WO2005092588A1 - 微細凹凸構造を有する曲面金型の製造方法及びこの金型を用いた光学素子の製造方法 - Google Patents
微細凹凸構造を有する曲面金型の製造方法及びこの金型を用いた光学素子の製造方法 Download PDFInfo
- Publication number
- WO2005092588A1 WO2005092588A1 PCT/JP2005/005012 JP2005005012W WO2005092588A1 WO 2005092588 A1 WO2005092588 A1 WO 2005092588A1 JP 2005005012 W JP2005005012 W JP 2005005012W WO 2005092588 A1 WO2005092588 A1 WO 2005092588A1
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- WIPO (PCT)
- Prior art keywords
- mold
- silicon
- film
- pattern
- curved
- Prior art date
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Classifications
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B22—CASTING; POWDER METALLURGY
- B22D—CASTING OF METALS; CASTING OF OTHER SUBSTANCES BY THE SAME PROCESSES OR DEVICES
- B22D17/00—Pressure die casting or injection die casting, i.e. casting in which the metal is forced into a mould under high pressure
- B22D17/20—Accessories: Details
- B22D17/22—Dies; Die plates; Die supports; Cooling equipment for dies; Accessories for loosening and ejecting castings from dies
- B22D17/2245—Dies; Die plates; Die supports; Cooling equipment for dies; Accessories for loosening and ejecting castings from dies having walls provided with means for marking or patterning
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B22—CASTING; POWDER METALLURGY
- B22C—FOUNDRY MOULDING
- B22C9/00—Moulds or cores; Moulding processes
- B22C9/06—Permanent moulds for shaped castings
- B22C9/061—Materials which make up the mould
-
- 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
- B29C45/00—Injection moulding, i.e. forcing the required volume of moulding material through a nozzle into a closed mould; Apparatus therefor
- B29C45/17—Component parts, details or accessories; Auxiliary operations
- B29C45/26—Moulds
- B29C45/263—Moulds with mould wall parts provided with fine grooves or impressions, e.g. for record discs
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- 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
- B29C33/00—Moulds or cores; Details thereof or accessories therefor
- B29C33/38—Moulds or cores; Details thereof or accessories therefor characterised by the material or the manufacturing process
- B29C33/3842—Manufacturing moulds, e.g. shaping the mould surface by machining
- B29C33/3857—Manufacturing moulds, e.g. shaping the mould surface by machining by making impressions of one or more parts of models, e.g. shaped articles and including possible subsequent assembly of the parts
- B29C33/3878—Manufacturing moulds, e.g. shaping the mould surface by machining by making impressions of one or more parts of models, e.g. shaped articles and including possible subsequent assembly of the parts used as masters for making successive impressions
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- 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
Definitions
- the present invention relates to a method of manufacturing a curved mold having a fine uneven structure such as an anti-reflection structure, and a method of manufacturing a curved mold having a fine uneven structure using a member that can be easily processed with a curved surface, and this mold.
- the present invention relates to a method for manufacturing an optical element using a mold.
- a surface treatment for preventing reflection is performed on a light incident surface of a substrate.
- a surface treatment there is a method of forming a multilayer film in which a thin dielectric film is superimposed on the surface of a light-transmitting substrate by vacuum deposition or the like, or a method of providing fine and dense irregularities on the surface of an optical element.
- a mold for molding an optical element having an antireflection structure having fine and dense irregularities is formed by using quartz or silicon as a base material, and a predetermined antireflection structure is formed on the base material.
- the substrate is formed by applying a plating to the substrate.
- Patent document 1 JP-A-62-96902
- the present invention has been made to solve the above-mentioned conventional problems, and is a mold capable of providing a fine and dense uneven shape to a lens having a complicated surface shape such as an aspherical lens. It is an object of the present invention to provide a method capable of easily manufacturing the same.
- Another object of the present invention is to provide a method for easily manufacturing an optical element such as a lens having a complicated surface shape such as an aspherical lens provided with fine and dense irregularities on the surface. I do.
- a silicon-based film is formed on a curved base material formed into a predetermined shape, and the silicon-based film is formed into a fine shape by using a mask.
- a pattern with a fine concavo-convex structure is formed by etching, and a metal for mold is deposited on the silicon-based film on which the pattern with this fine concavo-convex structure has been formed.
- the silicon-based film is removed, and a mold having a fine uneven structure on a curved surface is formed.
- the pattern of the fine uneven structure is an antireflection pattern.
- the mask may be made of a photoresist, and an antireflection film may be formed between the curved base material and the silicon-based film.
- a release material film may be formed between the curved base material and the silicon-based film.
- the silicon-based film can be composed of a silicon dioxide film formed by a sputtering method.
- a silicon-based film is formed on a curved base material formed in a predetermined shape, and an effective area portion on the silicon-based film has a predetermined shape.
- a mask with a volume ratio of the concavo-convex pattern that changes toward the outside is provided, and the silicon-based film is gradually moved from the outer periphery to the inner periphery by using this mask.
- the depth of the fine irregularities is increased, and a fine pattern with irregularities of a predetermined depth and shape is formed by etching in the effective area, and the metal for mold is formed on the substrate on which the irregularities are formed.
- a silicon-based film is formed on a curved base material formed in a predetermined shape, and a fine uneven structure having a predetermined shape is formed on the silicon-based film using a mask. Is formed by etching, and a metal for mold is applied on the silicon-based film on which the pattern of the fine uneven structure is formed, and the pattern of the fine uneven structure is transferred to the metal for the mold.
- a mold having a fine uneven structure on a curved surface is formed, and this mold is attached to at least one of a fixed mold and a movable mold, and the fixed mold and the movable mold are used.
- an optical element having a fine uneven structure on at least one surface is manufactured by injection molding.
- a curved base material having a predetermined curved surface shape even with a complicated shape such as a spherical surface and an axisymmetric aspheric surface.
- a curved surface mold having a predetermined curved surface even with a complicated shape such as a spherical surface or an asymmetrical symmetrical surface, and having a fine and dense uneven structure.
- the pattern patterning of the resist can be performed more densely, so that a curved mold having an antireflection structure composed of finer and denser irregularities can be formed.
- the mold side and the base material side can be easily separated.
- a curved surface mold having an antireflection structure in which conical irregularities are formed at a predetermined pitch in an effective area is used in the effective region in which the depth of the antireflection function gradually increases from the outer periphery toward the inner periphery.
- FIG. 1 is a cross-sectional view showing a process of manufacturing a curved mold having an anti-reflection structure according to a first embodiment of the present invention for each process.
- FIG. 2 is a cross-sectional view illustrating a process of manufacturing a curved mold having an anti-reflection structure according to a second embodiment of the present invention for each process.
- FIG. 3 is a cross-sectional view showing a process of manufacturing a curved mold having an anti-reflection structure according to a third embodiment of the present invention for each process.
- FIG. 4 is a cross-sectional view showing a process of manufacturing a curved mold having an anti-reflection structure according to a fourth embodiment of the present invention for each process.
- FIG. 5 is a plan view showing an exposure step for gradually increasing the depth of the antireflection function of the optical element from the outer circumference to the inner circumference of the optical element.
- FIG. 6 is a view showing the relationship between the adhesive force between a mold and a molded product in each region of the optical element manufactured by the present invention.
- FIG. 7 is a side sectional view showing the shape and structure of a mold used in the method for manufacturing an optical element according to the present invention.
- FIG. 1 is a cross-sectional view showing a process of manufacturing a curved mold having an antireflection structure composed of dense and fine irregularities, which is applied to a first embodiment of the present invention.
- a curved base material 1 having a predetermined curved surface shape such as a spherical surface and an aspheric surface symmetrical, such as an objective lens for an optical pickup and a collimator lens is prepared.
- a metal base material that can be easily processed with a curved surface, a resin base material formed from the metal mold, or a glass base material is used.
- an ultra-precision micro-machining machine that rotates a diamond tool on an aluminum alloy or carbon-free copper with good machinability is mirror-finished to a predetermined curved surface such as a spherical surface and an aspherical surface. Have been.
- a silicon dioxide film (SiO 2) was formed as a silicon-based film on the surface of the curved base material 1 on which a predetermined curved surface was formed, by a slitter method.
- Membrane 2 from 500 nm to 1 ⁇ m
- a film is formed to a degree.
- an RF magnetron using an SiO target is used.
- a 900 nm-thick silicon dioxide (SiO 2) film 2 was formed with a knotter. Film formation at this time The conditions are as follows: using a SiO target, the substrate temperature is 200 ° C, and the argon (Ar) gas flow rate is 20s.
- a resist film 3 having a thickness of 600 nm was formed by spin-coating at 4000 rpm using a trade name “TDUR-P009” manufactured by Tokyo Ohka Kogyo Co., Ltd.
- the applied resist film 3 is exposed and developed to form a resist pattern 30.
- development was carried out under the trade name “NMD-W” manufactured by Tokyo Ohka Kogyo Co., Ltd. to form a resist pattern 30 having a large number of conical protrusions formed at a pitch of 250 nm.
- the silicon dioxide (SiO 2) film 2 is patterned by reactive ion etching (RIE) using the resist pattern 30 as a mask.
- RIE reactive ion etching
- a product name “NL D-800” manufactured by ULVAC, Inc. was used as the RIE etching apparatus.
- a mixed gas of CF and CHF is used as the etching gas.
- a conical groove 21 having a depth of 500 nm was formed with a thickness of 12 nmZsec.
- a metal layer 4 to be a mold (a stamper) is formed on the antireflection structure 2a made of a silicon dioxide film (SiO).
- Metal layer 4 consists of a nickel (Ni) seed
- a nickel layer is formed thereon by electric field plating, and the back surface is polished to form a metal layer 4 serving as a mold (stamper) having a predetermined thickness.
- the pitch of 250 nm according to this embodiment is obtained.
- a curved mold 4a having an anti-reflection structure in which conical fine and dense irregularities are formed can be obtained.
- the curved base material 1 having a predetermined curved surface shape can be easily formed by an ultraprecision micromachining machine. Then, by performing the steps (b) to (h) on the curved surface of the curved preform 1, even a complicated shape such as a spherical surface or an aspherical surface having an axis has a predetermined curved surface. And, the curved mold 4a having an antireflection structure having a fine and dense uneven shape can be formed.
- FIG. 2 is a cross-sectional view showing a process of manufacturing a curved mold having an anti-reflection structure according to a second embodiment of the present invention.
- the same parts as those in the first embodiment are denoted by the same reference numerals, and a detailed description thereof will be omitted to avoid duplication.
- an antireflection material 11 is provided on the surface of the curved base material 1 on which a predetermined curved surface is formed.
- the anti-reflection material 11 100 nm of chromium (Cr) and 100 nm of chromium oxide (CrO) are formed thereon by sputtering.
- the antireflection material 11 other than the above, Al O, CeO, LaF, MgF, TiO,
- Materials such as TiN, ZnS, and ZrO can be used.
- a silicon dioxide film (SiO 2) film 2 was formed on the anti-reflection material 11 formed on the curved base material 1 from 500 nm by a notter method. Deposit a film of about ⁇ m This
- a 900 nm thick silicon dioxide film (SiO 2) film 2 was formed. This embodiment, a 900 nm thick silicon dioxide film (SiO 2) film 2 was formed. This embodiment, a 900 nm thick silicon dioxide film (SiO 2) film 2 was formed. This embodiment, a 900 nm thick silicon dioxide film (SiO 2) film 2 was formed. This embodiment, a 900 nm thick silicon dioxide film (SiO 2) film 2 was formed. This
- the silicon dioxide film (SiO 2) film 2 was formed under the same conditions as in the first embodiment.
- a 600 nm-thick resist is formed on the silicon dioxide film (SiO 2) film 2.
- the strike film 3 is formed.
- the same resist film 3 as in the first embodiment was used.
- the applied resist film 3 is exposed and developed in the same manner as in the first embodiment to form a large number of conical protrusions at a pitch of 250 nm.
- the formed resist pattern 30 was formed.
- the reactive ion etching (RIE) is used to perform a silicon dioxide film etching (RIE) in the same manner as in the first embodiment.
- a metal layer 4 to be a mold is formed on the antireflection structure 2a made of a silicon dioxide film (SiO).
- the antireflection material 11 allows the resist to be patterned more densely, and thus has a finer and denser uneven shape.
- a curved mold 4a having an anti-reflection structure can be formed.
- FIG. 3 is a cross-sectional view showing a process of manufacturing a curved mold having an anti-reflection structure according to a third embodiment of the present invention.
- the same parts as those in the first and second embodiments are denoted by the same reference numerals, and a detailed description thereof will be omitted to avoid duplication.
- a curved preform 1 having a predetermined curved surface shape such as a spherical surface or an aspherical surface such as an objective lens for an optical pickup or a collimator lens is used.
- a release material 12 having an anti-reflection function is provided on the surface of the curved base material 1 on which a predetermined curved surface is formed.
- the mold release material 12 a material obtained by applying a resist having an antireflection function corresponding to ultraviolet rays and performing hard beta is used.
- a resist trade name “SWK-248DTr” manufactured by Tokyo Ohka Kogyo Co., Ltd. was used, and hard beta was performed at 180 ° C.
- a silicon dioxide film (SiO 2) film 2 is formed from 500 nm: about m. This practice
- the silicon oxide film (SiO 2) film 2 was formed under the same conditions as in the first embodiment.
- a 600 nm thick resist is formed on the silicon dioxide film (SiO 2) film 2.
- the strike film 3 is formed.
- the same resist film 3 as in the first embodiment was used.
- the applied resist film 3 is exposed and developed in the same manner as in the first embodiment to form a large number of conical protrusions at a pitch of 250 nm.
- the formed resist pattern 30 was formed.
- RIE reactive ion etching
- a metal layer 4 to be a mold is formed on the antireflection structure 2a made of a silicon dioxide film (SiO).
- the mold (stamper) 4a is mechanically peeled off integrally with the silicon dioxide film (SiO 2).
- the resist for the release material adhering to the mold (stamper) side is removed by oxygen plasma, and dioxygen is removed by reactive ion etching (RIE). Only the silicon film (SiO 2) 2a is removed. At this time, CHF was used as an etching gas. In this way,
- a curved mold 4a having an antireflection structure in which conical irregularities are formed at a pitch of 250 nm is obtained.
- the die (stamper) side and the base material 1 side can be easily separated.
- the fourth embodiment is to reduce the load at the time of peeling. For this reason, the resin is filled with resin by gradually increasing the depth of the unevenness of the anti-reflection function of the optical element from the outer circumference to the inner circumference of the optical element so as to gradually increase the load at the time of peeling. It is easy to peel off from the outer peripheral side when doing.
- the fourth embodiment will be described with reference to FIGS.
- FIG. 4 is a cross-sectional view showing a process of manufacturing a curved mold having an anti-reflection structure according to a fourth embodiment of the present invention
- FIG. 5 is a drawing showing a force from the outer periphery to the inner periphery of the optical element.
- FIG. 4 is a plan view showing an exposure step for gradually increasing the depth of unevenness of the antireflection function of the optical element.
- a curved base material 1 having a predetermined curved shape such as a spherical surface or an aspherical surface such as an objective lens for an optical pickup or a collimator lens is prepared.
- a 900 nm-thick silicon dioxide (SiO 2) film having a thickness of 900 nm was formed on the surface of the curved base material 1 on which the predetermined curved surface was formed by RF magnetron sputtering. 2 was deposited.
- This silicon dioxide film (SiO 2) film 2 was formed under the same conditions as in the first embodiment.
- This resist coating is performed, for example, using a negative resist for an electron beam having a trade name of "NEB22" manufactured by Sumitomo Chemical Co., Ltd., and spin-coating at 3000 rpm to form a resist film 3a having a thickness of 600 nm. Formed.
- the applied resist film 3a is irradiated using an EB lithography apparatus.
- the irradiation energy was increased toward the outer periphery.
- a force effective area 30a for irradiating and drawing at a 100 m square is irradiated with an energy of 10 / z C / cm 2, and an area 30b 1 outside the area is 12 / z Irradiation was performed at an energy of CZcm 2 , and the outer region 30b2 was irradiated at an energy of 14 CZcm 2 , and the outermost region 30b3 was irradiated at an energy of 16 C / cm 2 .
- the resist pattern 31 is a mask in which the volume ratio of the concavo-convex pattern changes as the effective area force moves outward.
- the silicon dioxide film (SiO 2) film 2 is patterned by reactive ion etching (RIE) using the resist pattern 31 as a mask.
- RIE reactive ion etching
- the RIE etching equipment used was a product name “NL D-800” manufactured by ULVAC, Inc., and a mixed gas of CF and CHF was used as the etching gas.
- Etching was performed so that a groove 21 having a processing depth of 500 nm was formed in the effective region.
- a pattern was formed in which the depth of the groove of the antireflection function gradually increased from the outer periphery toward the inner periphery.
- a metal layer 4 to be a mold is formed on an antireflection structure 2b made of a silicon dioxide film (SiO).
- Metal layer 4 consists of a nickel (Ni) seed layer
- a nickel layer is formed thereon by electric field plating, and the back surface is polished to form a metal layer 4 to be a mold (stamper) having a predetermined thickness.
- the boundary force between the silicon dioxide film (SiO 2) and the metal layer 4 is also important.
- the area located outside the effective area 30a gradually becomes deeper in the groove of the antireflection function from the outer periphery toward the inner periphery.
- a curved mold 4b having an antireflection structure in which conical irregularities are formed at a pitch of 250 nm is obtained.
- the depth of the antireflection function gradually increases from the outer periphery toward the inner periphery, and the effective region 30a has a conical shape at a predetermined pitch. Depression
- the curved surface mold 4b having the anti-reflection structure in which the protrusion is formed the outer peripheral side force is easily peeled off when the resin is filled, and the stamper and the molded product are not likely to be damaged.
- a molded product is prepared using a mold shown in Fig. 1 on which an antireflection structure having the same depth is formed. Also, a molded product is created using the mold shown in FIG. The adhesive force when using the mold of FIG. 1 and the adhesive force when using the mold of FIG. 4 are compared. As a result, as shown in FIG. 6, according to the present invention, the adhesive force in the attraction region l ib on the outer peripheral partial force outer periphery is reduced. As a result, according to the fourth embodiment of the present invention, when the resin is filled, the outer peripheral side force is easily peeled off, and there is no possibility that the stamper or the molded product is damaged.
- a silicon dioxide film (SiO 2) film is used as the silicon-based film.
- a silicon (Si) film, a silicon (SiN) nitride film, or the like can also be used.
- an SOG film formed by spin coating using an organic silane or the like is used as a silicon-based film.
- FIG. 7 is a side sectional view showing the shape and structure of a molding die used in the method of manufacturing an optical element according to the present invention.
- This mold has a fixed mold 60 and a movable mold 70.
- the movable mold 70 is abutted against the fixed mold 60, a cavity 80 is formed between the two molds 60, 70, and a gate 81 connected to the cavity 80 is formed in a part of the periphery.
- the molten plastic resin is supplied to the cavity 80 through the gate 81, and the resin is filled inside.
- the fixed die 60 includes a first member 61 at the center and a second member 62 on the peripheral side.
- the two members 61 and 62 are formed of a steel material and are integrally fixed to each other.
- the first member 61 has a smooth concave molding surface 61a opposed to the movable mold 70, and the second member 61 has a molding surface 6 lb of an annular groove disposed around the molding surface 61a. Is formed.
- the molding surface 61a of the first member 61 corresponds to one lens surface of a molded lens (not shown), and the molding surface 62a of the second member 62 corresponds to a flange provided around the lens. .
- the movable mold 70 includes a protruding portion 71 that is a mold member on the center side, and the protruding portion 71 is formed around the protruding portion 71. And a main body 72 supporting the main body.
- the die (stamper) 4a manufactured by the method according to any one of the first to fourth embodiments of the present invention is attached to the tip of the protruding portion 71.
- the mold 4a is formed in a concave surface corresponding to the other lens surface of the lens, and on the concave surface is formed an antireflection structure 40a having a fine and dense surface roughness.
- the peripheral molding surface 72a formed by the main body 72 corresponds to the peripheral flange.
- the protruding portion 71 is slidably mounted in the axis (X) direction while being fitted into a hole 72b provided in the main body 72. After the molds are opened to separate the molds 60 and 70, the protrusion 71 is moved toward the fixed mold 60 with respect to the main body 72, thereby releasing the lens remaining on the movable mold 70.
- mold closing is performed by joining the movable mold 70 to the fixed mold 60.
- the fixed mold 60 and the movable mold 70 are fixed in a state where they are aligned with each other using an alignment mechanism such as a fitting pin (not shown).
- an alignment mechanism such as a fitting pin (not shown).
- the molten plastic resin is injected into the cavity 80 formed between the two molds 60, 70.
- the molten plastic resin is introduced into the cavity 80 between the two molds 60 and 70 via the gate 81, and the cavity 80 is filled with the molten plastic resin.
- the molten plastic resin filled in the cavity 80 is radiated and cooled.
- Temperature of injected molten plastic ⁇ during wire carrier Activity 80 typically 200- a 300 ° C
- the molding surface 40a of the normal 100 one 180 o C
- molten plastic resin cools and hardens.
- the molten plastic resin penetrates almost completely into the fine concavo-convex pattern formed on the molding surface 4 Oa of the protrusion 71.
- a lens corresponding to the shape of the cavity 80 is obtained.
- One surface of this lens is a smooth convex surface corresponding to the molding surface 6la, and the other surface of the lens is a convex surface having an antireflection structure corresponding to the molding surface 40a. Also around the lens Has flanges corresponding to the molding surfaces 61b and 72a.
- the mold is opened to separate the movable mold 70 from the fixed mold 60.
- the molded product remains on the movable mold 70 side and is released from the fixed mold 60.
- the protruding portion 71 is driven from the state of being housed in the main body 72 to the fixed die 60 side.
- the lens can be completely released from the movable mold 71, that is, separated.
- the lens thus obtained can be applied to an optical pickup device and the like. Note that
- the mold having the fine uneven pattern is attached to the movable mold 70.
- the mold is attached to the fixed mold 60, or is attached to both the movable mold 70 and the fixed mold 60.
- the mold according to the present invention may be appropriately used for the movable mold 70 and the fixed mold 60 according to the design of the optical element to be manufactured.
- the anti-reflection structure is described as an example of the fine and dense uneven shape.
- the present invention can be applied to the case of manufacturing the structure of the optical element pattern.
- the present invention can be applied to the case where a fine pattern forming a phase difference plate or a fine pattern forming a diffraction grating is manufactured.
- the present invention can be applied to a method of manufacturing a diffraction grating for an optical pickup, a retardation plate for an optical pickup, a lens for an optical pickup, a display cover for a mobile phone, and the like.
- An antireflection structure is provided on the surface of these members. Available in case.
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- Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- Chemical & Material Sciences (AREA)
- Materials Engineering (AREA)
- Manufacturing & Machinery (AREA)
- Moulds For Moulding Plastics Or The Like (AREA)
- Surface Treatment Of Optical Elements (AREA)
Abstract
Description
Claims
Priority Applications (2)
Application Number | Priority Date | Filing Date | Title |
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JP2006511450A JP4404898B2 (ja) | 2004-03-25 | 2005-03-18 | 微細凹凸構造を有する曲面金型の製造方法及びこの金型を用いた光学素子の製造方法 |
US10/594,154 US20070144700A1 (en) | 2004-03-25 | 2005-03-18 | Production method of curved-surface metal mold having fine uneven structure and production method of optical element using this metal mold |
Applications Claiming Priority (2)
Application Number | Priority Date | Filing Date | Title |
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JP2004089859 | 2004-03-25 | ||
JP2004-089859 | 2004-03-25 |
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WO2005092588A1 true WO2005092588A1 (ja) | 2005-10-06 |
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PCT/JP2005/005012 WO2005092588A1 (ja) | 2004-03-25 | 2005-03-18 | 微細凹凸構造を有する曲面金型の製造方法及びこの金型を用いた光学素子の製造方法 |
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US (1) | US20070144700A1 (ja) |
JP (1) | JP4404898B2 (ja) |
CN (1) | CN1956829A (ja) |
WO (1) | WO2005092588A1 (ja) |
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CN113106403B (zh) * | 2020-01-09 | 2023-02-28 | 昆山微电子技术研究院 | 一种光学器件内曲面的镀膜方法 |
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JP2009162965A (ja) * | 2008-01-04 | 2009-07-23 | Toshiba Corp | 反射防止構造の形成方法および反射防止構造 |
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US9268067B2 (en) | 2011-02-22 | 2016-02-23 | Panasonic Intellectual Property Management Co., Ltd. | Optical component having antireflection structure |
WO2013118488A1 (ja) * | 2012-02-06 | 2013-08-15 | パナソニック株式会社 | 光学素子、それを備えた撮像装置及び光学素子の製造方法 |
JP5315484B1 (ja) * | 2012-02-06 | 2013-10-16 | パナソニック株式会社 | 光学素子、それを備えた撮像装置及び光学素子の製造方法 |
US9310528B2 (en) | 2012-02-06 | 2016-04-12 | Panasonic Intellectual Property Management Co., Ltd. | Optical element, imaging apparatus including the same, and method for fabricating the same |
Also Published As
Publication number | Publication date |
---|---|
US20070144700A1 (en) | 2007-06-28 |
JP4404898B2 (ja) | 2010-01-27 |
CN1956829A (zh) | 2007-05-02 |
JPWO2005092588A1 (ja) | 2008-02-07 |
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