WO2011093502A1 - レンズユニットの製造方法、撮像装置、金型の製造方法、成形金型及びガラスレンズアレイの成形方法 - Google Patents
レンズユニットの製造方法、撮像装置、金型の製造方法、成形金型及びガラスレンズアレイの成形方法 Download PDFInfo
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- WO2011093502A1 WO2011093502A1 PCT/JP2011/051993 JP2011051993W WO2011093502A1 WO 2011093502 A1 WO2011093502 A1 WO 2011093502A1 JP 2011051993 W JP2011051993 W JP 2011051993W WO 2011093502 A1 WO2011093502 A1 WO 2011093502A1
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- WIPO (PCT)
- Prior art keywords
- lens
- glass
- mold
- lens array
- lower mold
- Prior art date
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- C—CHEMISTRY; METALLURGY
- C03—GLASS; MINERAL OR SLAG WOOL
- C03B—MANUFACTURE, SHAPING, OR SUPPLEMENTARY PROCESSES
- C03B11/00—Pressing molten glass or performed glass reheated to equivalent low viscosity without blowing
- C03B11/06—Construction of plunger or mould
- C03B11/08—Construction of plunger or mould for making solid articles, e.g. lenses
- C03B11/082—Construction of plunger or mould for making solid articles, e.g. lenses having profiled, patterned or microstructured surfaces
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- C—CHEMISTRY; METALLURGY
- C03—GLASS; MINERAL OR SLAG WOOL
- C03B—MANUFACTURE, SHAPING, OR SUPPLEMENTARY PROCESSES
- C03B23/00—Re-forming shaped glass
- C03B23/20—Uniting glass pieces by fusing without substantial reshaping
- C03B23/22—Uniting glass lenses, e.g. forming bifocal lenses
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- G—PHYSICS
- G02—OPTICS
- G02B—OPTICAL ELEMENTS, SYSTEMS OR APPARATUS
- G02B3/00—Simple or compound lenses
- G02B3/0006—Arrays
-
- 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
- G02B7/025—Mountings, adjusting means, or light-tight connections, for optical elements for lenses using glue
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- C—CHEMISTRY; METALLURGY
- C03—GLASS; MINERAL OR SLAG WOOL
- C03B—MANUFACTURE, SHAPING, OR SUPPLEMENTARY PROCESSES
- C03B2215/00—Press-moulding glass
- C03B2215/40—Product characteristics
- C03B2215/41—Profiled surfaces
- C03B2215/414—Arrays of products, e.g. lenses
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- C—CHEMISTRY; METALLURGY
- C03—GLASS; MINERAL OR SLAG WOOL
- C03B—MANUFACTURE, SHAPING, OR SUPPLEMENTARY PROCESSES
- C03B2215/00—Press-moulding glass
- C03B2215/76—Pressing whereby some glass overflows unrestrained beyond the press mould in a direction perpendicular to the press axis
-
- C—CHEMISTRY; METALLURGY
- C03—GLASS; MINERAL OR SLAG WOOL
- C03B—MANUFACTURE, SHAPING, OR SUPPLEMENTARY PROCESSES
- C03B2215/00—Press-moulding glass
- C03B2215/80—Simultaneous pressing of multiple products; Multiple parallel moulds
Definitions
- the present invention relates to a lens unit manufacturing method, an imaging device, a mold manufacturing method, a molding die, and a glass lens array molding method.
- Compact and very thin imaging devices are used in portable terminals such as mobile phones and PDAs which are 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.
- An optical system composed of a resin lens is known as an imaging lens used in an imaging device built in such a portable terminal.
- a method has been proposed in which a large number of resin lens elements are simultaneously molded on a several inch wafer by a replica method, and these wafers are combined with a sensor wafer and then separated to mass-produce camera modules (Patent Document 1). reference).
- a resin has a large refractive index change with respect to a temperature change
- the conventional glass lens manufacturing method since a plurality of lenses are individually molded from glass and then combined, there is a problem that it takes time and is not suitable for mass production.
- the glass lens is molded into a wafer-like array like the resin lens described above.
- a new technical problem that cannot be envisaged when the resin lens is made into a wafer arises.
- One of them is a problem of deviation of the optical axes of the lenses on both sides in the entire lens array.
- a lens part is formed with a resin on one surface through a glass substrate, and then a lens surface is formed with a resin on the other surface to form a lens array of a double-sided lens.
- the optical axis shift of both surfaces of each lens can be configured such that the optical axis of the lens portion of the other surface is aligned with the optical axis of one lens portion.
- the present invention has been made in view of the problems of the related art, and a method of manufacturing a lens unit for mass production of a lens unit suitable for an imaging apparatus using a glass material with high accuracy and easily, It is an object of the present invention to provide an imaging apparatus, a mold manufacturing method, a molding mold, and a glass lens array molding method.
- a method for manufacturing a lens unit according to a first aspect of the present invention A plurality of first lens portions formed in a predetermined arrangement and a first positioning reference by arranging a glass material between the first mold dies and molding the glass by clamping the first mold dies. Forming a first glass lens array having a surface; A plurality of second lens portions formed in a predetermined arrangement and a second positioning reference by arranging a glass material between the second mold dies and molding the glass by clamping the second mold dies. Forming a second glass lens array having a surface; Using the first positioning reference surface and the second positioning reference surface, the third glass is laminated and bonded so that the optical axes of the lens portions of the first glass lens array and the second glass lens array coincide with each other. Forming a lens array; Cutting the third glass lens array into lens units each including at least one of the first lens unit and the second lens unit; It is characterized by having.
- the plurality of first lens portions and the plurality of second lens portions reflect the highly accurate state obtained by positioning the lens mold, and the molded first positioning reference surface and the second Positioning with a positioning reference surface can be performed with high accuracy at one time, and further, high-precision lens units can be mass-produced by joining and cutting.
- the “predetermined arrangement” includes n columns and m rows, or a case where they are arranged in a circle.
- the first positioning reference surface is formed in parallel with the optical axis of the first lens unit, and includes first and second reference surface portions in directions intersecting with each other, and the second positioning reference surface is It is preferable that the second lens unit includes third and fourth reference surface portions that are formed in parallel to the optical axis of the second lens unit and intersect each other. Accordingly, the optical axes of the plurality of first lens portions and the plurality of second lens portions can be matched at once using the first to fourth reference surface portions.
- the first positioning reference surface has a first inclination reference surface portion orthogonal to the optical axis of the first lens portion
- the second positioning reference surface is a second inclination orthogonal to the optical axis of the second lens portion. It is preferable to have a reference surface portion. Thereby, the inclination of the optical axis of a some 1st lens part and a some 2nd lens part can be match
- the step of joining the first glass lens array and the second glass lens array includes placing the first glass lens array vertically downward and applying a biasing force to the first reference surface. It is preferable to include a step of bringing the second glass lens array held upward in the vertical direction close to the second reference surface with a biasing force applied. As a result, the plurality of first lens portions and the plurality of second lens portions can be positioned with high accuracy.
- the first glass lens array has a first mark indicating the first reference surface
- the second glass lens array has a second mark indicating the second reference surface.
- the step of molding at least one of the first glass lens array and the second glass lens array comprises at least one set of the first mold mold and the second mold mold from a molten glass material from above in the vertical direction. It is preferable to include a step of performing molding after dropping into the lower mold of the mold. As a result, lens portions having different flange thicknesses and axial thicknesses can be easily formed. However, you may shape
- An imaging device includes a lens unit manufactured by the method for manufacturing a lens unit, and a lens frame surrounding the lens unit, and extends the lens unit or the lens unit of the lens unit.
- the surface to be positioned is positioned with respect to the lens frame.
- the mold manufacturing method includes: A plurality of cylindrical through holes are formed, a first upper mold sleeve having a first side surface parallel to the through holes, and a transfer for inserting a lens part at one end, each inserted into the through hole.
- a first upper mold core member having a plurality of first upper mold core members having a surface;
- a plurality of cylindrical through holes are formed, a first lower mold sleeve having a second side surface parallel to the through holes, and a transfer for inserting a lens part at one end, each inserted into the through hole.
- a first lower mold core member having a plurality of first lower mold core members having a surface;
- a plurality of cylindrical through-holes are formed, a second upper mold sleeve having a third side surface parallel to the through-holes, and a transfer for inserting a lens part at one end, each inserted into the through-hole.
- a second upper mold core member having a plurality of second upper mold core members having a surface;
- Each of the cylindrical through holes is formed, a second lower mold sleeve having a fourth side surface parallel to the through holes, and a transfer for forming a lens portion at one end of each through the through hole.
- a second lower mold core member having a plurality of second lower mold core members having a surface;
- the glass material is disposed between the first upper mold and the first lower mold, and the first upper and lower molds are clamped to form a plurality of glass lens portions and flange portions.
- the first glass lens array formed integrally is molded, a glass material is disposed between the second upper mold and the second lower mold, and the second upper and lower molds are clamped to make glass.
- a method of manufacturing the first upper and lower molds and the second upper and lower molds The first upper mold, the first lower mold, the second upper mold, and the second lower mold are stacked, and the first upper mold, the first lower mold, and the second upper mold are stacked.
- the through holes of the mold and the second lower mold are processed simultaneously by machining.
- the first through fourth side surface portions are formed by machining together with the simultaneous processing of the through holes, and the first through fourth side surface portions become the same surface after the simultaneous processing of the through holes.
- a molding die is a molding die for molding a glass lens array in which a plurality of lens portions and a flange portion are integrally formed, A plurality of upper mold core members each having a plurality of cylindrical through holes and a transfer surface for forming a lens portion at one end inserted into each of the plurality of through holes. And an upper mold disposed vertically above, The upper mold and a lower mold disposed in a vertically downward direction with the transfer surface facing each other, A glass material is disposed between the upper mold and the lower mold, and a plurality of glass lens portions and a flange portion are integrally formed by clamping the upper mold and the lower mold. A glass lens array is molded.
- a glass lens array in which a plurality of lens parts having lens surfaces on both sides are integrally formed can reduce the optical axis deviation of both sides and the axis deviation of adjacent lens parts, and a highly accurate glass lens array can be molded. Therefore, it becomes possible to mass-produce highly accurate lens units.
- the upper mold has a through-hole diameter that is the same from the top to the bottom, and holding means for holding the upper mold core member vertically against the upper mold sleeve. It is preferable to be provided, and this can suppress breakage of the upper mold core member and can prevent inadvertent dropping.
- the holding means is a magnet, and at least a part of the upper mold core member is made of a magnetic material.
- means such as evacuation may be used as the holding means.
- the lower mold includes a lower mold sleeve having a cylindrical through hole, and a plurality of lower mold core members inserted into the through hole and having a transfer surface for forming a lens portion at one end.
- a protrusion amount can be adjusted using a spacer with respect to at least one of the upper mold sleeve and the lower mold sleeve. Is preferred. This facilitates adjustment of the protruding amount of the core during molding.
- the glass lens array molding method is such that a glass material is arranged between an upper mold and a lower mold arranged in the vertical direction, and the upper mold and the lower mold are used.
- a glass lens array molding method for molding a glass lens array in which a flange portion and a plurality of lens portions are integrally formed by clamping the mold, A step of preparing the lower mold having a plurality of transfer surfaces corresponding to lens surfaces of the plurality of lens portions disposed below in the vertical direction; and at least two of the lenses from above with respect to the lower mold A step of dropping a quantity of molten glass necessary for forming a part at once, and placing the upper mold with respect to the lower mold on which the molten glass has been dropped, and arranging the upper mold and the lower mold And a mold clamping step.
- the molten glass dropped in the dropping step is dropped at a position equidistant from a plurality of transfer surfaces forming the lens portion.
- the molten glass is uniformly filled in each lens portion at the time of molding, and a large number of high-quality lenses with little variation in performance can be obtained at a time.
- a method of forming a lens array can be provided.
- FIG. 19 is a cross-sectional view of the configuration of FIG. 18 taken along line XIX-XIX and viewed in the direction of the arrow. It is a figure which shows the state equipped with the imaging device 50 in the mobile telephone 100 as a portable terminal which is a digital device.
- 3 is a control block diagram of the mobile phone 100.
- FIG. 1 is a partial cross-sectional view of a molding die used in the present embodiment.
- the vertical direction is the vertical direction.
- the hollow cylindrical core support member 1 is a hollow cylindrical member having an equal outer diameter over the entire length, has a through hole 1a in the axial direction, and is made of STAVAX (a magnetic material). Pre-hardened steel). The coefficient of thermal expansion of STAVAX is 1.2 ⁇ 10 ⁇ 5 / K.
- the mold sleeve 2 has a cylindrical opening 2a.
- the core support member 1 is fitted in the opening 2a.
- the ceramic core 3 includes a head portion 3b having a molding transfer surface 3a formed on an end surface thereof, and a shaft portion 3c connected to the head portion 3b.
- the core 3 is attached to the end of the core support member 1 by inserting the cylindrical shaft portion 3c into the through hole 1a and fixing it with a heat-resistant adhesive.
- the core 3 and the core support member 1 constitute a core member.
- the core 3 is made of SiC having a thermal expansion coefficient of 4.7 ⁇ 10 ⁇ 6 / K.
- the core support member 1 is interposed between the opening of the mold sleeve and the core, and the thermal expansion coefficient of the core support member is larger than the thermal expansion coefficient of the mold sleeve.
- the material is selected.
- the material to be used may be limited due to molding conditions.
- SiC is often the most suitable material for the core, but the coefficient of thermal expansion of SiC is relatively small, so when trying to fill the fitting gap using thermal expansion, the material of the mold sleeve is even smaller.
- the one with thermal expansion coefficient must be used.
- conditions other than the thermal expansion coefficient must be taken into account, which makes it difficult to select the material.
- the pin structure by dividing the pin structure into a part having a function necessary for optical surface transfer and a part having a function for filling a fitting gap due to thermal expansion, the problem of axial misalignment can be avoided while using SiC. It becomes. Thereby, while utilizing a mechanism that aligns using thermal expansion, the degree of freedom in selecting a material to be used for the optical surface is widened, and a mold that is more advantageous for molding can be manufactured.
- the thermal expansion coefficient of the core support member is more preferably twice or more the thermal expansion coefficient of the mold sleeve to which the core support member is attached. With such a configuration, it becomes easy to achieve both the securing of the gap necessary for fitting and the disappearance of the gap by thermal expansion.
- the core is preferably bonded to the core support member. However, it may be mechanically fixed with a screw or the like.
- the outer diameter of the fitting portion of the core support member is smaller than the outermost diameter of the core at normal temperature, and the outer diameter of the fitting portion of the core support member is larger than the outermost diameter of the core at the time of molding. It is preferable that the outer diameter is as follows. With this configuration, the difference between the outer diameter of the core after thermal expansion and the outer diameter of the core support member can be reduced, and the gap between the mold sleeve opening and the core can be further reduced.
- the material of the mold sleeve is WC
- the material of the core support member is STAVAX
- the material of the core is SiC.
- the bottom plate is divided for each core, and a screw groove for screwing the corresponding mold sleeve and the disc-like spacer is provided in each divided bottom plate, and the corresponding mold sleeve And the disk-shaped spacer may be individually adjusted for each core.
- both a method using a solid having a lens-like shape such as a preform and a method using a glass material melted in advance are used as a mold.
- the mold opening method is generally used. In the latter case, in particular, such a mold opening configuration is essential because the molten glass material is dropped on one molding surface.
- the core support member 1 is shaped so that the large diameter portion and the small diameter portion are joined in series as shown by the dotted line.
- the core support member 1 can be prevented from falling vertically downward from the opening 2a by bringing the large diameter portion into contact with the stepped portion formed by reducing the diameter of the lower portion of the opening 2a so as to correspond to the above.
- the protruding amount of the core 3 can be restricted.
- the outer periphery of the core support member 1 and the inner periphery of the opening 2a are each formed in a cylindrical shape having the same diameter from the upper side to the lower side, and further covering the upper end of the opening 2a.
- mold sleeve 2 is employ
- the cylindrical shape having the same diameter can prevent breakage during insertion, and the core support member 1 is made of a magnetic material. Therefore, the bottom plate 4 as the holding means attaches the core support member 1 in the opening 2a. It will attract
- the protruding amount of the core 3 can be set to a desired value by disposing a disc-like spacer 5 having an appropriate thickness between the upper end of the core support member 1 and the bottom plate 4.
- a disc-like spacer 5 having an appropriate thickness between the upper end of the core support member 1 and the bottom plate 4.
- the entire bottom plate 4 does not have to be formed of a magnet, and a disc-shaped magnet MG as shown by a dotted line may be attached to the nonmagnetic bottom plate 4 so as to face the opening 2a.
- FIG. 2 is a perspective view of a molding die used in the present embodiment.
- FIG. 3 is a bottom view of the upper mold
- FIG. 4 is a top view of the lower mold.
- a plurality of upper molds (first upper mold sleeves) 12 fixedly supported on the upper holder 19 by bolts (not shown) inserted through the bolt holes BH are arranged in two rows and two rows here.
- These side surfaces form a plane parallel to the central axis of the cylindrical through hole.
- a core support member 11 having a configuration similar to that shown in FIG. 1 can be fitted into the opening 12a.
- the core 13 and the core support member 11 constitute a first upper mold core member.
- a plurality of lower molds (first lower mold sleeves) 22 fixedly supported on the lower holder 29 by bolts (not shown) inserted into the bolt holes BH (here, arranged in two rows and two rows).
- a slit-shaped mark 22f formed on the upper surface 22b adjacent to one groove 22e, and reference side surfaces (second side surface portions) 22c and 22d that are orthogonal to the upper surface 22b and orthogonal to each other.
- a tapered portion 22g is formed around the upper surface 22b.
- the core support member 21 can be fitted into the opening 22a.
- the core 23 and the core support member 21 constitute a first lower mold core member.
- channel 22e makes the surface 22x of x direction and the surface of y direction the reference surface 22y (refer FIG. 4).
- an upper mold 12 'and a lower mold 22' having the same configuration are used.
- the upper mold (second upper mold) 12 ′ and the lower mold (second lower mold) 22 ′ are attached to the same parts as the upper mold 12 and the lower mold 22, and are denoted by the same reference numerals. (') Is given and explanation is omitted.
- the first assembled mold is a combination of the upper mold 12 and the lower mold 22
- the second assembled mold is a combination of the upper mold 12 ′ and the lower mold 22 ′
- the upper mold 12 ′ is It is a second upper mold sleeve, reference side surfaces 12c 'and 12d' of the upper mold 12 'are third side surface parts, and the core 13' and the core support member 11 'are second upper mold core members.
- the lower mold 22 ′ is the second lower mold sleeve
- the reference side surfaces 22c ′ and 22d ′ of the lower mold 22 ′ are the fourth side surfaces
- the core 23 ′ and the core support member 21 ′ are This is the second lower mold core member.
- the lower mold 22 and the upper mold 12, and the upper mold 12 ′ and the lower mold 22 ′ are used as a reference by using a guide or the like (not shown).
- the side surfaces 22c, 12c, 12c ′, 22c ′ are overlapped so as to be aligned on the same plane, and the reference side surfaces 22d, 12d, 12d ′, 22d ′ (on the back side in FIG.
- the first mold reference surface is two specific surfaces that are orthogonal to each other and are arranged on the same plane as described above, among the four surfaces forming the side surfaces of the upper mold 12 and the lower mold 22. , Reference side surfaces 12c, 22c, 12d, and 22d.
- the second mold reference surface is a reference side surface 12c ′, 22c ′, 12d that is a specific two side surface of each of the upper mold 12 ′ and the lower mold 22 ′. ', 22d'.
- the through-holes may be sequentially formed at a predetermined distance from the reference position by pressing one workpiece against a member indicating the reference position.
- the through-holes may be machined to form the reference side surface after the through holes are simultaneously machined to form the respective openings.
- the reference side surfaces do not necessarily have to be simultaneously processed so as to be on the same plane, and each reference side surface may be formed in advance with a predetermined shift amount.
- the through hole formation processing and the reference side surface processing may be performed by continuous processing.
- the continuous machining means that the workpiece is continuously processed without being lowered from the work table after the workpiece is set on the work table.
- the first glass lens array IM1 which is the first glass lens array
- the second glass lens array is formed by the upper mold 12 ′ and the lower mold 22 ′.
- the second glass lens array IM2 is molded, only molding by the upper mold 12 and the lower mold 22 will be described here.
- the glass lens array is molded.
- the method of (2) that can take a large difference in the core thickness between the lens portion and the non-lens portion (a portion forming the end portion of the intermediate body between the plurality of lens portions) is preferable.
- a method of batch dropping large glass droplets that is, molten glass droplets with a volume sufficiently filled in at least two molding surfaces is preferable.
- the dropping position is more preferably a method of dropping at a position equidistant from a plurality of molding surfaces scheduled to be filled.
- the lower mold 22 in which the core support member 21 with the core 23 attached to the upper end is assembled in each of the four openings 22a is stored in a storage unit (not shown) in which glass is heated and melted.
- the droplets of the glass GL melted from the platinum nozzle NZ are collectively dropped onto the upper surface 22b toward the positions equidistant from the plurality of molding surfaces.
- the viscosity of the glass GL is low, the dropped glass GL spreads on the upper surface 22b and easily enters the transfer surface 23a of the core 23 to transfer its shape, and the grooves 22e and the marks 22f The shape is also accurately transferred.
- the amount of droplets of a relatively large glass GL passing through the four small holes is adjusted and then decomposed into four small droplets. At the same time, it is supplied onto the upper surface 22b.
- dripping liquid molten glass since it becomes easy to produce air accumulation between each shaping
- the lower mold 22 is brought close to a position facing the lower side of the upper mold 12 in which the core support member 11 having the core 13 attached to the lower end is assembled in each of the four openings 12a. Align with the upper mold 12. At this time, by using a guide or the like (not shown), the reference side surfaces 12c and 12d of the upper mold 12 (not shown in FIG. 7) and the reference side faces 22c and 22d of the lower mold 22 used during the above-described processing are used. By being flush with each other, misalignment between the core 13 and the core 23 can be suppressed, and high-precision molding can be performed in which the optical axes of both lens surfaces are aligned. Further, as shown in FIG.
- the upper mold 12 and the lower mold 22 are brought close to each other for molding. Thereby, the shape of the transfer surface 13a (here, convex shape) of the core 13 is transferred. Since a shallow circular step is formed around the transfer surface 13a, it is also transferred at the same time. At this time, the lower surface 12b of the upper mold 12 and the upper surface 22b of the lower mold 22 are held so as to be separated from each other by a predetermined distance to cool the glass GL. The glass GL solidifies in a state where it goes around and covers the tapered portion 22g.
- FIG. 9 is a front perspective view of the first glass lens array IM1
- FIG. 10 is a rear perspective view.
- the first glass lens array IM1 has a disk shape as a whole and is formed on the surface IM1a, which is a highly accurate plane transferred and molded by the lower surface 12b of the upper mold 12, and the surface IM1a. It has four concave optical surfaces IM1b transferred and formed by the transfer surface 13a, and a shallow circular groove IM1c transferred by a circular step portion around the concave optical surface IM1b.
- the circular groove IM1c is for accommodating a light shielding member SH described later.
- the first glass lens array IM1 includes a back surface IM1d which is a high-precision plane transferred and molded by the upper surface 22b of the lower mold 22, and four convex optical surfaces IM1e transferred and formed on the back surface IM1d by the transfer surface 23a. And convex portions IM1f transferred and formed by the grooves 22e, and convex marks (first marks) IM1g transferred and formed by the marks 22f.
- the concave optical surface IM1b and the convex optical surface IM1e constitute the first lens portion L1.
- the convex portion IM1f is parallel to the optical axis of the first lens portion L1, and includes a first reference surface portion IM1x facing the x direction and a second reference surface portion IM1y facing the y direction. .
- the back surface IM1d forms a first tilt reference surface, and the first reference surface portion IM1x and the second reference surface portion IM1y form a first shift reference surface.
- FIG. 11 is a perspective view of the front side of the second glass lens array IM2 transferred and formed by the upper mold 12 'and the lower mold 22'
- FIG. 12 is a perspective view of the back side.
- the second glass lens array IM2 formed in the same manner as the first glass lens array has a disk shape as a whole, and is transferred and molded by the lower surface 12b ′ of the upper mold 12 ′. It has a surface IM2a that is a highly accurate plane, and four concave optical surfaces IM2b that are transferred and formed on the surface IM2a by a transfer surface 13a ′.
- a shallow groove around the concave optical surface IM2b used for accommodating a light shielding member SH to be described later is omitted, but this may be provided.
- the second glass lens array IM2 has a back surface IM2d which is a high-precision plane transferred and molded by the upper surface 22b ′ of the lower mold 22 ′, and four convex shapes transferred and formed on the back surface IM2d by the transfer surface 23a ′. It has an optical surface IM2e, a convex portion IM2f transferred and formed by the groove 22e ′, and a convex mark (second mark) IM2g transferred and formed by the mark 22f ′.
- the concave optical surface IM2b and the convex optical surface IM2e constitute the second lens portion L2.
- the convex part IM2f is parallel to the optical axis of the second lens part L2, and has a third reference surface part IM2x facing the x direction and a fourth reference surface part IM2y facing the y direction.
- the back surface IM2d forms the second tilt reference surface
- the third reference surface portion IM2x and the fourth reference surface portion IM2y form the second shift reference surface.
- the area of the concave optical surface or the convex optical surface is reduced, and flat portions around these optical surfaces ( In the case where the area of the flat portion (which constitutes a flange described later) is increased, molding is facilitated by increasing the thickness of the flat portion. For example, when the total projected area of the optical surface when viewed from the optical axis direction is smaller than the total area of the flat portion around the optical surface, the molding becomes better if the thickness of the flat portion is larger than the thickness of the optical surface. .
- FIG. 13 is a diagram illustrating a part of the jig JZ that holds the back surface of the first glass lens array IM1 or the second glass lens array IM2.
- the end face of the circular diameter of the jig JZ is cut into a cross shape. That is, four land portions JZa having a uniform height are formed on the end face of the jig JZ, the upper surface JZb is a flat surface, and the upper surface JZb is a negative pressure source (not shown).
- a communicating suction hole JZc is formed.
- the land portion JZa has a reference holding surface JZx facing in the x direction and a reference holding surface JZy facing in the y direction at the cut portion. Furthermore, the jig JZ includes a spring SPx (simplified illustration) that urges the glass lens array to be held in the x direction and a spring SPy (simplified illustration) that urges the glass lens array in the y direction.
- the second glass lens array IM2 is held against the vertical.
- the top surface JZb of the land portion JZa is abutted against the back surface IM2d of the second glass lens array IM2 while reversing the top of the jig JZ and sucking air from the suction hole JZc.
- the upper surface JZb of the land portion JZa of the jig JZ is in close contact with the rear surface IM2d, so that the inclination of the second glass lens array IM2 with respect to the jig JZ can be set with high accuracy.
- the reference holding surface JZx of the land portion JZa abuts on the third reference surface portion IM2x by being biased by the spring SPx, and the reference holding surface JZy is biased to the fourth reference surface portion by being biased by the spring SPy. Abuts on IM2y.
- the mark IM2g serves as an index indicating which of the positions of the third reference surface portion IM2x and the fourth reference surface portion IM2y.
- the second glass lens array IM2 can be accurately positioned with respect to the jig JZ in the xy direction. Since the third reference surface portion IM2x and the fourth reference surface portion IM2y are respectively formed on both sides of the lens portion, high-precision positioning can be performed by effectively using a long span.
- the back surface IM1d of the first glass lens array IM1 can be accurately held in the tilt direction and the xy direction by another jig JZ. That is, the upper surface JZb of the land portion JZa of the jig JZ is in close contact with the rear surface IM1d, so that the inclination of the first glass lens array IM1 with respect to the jig JZ can be set with high accuracy. Further, the reference holding surface JZx of the land portion JZa abuts on the first reference surface portion IM1x by being biased by the spring SPx, and the reference holding surface JZy is biased to the second reference surface portion by being biased by the spring SPy. Abuts on IM1y.
- the mark (first mark) IM1g serves as an index indicating the position of the first reference surface portion IM1x or the second reference surface portion IM1y.
- the first glass lens array IM1 and the second glass lens array IM2 can be positioned with high accuracy.
- the first lens portion L1 and the second lens are aligned.
- the optical axes of the portions L2 are matched with each other with high accuracy.
- a mold having a molding surface with a molding surface that forms each lens part of the upper mold and the lower mold is accurately molded with the lens part and has a high relative positional accuracy relative to the lens part.
- four donut plate-shaped light-shielding members SH are disposed therebetween, and an adhesive is applied to at least one surface IM1a, IM2a of the first glass lens array IM1 and the second glass lens array IM2.
- the jig JZ is relatively approached to bring the surfaces IM ⁇ b> 1 a and IM ⁇ b> 2 a into close contact, and the adhesive is solidified.
- the light shielding member SH is fitted into the circular groove IM1c, and the third glass lens array IM3 is formed by bonding the first glass lens array IM1 and the second glass lens array IM2. .
- the third glass lens array IM3 can be cut by DB to obtain a lens unit OU as shown in FIG.
- the lens unit OU includes a first lens portion L1, a second lens portion L2, and a rectangular plate-like flange F1 around the first lens portion L1 (consisting of a part of the surfaces IM1a and IM1d of the first glass lens array IM1).
- the imaging device 50 includes a CMOS image sensor 51 as a solid-state imaging device having a photoelectric conversion unit 51a, a lens unit OU that causes the photoelectric conversion unit 51a of the image sensor 51 to capture a subject image, A substrate 52 having an external connection terminal (not shown) for holding the image sensor 51 and transmitting / receiving the electric signal is provided, and these are integrally formed.
- CMOS image sensor 51 as a solid-state imaging device having a photoelectric conversion unit 51a
- a lens unit OU that causes the photoelectric conversion unit 51a of the image sensor 51 to capture a subject image
- a substrate 52 having an external connection terminal (not shown) for holding the image sensor 51 and transmitting / receiving the electric signal is provided, and these are integrally formed.
- a photoelectric conversion unit 51a as a light receiving unit in which pixels (photoelectric conversion elements) are two-dimensionally arranged is formed in the center of a plane on the light receiving side, and signal processing (not shown) is performed.
- a signal processing circuit includes a drive 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 number of pads (not shown) are arranged near the outer edge of the plane on the light receiving side of the image sensor 51, and are connected to the substrate 52 via wires (not shown).
- 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 substrate 52 via a wire (not shown).
- Y is a luminance signal
- the solid-state imaging device is not limited to the CMOS image sensor, and other devices such as a CCD may be used.
- the substrate 52 that supports the image sensor 51 is communicably connected to the image sensor 51 through a wiring (not shown).
- the substrate 52 is connected to an external circuit (for example, a control circuit included in a host device of a portable terminal mounted with an imaging device) via an external connection terminal (not shown), and a voltage for driving the image sensor 51 from the external circuit And a clock signal can be received, and a digital YUV signal can be output to an external circuit.
- an external circuit for example, a control circuit included in a host device of a portable terminal mounted with an imaging device
- an external connection terminal not shown
- a clock signal can be received, and a digital YUV signal can be output to an external circuit.
- the upper part of the image sensor 51 is sealed with a cover glass (not shown), and an IR cut filter CG is disposed between the upper part of the image sensor 51 and the second lens part L2.
- the hollow rectangular tube-shaped lens frame 40 is open at the bottom, but the top is covered with a flange portion 40a.
- An opening 40b is formed in the center of the flange portion 40a.
- a lens unit OU is disposed in the lens frame 40.
- the lens unit OU includes, in order from the object side (upper side in FIG. 19), an aperture stop in which the opening edge of the lens frame functions, a first lens unit L1, a light blocking member SH that blocks unnecessary light, and a second lens unit L2.
- the lens is displaced by the tapered inner peripheral surface 40c of the opening 40b with respect to the optical surface of the first lens portion L1 or a curved surface (excluding the flange surface) obtained by extending the optical surface.
- the position is regulated by contacting the case.
- the light receiving surface of the image sensor 51 can be accurately positioned at the focal position of the lens unit OU simply by placing the lens frame 40 on the substrate 52.
- FIG. 20 is a diagram illustrating a state in which the imaging device 50 is installed in a mobile phone 100 as a mobile terminal that is a digital device.
- FIG. 21 is a control block diagram of the mobile phone 100.
- the imaging device 50 is disposed, for example, such that the object-side end surface of the lens unit OU is provided on the back surface of the mobile phone 100 (the liquid crystal display unit side is the front surface) and corresponds to a position below the liquid crystal display unit. .
- the external connection terminal (not shown) of the imaging device 50 is connected to the control unit 101 of the mobile phone 100 and outputs an image signal such as a luminance signal or a color difference signal to the control unit 101 side.
- the cellular phone 100 controls each part in an integrated manner, and supports and inputs a control part (CPU) 101 that executes a program corresponding to each process, and a number and the like with keys.
- An input unit 60 a display unit 70 for displaying captured images and videos, a wireless communication unit 80 for realizing various information communications with an external server, a system program and various processing programs for the mobile phone 100,
- a storage unit (ROM) 91 that stores necessary data such as a terminal ID, and various processing programs and data executed by the control unit 101, processing data, imaging data by the imaging device 50, and the like are temporarily stored.
- a temporary storage unit (RAM) 92 used as a work area for storage.
- an image signal of a still image or a moving image is captured by the image sensor 51.
- the photographer presses the button BT shown in FIG. 20 at a desired photo opportunity the release is performed, and the image signal is taken into the imaging device 50.
- the image signal input from the imaging device 50 is transmitted to the control system of the mobile phone 100 and stored in the storage unit 92 or displayed on the display unit 70, and further, video information is transmitted via the wireless communication unit 80. Will be transmitted to the outside.
- a concave portion is provided on the surface of the first glass lens array using a mold
- a convex portion is provided on the surface of the second glass lens array, so that the concave portion and the convex portion are fitted with each other.
- a third glass lens array may be obtained by bonding the second glass lens array.
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Abstract
Description
第1組金型間にガラス素材を配置し、当該第1組金型を型締めすることでガラス成形することにより、所定の配列で形成された複数の第1レンズ部と、第1位置決め基準面とを有する第1ガラスレンズアレイを成形するステップと、
第2組金型間にガラス素材を配置し、当該第2組金型を型締めすることでガラス成形することにより、所定の配列で形成された複数の第2レンズ部と、第2位置決め基準面とを有する第2ガラスレンズアレイを成形するステップと、
前記第1位置決め基準面及び前記第2位置決め基準面を用いて、前記第1ガラスレンズアレイ及び前記第2ガラスレンズアレイの各レンズ部の光軸が一致するように積層、接合して第3ガラスレンズアレイを形成するステップと、
前記第3ガラスレンズアレイを、少なくとも前記第1レンズ部及び前記第2レンズ部を各々一つずつ含むレンズユニット毎に切断するステップと、
を有することを特徴とする。
筒状の貫通孔が複数形成され、当該貫通孔と平行な第1の側面部を有する第1上金型スリーブと、前記貫通孔に各々が挿入され、一端にレンズ部を形成するための転写面を有する複数の第1上金型コア部材と、を有する第1上金型と、
筒状の貫通孔が複数形成され、当該貫通孔と平行な第2の側面部を有する第1下金型スリーブと、前記貫通孔に各々が挿入され、一端にレンズ部を形成するための転写面を有する複数の第1下金型コア部材と、を有する第1下金型と、
筒状の貫通孔が複数形成され、当該貫通孔と平行な第3の側面部を有する第2上金型スリーブと、前記貫通孔に各々が挿入され、一端にレンズ部を形成するための転写面を有する複数の第2上金型コア部材と、を有する第2上金型と、
筒状の貫通孔が夫々形成され、当該貫通孔と平行な第4の側面部を有する第2下金型スリーブと、前記貫通孔に各々が挿入され、一端にレンズ部を形成するための転写面を有する複数の第2下金型コア部材と、を有する第2下金型と、
を用い、前記第1上金型及び前記第1下金型との間にガラス素材を配置し、当該第1上下金型を型締めすることでガラス製の複数のレンズ部とフランジ部とが一体形成された第1ガラスレンズアレイを成形し、前記第2上金型及び前記第2下金型との間にガラス素材を配置し、当該第2上下金型を型締めすることでガラス製の複数のレンズ部とフランジ部とが一体形成された第2ガラスレンズアレイを成形し、前記第1ガラスレンズアレイ及び前記第2ガラスレンズアレイを積層、接合してガラスレンズアレイ積層体を得るための前記第1上下金型及び前記第2上下金型の製造方法であって、
前記第1上金型、前記第1下金型、前記第2上金型及び前記第2下金型を積層し、前記第1上金型、前記第1下金型、前記第2上金型及び前記第2下金型の各貫通孔を機械加工で同時加工することを特徴とする。
複数筒状の複数の貫通孔が形成された上金型スリーブと、前記複数の貫通孔の各々に挿入される、一端にレンズ部を形成するための転写面を有する複数の上金型コア部材と、を有する、鉛直方向上方に配置される上金型と、
前記上金型と転写面が対向して鉛直方向下方に配置される下金型と、を有し、
前記上金型及び前記下金型との間にガラス素材を配置し、前記上金型上及び前記下金型を型締めすることでガラス製の複数のレンズ部とフランジ部とが一体形成されたガラスレンズアレイを成形することを特徴とする。
前記上金型コア部材及び前記下金型コア部材の少なくとも一方は、前記上金型スリーブ及び前記下金型スリーブの少なくとも一方に対して、スペーサを用いて突出量を調整可能に配置されることが好ましい。これにより、成形時におけるコアの突き出し量の調整が容易になる。
鉛直方向下方に配置された前記複数のレンズ部のレンズ面に対応する複数の転写面を有する前記下金型を準備する工程と、前記下金型に対して、上方から、少なくとも2つの前記レンズ部を成形するのに必要な量の溶融ガラスを一括滴下する工程と、溶融ガラスが滴下された前記下金型に対して前記上金型を配置し、前記上金型及び前記下金型を型締めする工程と、を有することを特徴とする。
(1)従来のガラスレンズ成形のような予めレンズ部の近似形状に形成されたプリフォームを金型の各成形面内に配置して、それらを加熱、冷却して成形する方法
(2)液状の溶融ガラスを成形面に上方から滴下し、それらを加熱することなく、冷却して成形する方法
のいずれの方法も取り得るが、本発明の実施の形態ではガラスレンズアレイを成形するという構成上、特にレンズ部と非レンズ部(複数のレンズ部間又は中間体の端部を形成する部分)との芯厚の差を大きく取ることができる(2)の方法が好ましく、更に各成形面に個別にガラスを滴下する方法ではなく、大きなガラス滴、すなわち少なくとも2つの成形面に十分に充填される体積の溶融ガラス滴を一括滴下する方法が好ましい。また滴下位置は、充填を予定している複数の成形面から等距離の位置に滴下する方法がより好ましい。係る構成をとることにより、各成形面に充填されるガラス滴の時間差が小さくなり、成形されるレンズ形状の形状差、光学性能への悪影響が軽減される。勿論、当該時間差を考慮して各成形面に個別にガラス滴を同時に滴下しても同様な効果が得られるが、ガラスの小滴化は構成上装置が大型、複雑となるため、前者の方がより好ましい。
2 金型スリーブ
2a 開口
2b 小径部
2c 貫通孔
3 コア
3a 成形転写面
3b 頭部
3c 軸部
4 底板
5 円盤状スペーサ
11 コア支持部材
12 コア支持部材
12 上金型
12a 開口
12b 下面
12c 基準側面
12d 基準側面
13 コア
13a 転写面
13d 円形段部
19 上部ホルダ
21 コア支持部材
22 コア支持部材
22 下金型
22a 開口
22b 上面
22c 基準側面
22e 溝
22f マーク
22g テーパ部
22x 基準面
22y 基準面
23 コア
23a 転写面
29 下部ホルダ
40 鏡枠
40a フランジ部
40b 開口
40c 内周面
50 撮像装置
51 イメージセンサ
51a 光電変換部
52 基板
60 入力部
70 表示部
80 無線通信部
92 記憶部
100 携帯電話機
101 制御部
BH ボルト孔
BT ボタン
CG カバーガラス
DB ダイシングブレード
F1 矩形板状フランジ
F2 矩形板状フランジ
IM1 第1ガラスレンズアレイ
IM2 第2ガラスレンズアレイ
IM3 第3ガラスレンズアレイ
JZ 治具
L1 第1レンズ部
L2 第2レンズ部
MG マグネット
NZ 白金ノズル
OU レンズユニット
SH 遮光部材
SPx バネ
SPy バネ
Claims (15)
- レンズユニットの製造方法であって、
第1組金型間にガラス素材を配置し、当該第1組金型を型締めすることでガラス成形することにより、所定の配列で形成された複数の第1レンズ部と、第1位置決め基準面とを有する第1ガラスレンズアレイを成形するステップと、
第2組金型間にガラス素材を配置し、当該第2組金型を型締めすることでガラス成形することにより、所定の配列で形成された複数の第2レンズ部と、第2位置決め基準面とを有する第2ガラスレンズアレイを成形するステップと、
前記第1位置決め基準面及び前記第2位置決め基準面を用いて、前記第1ガラスレンズアレイ及び前記第2ガラスレンズアレイの各レンズ部の光軸が一致するように積層、接合して第3ガラスレンズアレイを形成するステップと、
前記第3ガラスレンズアレイを、少なくとも前記第1レンズ部及び前記第2レンズ部を各々一つずつ含むレンズユニット毎に切断するステップと、
を有することを特徴とするレンズユニットの製造方法。 - 前記第1位置決め基準面は、前記第1レンズ部の光軸に対して平行に形成され、互いに交差する方向の第1基準面部及び第2基準面部で構成され、
前記第2位置決め基準面は、前記第2レンズ部の光軸に対して平行に形成され、互いに交差する方向の第3基準面部及び第4基準面部で構成されていることを特徴とする請求項1に記載のレンズユニットの製造方法。 - 前記第1位置決め基準面は、前記第1レンズ部の光軸に直交する第1傾き基準面部を有し、
前記第2位置決め基準面は、前記第2レンズ部の光軸に直交する第2傾き基準面部を有することを特徴とする請求項1又は請求項2に記載のレンズユニットの製造方法。 - 前記第1ガラスレンズアレイと前記第2ガラスレンズアレイとを接合するステップは、前記第1ガラスレンズアレイを鉛直方向下方に載置して前記第1位置決め基準面に付勢力を付与した状態で、その鉛直方向上方に保持した前記第2ガラスレンズアレイを、前記第2位置決め基準面に付勢力を付与した状態で接近させるステップを含むことを特徴とする請求項1~3の何れか1項に記載のレンズユニットの製造方法。
- 前記第1ガラスレンズアレイは、前記第1位置決め基準面を示す第1マークを有し、前記第2ガラスレンズアレイは、前記第2位置決め基準面を示す第2マークを有することを特徴とする請求項1~4の何れか1項に記載のレンズユニットの製造方法。
- 前記第1ガラスレンズアレイ及び前記第2ガラスレンズアレイのうち少なくとも一方を成形するステップは、溶融したガラス素材を鉛直方向上方から前記第1組金型及び前記第2組金型の少なくとも一方の組金型の下金型に落下させた後、成形を行うステップを含むことを特徴とする請求項1~5の何れか1項に記載の製造方法。
- 請求項1~6の何れか1項に記載のレンズユニットの製造方法により製造されたレンズユニットと、前記レンズユニットを囲う鏡枠とを有し、前記レンズユニットのレンズ部又はレンズ部を延長する面が鏡枠に対して位置決めされたことを特徴とする撮像装置。
- 筒状の貫通孔が複数形成され、当該貫通孔と平行な第1の側面部を有する第1上金型スリーブと、前記貫通孔に各々が挿入され、一端にレンズ部を形成するための転写面を有する複数の第1上金型コア部材と、を有する第1上金型と、
筒状の貫通孔が複数形成され、当該貫通孔と平行な第2の側面部を有する第1下金型スリーブと、前記貫通孔に各々が挿入され、一端にレンズ部を形成するための転写面を有する複数の第1下金型コア部材と、を有する第1下金型と、
筒状の貫通孔が複数形成され、当該貫通孔と平行な第3の側面部を有する第2上金型スリーブと、前記貫通孔に各々が挿入され、一端にレンズ部を形成するための転写面を有する複数の第2上金型コア部材と、を有する第2上金型と、
筒状の貫通孔が夫々形成され、当該貫通孔と平行な第4の側面部を有する第2下金型スリーブと、前記貫通孔に各々が挿入され、一端にレンズ部を形成するための転写面を有する複数の第2下金型コア部材と、を有する第2下金型と、
を用い、前記第1上金型及び前記第1下金型との間にガラス素材を配置し、当該第1上下金型を型締めすることでガラス製の複数のレンズ部とフランジ部とが一体形成された第1ガラスレンズアレイを成形し、前記第2上金型及び前記第2下金型との間にガラス素材を配置し、当該第2上下金型を型締めすることでガラス製の複数のレンズ部とフランジ部とが一体形成された第2ガラスレンズアレイを成形し、前記第1ガラスレンズアレイ及び前記第2ガラスレンズアレイを積層、接合してガラスレンズアレイ積層体を得るための前記第1上下金型及び前記第2上下金型の製造方法であって、
前記第1上金型、前記第1下金型、前記第2上金型及び前記第2下金型を積層し、前記第1上金型、前記第1下金型、前記第2上金型及び前記第2下金型の各貫通孔を機械加工で同時加工することを特徴とする金型の製造方法。 - 前記貫通孔の同時加工と共に機械加工により前記第1の側面部、前記第2の側面部、前記第3の側面部及び前記第4の側面部の形成加工を行うことを特徴とする請求項8に記載の金型の製造方法。
- 複数のレンズ部と、フランジ部とが一体形成されたガラスレンズアレイを成形する成形金型であって、
複数筒状の複数の貫通孔が形成された上金型スリーブと、前記複数の貫通孔の各々に挿入される、一端にレンズ部を形成するための転写面を有する複数の上金型コア部材と、を有する、鉛直方向上方に配置される上金型と、
前記上金型と転写面が対向して鉛直方向下方に配置される下金型と、を有し、
前記上金型及び前記下金型との間にガラス素材を配置し、前記上金型上及び前記下金型を型締めすることでガラス製の複数のレンズ部とフランジ部とが一体形成されたガラスレンズアレイを成形することを特徴とする成形金型。 - 前記上金型の貫通孔径は上方から下方の全体に亘り同一径で構成されると共に、前記上金型スリーブに対して前記上金型コア部材を鉛直に抗して保持する保持手段を備えることを特徴とする請求項10に記載の成形金型。
- 前記保持手段はマグネットであり、前記上金型コア部材の少なくとも一部は磁性材料からなることを特徴とする請求項11に記載の成形金型。
- 前記下金型は筒状の貫通孔が形成された下金型スリーブと、前記貫通孔に挿入される、一端にレンズ部を形成するための転写面を有する複数の下金型コア部材と、を有し、
前記上金型コア部材及び前記下金型コア部材の少なくとも一方は、前記上金型スリーブ及び前記下金型スリーブの少なくとも一方に対して、スペーサを用いて突出量を調整可能に配置されていることを特徴とする請求項10~12の何れか1項に記載の成形金型。 - 鉛直方向に配置された上金型と下金型との間にガラス素材を配置して、当該上金型及び下金型を型締めすることで、フランジ部と、複数のレンズ部が一体形成されたガラスレンズアレイを成形するガラスレンズアレイの成形方法であって、
鉛直方向下方に配置された前記複数のレンズ部のレンズ面に対応する複数の転写面を有する前記下金型を準備する工程と、
前記下金型に対して、上方から、少なくとも2つの前記レンズ部を成形するのに必要な量の溶融ガラスを一括滴下する工程と、
溶融ガラスが滴下された前記下金型に対して前記上金型を配置し、前記上金型及び前記下金型を型締めする工程と、
を有することを特徴とするガラスレンズアレイの成形方法。 - 前記工程で滴下される溶融ガラスは、前記レンズ部を形成する複数の転写面から等距離の位置に滴下されることを特徴とする請求項14に記載のガラスレンズアレイの成形方法。
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US13/575,839 US20120300320A1 (en) | 2010-02-01 | 2011-02-01 | Method for Manufacturing Lens Unit, Imaging Device, Method for Manufacturing Mold, Mold For Molding, and Method for Molding Glass Lens Array |
CN201180006918.1A CN102712515B (zh) | 2010-02-01 | 2011-02-01 | 透镜单元的制造方法、摄像装置、模具的制造方法、成型模具以及玻璃透镜阵列的成型方法 |
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WO2011102056A1 (ja) * | 2010-02-19 | 2011-08-25 | コニカミノルタオプト株式会社 | 撮像レンズユニット |
US20140368723A1 (en) * | 2013-06-18 | 2014-12-18 | Samsung Electro-Mechanics Co., Ltd. | Lens module and camera module including the same |
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JP2023089794A (ja) * | 2021-12-16 | 2023-06-28 | パナソニックIpマネジメント株式会社 | 撮像装置 |
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