WO2011132520A1 - レンズアレイの製造方法および積層型レンズアレイの製造方法 - Google Patents
レンズアレイの製造方法および積層型レンズアレイの製造方法 Download PDFInfo
- Publication number
- WO2011132520A1 WO2011132520A1 PCT/JP2011/058502 JP2011058502W WO2011132520A1 WO 2011132520 A1 WO2011132520 A1 WO 2011132520A1 JP 2011058502 W JP2011058502 W JP 2011058502W WO 2011132520 A1 WO2011132520 A1 WO 2011132520A1
- Authority
- WO
- WIPO (PCT)
- Prior art keywords
- lens
- array
- curable resin
- resin
- lens array
- Prior art date
Links
Images
Classifications
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
- B29D—PRODUCING PARTICULAR ARTICLES FROM PLASTICS OR FROM SUBSTANCES IN A PLASTIC STATE
- B29D11/00—Producing optical elements, e.g. lenses or prisms
- B29D11/00009—Production of simple or compound lenses
- B29D11/00278—Lenticular sheets
- B29D11/00298—Producing lens arrays
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
- B29C—SHAPING OR JOINING OF PLASTICS; SHAPING OF MATERIAL IN A PLASTIC STATE, NOT OTHERWISE PROVIDED FOR; AFTER-TREATMENT OF THE SHAPED PRODUCTS, e.g. REPAIRING
- B29C43/00—Compression moulding, i.e. applying external pressure to flow the moulding material; Apparatus therefor
- B29C43/02—Compression moulding, i.e. applying external pressure to flow the moulding material; Apparatus therefor of articles of definite length, i.e. discrete articles
- B29C43/021—Compression moulding, i.e. applying external pressure to flow the moulding material; Apparatus therefor of articles of definite length, i.e. discrete articles characterised by the shape of the surface
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
- B29C—SHAPING OR JOINING OF PLASTICS; SHAPING OF MATERIAL IN A PLASTIC STATE, NOT OTHERWISE PROVIDED FOR; AFTER-TREATMENT OF THE SHAPED PRODUCTS, e.g. REPAIRING
- B29C43/00—Compression moulding, i.e. applying external pressure to flow the moulding material; Apparatus therefor
- B29C43/02—Compression moulding, i.e. applying external pressure to flow the moulding material; Apparatus therefor of articles of definite length, i.e. discrete articles
- B29C43/14—Compression moulding, i.e. applying external pressure to flow the moulding material; Apparatus therefor of articles of definite length, i.e. discrete articles in several steps
- B29C43/146—Compression moulding, i.e. applying external pressure to flow the moulding material; Apparatus therefor of articles of definite length, i.e. discrete articles in several steps for making multilayered articles
-
- 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
- G02B13/0085—Miniaturised objectives for electronic devices, e.g. portable telephones, webcams, PDAs, small digital cameras employing wafer level optics
-
- G—PHYSICS
- G02—OPTICS
- G02B—OPTICAL ELEMENTS, SYSTEMS OR APPARATUS
- G02B3/00—Simple or compound lenses
- G02B3/0006—Arrays
- G02B3/0012—Arrays characterised by the manufacturing method
- G02B3/0031—Replication or moulding, e.g. hot embossing, UV-casting, injection moulding
-
- G—PHYSICS
- G02—OPTICS
- G02B—OPTICAL ELEMENTS, SYSTEMS OR APPARATUS
- G02B3/00—Simple or compound lenses
- G02B3/0006—Arrays
- G02B3/0037—Arrays characterized by the distribution or form of lenses
- G02B3/0062—Stacked lens arrays, i.e. refractive surfaces arranged in at least two planes, without structurally separate optical elements in-between
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
- B29C—SHAPING OR JOINING OF PLASTICS; SHAPING OF MATERIAL IN A PLASTIC STATE, NOT OTHERWISE PROVIDED FOR; AFTER-TREATMENT OF THE SHAPED PRODUCTS, e.g. REPAIRING
- B29C35/00—Heating, cooling or curing, e.g. crosslinking or vulcanising; Apparatus therefor
- B29C35/02—Heating or curing, e.g. crosslinking or vulcanizing during moulding, e.g. in a mould
- B29C35/08—Heating or curing, e.g. crosslinking or vulcanizing during moulding, e.g. in a mould by wave energy or particle radiation
- B29C35/0805—Heating or curing, e.g. crosslinking or vulcanizing during moulding, e.g. in a mould by wave energy or particle radiation using electromagnetic radiation
- B29C2035/0833—Heating or curing, e.g. crosslinking or vulcanizing during moulding, e.g. in a mould by wave energy or particle radiation using electromagnetic radiation using actinic light
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
- B29C—SHAPING OR JOINING OF PLASTICS; SHAPING OF MATERIAL IN A PLASTIC STATE, NOT OTHERWISE PROVIDED FOR; AFTER-TREATMENT OF THE SHAPED PRODUCTS, e.g. REPAIRING
- B29C43/00—Compression moulding, i.e. applying external pressure to flow the moulding material; Apparatus therefor
- B29C43/32—Component parts, details or accessories; Auxiliary operations
- B29C43/36—Moulds for making articles of definite length, i.e. discrete articles
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
- B29L—INDEXING SCHEME ASSOCIATED WITH SUBCLASS B29C, RELATING TO PARTICULAR ARTICLES
- B29L2011/00—Optical elements, e.g. lenses, prisms
- B29L2011/0016—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
- G02B13/0015—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
- G02B13/003—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 two lenses
Definitions
- the present invention relates to a method for manufacturing a lens array and a method for manufacturing a laminated lens array.
- a lens array in which a large number of lenses are formed in an array shape is manufactured, and then the lens arrays are stacked or the lens array and the sensor array (
- a method of cutting (separating) each lens part by stacking a sensor group in which sensors are arranged in an array and corresponding to the number and arrangement of lens parts of the lens array is known. According to such a method, first, as shown in FIG. 5A, two array molds 100 and 110 having a plurality of concave shapes (or convex shapes) corresponding to the lens shape are prepared. A light or heat curable resin 120 is applied. Thereafter, as shown in FIG.
- one of the array molds 100 and 110 is moved to the other, the curable resin 120 is filled between the array molds 100 and 110, and light or heat is supplied to the curable resin 120 to be curable.
- the resin 120 is cured.
- the array molds 100 and 110 are released, and the lens array 122 composed of the cured curable resin 120 is manufactured (see, for example, Patent Document 1).
- JP 2009-279774 paragraphs 0031, 0071 to 0072, 0074 to 0078, etc.
- a main object of the present invention is to provide a method of manufacturing a lens array and a method of manufacturing a laminated lens array that can suppress fluctuations in the lens pitch.
- a first aspect of the invention Filling and curing the first curable resin between the first array mold and the flat plate member; Separating the flat plate members; While the first curable resin after curing is left in the first array mold, a second curable resin is filled between the first array mold and the second array mold and cured. Process, Releasing the first array type and the second array type; A method for manufacturing a lens array is provided.
- the first curable resin after curing in the first array mold A step of forming a diaphragm on the first curable resin after curing is left as it is.
- a second aspect of the invention Filling and curing the first curable resin between the first array mold and the second array mold; Releasing the second array mold; Filling and curing the second curable resin between the third array type and the fourth array type; Releasing the fourth array mold; The first cured curable resin is left in the first array mold and the cured second curable resin is left in the third array mold. Bonding the curable resin and the second curable resin after curing; Releasing the first array type and the third array type; A method for manufacturing a laminated lens array is provided.
- the cured first curable resin is left on the first array mold while leaving the cured first curable resin. Forming a diaphragm.
- the step of filling the second curable resin and curing the second curable resin leaves the first curable resin after curing in the first array mold. Since the above process is performed, it is possible to suppress fluctuations in the distance between the lens portions due to the first curable resin at least between the filling of the second curable resin and the curing thereof. Furthermore, in the first aspect of the present invention, an adhesive can be dispensed with, and costs and processes can be reduced. In particular, if a diaphragm is formed during the molding of the first curable resin and the molding of the second curable resin, the diaphragm is formed inside the imaging lens itself.
- the diaphragm is provided at the position where the flat plate member is molded, the surface on which the diaphragm is formed is a flat surface, and the diaphragm can be molded with high accuracy. In this case, there is an advantage that it is possible to adopt a method that is difficult to achieve accuracy on a curved surface, such as photolithography / screen printing.
- the first array mold in the step of bonding the first curable resin after curing and the second curable resin after curing, has the first after curing. Since the process is performed with the curable resin left and the third curable resin remaining in the third array mold, the at least the first curable resin after curing and after the curing. During the bonding with the second curable resin, it is possible to suppress fluctuations in the distance between the lens portions due to the first curable resin and the distance between the lens portions due to the second curable resin. In particular, if the diaphragm is formed before the first curable resin after curing and the second curable resin after curing are bonded, the diaphragm is formed inside the multilayer imaging lens itself. Become. In this case, it is not necessary to provide a separate diaphragm outside the multilayer imaging lens, and it is possible to prevent a positional deviation from the diaphragm.
- FIG. 2A is a drawing schematically showing a subsequent process of FIG. 2B.
- 2D is a drawing schematically showing a subsequent process of FIG. 2C.
- 2D schematically illustrates a subsequent process of FIG. 2D.
- 2E succeedingly.
- 2D is a diagram schematically illustrating a subsequent process of FIG. 2F.
- FIG. 2F is sectional drawing which shows schematic structure of a laminated
- FIG. 4B is a sectional view schematically showing a step subsequent to FIG. 4A.
- FIG. 4B is a cross-sectional view schematically showing a step subsequent to FIG. 4B.
- FIG. 4D is a cross-sectional view schematically showing a step subsequent to FIG. 4C.
- FIG. 4D is a cross-sectional view schematically showing a step subsequent to FIG. 4D.
- FIG. 4D is a cross-sectional view schematically showing a step subsequent to FIG. 4E.
- 6 is a schematic view illustrating a conventional method for manufacturing a lens array.
- 5B is a drawing schematically showing a subsequent process of FIG. 5A.
- FIG. 5B is a diagram schematically illustrating a subsequent process of FIG. 5B.
- the imaging lens 2 is an optical lens in which a resin portion 4 and a resin portion 6 are combined.
- a convex lens portion 4 a is formed on the resin portion 4.
- a non-lens portion 4b (flange) is formed around the convex lens portion 4a.
- a convex lens portion 6 a is also formed on the resin portion 6.
- a non-lens portion 6b (flange) is formed around the convex lens portion 6a.
- the convex lens part 4a of the resin part 4 and the convex lens part 6a of the resin part 6 are arranged at positions corresponding to each other.
- the optical axis is made to coincide with each central part of the convex lens part 4a and the convex lens part 6a.
- a diaphragm 8 is formed at the interface between the resin part 4 and the resin part 6 and at a position where the non-lens part 4b of the resin part 4 and the non-lens part 6b of the resin part 6 face each other.
- the resin part 4 is made of resin 4A
- the resin part 6 is made of resin 6A.
- the resins 4A and 6A are curable resins that are cured by heat or light.
- the resin 4A and the resin 6A are different from each other in type (dispersion (Abbe number)). Specifically, a low dispersion material is used as the resin 4A, and a high dispersion material is used as the resin 6A.
- the resins 4A and 6A may be the same type of resin.
- a resin 4A is applied to the lens array mold 10.
- the lens array mold 10 has a plurality of recesses 12 formed in an array (lattice).
- the concave portion 12 corresponds to the shape of the convex lens portion 4 a of the imaging lens 2.
- FIG. 2B one of the lens array mold 10 and the flat plate member 20 is moved to the other, the resin 4A is filled between the lens array mold 10 and the flat plate member 20, and the resin 4A is heated or lighted. Harden.
- the flat plate member 20 is separated.
- a diaphragm 8 is formed on the cured resin 4A.
- the diaphragm 8 may be formed by a photolithography technique using a photoresist containing a black pigment, the diaphragm 8 may be formed by etching a metal material such as chromium, or ink jet or screen printing.
- the diaphragm 8 may be formed by a technique.
- a black member having the same shape as the lens array and having a light transmitting hole formed at a position corresponding to the convex lens portion 4a and being difficult to change in size is sandwiched between the resins 4A and 6A.
- the resin 6A is applied to the lens array mold 30.
- the lens array mold 30 has a plurality of recesses 32 formed in an array (lattice).
- the concave portion 32 corresponds to the shape of the convex lens portion 6 a of the imaging lens 2.
- one of the lens array mold 30 and the lens array mold 10 is moved to the other while leaving the cured resin 4A and the diaphragm 8 in the lens array mold 10, and the resin 6A is moved to the lens array.
- the resin is filled between the mold 30 and the lens array mold 10, and the resin 6A is cured by heat or light.
- alignment marks for alignment are formed in advance on the lens array molds 10 and 30, and the lens array molds 10 and 30 are aligned by matching the alignment marks.
- the lens array molds 10 and 30 may be provided with alignment guides in advance, and the lens array molds 10 and 30 may be aligned by abutting each guide. Thereafter, as shown in FIG. 2G, the lens array molds 10 and 30 are separated from the cured resins 4A and 6A, and the lens array 34 composed of the cured resins 4A and 6A is manufactured. Thereafter, when the lens array 34 is cut into the convex lens portions 4a and 6a, a plurality of imaging lenses 2 are manufactured. Moreover, it is not limited to the said correspondence, It is also possible to ship in the state of the lens array 34.
- the cured resin 4A is cured. Since the process is performed while leaving the lens array mold 10 left, the cured resin 4A is maintained in the concave portion 12 at least during that time, and the fluctuation of the interval between the convex lens portions 4a due to the resin 4A can be suppressed.
- the resin part 4 and the resin part 6 are formed by using different types of resins for the resin 4A and the resin 6A, the optical performance is compared with the case of manufacturing the imaging lens using a single resin material. And the degree of freedom in design can be improved.
- the resin 4A is cured using the flat plate member 20, one surface of the cured resin 4A is smoothed, and the diaphragm 8 can be easily formed inside the imaging lens 2.
- a diaphragm 36 such as a housing with an opening corresponding to the convex lens portion 4a, see FIG. 1 outside the imaging lens 2, and the imaging lens 2 and the diaphragm 36 (opening position) It is not necessary to align the position and the like, and the handleability (general versatility) of the imaging lens 2 can be improved.
- the concave / convex shape of the convex lens portion 4a of the resin portion 4 and the convex lens portion 6a of the resin portion 6 can be appropriately changed.
- the lens array molds 10 and 30 having convex portions or concave portions corresponding to the concave / convex shape are used. That's fine.
- the laminated imaging lens 40 is a combined lens in which two lenses of a lens 42 and a lens 44 are combined.
- the lens 42 is formed with a convex lens portion 42a and a concave lens portion 42b.
- a non-lens portion 42c (flange) is formed around the convex lens portion 42a and the concave lens portion 42b.
- the lens 44 is also formed with a convex lens portion 44a and a concave lens portion 44b.
- a non-lens portion 44c (flange) is formed around the convex lens portion 44a and the concave lens portion 44b.
- the convex lens portion 42a and concave lens portion 42b of the lens 42 and the convex lens portion 44a and concave lens portion 44b of the lens 44 are disposed at positions corresponding to each other.
- the concave lens portion 42b of the lens 42 and the concave lens portion 44b of the lens 44 are disposed to face each other.
- the optical axes coincide with the central portions of the convex lens portion 42a, the concave lens portion 42b, the convex lens portion 44a, and the concave lens portion 44b.
- a diaphragm 46 is formed at the interface between the lens 42 and the lens 44 at a position where the non-lens portion 42c of the lens 42 and the non-lens portion 44b of the lens 44 face each other.
- the convex lens portion 42a may be a concave lens portion
- the concave lens 42b may be a convex lens portion
- the convex lens portion 44a may be a concave lens portion
- the concave lens 44b may be a convex lens portion, or a combination thereof. May be.
- the lens 42 is made of resin 42A
- the lens 44 is made of resin 44A.
- the resins 42A and 44A are curable resins that are cured by heat or light.
- the resin 42A and the resin 44A have different types (dispersion (Abbe number)), specifically, a low dispersion material is used as one of the resins 42A and 44A, and a high dispersion material is used as the other. Yes.
- the resins 42A and 44A may be made of a material having the same refractive index.
- the resins 42A and 46A may be the same type of resin.
- a resin 42A is applied to the lens array mold 50.
- the lens array mold 50 has a plurality of recesses 52 formed in an array (lattice).
- the concave portion 52 corresponds to the shape of the convex lens portion 42 a of the lens 42.
- one of the lens array mold 50 and the lens array mold 60 is moved to the other, the resin 42A is filled between the lens array mold 50 and the lens array mold 60, and cured by heat or light.
- the lens array mold 60 has a plurality of convex portions 62 formed in an array (lattice).
- the convex part 62 corresponds to the shape of the concave lens part 42 b of the lens 42.
- alignment marks for alignment are formed in advance on the lens array molds 50 and 60, and the lens array molds 50 and 60 are aligned by matching the alignment marks.
- FIG. 4C the lens array mold 60 is released.
- a diaphragm 46 is formed on the cured resin 42A.
- the diaphragm 46 can be formed by the same method as the diaphragm 8 according to the first embodiment.
- the diaphragm 46 may extend to a part of the concave lens portion 42b.
- the diaphragm 46 is preferably formed by an ink jet printing technique. At this time, it is desirable that the portion corresponding to the portion where the diaphragm 46 of the lens array mold 60 is formed has a planar shape.
- a lens array mold 70 is prepared through the same steps as in FIGS. 4A to 4C, leaving the cured resin 44A as shown in FIG. 4D.
- the lens array mold 50 and the lens array mold 50 are left with the cured resin 42A and the diaphragm 46 left in the lens array mold 50, and the cured resin 44A is left in the lens array mold 70.
- One of the two is moved to the other, and the cured resin 42A and the diaphragm 46 are bonded to the cured resin 44A.
- an alignment mark for alignment is formed in advance on the lens array molds 50 and 70, the lens array molds 50 and 70 are aligned by matching each alignment mark, and bonded with an adhesive or the like. I do.
- the lens array molds 50 and 70 are separated from the cured resins 42A and 44A, and a laminated lens array 72 composed of the cured resins 42A and 44A is manufactured. After that, when the multilayer lens array 72 is cut for each convex lens portion 42a (or concave lens portion 42b, convex lens portion 44a, concave lens portion 44b), a plurality of multilayer imaging lenses 40 are manufactured. Moreover, it is not limited to the said correspondence, It is also possible to ship with the state of the lens array 72.
- the lens array molds 50 and 70 are released. Since the processing is performed while the cured resins 42A and 44A remain in the lens array molds 50 and 70 during the interval (see FIG. 4F), the cured resins 42A and 44A are maintained in the recesses 52 and 72 at least during that period. It can suppress that the space
- the lens 42 and the lens 44 are formed by using different types of resins for the resin 42A and the resin 44A, optical performance is compared with the case of manufacturing a laminated imaging lens using a single resin material. And the degree of freedom in design can be improved.
- the diaphragm 46 is formed in the cured resin 42A, and then the cured resin 42A and the cured resin 44A are bonded, the diaphragm 46 can be formed inside the multilayer imaging lens 40.
- a diaphragm 74 such as a housing having an opening corresponding to the convex lens portion 42a, see FIG. 3 outside the multilayer imaging lens 40, and the multilayer imaging lens 40 and the diaphragm 74 (opening). It is not necessary to align the position with the position), and the handleability (general versatility) of the laminated imaging lens 40 can be improved.
- the concave and convex shapes of the convex lens portion 42a and concave lens portion 42b of the lens 42 and the convex lens portion 44a and concave lens portion 44b of the lens 44 can be appropriately changed.
- a lens array type having convex portions or concave portions corresponding to the concave and convex shapes. 50, 60, 70 may be used.
- the present invention can be suitably used for manufacturing an imaging lens and an imaging apparatus including the imaging lens.
- Imaging lens 4 Resin part 4A Resin 4a Convex lens part 4b Non-lens part (flange) 6 Resin part 6A Resin 6a Convex lens part 6b Non-lens part (flange) 8 Diaphragm 10 Lens Array Type 12 Concave 20 Flat Plate 30 Lens Array Type 32 Concave 34 Lens Array 36 Diaphragm 40 Multilayer Imaging Lens 42 Lens 42A Resin 42a Convex Lens Part 42b Concave Lens Part 42c Non-Lens Part (Flange) 44 Lens 44A Resin 44a Convex lens part 44b Concave lens part 44c Non-lens part (flange) 46 Diaphragm 50 Lens array type 52 Concave portion 60 Lens array type 62 Convex portion 70 Lens array type 72 Laminated lens array 74 Diaphragm 100,110 Array type 120 Curable resin 122 Lens array
Landscapes
- Physics & Mathematics (AREA)
- Engineering & Computer Science (AREA)
- General Physics & Mathematics (AREA)
- Optics & Photonics (AREA)
- Mechanical Engineering (AREA)
- Manufacturing & Machinery (AREA)
- Health & Medical Sciences (AREA)
- Ophthalmology & Optometry (AREA)
- Lens Barrels (AREA)
- Casting Or Compression Moulding Of Plastics Or The Like (AREA)
Abstract
Description
このような方法によれば、まずは、図5Aに示すとおり、レンズ形状に対応した複数の凹形状(または凸形状)を有する2個のアレイ型100,110を準備し、一方のアレイ型100に光または熱の硬化性樹脂120を塗布する。その後、図5Bに示すとおり、アレイ型100,110の一方を他方に移動させ、アレイ型100,110の間に硬化性樹脂120を充填し、硬化性樹脂120に光または熱を供給し硬化性樹脂120を硬化させる。その後、図5Cに示すとおり、アレイ型100,110を離型し、硬化後の硬化性樹脂120から構成されるレンズアレイ122が製造される(たとえば特許文献1参照)。
したがって、本発明の主な目的は、レンズピッチの変動を抑制することができるレンズアレイの製造方法および積層型レンズアレイの製造方法を提供することにある。
第1のアレイ型と平板部材との間に第1の硬化性樹脂を充填して硬化させる工程と、
前記平板部材を離間させる工程と、
前記第1のアレイ型に硬化後の前記第1の硬化性樹脂を残したまま、前記第1のアレイ型と第2のアレイ型との間に第2の硬化性樹脂を充填して硬化させる工程と、
前記第1のアレイ型と前記第2のアレイ型とを離型する工程と、
を備えることを特徴とするレンズアレイの製造方法が提供される。
第1のアレイ型と第2のアレイ型との間に第1の硬化性樹脂を充填して硬化させる工程と、
前記第2のアレイ型を離型する工程と、
第3のアレイ型と第4のアレイ型との間に第2の硬化性樹脂を充填して硬化させる工程と、
前記第4のアレイ型を離型する工程と、
前記第1のアレイ型に硬化後の前記第1の硬化性樹脂を残し、かつ、前記第3のアレイ型に硬化後の前記第2の硬化性樹脂を残したまま、硬化後の前記第1の硬化性樹脂と硬化後の前記第2の硬化性樹脂とを接着する工程と、
前記第1のアレイ型と前記第3のアレイ型とを離型する工程と、
を備えることを特徴とする積層型レンズアレイの製造方法が提供される。
特に、第1の硬化性樹脂の成形と第2の硬化性樹脂の成形との途中で絞りを形成すれば、その絞りは撮像用レンズ自体の内部に形成されることとなる。この場合、撮像用レンズの外側に別途絞りを設ける必要がなくなり、当該絞りとの位置ズレが発生するのを防止することができる。更に平板部材で成形を行った箇所に絞りを設けていることから、絞りを形成する面が平面であり精度よく絞りを成形できる。この場合、例えばフォトリソ・スクリーン印刷といった、曲面上では精度を出しにくい方法も採用できるなどの利点を有する。
特に、硬化後の第1の硬化性樹脂と硬化後の第2の硬化性樹脂とを接着する前に絞りを形成すれば、その絞りは積層型撮像用レンズ自体の内部に形成されることとなる。この場合、積層型撮像用レンズの外側に別途絞りを設ける必要がなくなり、当該絞りとの位置ズレが発生するのを防止することができる。
図1に示すとおり、撮像用レンズ2は樹脂部4と樹脂部6とを組み合わせた光学レンズである。
樹脂部4には凸レンズ部4aが形成されている。凸レンズ部4aの周辺には非レンズ部4b(フランジ)が形成されている。樹脂部6にも凸レンズ部6aが形成されている。凸レンズ部6aの周辺には非レンズ部6b(フランジ)が形成されている。
樹脂4A,6Aは熱または光で硬化する硬化性樹脂である。
樹脂4Aと樹脂6Aとは互いに種類(分散(アッベ数))が異なっており、具体的には樹脂4Aとして低分散材料が、樹脂6Aとして高分散材料が用いられている。
なお、樹脂4A,6Aは同じ種類の樹脂であってもよい。
その後、図2Bに示すとおり、レンズアレイ型10と平板部材20との一方を他方に移動させ、樹脂4Aをレンズアレイ型10と平板部材20との間に充填し、樹脂4Aを熱または光により硬化させる。
その後、図2Cに示すとおり、平板部材20を離間させる。
その後、図2Dに示すとおり、硬化後の樹脂4Aに対し絞り8を形成する。
この場合、ブラック顔料を含むフォトレジストを用いたフォトリソグラフィ技術により絞り8を形成してもよいし、クロムなどの金属材料をエッチングすることにより絞り8を形成してもよいし、インクジェットまたはスクリーン印刷技術により絞り8を形成してもよい。また例えば、レンズアレイと同形状の黒色の部材であって凸レンズ部4aに対応している位置に透光用の孔が形成され寸法変化しにくい絞り部材などを、樹脂4A,6A間に挟みこむことで、離型後に凸レンズ部4a,6aの間隔が変化するのを防ぎつつ、絞り8を作製することも可能である。
その後、図2Fに示すとおり、硬化後の樹脂4Aと絞り8とをレンズアレイ型10に残したまま、レンズアレイ型30とレンズアレイ型10との一方を他方に移動させ、樹脂6Aをレンズアレイ型30とレンズアレイ型10との間に充填し、樹脂6Aを熱または光により硬化させる。
この場合において、好ましくはレンズアレイ型10,30にあらかじめ位置合わせ用のアライメントマークを形成しておき、各アライメントマークを合致させることでレンズアレイ型10,30を位置合わせする。レンズアレイ型10,30にあらかじめ位置合わせ用のガイドを設けておき、各ガイドを突き当てることでレンズアレイ型10,30を位置合わせしてもよい。
その後、図2Gに示すとおり、レンズアレイ型10,30を硬化後の樹脂4A,6Aから離間し、硬化後の樹脂4A,6Aから構成されるレンズアレイ34が製造される。その後、レンズアレイ34を凸レンズ部4a,6aごとに切断すると、複数の撮像用レンズ2が製造される。また上記対応に限定されず、レンズアレイ34の状態のままで出荷することも可能である。
図3に示すとおり、積層型撮像用レンズ40はレンズ42とレンズ44との2つのレンズを組み合わせた組レンズである。
レンズ42には凸レンズ部42aと凹レンズ部42bとが形成されている。凸レンズ部42a,凹レンズ部42bの周辺には非レンズ部42c(フランジ)が形成されている。
レンズ44にも凸レンズ部44aと凹レンズ部44bとが形成されている。凸レンズ部44a,凹レンズ部44bの周辺には非レンズ部44c(フランジ)が形成されている。
樹脂42A,44Aは熱または光で硬化する硬化性樹脂である。
樹脂42Aと樹脂44Aとは互いに種類(分散(アッベ数))が異なっており、具体的には樹脂42A,44Aのいずれか一方として低分散材料が、残りの一方として高分散材料が用いられている。
ただし、組レンズである積層型撮像用レンズ40の場合は、レンズ42とレンズ44との間に空気間隔を有するため、樹脂42A,44Aは同一の屈折率をもつ材料であってもよい。
なお、樹脂42A,46Aは同じ種類の樹脂であってもよい。
その後、図4Bに示すとおり、レンズアレイ型50とレンズアレイ型60との一方を他方に移動させ、樹脂42Aをレンズアレイ型50とレンズアレイ型60との間に充填し、熱または光により硬化させる。レンズアレイ型60には複数の凸部62がアレイ状(格子状)に形成されている。凸部62はレンズ42の凹レンズ部42bの形状に対応している。
この場合において、好ましくはレンズアレイ型50,60にあらかじめ位置合わせ用のアライメントマークを形成しておき、各アライメントマークを合致させることでレンズアレイ型50,60を位置合わせする。
その後、図4Cに示すとおり、レンズアレイ型60を離型する。
この場合、絞り46は第1の実施形態にかかる絞り8と同様の手法により形成することができる。絞り46は凹レンズ部42bの一部に及んでもよく、この場合には絞り46を形成する面が曲面を含むため、好ましくはインクジェット印刷技術により絞り46を形成するのがよい。
このとき、レンズアレイ型60の絞り46が形成される部位に対応する部位は、平面状を呈することが望ましい。これは例えばフォトリソ・スクリーン印刷といった、曲面上では精度を出しにくい方法も採用できるなどの利点を有するためである。
これとは別に、図4A~図4Cと同様の工程を経て、図4Dに示すとおり、硬化後の樹脂44Aを残したレンズアレイ型70も準備する。
この場合において、好ましくはレンズアレイ型50,70にあらかじめ位置合わせ用のアライメントマークを形成しておき、各アライメントマークを合致させることでレンズアレイ型50,70を位置合わせし、接着剤等で接着を行う。
その後、図4Fに示すとおり、レンズアレイ型50,70を硬化後の樹脂42A,44Aから離間し、硬化後の樹脂42A,44Aから構成される積層型レンズアレイ72が製造される。その後、積層型レンズアレイ72を凸レンズ部42a(または凹レンズ部42b,凸レンズ部44a,凹レンズ部44b)ごとに切断すると、複数の積層型撮像用レンズ40が製造される。また上記対応に限定されず、レンズアレイ72の状態のままで出荷することも可能である。
4 樹脂部
4A 樹脂
4a 凸レンズ部
4b 非レンズ部(フランジ)
6 樹脂部
6A 樹脂
6a 凸レンズ部
6b 非レンズ部(フランジ)
8 絞り
10 レンズアレイ型
12 凹部
20 平板
30 レンズアレイ型
32 凹部
34 レンズアレイ
36 絞り
40 積層型撮像用レンズ
42 レンズ
42A 樹脂
42a 凸レンズ部
42b 凹レンズ部
42c 非レンズ部(フランジ)
44 レンズ
44A 樹脂
44a 凸レンズ部
44b 凹レンズ部
44c 非レンズ部(フランジ)
46 絞り
50 レンズアレイ型
52 凹部
60 レンズアレイ型
62 凸部
70 レンズアレイ型
72 積層型レンズアレイ
74 絞り
100,110 アレイ型
120 硬化性樹脂
122 レンズアレイ
Claims (9)
- 第1のアレイ型と平板部材との間に第1の硬化性樹脂を充填して硬化させる工程と、
前記平板部材を離間させる工程と、
前記第1のアレイ型に硬化後の前記第1の硬化性樹脂を残したまま、前記第1のアレイ型と第2のアレイ型との間に第2の硬化性樹脂を充填して硬化させる工程と、
前記第1のアレイ型と前記第2のアレイ型とを離型する工程と、
を備えることを特徴とするレンズアレイの製造方法。 - 請求項1に記載のレンズアレイの製造方法において、
前記平板部材を離間させる工程の後でかつ前記第2の硬化性樹脂を充填して硬化させる工程の前に、前記第1のアレイ型に硬化後の前記第1の硬化性樹脂を残したまま、硬化後の前記第1の硬化性樹脂上に絞りを形成する工程を含むことを特徴とするレンズアレイの製造方法。 - 請求項1または2に記載のレンズアレイの製造方法において、
前記第1の硬化性樹脂と前記第2の硬化性樹脂とで異なる種類の樹脂を使用することを特徴とするレンズアレイの製造方法。 - 請求項1または2に記載のレンズアレイの製造方法において、
前記第1の硬化性樹脂と前記第2の硬化性樹脂とで同一の樹脂を使用することを特徴とするレンズアレイの製造方法。 - 第1のアレイ型と第2のアレイ型との間に第1の硬化性樹脂を充填して硬化させる工程と、
前記第2のアレイ型を離型する工程と、
第3のアレイ型と第4のアレイ型との間に第2の硬化性樹脂を充填して硬化させる工程と、
前記第4のアレイ型を離型する工程と、
前記第1のアレイ型に硬化後の前記第1の硬化性樹脂を残し、かつ、前記第3のアレイ型に硬化後の前記第2の硬化性樹脂を残したまま、硬化後の前記第1の硬化性樹脂と硬化後の前記第2の硬化性樹脂とを接着する工程と、
前記第1のアレイ型と前記第3のアレイ型とを離型する工程と、
を備えることを特徴とする積層型レンズアレイの製造方法。 - 請求項5に記載の積層型レンズアレイの製造方法において、
前記第2のアレイ型を離型する工程の後に、前記第1のアレイ型に硬化後の前記第1の硬化性樹脂を残したまま、硬化後の前記第1の硬化性樹脂上に絞りを形成する工程を含むことを特徴とする積層型レンズアレイの製造方法。 - 請求項6に記載の積層型レンズアレイの製造方法において、
前記第2のアレイ型の各部位のうち、少なくとも硬化後の前記第1の硬化性樹脂上に前記絞りが形成される部位に対応する部位は、平面であることを特徴とする積層型レンズアレイの製造方法。 - 請求項5~7のいずれか一項に記載の積層型レンズアレイの製造方法において、
前記第1の硬化性樹脂と前記第2の硬化性樹脂とで異なる種類の樹脂を使用することを特徴とする積層型レンズアレイの製造方法。 - 請求項5~7のいずれか一項に記載の積層型レンズアレイの製造方法において、
前記第1の硬化性樹脂と前記第2の硬化性樹脂とで同一の樹脂を使用することを特徴とする積層型レンズアレイの製造方法。
Priority Applications (2)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
US13/642,686 US20130037976A1 (en) | 2010-04-22 | 2011-04-04 | Lens Array Production Method and Laminated Lens Array Production Method |
JP2012511601A JPWO2011132520A1 (ja) | 2010-04-22 | 2011-04-04 | レンズアレイの製造方法および積層型レンズアレイの製造方法 |
Applications Claiming Priority (4)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
JP2010-098346 | 2010-04-22 | ||
JP2010098347 | 2010-04-22 | ||
JP2010-098347 | 2010-04-22 | ||
JP2010098346 | 2010-04-22 |
Publications (1)
Publication Number | Publication Date |
---|---|
WO2011132520A1 true WO2011132520A1 (ja) | 2011-10-27 |
Family
ID=44834054
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
PCT/JP2011/058502 WO2011132520A1 (ja) | 2010-04-22 | 2011-04-04 | レンズアレイの製造方法および積層型レンズアレイの製造方法 |
Country Status (3)
Country | Link |
---|---|
US (1) | US20130037976A1 (ja) |
JP (1) | JPWO2011132520A1 (ja) |
WO (1) | WO2011132520A1 (ja) |
Cited By (2)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
WO2014156960A1 (ja) * | 2013-03-29 | 2014-10-02 | コニカミノルタ株式会社 | 光学素子の製造方法 |
WO2016060199A1 (ja) * | 2014-10-16 | 2016-04-21 | 富士フイルム株式会社 | レンズの製造方法 |
Families Citing this family (3)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US10197806B2 (en) * | 2016-06-07 | 2019-02-05 | Google Llc | Fabrication of air gap regions in multicomponent lens systems |
US11850811B1 (en) | 2019-06-18 | 2023-12-26 | Meta Platforms Technologies, Llc | Monolithic compound lens |
US20200400952A1 (en) * | 2019-06-18 | 2020-12-24 | Facebook Technologies, Llc | Lens with internal aperture |
Citations (4)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JP2008152038A (ja) * | 2006-12-18 | 2008-07-03 | Seiko Epson Corp | マイクロレンズアレイの製造方法、マイクロレンズアレイ、それを用いた有機elラインヘッド及び画像形成装置 |
JP2011016229A (ja) * | 2009-07-07 | 2011-01-27 | Olympus Corp | 積層光学部品の製造方法 |
JP2011059581A (ja) * | 2009-09-14 | 2011-03-24 | Fujifilm Corp | ウェハレベルレンズアレイの製造方法、ウェハレベルレンズアレイ、レンズモジュール及び撮像ユニット |
JP2011064873A (ja) * | 2009-09-16 | 2011-03-31 | Fujifilm Corp | ウェハレベルレンズアレイの製造方法、ウェハレベルレンズアレイ、レンズモジュール及び撮像ユニット |
Family Cites Families (2)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JP3929479B1 (ja) * | 2006-12-21 | 2007-06-13 | マイルストーン株式会社 | 撮像レンズ |
US8102599B2 (en) * | 2009-10-21 | 2012-01-24 | International Business Machines Corporation | Fabrication of optical filters integrated with injection molded microlenses |
-
2011
- 2011-04-04 JP JP2012511601A patent/JPWO2011132520A1/ja active Pending
- 2011-04-04 WO PCT/JP2011/058502 patent/WO2011132520A1/ja active Application Filing
- 2011-04-04 US US13/642,686 patent/US20130037976A1/en not_active Abandoned
Patent Citations (4)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JP2008152038A (ja) * | 2006-12-18 | 2008-07-03 | Seiko Epson Corp | マイクロレンズアレイの製造方法、マイクロレンズアレイ、それを用いた有機elラインヘッド及び画像形成装置 |
JP2011016229A (ja) * | 2009-07-07 | 2011-01-27 | Olympus Corp | 積層光学部品の製造方法 |
JP2011059581A (ja) * | 2009-09-14 | 2011-03-24 | Fujifilm Corp | ウェハレベルレンズアレイの製造方法、ウェハレベルレンズアレイ、レンズモジュール及び撮像ユニット |
JP2011064873A (ja) * | 2009-09-16 | 2011-03-31 | Fujifilm Corp | ウェハレベルレンズアレイの製造方法、ウェハレベルレンズアレイ、レンズモジュール及び撮像ユニット |
Cited By (2)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
WO2014156960A1 (ja) * | 2013-03-29 | 2014-10-02 | コニカミノルタ株式会社 | 光学素子の製造方法 |
WO2016060199A1 (ja) * | 2014-10-16 | 2016-04-21 | 富士フイルム株式会社 | レンズの製造方法 |
Also Published As
Publication number | Publication date |
---|---|
US20130037976A1 (en) | 2013-02-14 |
JPWO2011132520A1 (ja) | 2013-07-18 |
Similar Documents
Publication | Publication Date | Title |
---|---|---|
JP5390277B2 (ja) | マイクロレンズ、マイクロレンズの製造方法、マイクロレンズの製造装置、及びマイクロレンズを備えたカメラモジュール | |
WO2011132520A1 (ja) | レンズアレイの製造方法および積層型レンズアレイの製造方法 | |
JP4466789B2 (ja) | ウエハレンズ集合体の製造方法及びウエハレンズ集合体 | |
US8077394B2 (en) | Glass lens array module with alignment member and manufacturing method thereof | |
JP3154544U (ja) | 小型積層光学ガラスレンズモジュール | |
US20090180185A1 (en) | Minute Structure and its Manufacturing Method | |
JP3160406U (ja) | 方形積層ガラスレンズモジュール(Rectangularstackedglasslensmodule) | |
EP2650705B1 (en) | Lens plate for wafer-level camera and method of manufacturing same | |
EP2369391B1 (en) | Wafer lens unit and method for manufacturing the same | |
WO2012043191A1 (ja) | ガラスレンズ | |
US20100013113A1 (en) | Method for manufacturing lens groups | |
JP2009279790A (ja) | レンズ及びその製造方法、並びに、レンズアレイ、カメラモジュール及びその製造方法、電子機器 | |
US20100328743A1 (en) | Optical system | |
JP4888241B2 (ja) | マイクロレンズアレイ付き部品の製造方法 | |
US8202451B2 (en) | Method of making a lens assembly array | |
EP1474851B1 (en) | Method of manufacturing an optical device by means of a replication method | |
US8792190B2 (en) | Lens and method for manufacturing same | |
KR101204628B1 (ko) | 웨이퍼 렌즈 및 이의 제조방법 | |
JP2014006329A (ja) | ウエハレンズの製造方法及び撮像レンズ | |
JP2003262713A (ja) | 回折光学素子及び回折光学素子の製造方法 | |
US20100073782A1 (en) | Optical lens | |
US10175462B2 (en) | Wafer level lens system and method of fabricating the same | |
KR100985568B1 (ko) | 스탬프를 이용한 렌즈 제조 방법 | |
US20220168978A1 (en) | Wafer alignment features | |
CN217169571U (zh) | 晶圆级压印光学模组 |
Legal Events
Date | Code | Title | Description |
---|---|---|---|
121 | Ep: the epo has been informed by wipo that ep was designated in this application |
Ref document number: 11771857 Country of ref document: EP Kind code of ref document: A1 |
|
WWE | Wipo information: entry into national phase |
Ref document number: 2012511601 Country of ref document: JP |
|
NENP | Non-entry into the national phase |
Ref country code: DE |
|
WWE | Wipo information: entry into national phase |
Ref document number: 13642686 Country of ref document: US |
|
122 | Ep: pct application non-entry in european phase |
Ref document number: 11771857 Country of ref document: EP Kind code of ref document: A1 |