズの単レンズデータを以下に示す。
レンズ 始面 焦点距離(mm)
1 1 2.646
2 5 17.714
3 7 -5.227
実施例3では、第1レンズの基板部に形成されたレンズ部と、第3レンズの基板部に形成されたレンズ部は、異なる樹脂材料で形成されている。
実施例4の撮像レンズの全体諸元を以下に示す。
f=2.73mm
fB=0.21mm
F=2.88
2Y=3.5mm
ENTP=0.16mm
EXTP=-1.75mm
H1=-0.90mm
H2=-2.52mm
実施例4の撮像レンズの面データを以下に示す。
面番号 R(mm) D(mm) Nd νd 有効半径(mm)
1* 0.863 0.227 1.51400 58.1 0.50
2(絞り) ∞ 0.300 1.47400 56.4 0.46
3 ∞ 0.050 1.54000 33.0 0.48
4* 1.829 0.492 0.49
5* -1.423 0.462 1.52640 53.8 0.60
6* -1.427 0.374 0.81
7* 1.389 0.093 1.51400 58.1 1.22
8 ∞ 0.300 1.64920 29.9 1.32
9 ∞ 0.128 1.51400 58.1 1.44
10* 0.925 0.265 1.50
11 ∞ 0.300 1.51630 64.1 1.60
12 ∞ 1.68
非球面係数を以下に示す。
第1面
K=0.45502E+00,A4=-0.54218E-01,A6=0.15189E+00,A8=-0.10462E+01,
A10=0.14234E+01
第4面
K=0.88425E+01,A4=0.73120E-01,A6=0.37798E+00,A8=-0.18936E+01,
A10=0.84286E+01
第5面
K=0.12639E+01,A4=-0.40123E+00,A6=-0.46630E+00,A8=0.13767E-01,
A10=0.40622E+01,A12=-0.34594E+02,A14=0.75112E+02
第6面
K=0.16071E+01,A4=-0.50002E+00,A6=0.79076E+00,A8=-0.82493E+00,
A10=0.97876E-01,A12=0.77650E+00,A14=0.58826E+00
第7面
K=-0.92483E+01,A4=-0.55329E+00,A6=0.32538E+00,A8=-0.30038E-02,
A10=-0.48565E-01,A12=0.11385E-01
第10面
K=-0.50854E+01,A4=-0.21838E+00,A6=0.10910E+00,A8=-0.53425E-01,
A10=0.15874E-01,A12=-0.19058E-02
実施例4の撮像レンズの単レンズデータを以下に示す。
レンズ 始面 焦点距離(mm)
1 1 2.717
2 5 24.797
3 7 -8.464
実施例4では、第1レンズにおいて基板部に形成された物体側のレンズ部と像側のレンズ部は異なる樹脂材料で形成されている。
実施例5の撮像レンズの全体諸元を以下に示す。
f=2.75mm
fB=0.16mm
F=2.88
2Y=3.5mm
ENTP=0.18mm
EXTP=-1.73mm
H1=-1.07mm
H2=-2.59mm
実施例5の撮像レンズの面データを以下に示す。
面番号 R(mm) D(mm) Nd νd 有効半径(mm)
1* 0.863 0.248 1.51400 58.1 0.51
2(絞り) ∞ 0.300 1.64920 29.9 0.45
3 ∞ 0.050 1.51400 58.1 0.47
4* 1.834 0.487 0.48
5* -1.335 0.469 1.52640 53.8 0.59
6* -1.294 0.419 0.80
7* 1.846 0.067 1.54000 33.0 1.20
8 ∞ 0.300 1.47400 56.4 1.30
9 ∞ 0.148 1.51400 58.1 1.45
10* 0.982 0.265 1.50
11 ∞ 0.300 1.51630 64.1 1.62
12 ∞ 1.70
非球面係数を以下に示す。
第1面
K=0.58311E+00,A4=-0.54768E-01,A6=-0.14172E+00,A8=0.14447E+00,
A10=-0.10370E+01
第4面
K=0.92173E+01,A4=0.79230E-01,A6=0.21572E+00,A8=-0.11343E+01,
A10=0.78484E+01
第5面
K=0.85946E+00,A4=-0.51625E+00,A6=-0.39987E+00,A8=-0.30533E+00,
A10=0.41271E+01,A12=-0.37229E+02,A14=0.93731E+02
第6面
K=0.12394E+01,A4=-0.48765E+00,A6=0.80583E+00,A8=-0.95975E+00,
A10=0.25339E+00,A12=0.11278E+01,A14=0.58523E+00
第7面
K=-0.17906E+02,A4=-0.55729E+00,A6=0.35754E+00,A8=-0.10052E-01,
A10=-0.55453E-01,A12=0.13631E-01
第10面
K=-0.62139E+01,A4=-0.19470E+00,A6=0.89227E-01,A8=-0.49374E-01,
A10=0.18147E-01,A12=-0.26270E-02
実施例5の撮像レンズの単レンズデータを以下に示す。
レンズ 始面 焦点距離(mm)
1 1 2.642
2 5 16.228
3 7 -5.612
実施例5では、第3レンズにおいて基板部に形成された物体側のレンズ部と像側のレンズ部は異なる樹脂材料で形成されている。
実施例6の撮像レンズの全体諸元を以下に示す。
f=2.75mm
fB=0.11mm
F=2.88
2Y=3.5mm
ENTP=0.18mm
EXTP=-1.63mm
H1=-1.41mm
H2=-2.63mm
実施例6の撮像レンズの面データを以下に示す。
面番号 R(mm) D(mm) Nd νd 有効半径(mm)
1* 0.877 0.242 1.51400 58.1 0.51
2(絞り) ∞ 0.300 1.64920 29.9 0.46
3 ∞ 0.050 1.51400 58.1 0.48
4* 1.924 0.506 0.49
5* -1.512 0.538 1.52640 53.8 0.61
6* -1.323 0.499 0.83
7* 1.505 0.400 1.63200 23.4 1.23
8* 0.823 0.265 1.50
9 ∞ 0.300 1.51630 64.1 1.64
10 ∞ 1.72
非球面係数を以下に示す。
第1面
K=0.75160E+00,A4=-0.69312E-01,A6=-0.30162E+00,A8=0.57902E+00,
A10=-0.25287E+01
第4面
K=0.10091E+02,A4=0.81654E-01,A6=0.30135E+00,A8=-0.15402E+01,
A10=0.77679E+01
第5面
K=-0.46562E+00,A4=-0.48486E+00,A6=-0.51244E+00,A8=0.45175E-01,
A10=0.60681E+01,A12=-0.37256E+02,A14=0.72437E+02
第6面
K=0.74923E+00,A4=-0.42849E+00,A6=0.72937E+00,A8=-0.10055E+01,
A10=0.33094E+00,A12=0.11197E+01,A14=-0.32574E+00
第7面
K=-0.16759E+02,A4=-0.62532E+00,A6=0.36215E+00,A8=0.33901E-03,
A10=-0.54081E-01,A12=0.12256E-01
第8面
K=-0.70066E+01,A4=-0.25128E+00,A6=0.12397E+00,A8=-0.56186E-01,
A10=0.17834E-01,A12=-0.24093E-02
実施例6の撮像レンズの単レンズデータを以下に示す。
レンズ 始面 焦点距離(mm)
1 1 2.648
2 5 10.128
3 7 -3.722
実施例6では、基板部に形成されたレンズ部は全て同一の樹脂材料で形成されている。
実施例7の撮像レンズの全体諸元を以下に示す。
f=2.78mm
fB=0.12mm
F=2.88
2Y=3.5mm
ENTP=0.18mm
EXTP=-1.70mm
H1=-1.31mm
H2=-2.67mm
実施例7の撮像レンズの面データを以下に示す。
面番号 R(mm) D(mm) Nd νd 有効半径(mm)
1* 0.852 0.250 1.51400 58.1 0.51
2(絞り) ∞ 0.300 1.64920 29.9 0.46
3 ∞ 0.050 1.54000 33.0 0.48
4* 1.927 0.484 0.48
5* -1.449 0.557 1.52640 53.8 0.60
6* -1.310 0.485 0.84
7* 1.784 0.400 1.54700 56.0 1.23
8* 0.896 0.265 1.50
9 ∞ 0.300 1.51630 64.1 1.64
10 ∞ 1.71
非球面係数を以下に示す。
第1面
K=0.77589E+00,A4=-0.89634E-01,A6=-0.36079E+00,A8=0.93422E+00,
A10=-0.43858E+01
第4面
K=0.10578E+02,A4=0.74619E-01,A6=0.45346E+00,A8=-0.22408E+01,
A10=0.10808E+02
第5面
K=-0.94671E+00,A4=-0.50836E+00,A6=-0.27534E+00,A8=-0.44126E+00,
A10=0.47189E+01,A12=-0.26483E+02,A14=0.60369E+02
第6面
K=0.71531E+00,A4=-0.35633E+00,A6=0.69867E+00,A8=-0.10219E+01,
A10=0.52662E+00,A12=0.12897E+01,A14=-0.80978E+00
第7面
K=-0.23848E+02,A4=-0.62334E+00,A6=0.37834E+00,A8=-0.22158E-02,
A10=-0.56302E-01,A12=0.12837E-01
第8面
K=-0.67701E+01,A4=-0.24272E+00,A6=0.12012E+00,A8=-0.57743E-01,
A10=0.18580E-01,A12=-0.24483E-02
実施例7の撮像レンズの単レンズデータを以下に示す。
レンズ 始面 焦点距離(mm)
1 1 2.583
2 5 10.889
3 7 -3.915
実施例7では、第1レンズにおいて基板部に形成された物体側のレンズ部と像側のレンズ部は異なる樹脂材料で形成されている。
実施例8の撮像レンズの全体諸元を以下に示す。
f=2.46mm
fB=0.20mm
F=2.88
2Y=3.5mm
ENTP=0.14mm
EXTP=-1.62mm
H1=-0.71mm
H2=-2.26mm
実施例8の撮像レンズの面データを以下に示す。
面番号 R(mm) D(mm) Nd νd 有効半径(mm)
1* 0.946 0.201 1.51400 58.1 0.46
2(絞り) ∞ 0.300 1.64920 29.9 0.41
3 ∞ 0.050 1.51400 58.1 0.46
4* 2.286 0.459 0.48
5* -2.341 0.890 1.52640 53.8 0.63
6* -0.995 0.200 0.93
7* 1.718 0.400 1.63200 23.4 1.13
8* 0.696 0.315 1.48
9 ∞ 0.200 1.51630 64.1 1.62
10 ∞ 1.67
非球面係数を以下に示す。
第1面
K=0.93086E+00,4=-0.44171E-01,A6=-0.32720E+00,A8=0.66567E+00,
A10=-0.14742E+01
第4面
K=0.90114E+01,A4=0.14931E+00,A6=0.39723E+00,A8=-0.94261E+00,
A10=0.64118E+01
第5面
K=-0.80161E+01,A4=-0.26422E+00,A6=-0.91341E+00,A8=-0.37717E+00,
A10=0.10403E+02,A12=-0.32261E+02,A14=0.38107E+02
第6面
K=-0.38908E+00,A4=-0.36779E+00,A6=0.74698E+00,A8=-0.88300E+00,
A10=0.26488E-01,A12=0.69897E+00,A14=-0.22672E+00
第7面
K=-0.30000E+02,A4=-0.84056E+00,A6=0.55177E+00,A8=-0.17421E-01,
A10=-0.82653E-01,A12=0.17336E-01
第8面
K=-0.54862E+01,A4=-0.29700E+00,A6=0.17929E+00,A8=-0.85911E-01,
A10=0.26154E-01,A12=-0.34755E-02
実施例8の撮像レンズの単レンズデータを以下に示す。
レンズ 始面 焦点距離(mm)
1 1 2.758
2 5 2.675
3 7 -2.182
実施例8では、基板部に形成されたレンズ部は全て同一の樹脂材料で形成されている。
実施例9の撮像レンズの全体諸元を以下に示す。
f=2.43mm
fB=0.28mm
F=2.88
2Y=3.5mm
ENTP=0.00mm
EXTP=-1.92mm
H1=-0.25mm
H2=-2.15mm
実施例9の撮像レンズの面データを以下に示す。
面番号 R(mm) D(mm) Nd νd 有効半径(mm)
1(絞り) ∞ 0.00 0.42
2* 0.977 0.24 1.51400 58.1 0.55
3 ∞ 0.30 1.64920 29.9 0.55
4 ∞ 0.05 1.51400 58.1 0.56
5* 2.278 0.47 0.57
6* -1.382 0.52 1.52640 53.8 0.64
7* -1.301 0.24 0.84
8* 0.945 0.14 1.51400 58.1 1.25
9 ∞ 0.30 1.47400 56.4 1.30
10 ∞ 0.05 1.51400 58.1 1.43
11* 0.742 0.36 1.52
12 ∞ 0.20 1.51630 64.1 1.60
13 ∞ 1.65
非球面係数を以下に示す。
第2面
K=0.44598E+00,A4=-0.12396E-01,A6=-0.52445E-01,A8=0.59125E+00,
A10=-0.13628E+01
第5面
K=0.74954E+01,A4=0.11000E+00,A6=0.41812E+00,A8=-0.18798E+01,
A10=0.63713E+01
第6面
K=-0.11862E+00,A4=-0.23201E+00,A6=-0.11420E+01,A8=0.87337E+00,
A10=0.60871E+01,A12=-0.36147E+02,A14=0.59522E+02
第7面
K=0.10043E+01,A4=-0.66616E+00,A6=0.11882E+01,A8=-0.11295E+01,
A10=-0.27088E+00,A12=0.79058E+00,A14=0.90501E+00
第8面
K=-0.58791E+01,A4=-0.53061E+00,A6=0.31852E+00,A8=-0.61982E-02,
A10=-0.48763E-01,A12=0.11672E-01
第11面
K=-0.34884E+01,A4=-0.24850E+00,A6=0.13757E+00,A8=-0.58057E-01,
A10=0.15655E-01,A12=-0.19621E-02
実施例9の撮像レンズの単レンズデータを以下に示す。
レンズ 始面 焦点距離(mm)
1 2 3.135
2 6 13.143
3 8 -39.847
実施例9では、基板部に形成されたレンズ部は全て同一の樹脂材料である。
実施例10の撮像レンズの全体諸元を以下に示す。
f=2.63mm
fB=0.37mm
F=2.88
2Y=3.5mm
ENTP=0.09mm
EXTP=-1.78mm
H1=-0.49mm
H2=-2.25mm
実施例10の撮像レンズの面データを以下に示す。
面番号 R(mm) D(mm) Nd νd 有効半径(mm)
1* 1.588 0.129 1.51400 58.1 0.48
2(絞り) ∞ 0.350 1.64920 29.9 0.45
3 ∞ 0.653 0.54
4* -2.128 0.615 1.52640 53.8 0.74
5* -1.452 0.220 0.88
6* 1.709 0.655 1.63200 23.4 1.02
7* 0.975 0.315 1.44
8 ∞ 0.200 1.51630 64.1 1.55
9 ∞ 1.61
非球面係数を以下に示す。
第1面
K=0.11093E+01,A4=-0.31060E-01,A6=-0.30240E+00,A8=0.12068E+01,
A10=-0.20477E+01
第4面
K=0.10718E+00,A4=-0.96415E-01,A6=0.29813E+00,A8=-0.33435E+01,
A10=0.12216E+02,A12=-0.16594E+02,A14=0.80932E+01
第5面
K=0.12791E+00,A4=-0.47181E+00,A6=0.68687E+00,A8=-0.65126E+00,
A10=0.24875E+00,A12=0.74613E+00,A14=-0.50937E+00
第6面
K=-0.38681E+00,A4=-0.74016E+00,A6=0.16989E+00,A8=0.37055E+00,
A10=-0.33587E+00,A12=0.76047E-01
第7面
K=-0.29508E+01,A4=-0.35149E+00,A6=0.23721E+00,A8=-0.10953E+00,
A10=0.27644E-01,A12=-0.30214E-02
実施例10の撮像レンズの単レンズデータを以下に示す。
レンズ 始面 焦点距離(mm)
1 1 3.089
2 4 6.608
3 6 -5.487
実施例10では、第1レンズ1の基板部の物体側にのみレンズ部が樹脂材料で形成されている。
f2/f r3/r4 ν1-ν2
実施例1 9.348 0.978 0.0
実施例2 19.797 0.920 0.0
実施例3 6.434 1.022 0.0
実施例4 9.073 0.997 25.1
実施例5 5.910 1.031 0.0
実施例6 3.688 1.143 0.0
実施例7 3.913 1.106 25.1
実施例8 1.089 2.354 0.0
実施例9 5.401 1.063 0.0
実施例10 2.516 1.466 -
なお、上記の実施例1~9においては、第1レンズL1の基板部の物体側、像面側の両面にレンズ部が形成されたもの、実施例10においては、第1レンズL1の基板部の物体側のみにレンズ部が形成されたものを示したが、第1レンズL1の基板部の像面側のみにレンズ部が形成されたものであってもよいのは勿論である。
L1 第1レンズ
L1a 物体側のレンズ部(第1レンズ)
L1b 基板部(第1レンズ)
L1c 像側のレンズ部(第1レンズ)
L2 第2レンズ
L3 第3レンズ
L3a 物体側のレンズ部(第3レンズ)
L3b 基板部(第3レンズ)
L3c 像側のレンズ部(第3レンズ)
50 撮像装置
51 撮像素子
52a 支持基板
52b フレキシブルプリント基板
53 筐体
55 鏡枠
100 携帯電話機
Claims (10)
- 固体撮像素子の光電変換部に被写体像を結像する撮像レンズであって、
物体側から順に、正の屈折力を有する第1レンズと、
正の屈折力を有する第2レンズと、
負の屈折力を有する第3レンズと、を有し、
前記第1レンズは、平行平板である基板部と、前記基板部の物体側面及び像側面の少なくとも一方に、前記基板部と異なる屈折率の材料で形成されたレンズ部と、を備え、
前記第2レンズは、単レンズであり、
以下の条件式を満足することを特徴とする撮像レンズ。
1<f2/f<20 (1)
ただし、
f2:前記第2レンズの焦点距離
f:撮像レンズ全系の焦点距離 - 前記第2レンズは像側に凸面を向けたメニスカス形状であり、
以下の条件式を満足することを特徴とする請求項1に記載の撮像レンズ。
0.90<r3/r4<2.40 (2)
ただし、
r3:前記第2レンズ物体側面の近軸曲率半径
r4:前記第2レンズ像側面の近軸曲率半径 - 前記第1レンズの物体側面のレンズ部と像側面のレンズ部は異なる材料で形成され、
前記第1レンズの物体側面のレンズ部は物体側に凸面を向けた平凸レンズであり、
前記第1レンズの像側面のレンズ部は像側に凹面を向けた平凹レンズであり、
以下の条件式を満足することを特徴とする請求項1又は請求項2に記載の撮像レンズ。
10<ν1-ν2<70 (3)
ただし、
ν1:前記第1レンズの物体側面のレンズ部のd線のアッベ数
ν2:前記第1レンズの像側面のレンズ部のd線のアッベ数 - 前記第2レンズはエネルギー硬化型樹脂材料からなることを特徴とする請求項1から請求項3までのいずれか一項に記載の撮像レンズ。
- 前記第3レンズは、平行平板である基板部と、前記基板部の物体側面及び像側面上の少なくとも一方に形成されたレンズ部と、を備えていることを特徴とする請求項1から請求項4までのいずれか一項に記載の撮像レンズ。
- 前記第3レンズは、単レンズであることを特徴とする請求項1から請求項4までのいずれか一項に記載の撮像レンズ。
- 前記基板部がガラス材料からなり、前記レンズ部が樹脂材料からなることを特徴とする請求項1から請求項6までのいずれか一項に記載の撮像レンズ。
- 前記レンズ部はエネルギー硬化型樹脂材料からなることを特徴とする請求項1から請求項7までのいずれか一項に記載の撮像レンズ。
- 請求項1から請求項8までのいずれか一項に記載の撮像レンズと、前記撮像レンズにより結像された被写体像を電気信号に変換する固体撮像素子とを有することを特徴とする撮像装置。
- 請求項9に記載の撮像装置を有することを特徴とする携帯端末。
Priority Applications (3)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
US13/125,658 US8111471B2 (en) | 2008-10-24 | 2009-08-28 | Imaging lens, imaging device, and portable terminal |
CN2009801417067A CN102197329B (zh) | 2008-10-24 | 2009-08-28 | 摄像透镜、摄像装置及便携终端 |
JP2010534750A JPWO2010047178A1 (ja) | 2008-10-24 | 2009-08-28 | 撮像レンズ及び撮像装置並びに携帯端末 |
Applications Claiming Priority (2)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
JP2008-274187 | 2008-10-24 | ||
JP2008274187 | 2008-10-24 |
Publications (1)
Publication Number | Publication Date |
---|---|
WO2010047178A1 true WO2010047178A1 (ja) | 2010-04-29 |
Family
ID=42119226
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
PCT/JP2009/065059 WO2010047178A1 (ja) | 2008-10-24 | 2009-08-28 | 撮像レンズ及び撮像装置並びに携帯端末 |
Country Status (4)
Country | Link |
---|---|
US (1) | US8111471B2 (ja) |
JP (1) | JPWO2010047178A1 (ja) |
CN (1) | CN102197329B (ja) |
WO (1) | WO2010047178A1 (ja) |
Cited By (3)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
WO2013145989A1 (ja) * | 2012-03-28 | 2013-10-03 | コニカミノルタ株式会社 | 撮像レンズ、撮像装置及び携帯端末 |
JP2015026000A (ja) * | 2013-07-29 | 2015-02-05 | 株式会社オプトロジック | 撮像レンズ |
JP2016188894A (ja) * | 2015-03-30 | 2016-11-04 | 日立マクセル株式会社 | 撮像レンズ系及び撮像装置 |
Families Citing this family (8)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
CN105159009B (zh) | 2010-05-20 | 2018-11-06 | Lg伊诺特有限公司 | 相机模块 |
US8547648B2 (en) * | 2010-09-24 | 2013-10-01 | Himax Semiconductor, Inc. | Micro-lens module |
CN103119516B (zh) * | 2011-09-20 | 2016-09-07 | 松下知识产权经营株式会社 | 光场摄像装置和图像处理装置 |
US9088705B1 (en) | 2013-08-30 | 2015-07-21 | Amazon Technologies, Inc. | Camera module package with stiffener-mounted image sensor die |
JP6254680B2 (ja) * | 2014-04-04 | 2018-01-10 | シャープ株式会社 | レンズ素子および撮像装置 |
US9377603B1 (en) * | 2015-01-26 | 2016-06-28 | Omnivision Technologies, Inc. | Low-profile hybrid lens systems and methods for manufacturing the same |
US10925160B1 (en) * | 2016-06-28 | 2021-02-16 | Amazon Technologies, Inc. | Electronic device with a display assembly and silicon circuit board substrate |
US9835821B1 (en) * | 2016-07-26 | 2017-12-05 | Omnivision Technologies, Inc. | Five-surface wide field-of-view compound lens and associated camera module |
Citations (3)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JP4022246B1 (ja) * | 2007-05-09 | 2007-12-12 | マイルストーン株式会社 | 撮像レンズ |
JP2008216807A (ja) * | 2007-03-06 | 2008-09-18 | Sharp Corp | 撮像レンズ、撮像ユニットおよびそれを備えた携帯型情報端末 |
JP2008217039A (ja) * | 2008-05-26 | 2008-09-18 | Sharp Corp | 撮像レンズ、撮像ユニットおよびそれを備えた携帯型情報端末 |
Family Cites Families (3)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JP4760109B2 (ja) * | 2005-04-22 | 2011-08-31 | コニカミノルタオプト株式会社 | 撮像レンズ、撮像装置及び携帯端末 |
JP4293291B2 (ja) * | 2007-02-19 | 2009-07-08 | コニカミノルタオプト株式会社 | 撮像レンズ及び撮像装置並びに携帯端末 |
JP3976782B1 (ja) | 2007-05-17 | 2007-09-19 | マイルストーン株式会社 | 撮像レンズ |
-
2009
- 2009-08-28 US US13/125,658 patent/US8111471B2/en not_active Expired - Fee Related
- 2009-08-28 CN CN2009801417067A patent/CN102197329B/zh not_active Expired - Fee Related
- 2009-08-28 JP JP2010534750A patent/JPWO2010047178A1/ja active Pending
- 2009-08-28 WO PCT/JP2009/065059 patent/WO2010047178A1/ja active Application Filing
Patent Citations (3)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JP2008216807A (ja) * | 2007-03-06 | 2008-09-18 | Sharp Corp | 撮像レンズ、撮像ユニットおよびそれを備えた携帯型情報端末 |
JP4022246B1 (ja) * | 2007-05-09 | 2007-12-12 | マイルストーン株式会社 | 撮像レンズ |
JP2008217039A (ja) * | 2008-05-26 | 2008-09-18 | Sharp Corp | 撮像レンズ、撮像ユニットおよびそれを備えた携帯型情報端末 |
Cited By (4)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
WO2013145989A1 (ja) * | 2012-03-28 | 2013-10-03 | コニカミノルタ株式会社 | 撮像レンズ、撮像装置及び携帯端末 |
CN104204892A (zh) * | 2012-03-28 | 2014-12-10 | 柯尼卡美能达株式会社 | 摄像透镜、摄像装置以及便携终端 |
JP2015026000A (ja) * | 2013-07-29 | 2015-02-05 | 株式会社オプトロジック | 撮像レンズ |
JP2016188894A (ja) * | 2015-03-30 | 2016-11-04 | 日立マクセル株式会社 | 撮像レンズ系及び撮像装置 |
Also Published As
Publication number | Publication date |
---|---|
US20110194014A1 (en) | 2011-08-11 |
US8111471B2 (en) | 2012-02-07 |
CN102197329A (zh) | 2011-09-21 |
CN102197329B (zh) | 2013-07-10 |
JPWO2010047178A1 (ja) | 2012-03-22 |
Similar Documents
Publication | Publication Date | Title |
---|---|---|
JP5348563B2 (ja) | 撮像レンズ、撮像装置及び携帯端末 | |
WO2010047178A1 (ja) | 撮像レンズ及び撮像装置並びに携帯端末 | |
JP5321954B2 (ja) | 撮像レンズ、撮像装置及び携帯端末 | |
US9310582B2 (en) | Image pick-up lens, image pick-up device, portable terminal and digital instrument | |
JP5740799B2 (ja) | 撮像レンズ、撮像装置及び携帯端末 | |
JP5585586B2 (ja) | 撮像レンズ及び撮像装置 | |
JP5434093B2 (ja) | 撮像レンズ、撮像装置及び携帯端末 | |
WO2009101928A1 (ja) | レンズユニット、撮像レンズ、撮像装置および携帯端末 | |
US8305698B2 (en) | Imaging lens, imaging device, and portable terminal | |
JP5648689B2 (ja) | 撮像レンズ及び撮像装置 | |
JP2012108230A (ja) | 撮像レンズ及び撮像装置 | |
US8315000B2 (en) | Image pickup lens, image pickup apparatus and mobile terminal | |
JP2010266815A (ja) | 撮像レンズ,撮像装置及び携帯端末 | |
JP5391822B2 (ja) | 撮像レンズ,撮像装置及び携帯端末 | |
JPWO2013132915A1 (ja) | 撮像レンズ及び撮像装置 | |
JP5678956B2 (ja) | 撮像レンズ、撮像装置及び携帯端末 | |
WO2010146899A1 (ja) | 撮像レンズ、撮像装置及び携帯端末 | |
WO2010140415A1 (ja) | 撮像レンズ、撮像装置及び携帯端末 | |
JP2009204877A (ja) | 撮像レンズ及び撮像装置 | |
JP5585471B2 (ja) | 撮像レンズ及び画像処理装置 |
Legal Events
Date | Code | Title | Description |
---|---|---|---|
WWE | Wipo information: entry into national phase |
Ref document number: 200980141706.7 Country of ref document: CN |
|
121 | Ep: the epo has been informed by wipo that ep was designated in this application |
Ref document number: 09821878 Country of ref document: EP Kind code of ref document: A1 |
|
WWE | Wipo information: entry into national phase |
Ref document number: 2010534750 Country of ref document: JP |
|
WWE | Wipo information: entry into national phase |
Ref document number: 13125658 Country of ref document: US |
|
NENP | Non-entry into the national phase |
Ref country code: DE |
|
122 | Ep: pct application non-entry in european phase |
Ref document number: 09821878 Country of ref document: EP Kind code of ref document: A1 |