WO2015088032A1 - レンズ部材、レンズ部材の製造方法、通信モジュール、レンズアレイおよび光源モジュール - Google Patents
レンズ部材、レンズ部材の製造方法、通信モジュール、レンズアレイおよび光源モジュール Download PDFInfo
- Publication number
- WO2015088032A1 WO2015088032A1 PCT/JP2014/083061 JP2014083061W WO2015088032A1 WO 2015088032 A1 WO2015088032 A1 WO 2015088032A1 JP 2014083061 W JP2014083061 W JP 2014083061W WO 2015088032 A1 WO2015088032 A1 WO 2015088032A1
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- WIPO (PCT)
- Prior art keywords
- lens
- glass
- glass lens
- mounting
- molded body
- Prior art date
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Classifications
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- G—PHYSICS
- G02—OPTICS
- G02B—OPTICAL ELEMENTS, SYSTEMS OR APPARATUS
- G02B6/00—Light guides; Structural details of arrangements comprising light guides and other optical elements, e.g. couplings
- G02B6/24—Coupling light guides
- G02B6/42—Coupling light guides with opto-electronic elements
- G02B6/4201—Packages, e.g. shape, construction, internal or external details
- G02B6/4219—Mechanical fixtures for holding or positioning the elements relative to each other in the couplings; Alignment methods for the elements, e.g. measuring or observing methods especially used therefor
- G02B6/4236—Fixing or mounting methods of the aligned elements
- G02B6/4244—Mounting of the optical elements
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- 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
- G02B3/0056—Arrays characterized by the distribution or form of lenses arranged along two different directions in a plane, e.g. honeycomb arrangement of lenses
-
- G—PHYSICS
- G02—OPTICS
- G02B—OPTICAL ELEMENTS, SYSTEMS OR APPARATUS
- G02B6/00—Light guides; Structural details of arrangements comprising light guides and other optical elements, e.g. couplings
- G02B6/24—Coupling light guides
- G02B6/42—Coupling light guides with opto-electronic elements
- G02B6/4201—Packages, e.g. shape, construction, internal or external details
- G02B6/4249—Packages, e.g. shape, construction, internal or external details comprising arrays of active devices and fibres
- G02B6/425—Optical features
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- G—PHYSICS
- G02—OPTICS
- G02B—OPTICAL ELEMENTS, SYSTEMS OR APPARATUS
- G02B7/00—Mountings, adjusting means, or light-tight connections, for optical elements
- G02B7/02—Mountings, adjusting means, or light-tight connections, for optical elements for lenses
- G02B7/021—Mountings, adjusting means, or light-tight connections, for optical elements for lenses for more than one lens
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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
- B29C45/00—Injection moulding, i.e. forcing the required volume of moulding material through a nozzle into a closed mould; Apparatus therefor
- B29C45/14—Injection moulding, i.e. forcing the required volume of moulding material through a nozzle into a closed mould; Apparatus therefor incorporating preformed parts or layers, e.g. injection moulding around inserts or for coating articles
- B29C45/14065—Positioning or centering articles in the mould
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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
- B29C45/00—Injection moulding, i.e. forcing the required volume of moulding material through a nozzle into a closed mould; Apparatus therefor
- B29C45/14—Injection moulding, i.e. forcing the required volume of moulding material through a nozzle into a closed mould; Apparatus therefor incorporating preformed parts or layers, e.g. injection moulding around inserts or for coating articles
- B29C45/14336—Coating a portion of the article, e.g. the edge of the article
- B29C45/14434—Coating brittle material, e.g. glass
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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
- 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
- B29C45/33—Moulds having transversely, e.g. radially, movable mould parts
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
- B29K—INDEXING SCHEME ASSOCIATED WITH SUBCLASSES B29B, B29C OR B29D, RELATING TO MOULDING MATERIALS OR TO MATERIALS FOR MOULDS, REINFORCEMENTS, FILLERS OR PREFORMED PARTS, e.g. INSERTS
- B29K2709/00—Use of inorganic materials not provided for in groups B29K2703/00 - B29K2707/00, for preformed parts, e.g. for inserts
- B29K2709/08—Glass
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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
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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
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- C—CHEMISTRY; METALLURGY
- C03—GLASS; MINERAL OR SLAG WOOL
- C03C—CHEMICAL COMPOSITION OF GLASSES, GLAZES OR VITREOUS ENAMELS; SURFACE TREATMENT OF GLASS; SURFACE TREATMENT OF FIBRES OR FILAMENTS MADE FROM GLASS, MINERALS OR SLAGS; JOINING GLASS TO GLASS OR OTHER MATERIALS
- C03C27/00—Joining pieces of glass to pieces of other inorganic material; Joining glass to glass other than by fusing
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- 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
- G02B6/00—Light guides; Structural details of arrangements comprising light guides and other optical elements, e.g. couplings
- G02B6/24—Coupling light guides
- G02B6/26—Optical coupling means
- G02B6/32—Optical coupling means having lens focusing means positioned between opposed fibre ends
Definitions
- the present invention relates to a lens member, a lens member manufacturing method, a communication module, a lens array, and a light source module.
- a lens for optical communication is surface-mounted on a substrate (for example, a silicon bench) on which a laser diode and an end of an optical fiber are mounted, and collects light output from the laser-diode into the optical fiber. Things that shine are known.
- a glass lens is generally used instead of a resin lens (see, for example, Patent Document 1).
- a square lens having a square outer peripheral shape of a glass lens is used.
- a flat surface reference surface
- the lens can be stably placed on the mounting surface of the substrate by placing the lens so that the outer peripheral surface of the lens is in contact with the mounting surface (plane on the substrate) on which the lens of the substrate is mounted. .
- the distance from the substrate to the optical axis can be determined simply by bringing the reference plane into contact with the mounting surface. become. Therefore, the square lens can be easily bonded and fixed to the mounting surface of the substrate using, for example, an ultraviolet curable resin.
- a reference surface is provided by post-processing such as dicing and polishing on an aspheric glass lens other than the above-described square lens.
- a method of sealing the ball lens with a low-melting glass to a lens barrel provided by cutting stainless steel or a nickel alloy press processed can be known.
- the ball lens is mounted on the substrate through the lens barrel and the can.
- some glass materials for glass ball lenses have a high melting point, and depending on the glass material, it is difficult to form a glass lens only by molding, and a glass lens that requires polishing is required. There are also many. In the case of a glass ball lens that requires this polishing, it is difficult to provide a reference surface at the time of molding like the above-mentioned square lens because there is a reference surface for polishing to a spherical shape, Since the glass lens manufactured by polishing is provided with a reference surface by post-processing such as dicing or polishing described above, it is difficult to reduce costs. At present, there is no product on the market that is intended to be mounted on the surface of a glass ball lens, which is an optical component, as a glass ball lens. There are products with an AR coating film formed.
- the AR coating when the AR coating is applied to the surface of the ball lens as described above, the surface on which the light is actually incident and the surface on which the light is emitted are not determined until they are mounted on the substrate. It is necessary to apply AR coating to the entire surface. In this case, since the ball lens is mounted on the substrate, when the ball lens is handled, it cannot be handled while avoiding the AR coating applied to the entire surface. For example, the AR coating may be damaged. In this case, if a scratch on the AR coating is disposed on a portion of the ball lens used for light incidence or emission, there is a risk that the yield may be reduced or the optical characteristics may be deteriorated.
- the surface on which the AR coating is required is clear, and the AR coating may be applied before the glass lens is surface-mounted. It is possible to handle the lens avoiding that part. That is, it is not practical to use the ball lens alone without sealing the lens barrel or can from the viewpoints of handling at the time of mounting, handling of automatic mounting, handling at the time of bonding to the substrate, and the like.
- the present invention has been made in view of the above circumstances, and a lens member in which a mounting portion (molded body) for attaching the glass lens is added to a ready-made glass lens, a manufacturing method of the lens member, a communication module, and a lens
- An object is to provide an array and a light source module.
- the lens member of the present invention is made of a glass lens that has already been formed, and the glass lens is made of a material different from the glass lens, and can flow into a mold in which the glass lens is disposed.
- a mounting portion provided by inflowing and solidifying the material in a state, and the mounting portion is provided with a reference surface that comes into contact with the mounting surface when the glass lens is surface-mounted.
- the glass lens is, for example, a spherical lens or an aspheric lens
- the glass lens is basically manufactured as a glass lens by molding or polishing (including true sphere processing), and is subjected to dicing, polishing, or the like. Without post-processing, a lens designed and manufactured so as not to cost as much as possible can be used as a single glass lens.
- the mounting portion for example, a state where the glass lens is fixed in a mold (mold) and manufactured by injection molding a resin, or a state where the glass lens is fixed in a mold Then, it is conceivable that a fluid material before or after solification is made to flow into a mold and manufactured as glass or ceramic by a sol-gel method.
- the mounting portion is made of a material different from that of the glass lens.
- the mounting portion is provided so as to cover the glass lens to the extent that it does not come off the glass lens in a state where the light incident and exit portions are exposed when the lens member is used.
- the glass lens is provided in a columnar shape that is short in the axial direction with a part of the glass lens included therein, and a planar reference surface is provided on the outer peripheral surface of the substantially columnar mounting portion.
- the material is made into a gel after being made into a sol.
- the material may be gelled and the gel may be dried by heating at a relatively low temperature (for example, 100 degrees or less).
- a mounting part having a reference surface can be provided integrally with the glass lens at low cost by glass or ceramic manufactured by a sol-gel method.
- the glass lens is preferably circular when viewed from the optical axis direction.
- the glass lens disposed in the cavity of the mold is pressed and molded in the cavity.
- the molding accuracy can be improved.
- a spherical glass lens (ball lens) described later or an aspheric lens can be used as the glass lens.
- the spherical lens has a circular shape (outer shape) viewed from the optical axis direction regardless of where the optical axis is set.
- the outer shape of the aspherical lens is not necessarily circular when viewed from the optical axis direction, but is preferably circular.
- the glass lens is a glass ball lens made of a glass ball processed into a true sphere.
- the manufacturing cost of the glass ball lens can be reduced. That is, although it depends on the roundness, for example, when a glass ball lens is manufactured by a general sphere processing for creating a ball or the like of a bearing, the cost of the glass ball lens can be reduced. . That is, even if the spherical processing is basically polishing processing, many glass balls can be processed at a time, and the manufacturing cost of the lens member can be reduced compared to the case where a molded aspheric lens or the like is used as a glass lens. Can be reduced.
- the mounting portion is formed in a polygonal column shape including a part of the glass lens, and at least of three or more planes constituting an outer peripheral surface of a polygonal cross section of the mounting portion. It is preferable that a hole extending from the plane to the surface of the glass lens is formed in a portion where the thickness of the mounting portion is reduced by bringing the one plane and the surface of the glass lens close to each other.
- the mounting portion is a square tube-shaped member having a square cross section
- the length of each side of the square of the cross section is brought close to the diameter of the glass lens
- the surface of the glass lens is close to each of the four outer peripheral surfaces of the outer periphery, and a portion with a reduced thickness is generated in the mounting portion. If the thickness of this part becomes too thin, the strength decreases, and the part where the thickness becomes thin may be broken, for example, to be broken and peeled off from the glass lens.
- the mounting portion can be prevented from being broken at the portion where the thickness is reduced by providing a configuration in which there is no portion where the thickness is reduced.
- this hole is preferably provided when the mounting portion is created instead of post-processing.
- a convex portion reaching the surface of the glass lens is provided on the inner surface of the mold corresponding to the above-described plane, and the convex portion is formed. It is preferable that the hole is provided when the portion is removed.
- At least one of the outer peripheral planes of the mounting portion described above is a portion that is fixed to the mounting surface of the substrate by adhesion or the like as a reference surface, for example, when the lens member is surface-mounted on the substrate. If the reference surface has a thin and fragile portion, the portion may be broken when the portion is bonded to the substrate, and the lens member may be peeled off from the substrate. Therefore, by adopting a structure in which this portion does not start from the beginning, it is possible to suppress the lens member from falling off the substrate.
- an ultraviolet curable resin is used for bonding, the amount of the resin can be increased and the bonding can be strengthened by filling the hole with the ultraviolet effect resin. In this case, the ultraviolet curable resin filled in the holes is in contact with both the mounting surface of the substrate and the surface of the glass lens, thereby directly bonding the substrate and the glass lens. Thereby, adhesion can be made stronger.
- the surface of the glass ball lens from the reference surface to a portion where the thickness of the mounting portion becomes thin due to the proximity of the reference surface of the mounting portion and the surface of the glass lens. It is preferable that a hole leading to is formed.
- the mounting portion is broken at the reference surface fixed to the mounting surface of the substrate, and the lens member Can be prevented from falling off the substrate.
- the amount of adhesive used can be increased and adhesion can be strengthened, and the glass lens and substrate can be directly bonded by the adhesive in the hole. become.
- the adhesive is an ultraviolet curable resin, for example, a hole that reaches the glass lens is provided on the surface of the mounting portion that is opposed to the glass lens, and the hole in the reference surface is inserted through the glass lens. It is preferable that the ultraviolet curable resin is configured to be irradiated with ultraviolet rays.
- the shortest distance between the outer surface of the glass lens disposed in the mounting portion and the outer surface of the mounting portion is 0.1 mm or more.
- sufficient strength can be obtained by setting the thinnest portion of the mounting portion (the shortest distance between the outer surface of the glass lens and the mounting portion) to 0.1 mm or more.
- a portion having a thickness less than 0.1 mm may be eliminated by providing a hole in the portion where the thickness is reduced between the glass lens of the mounting portion as described above.
- the mounting portion is formed in a rectangular parallelepiped shape, and a pair of outer surfaces parallel to each other are arranged so as to be orthogonal to the optical axis of the glass lens, and in the optical axis direction of the glass lens
- the thickness along the optical axis direction is D
- the distance along the optical axis direction between the pair of outer surfaces orthogonal to the optical axis of the glass lens of the mounting portion is T
- the value of T is equal to or greater than the value of D. It is preferable.
- the glass lens can be substantially covered with the mounting portion, and for example, extra external light can be effectively suppressed by the mounting portion, which is effective as a countermeasure against stray light. It is.
- the light incident surface and the light exit surface of the glass lens are exposed by providing holes in the mounting portion as described above.
- the optical axis direction of the glass lens is determined in a state where the glass lens is held in the mounting portion.
- the direction orthogonal to the pair of outer surfaces is spherical. It becomes the optical axis direction of the glass lens.
- the mounting portion is formed in a rectangular parallelepiped shape, and a pair of outer surfaces parallel to each other are arranged so as to be orthogonal to the optical axis of the glass lens, and in the optical axis direction of the glass lens
- the thickness along the optical axis direction between the pair of the outer surfaces perpendicular to the optical axis of the glass lens of the mounting portion D is D, and T, 0.2D ⁇ T ⁇ 2.0D It is preferable that
- the distance T between the pair of outer surfaces orthogonal to the optical axis of the mounting portion is stable by setting the thickness D to 0.2 times or more of the thickness D along the optical axis direction of the glass lens.
- the lens member can be configured not to easily fall before being bonded to the substrate.
- the distance T less than twice the thickness D, a structure that can be easily handled can be obtained. If the mounting part is too long in the optical axis direction, for example, when the lens member is used in a communication module described later, the mounting part may be close to a semiconductor laser as a light emitting element or may be close to the end face of the optical communication cable. Therefore, workability may be deteriorated.
- a material made of a material different from the glass lens and having fluidity is placed in a mold in which the glass lens already prepared is arranged.
- a mounting portion having a reference surface that comes into contact with the mounting surface when the glass lens is surface-mounted is provided by inflowing and hardening.
- a lens member having the above-described effects can be manufactured.
- the lens member of the present invention includes a glass lens and a molded body (mounting portion) that is molded in a state in which at least a part of the glass lens is accommodated therein, and supports the glass lens, The entrance surface on which the light of the glass lens is incident and the exit surface from which the light of the glass lens exits are exposed from the molded body.
- the molded body that supports the glass lens is molded without processing the glass lens for installation of the glass lens.
- the glass lens can be easily installed at the installation position via the molded body.
- the lens member of the present invention includes a glass lens, and a molded body that is molded in a state in which at least a part of the glass lens is housed therein, and supports the glass lens,
- the molded body is provided with a mounting surface for attaching the molded body to another member, The entrance surface on which the light of the glass lens is incident and the exit surface from which the light of the glass lens exits are exposed from the molded body.
- the glass lens is supported by the molded body, the glass lens is supported and the glass lens is supported by another member without performing processing for installing the glass lens on the glass lens. It is possible to form a molded body having an attachment surface to be attached to the glass lens, and to easily attach the glass lens to another member via the molded body. Moreover, the dimension of a molded object can be made into the substantially same level as the diameter of a glass lens, and can contribute to size reduction of the apparatus in which a lens member is used.
- a part of the glass lens is inserted from the mounting surface of the molded body so as to be inserted into a recess or a through-hole provided on a mounting surface to which the molded body of the other member is mounted. It is preferable that it protrudes.
- the distance from the mounted surface of another member to the optical axis of the glass lens can be made shorter than the radius of the glass lens.
- the distance from the attachment surface to the optical axis of the glass lens is longer than the radius of the glass lens.
- the lens member of the present invention includes a glass lens and a molded body that is molded in a state in which at least a part of the glass lens is accommodated therein, and supports the glass lens,
- the molded body is provided with a mounting surface for attaching the molded body to another member, While the molded body is provided in a rectangular parallelepiped shape, the glass lens is provided in a spherical shape,
- the outer surface of the glass lens is arranged inside at least two of the six outer surfaces of the molded body that are parallel to each other.
- the spherical glass lens is supported by the rectangular parallelepiped shaped body.
- the outer surface of a glass lens is arrange
- the outer surfaces of the glass lens are arranged on the outer side, for example, on the two outer surfaces that are parallel to each other of the remaining outer surfaces except for the two outer surfaces on which the outer surface of the glass lens is arranged on the inner side. You may be made to do. That is, the glass lens may protrude from a pair of parallel outer surfaces.
- the two portions protruding from the glass lens molded body can be used as a light incident surface and a light output surface. In this case, the distance between the two outer surfaces from which the glass lens is exposed is shorter than the diameter of the glass lens, and the lens member can be further miniaturized.
- the lengths of the sides of the molded body having different directions are longer than the diameter of the glass lens
- the outer surface of the glass lens is disposed inside the six outer surfaces of the molded body, It is preferable that at least two portions of the outer surface of the glass lens are exposed from the molded body by providing holes reaching the outer surface of the glass lens on at least a pair of the outer surfaces parallel to each other of the molded body. .
- angular part of a molded object can ensure a certain amount of distance from the outer surface of a glass lens, and can raise the intensity
- the communication module of the present invention includes the above-described lens member, a light emitting element, and a substrate on which the lens member and the light emitting element are mounted, and transmits light from the light emitting element through the lens member. It is characterized by being incident on.
- the light of the light emitting element can be condensed on the end face of the optical communication cable using the lens member as described above, and can be incident on the optical communication cable. It can contribute to improvement of assembly and cost reduction.
- the light emitting element is, for example, a light emitting diode or a semiconductor laser.
- the optical communication cable uses, for example, an optical fiber.
- the lens array of the present invention is molded in a state where a plurality of spherical glass lenses and a plurality of the glass lenses are arranged in a predetermined arrangement, and at least a part of each glass lens is accommodated therein. And a molded body that supports the plurality of glass lenses.
- the lens array is basically configured such that a plurality of glass lenses are supported by the molded body, and the same effect as that obtained when one glass lens is supported by the molded body is obtained. be able to.
- a transparent resin as a molded body
- light may be incident on or emitted from the glass lens through the molded body.
- only one portion of each lens may be used.
- the structure exposed from a molded object may be sufficient.
- the light source module of the present invention includes the above-described lens array and a plurality of light emitting elements that emit light through the lens array.
- a light source device for example, provided with a light emitting element to a lens array molded body in which glass lenses are arranged vertically and horizontally, the light of the light emitting element is irradiated through the lens array.
- the cost can be reduced with respect to the lens array in which convex surfaces are arranged on plate-like glass.
- the mounting part (molded body) having the reference surface (mounting surface) can be provided in a state fixed to the glass lens, and the glass member having the reference surface can be reduced in cost and size. it can.
- FIG. 2 is a cross-sectional view of a principal part showing an outline of a mold for molding a lens member.
- It is a principal part top view which shows the outline of the metal mold
- It is principal part sectional drawing which shows the outline of the state which opened the metal mold
- It is a principal part top view which shows the outline of the metal mold
- FIG. 1 It is a figure which shows the lens member of the 2nd Embodiment of this invention, Comprising: (a) is a bottom view, (b) is a top view, (c) is a side view, (d) is a side view. It is a front view (back view). It is a side view which shows the modification in which the hole 1a of a lens member is not formed similarly. It is a side view which shows the lens member mounted in the board
- the lens member 1 is molded in a state where a true ball processed glass ball lens (glass ball lens) 2 and a part of the ball lens 2 enter the inside.
- a mounting portion (molded body) 13 made of resin is provided.
- the ball lens 2 is processed so as to have a predetermined sphericity by, for example, a well-known sphere processing like a ball of a bearing.
- a ball lens 2 may be an existing product as a glass ball that has been processed into a true sphere, or a lens for glass made of a specified glass material may be processed into a sphere.
- the sphericity, glass material type, diameter, etc. of the glass ball lens 2 can be arbitrarily selected, and the use of the lens member 1, the required optical performance, the size and cost of the product using the lens member 1. Etc. are determined based on the above.
- the glass material which can be used is not specifically limited, Various glass materials can be used.
- Such a ball lens 2 is circular when viewed from the optical axis direction (diameter direction passing through the center of the ball lens 2).
- the mounting portion 13 of the lens member 1 is basically a rectangular parallelepiped, and here is a rectangular parallelepiped having a square cross section.
- the mounting portion 13 is a column having a square cross section that is short in the axial direction, and substantially includes the ball lens 2 inside.
- the mounting portion 13 is viewed as a prismatic member having a square cross section, the four outer peripheral surfaces are rectangular with the same shape, and the remaining two surfaces are a front surface and a rear surface with respect to these four surfaces.
- the front surface may be a surface on which light is incident, and the back surface may be a surface on which light is emitted.
- one of the four outer peripheral surfaces described above is a reference surface (mounting surface) 3 serving as a bottom surface, and the right and left sides thereof are perpendicular to the reference surface 3.
- the left and right side surfaces 5 are the left and right side surfaces 5, and the remaining surface parallel to the reference surface 3 is the top surface 4.
- the mounting portion 13 is a rectangular parallelepiped having a square cross section, and the center of the ball lens 2 is disposed at the center thereof.
- Any of the four surfaces (3, 4, 5) may be used as a reference surface (bottom surface: mounting surface), and any of them may be a top surface or a side surface.
- a substantially cylindrical hole 1 a centering on the center of the rectangular surface is formed on each of the reference surface 3, the top surface 4, and the left and right side surfaces 5 of the mounting portion 13.
- the lens member 1 is viewed from the side surface 5 side.
- the length in the front-rear direction (direction from the front surface 6 to the rear surface 7) is shorter than the length in the vertical direction (direction from the reference surface (bottom surface) 3 to the top surface 4), but the length in the front-rear direction is The diameter of the ball lens 2 is slightly longer.
- a line passing through the center of the ball lens 2 parallel to the axial direction of the mounting portion 13 is an optical axis.
- the optical axis of the ball lens 2 basically passes through the center of the ball lens 2, but the optical axis along the axial direction of the mounting portion 13 is determined in a state where the ball lens 2 is supported by the mounting portion 13. It will be. Further, as shown in FIG. 3, the front surface 6 and the rear surface 7 as a pair of parallel outer surfaces of the rectangular parallelepiped mounting portion 13 are arranged so as to be orthogonal to the optical axis of the ball lens 2.
- the thickness along the optical axis direction of the ball lens 2 is D, and along the optical axis direction between the pair of outer surfaces (front surface 6 and back surface 7) perpendicular to the optical axis of the ball lens 2 of the mounting portion 13.
- the distance the length along the optical axis direction of the mounting portion 13
- the value of T is equal to or greater than the value of D. That is, 1.0D ⁇ T It has become.
- the ball lens 2 is basically substantially covered with the mounting portion 13 as described above, and the ball lens 2 is hardly affected by external light. Thus, stray light can be suppressed.
- the mounting portion 13 is for supporting the ball lens 2 and attaching the ball lens 2 to, for example, a substrate. However, if the mounting portion 13 is too long, the interval with other members on the substrate becomes narrower. Since it becomes difficult to handle, it is preferable that T ⁇ 2.0D. Further, the rear surface 7 (front surface 8) on the light exit side of the ball lens 2 of the mounting portion 13 is closer to the ball lens 2 than the focal point of the ball lens 2. It is preferable that it is on the side close to 2.
- the ball lens 2 is completely buried in the mounting portion 13. That is, the outer surface of the ball lens 2 is disposed inside the six outer surfaces of the rectangular parallelepiped mounting portion 13.
- the mounting portion 13 in addition to the hole 1 a described above, the front surface 6 and the rear surface 7 of the lens member 1 are exposed to the light incident surface and the light exit surface of the ball lens 2, respectively.
- Hole 6a and hole 7a are provided. That is, at least two of the outer surfaces of the ball lens 2 are provided in the outer surfaces of the mounting portion 13 which are parallel to each other (front surface 6 and rear surface 7). The part is exposed from the mounting part 13.
- the hole 6 a is provided from the front surface 6 of the mounting portion 13 of the lens member 1 to the surface (outer surface) of the ball lens 2, and the hole 7 a extends from the back surface 7 of the mounting portion 13 of the lens member 1 to the surface of the ball lens 2. It is provided as follows. The diameters of these holes 6 a and 7 a are larger than the above-described hole 1 a, but smaller than the diameter of the ball lens 2. In addition, a line segment connecting the center of the hole 6 a and the center of the hole 7 a passes through the center of the ball lens 2.
- the front surface and the back surface of the mounting portion 13 have the same shape, and either of them may be the front surface or the back surface, and which of the two spherical surfaces of the ball lens 2 exposed from the front surface and the back surface is selected. It may be an entrance surface or an exit surface.
- An AR coat film is formed on the surface (spherical surface) of the ball lens 2 exposed through the holes 6a and 7a of the mounting portion 13. Note that the center of the mounting portion 13 and the center of the ball lens 2 do not necessarily need to coincide with each other and may be shifted, but the distance between the reference surface 3 and the optical axis of the ball lens 2 is the set distance. It needs to be.
- the synthetic resin which comprises the mounting part 13 is not specifically limited, A well-known thermoplastic resin and a thermosetting resin can be used.
- the resin of the mounting portion 13 needs to be a heat-resistant resin that can withstand the temperature during the reflow process. is there. Further, the color of the resin may be transparent or other colors, but may be black, for example.
- the mounting portion 13 can be easily manufactured in a mold in which the ball lens 2 is arranged with a material different from that of the glass ball lens 2.
- the mounting portion 13 has a reference surface 3 that allows the lens member 1 to be placed in contact with the mounting surface (attached surface) of the substrate (other member).
- the lens member 1 in which the adhesive is applied to the set substrate can be automatically surface-mounted.
- the lens member 1 does not roll like the ball lens 2 alone, and the lens member 1 can be surface-mounted on the substrate without providing the V-groove on the mounting surface.
- the ball lens 2 does not necessarily have to be polished as a glass lens, and uses a method capable of processing a large number of balls at the same time by a true sphere process similar to that of a bearing ball.
- a ball with high sphericity can be used.
- the cost of each ball lens 2 is lower than when the lenses are formed by molding or when the lenses are polished one by one. Therefore, even if it is necessary to form the mounting portion 13 after the ball lens 2 is manufactured, the cost of the lens that is surface-mounted on the substrate can be reduced.
- the mounting portion 13 is slightly longer than the diameter of the ball lens 2 in the front-rear direction, the left-right direction, and the vertical direction so that the ball lens 2 is completely embedded. It can be made much smaller than the one attached.
- the lens member 1 when the lens member 1 is reduced in size, the length of one side of the square of the cross section of the mounting portion 13 approaches the diameter of the ball lens 2.
- the distance between each surface (3, 4, 5) and the ball lens 2 is shortened, and each surface (3, 4, 5) of the mounting portion 13 and the ball lens 2 are closest to each other at the mounting portion.
- the thickness of the resin constituting 13 is reduced, and there is a possibility that a necessary and sufficient strength cannot be maintained and a fragile state is caused.
- the shortest distance (the thinnest thickness) between the outer surface disposed in the mounting portion 13 of the ball lens 2 and the outer surface of the mounting portion 13 is 0.1 mm or more. Preferably there is.
- the lens member 1 in order to reduce the size of the lens member 1, by providing the holes 1a in the portions close to the ball lens 2 on each surface (3, 4, 5), it is possible to remove a portion that may become fragile. preferable. For example, by adopting a structure in which the hole 1a is provided in a portion where the thickness of the mounting portion 13 as the shortest distance is thinner than 0.1 mm, the thickness can be prevented from being thinner than 0.1 mm.
- the lens member 1 can be reduced in size, the thinned portion of the mounting portion 13 can be prevented from being broken. As a result, the lens member 1 can be further reduced in size.
- the hole 1a is provided in the reference surface 3 that comes into contact with the mounting surface, if the hole 1a is filled with, for example, an ultraviolet curable resin as an adhesive, the substrate is directly formed by the ultraviolet curable resin through the hole 1a. And the ball lens 2 can be bonded to each other, and the adhesive strength can be improved. At this time, by filling the hole 1a with an adhesive, the adhesive strength can be increased by increasing the amount of the adhesive depending on the type of the adhesive.
- the adhesive is an ultraviolet curable resin
- the hole 1a is formed in the top surface 4 together with the reference surface 3, so that the ultraviolet light passes from the hole 1a on the top surface 4 to the hole 1a on the reference surface 3 through the ball lens 2.
- the lens member 1 can be easily adhered to the substrate.
- the cross-sectional shape of the mounting portion 13 is not limited to a square.
- the top surface 4 and the reference surface are larger than the distance between the left and right side surfaces 5.
- the distance between the left and right side surfaces 5 may be shorter than the distance between the top surface 4 and the reference surface 3 in order to shorten the distance to 3 or to narrow the left and right width. In this case, it is good also as what provides the hole 1a only in the long surface of each surface (3, 4, 5).
- a method for manufacturing the lens member 1 of the present invention will be described.
- a glass ball which is a glass ball manufactured by well-known true sphere processing, is used as the ball lens 2.
- a resin mounting portion 13 is manufactured on the outside of the glass ball by resin molding.
- the resin molding for example, injection molding is used. In the injection molding at this time, a mold schematically shown in FIGS. 3 to 6 is used.
- the mold is configured to form a cavity 22 as a space filled with resin and molded, and a pair of molds (a fixed mold 26 and a movable mold 27) and a slide core 21 disposed therebetween.
- the slide core 21 is provided so as to reciprocate in one direction with respect to the fixed mold 26.
- the slide core 21 may be provided so as to be reciprocally movable in the movable mold 27.
- the cavity 22 is connected to a runner 24 that fills the cavity 22 with resin through a gate.
- the runner 24 is provided on the slide core 21, for example, and is connected to one of the four corners on the outer periphery of the cavity 22.
- the runner portion 24 a formed by the runner 24 after the molding is cut at the corner portion of the mounting portion 13 corresponding to the cavity 22, including the portion molded by the gate.
- the resin molded by the gate is cut at the position of the cutting surface 25 shown in FIG. At this time, the gate mark (cutting mark) is prevented from coming out of the outer peripheral surface composed of the above-described four surfaces (3.4.5) of the mounting portion 13.
- the fixed mold 26 is provided with a ball receiving portion 23 having a spherical surface corresponding to the ball lens 2, and the ball lens 2 is placed on the spherical surface of the ball receiving portion 23.
- the ball lens 2 and the ball receiving portion 23 are in spherical contact with each other so that the resin filled in the cavity 22 does not enter between the ball receiving portion 23 and the ball lens 2.
- the ball receiving portion 23 is formed so as to protrude from a portion constituting the bottom surface of the cavity 22 of the fixed mold 26, and the ball receiving portion 23 causes a hole on the front surface (or the back surface) of the mounting portion 13 of the lens member 1. 6a (hole 7a) is formed.
- the tip of the slide core 21 has a tip surface 32 that constitutes one of the four wall surfaces around the cavity 22, and the tip surface 32 includes each surface (3 4 and 5) are provided with cylindrical convex portions 29 for forming the holes 1a.
- the four slide cores 21 are close to each of the front end surfaces 32 so that the front end surfaces 32 form the four outer surfaces of the cavity 22, and the mounting portion 13 is molded after resin molding. When the formed lens member 1 is released and removed, the four slide cores 21 are retracted until the cylindrical convex portion 29 is completely removed from the hole 1a of the molded mounting portion 13.
- the movable mold 27 has the same shape as that of the fixed mold 26 except for the slide core 21 and is symmetrical with respect to the plane.
- the movable mold 27 includes a ball covering portion 28 with the ball receiving portion 23 turned upside down. .
- the ball covering portion 28 has a spherical surface corresponding to the ball lens 2 like the ball receiving portion 23, and this spherical surface comes into surface contact with the spherical surface of the ball lens 2 with the movable mold 27 closed.
- the resin filled in the cavity 22 does not enter between the ball covering portion 28 and the ball lens 2.
- the ball covering portion 28 is formed so as to protrude from a portion constituting the bottom surface of the cavity 22 of the fixed mold 26, and the ball covering portion 28 causes a hole on the front surface (or the back surface) of the mounting portion 13 of the lens member 1. 6a (hole 7a) is formed.
- each slide core 21 is retracted along the arrow, and the movable mold 27 is raised along the arrow to receive the ball.
- the ball lens 2 is placed on the spherical surface of the portion 23.
- the slide core 21 is advanced so that the periphery of the cavity 22 is surrounded by the four tip surfaces 32 of the slide core 21 as shown in FIGS.
- the tip end surface of 29 is brought into contact with the ball lens 2 held by the ball receiving portion 23.
- the movable mold 27 is lowered and brought closer to the fixed mold 26.
- the upper side of the cavity 22 is closed by the movable mold 27, and the ball covering portion 28 is covered with the ball lens 2.
- the surface on which the light of the ball lens 2 enters or exits is covered with the spherical surface of the ball receiving portion 23 and the spherical surface of the ball covering portion 28 so as not to come into contact with the flowable resin.
- the resin having fluidity does not enter the contact surface between the cylindrical convex portion 29 of the slide core 21 and the ball lens 2.
- the movable mold 27 is raised and the slide core 21 is retracted to take out the lens member 1 on which the mounting portion 13 is molded.
- the mounting portion 13 having the reference surface 3 is formed by resin molding around the ball lens 2 manufactured by a relatively inexpensive sphere processing as a glass lens. Therefore, it can be manufactured relatively inexpensively. That is, the cost can be reduced compared to a square lens that is a conventional molded lens made of glass or a lens member in which a ball lens is sealed in a housing or a can.
- the mounting portion 13 can be downsized to a size close to the diameter of the ball lens 2, and can respond to a request for downsizing of a device for optical communication, for example.
- the length of each side of the square of the cross section of the mounting portion 13 can be set to 1 mm, 2 mm, 3 mm, etc., for example.
- the diameter of the ball lens 2 is set in accordance with the size of the mounting portion 13. Note that the size of the mounting portion 13 is not limited to that described above, and may be 1 mm or less or 3 mm or more.
- each lens member 101, 41, 51, 62, 71, 81 is a ball lens 2 (or an aspheric lens described later) as in the lens member 1 of the first embodiment. 72) and resin mounting portions 113, 49, 59, 69, 79, 89.
- the ball lens 2 is the same as that of the first embodiment, and the mounting portions 113, 49, 59, The shapes of 69, 79, and 89 are different from those of the first embodiment.
- a different part from 1st Embodiment is demonstrated and description of the structure similar to 1st Embodiment is abbreviate
- the mounting portion 113 of the lens member 101 is basically a rectangular parallelepiped like the first embodiment, and here is a rectangular column that is short in the axial direction of a square cross section.
- the mounting portion 113 is mounted on the mounting surface 108 (attached surface: illustrated in FIG. 9) of the substrate 109 (illustrated in FIG. 9), one of the four outer peripheral surfaces described above serves as a bottom surface.
- the left and right side surfaces 105 are the right and left side surfaces 105
- the remaining surface parallel to the reference surface 103 is the top surface 104.
- FIG. 7A is a bottom view
- FIG. 7B is a plan view
- FIG. 7C is a side view
- FIG. 7D is a front view (or rear view).
- the mounting portion 113 is a three-dimensionally symmetric solid when rotated around the axis of a square column having a square cross section. Any of the four surfaces (103, 1044, 105) may be the reference surface (bottom surface), and any of the four surfaces (103, 1044, 105) may be the top surface or the side surface.
- a substantially cylindrical hole 101a centering on the center of a rectangular surface is formed on each of the reference surface 103, the top surface 104, and the left and right side surfaces 105 of the mounting portion 113. ing. As shown in FIG. 8, the hole 101a may not be provided in the reference surface 103, the top surface 104, and the left and right side surfaces 105. The hole 101a may be provided only on the reference surface 103, may be provided only on the reference surface 103 and the top surface 104, or may be provided only on the left and right side surfaces 105. 103 is preferably provided on the reference surface 103 and the top surface 104.
- the axial length of the mounting portion 113 is shorter than the diameter of the ball lens 2, for example, about the radius of the ball lens 2 or shorter than the radius. Therefore, when the center of the ball lens 2 is arranged at the center of the mounting portion 113, the ball lens 2 is exposed from the front surface 106 and the back surface 107 of the mounting portion 113.
- the spherical surface of the ball lens 2 that protrudes from the mounting portion 113 and is exposed serves as a light incident surface or light exit surface.
- the mounting portion 113 is disposed inside the four outer surfaces.
- the outer surface of the ball lens 2 protrudes outward with respect to the front surface 106 and the rear surface 107 which are the remaining outer surfaces.
- the length of the mounting portion 113 along the optical axis direction of the ball lens 2, that is, the distance between the front surface 106 and the back surface 107 is shorter than the length along the optical axis direction of the ball lens 2, that is, the diameter. become.
- the thickness along the optical axis direction of the ball lens 2 is D, and the distance along the optical axis direction between the front surface 106 and the rear surface 107 as a pair of outer surfaces orthogonal to the optical axis of the ball lens 2 of the mounting portion 113.
- T is T 0.2D ⁇ T It is preferable that That is, if the distance T is too short with respect to the diameter D of the ball lens 2, the lens member 101 becomes unstable when the lens member 101 is mounted, and the possibility that the lens member 101 falls down is increased.
- the length of the portion 113 along the optical axis direction is preferably longer than 0.2 times the diameter of the ball lens 2.
- the front surface 106 and the back surface 107 of the mounting portion 113 have the same shape, and either one may be the front surface 106 or the back surface 107, and the two ball lenses 2 exposed from the front surface 106 and the back surface 107 may be used. Either of the spherical surfaces may be used as the entrance surface or the exit surface. An AR coat film is formed on the surface (spherical surface) of the ball lens 2 exposed from the mounting portion 113.
- such a lens member 101 is mounted on the mounting surface 108 after being mounted on the mounting surface 108 of the substrate 109, for example.
- an automatic surface mounting apparatus is used, and the lens member 101 is placed and fixed in a direction set to a set position (a predetermined coordinate position in the XY coordinate system) of the mounting surface 108 of the substrate 109. Is done.
- the reference surface 103 is in contact with the mounting surface 108 and is placed on the substrate 109 in a stable state.
- the mounting portion 113 is bonded by, for example, an ultraviolet curable resin 110 as an adhesive.
- Reference numerals 111 and 112 indicate incident light or outgoing light of the ball lens 2.
- the lens member 41 of the third embodiment is a lens member 41 corresponding to light in two directions.
- the front surface 46 and the rear surface 47 of the mounting portion 49 have the same shape, and the left and right side surfaces of the mounting portion 49. 45 has the same shape as the front face 46 and the rear face 47. That is, on the left and right side surfaces 45, as with the front surface 46 and the back surface 47, the ball lens 2 protrudes and is exposed.
- the spherical surface of the ball lens 2 exposed from the front surface 46 and the back surface 47 can be used as the light incident surface or the light exit surface, and the spherical surface of the ball lens 2 exposed from the left and right side surfaces is incident on the light.
- Surface or exit surface the lens member 41 can function as a lens with respect to two light beams that are substantially orthogonal to each other. For example, light in two directions can be simultaneously collected or converted into parallel light. In a substrate on which a plurality of light paths that require the ball lens 2 are set, the cost can be reduced.
- the mounting portion 49 of the lens member 41 includes a reference surface 43, a top surface 44, a side surface 45, a front surface 46, and a back surface 47, as in the first embodiment.
- the lens member 51 of the fourth embodiment will be described.
- the lens member 51 is configured such that the ball lens 2 is decentered downward with respect to the mounting portion 59.
- the centers of the mounting portions 13, 112, and 49 of the lens members 1, 101, and 41 mounted on the substrate 109 and the center of the ball lens 2 substantially coincide with each other.
- a part of the surface of the ball lens 2 protrudes from a reference surface 53 as a bottom surface.
- the concave portion 61 is provided on the surface (attached surface) of the substrate 60, and a part of the ball lens 2 protruding from the reference surface 53 of the lens member 51 is formed.
- the reference surface 53 of the lens member 51 is brought into contact with the surface of the substrate 60 in the state of being accommodated in the recess 61.
- a through hole may be used instead of the recess 61.
- the concave portion 61 is provided on the surface (mounting surface) of the substrate 60 as described above, and the lens member 51 is mounted in a state in which a part of the ball lens 2 protruding downward is accommodated, thereby changing the position of the optical axis. It becomes possible to dispose at a position where the distance from the surface of the substrate 60 is equal to or less than the radius of the ball lens 2.
- the mounting portion 59 of the lens member 51 includes a reference surface 53, a top surface 54, a side surface 55, a front surface 56, and a back surface 57, as in the first embodiment.
- this lens member 62 is provided with a convex portion 70 projecting upward on the top surface 64 of the mounting portion 69 of the lens member 62 that is substantially the same as the lens member 101 of the second embodiment. It is.
- the convex portion 70 is provided with a portion to be gripped when the lens member 62 is moved to the mounting surface in an automatic surface mounting apparatus, for example, and protrudes from the mounting portion 69 by gripping the convex portion 70. It is possible to prevent the gripping device from coming into contact with the ball lens 2.
- the mounting portion 69 of the lens member 62 includes a reference surface 63, a top surface 64, a side surface 65, a front surface 66, and a back surface 67, as in the first embodiment.
- the lens member 71 uses an aspheric lens 72 that has already been manufactured in place of the ball lens 2, and the aspheric lens 72 is set in a mold.
- the mounting portion 79 is formed of resin.
- the cost of the lens member 71 differs depending on the aspherical lens 72.
- the aspherical lens 72 is provided with a reference surface for surface mounting, it can be provided at a low cost.
- the lens member 71 includes a reference surface 73, a top surface 74, a side surface 75, a front surface 76, and a back surface 77, as in the first embodiment.
- the aspheric lens 72 has a circular shape when viewed from the optical axis direction.
- the aspherical lens disposed in the cavity of the mold is molded by pressing in the cavity, so that the molding accuracy is improved when the outer shape is circular in rotation. be able to.
- the outer diameter of the aspherical lens may be elliptical, but it seems that the molding accuracy is higher when it is circular.
- the aspherical lens 72 includes an optical function part 72a having an optical function and a flange part 72b provided around the optical function part 72a and used for attaching the lens.
- the front surface and the back surface of the optical function portion 72 a of the aspheric lens 72 are exposed from the holes provided in the front surface 76 and the back surface 77 of the mounting portion 79.
- the mounting portion 13 is formed so that the front surface of the flange portion 72b is exposed on the incident surface (front surface 76) side and the flange portion 72b is covered on the emission (back surface 77) side.
- the flange part 72b may or may not be exposed.
- a lens member that is a modification of the sixth embodiment will be described.
- a split-type mounting part 200 including a lower part 202 and an upper part 201 is used in place of the integrated mounting part 79.
- the lens supported by the mounting unit 200 is the aspheric lens 72 described above.
- the bottom surface of the lower portion 202 of the mounting unit 200 serves as a reference surface.
- the exit surface and the entrance surface of the aspheric lens 72 are exposed between the upper part 201 and the lower part 202 of the mounting part 200.
- this lens member 81 is manufactured so as to take a large number of a plurality of lens members 81.
- a portion that becomes a plurality of mounting portions 89 is formed as a single plate-shaped molded portion.
- a plurality of ball lenses 2 are arranged in a matrix in the vertical and horizontal directions.
- the ball lenses 2 are arranged in two horizontal rows and four vertical rows in the molded portion 82, but the number of vertical and horizontal rows can be arbitrarily set.
- the shape of the mounting portion 89 is a shape in which the hole 1a is not provided on each surface (103, 104, 105) of the mounting portion 113 in the second embodiment.
- the manufacturing of the mounting portion 89 requires a cutting process after molding. However, many lens members 81 can be molded by one molding, and the cost can be reduced.
- the mounting portions 13, 113, 49, 59, 69, 79, and 89 (82) are manufactured by molding a synthetic resin.
- the mounting portions are manufactured by glass (ceramic) by a sol-gel method. It is good also as what to do.
- the solification and the gel are performed. Or gelation. Thereafter, the mounting parts 13, 49, 59, 69, 79, 89 (82) are manufactured by heating and drying.
- the lens member of each embodiment can be effectively used for a projector, a head-up display, or the like in addition to being used for a device related to optical communication as described above.
- a lens member can be used for data transmission in the electronic circuit board.
- the surface-mounted output-side lens member is converted into parallel light by irradiating laser light from a laser diode serving as a light source, and this laser light is incident on the input-side lens member to be condensed and received by a light receiving element. It is good also as a structure which irradiates to.
- the electronic circuit board has a structure capable of transmitting data by the laser light described above. That is, since the lens member is miniaturized, optical communication can be performed within the electronic circuit board without using an optical fiber.
- the communication module of the present embodiment uses the lens member 1, 41.51, 62, 71, 81, 101 of any of the above-described examples.
- the lens member 101 of the second embodiment is used.
- a light emitting element 331, a lens member 101, and a housing 332 that covers them are provided on a substrate 330, and a fiber fixing portion 333 that protrudes from one side surface of the housing 332 is formed.
- the end of the optical fiber (optical communication cable) is fixed to the fiber fixing portion 333.
- the light emitting element 331 includes, for example, a semiconductor laser, and has a light emitting point 331a at the upper end, and laser light is oscillated from the light emitting point 331a.
- the lens member 101 is disposed so that the center position of the ball lens 2 is at the same height as the light emitting point 331 a of the light emitting element 331.
- the laser light oscillated from the light emitting point 331a of the light emitting element 331 is divergent light, which is incident on the ball lens 2 of the lens member 101 and is emitted as convergent light.
- the emitted light is coupled to the end face of the optical fiber 334.
- the use of the lens member 1, 41.51, 62, 71, 81, 101 as described above facilitates miniaturization.
- the lens array 401 according to the present embodiment has a single molded body (mounting part) 402 that supports the ball lenses 2 in a row. That is, the molded body 402 of the lens array 401 is integrally molded so as to support a plurality of ball lenses 2 in a row.
- the shape of the lens array 401 is basically the same as the shape in which the lens members 1, 41.51, 62, 71, 81, 101 of the above-described embodiments are arranged in a row and integrated. .
- the shape is substantially the same as the case where the three lens members 101 are connected in a state where the hole 101a is removed from the lens member 101 of the second embodiment. That is, the length of the molded body 402 along the optical axis direction of the ball lens 2 is shorter than the diameter of the ball lens 2, and the ball lens 2 is exposed at the front surface 406 and the back surface 407 of the molded body 402, One of the two exposed portions of these ball lenses 2 is the entrance surface and the other is the exit surface.
- the lens array 401 includes a front surface 406, a back surface 407, left and right side surfaces 405, a reference surface (bottom surface) 403, and a top surface 404 on the molded body 402.
- Such a lens array 401 is used in a communication module as described above, for example, when a laser is simultaneously incident on a plurality of optical communication cables.
- lasers can be simultaneously coupled to three optical communication cables.
- the lens array 401 basically has a shape similar to the shape in which the lens members 1, 41.51, 62, 71, 81, 101 of the present invention such as the lens member 101 are connected in a row. The same effects as those of the members 1, 41.51, 62, 71, 81, 101 can be obtained.
- n lenses (n is an integer of 2 or more) are supported by the molded body 502 in a row.
- the molded body 502 is made of a transparent resin.
- each ball lens 2 for example, only a portion that becomes an incident surface is exposed from the molded body 502, and the exit surface side is not exposed from the molded body 502 and is inside the molded body 502. The exit surface side may be exposed, and the entrance surface side may be covered with the molded body 50.
- the outer surface on the side where the ball lens 2 is exposed becomes the front surface 506, and the outer surface which is parallel to the front surface 506 and does not expose the ball lens 2 becomes the rear surface 507.
- a pair of long outer surfaces along the alignment direction of the ball lenses 2 out of the outer surfaces orthogonal to the front surface 506 and the rear surface 507 are a top surface and a reference surface 504.
- the front surface of the molded body 502 is a reference surface 504.
- the remaining pair of narrow outer surfaces becomes the side surface 405.
- a lens array 601 shown in FIG. 21 is an array of n ⁇ m (n and m are integers of 2 or more), and a plurality of ball lenses 2 are arranged in rows and columns and supported by a molded body 602.
- the molded body 602 is formed of a transparent resin, and each of the ball lenses 2 is exposed at one place, for example, only the incident surface is exposed. Only the exit surface may be exposed.
- the reference surface of the lens array 601 may be any of the four outer surfaces orthogonal to the outer surface from which the ball lens 2 is exposed. Further, any of the four outer surfaces described above may be used as the reference surface, and the reference surface may be selectable according to the usage pattern or situation. In this modification, an outer surface facing downward in the drawing is used as a reference surface 604.
- the lens array 601 is different from the lens array 501 in which the ball lenses 2 are arranged in only one row, but the ball lenses 2 are arranged in a plurality of rows, but the basic configuration is substantially the same as the lens array 501. It is.
- the Napo lens array 601 can be used, for example, as a lens array for a light source module, which will be described later.
- the surface parallel to the surface from which the ball lens 2 is exposed is, for example, light emission, which will be described later. It is good also as a reference plane with respect to the light source part provided with an element. That is, when the lens array 601 and a light source unit (for example, a light emitting element substrate) on which a plurality of light emitting elements are mounted are arranged in an overlapping state, the lens array 601 and the light source unit are positioned (aligned) on the reference plane. ) May be possible.
- the light source module includes a lens array 601 in which the above-described ball lenses 2 are arranged vertically and horizontally, and a light source unit 603 in which a plurality of optical elements such as light emitting diodes and semiconductor lasers are similarly arranged vertically and horizontally. It is what has.
- the light source module is used as a backlight, other illumination, or the like, or used as a display device in combination with a liquid crystal display or the like.
- the reference surfaces (mounting surfaces) 3, 43, 53, 63, 73, 103, 403, 504, 604 are mounted on the mounting portions 13, 49, 59, 69, 79, 89, 113 and the molded body. You may cut and provide in 402,502,602. That is, the reference surfaces 3, 43, 53, 63, 73, 103, 403, 504, and 604 are formed by cutting after the mounting portions 13, 49, 59, 69, 79, 89, and 113 and the molded bodies 402, 502, and 602 are formed. May be provided.
- the reference surfaces 3, 43, 53, 63, 73, 103, 403, 504, and 604 may have a concave portion or a convex portion that serves as a positioning reference when attached to another member such as a substrate.
- the reference surfaces 3, 43, 53, 63, 73, 103, 403, 504, and 604 are connected to other members and the optical axis of the lens such as the ball lens 2 when attached to other members such as a substrate. It regulates the distance (height on the substrate).
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Abstract
Description
特許文献1では、ガラスレンズの外周形状が四角となるスクエアレンズを用いている。基板(例えば、シリコンベンチ等)上に表面実装する上では、レンズの外周に平面(基準面)があることが好ましい。すなわち、基板のレンズを搭載する搭載面(基板上の平面)に、レンズの外周の平面を当接させるように載置することにより、レンズを基板の搭載面に安定して配置することができる。また、レンズの光軸と平面との配置関係が決まっていて、平面が基準面となっていれば、搭載面に基準面を当接させるだけで、光軸の基板からの距離などが決まることになる。したがって、基板の搭載面にスクエアレンズを、例えば、紫外線硬化樹脂等を用いて容易に接着固定することができる。
この場合に、鏡筒や缶を用いずに、基板に断面V字状のV溝を設けて、真球状の球面レンズ(ボールレンズ)を直接表面実装することも可能だが、ボールレンズのように完全回転対象形となっていると、基板に設置して固定されるまで、光学的指向性が定まらない状態となり、柔軟にボールレンズを利用する事が困難であった。
すなわち、ボールレンズを鏡筒や缶に封止しないで単体で用いることは、実装時のハンドリング、自動実装への対応、基板への接着時のハンドリング等の観点から実用的ではない。
0.2D≦T≦2.0D
となっていることが好ましい。
前記ガラスレンズの光が入射する入射面と、前記ガラスレンズの光が出射する出射面が前記成形体から露出していることを特徴とする。
前記成形体には、当該成形体を他の部材に取り付ける取付面が設けられ、
前記ガラスレンズの光が入射する入射面と、前記ガラスレンズの光が出射する出射面が前記成形体から露出していることを特徴とする。
前記成形体には、当該成形体を他の部材に取り付ける取付面が設けられ、
前記成形体が直方体状に設けられるとともに、前記ガラスレンズが球状に設けられ、
前記成形体の6つの外面のうちの互いに平行な少なくとも2つの前記外面の内側に前記ガラスレンズの外面が配置されていることを特徴とする。
前記ガラスレンズの外面が前記成形体の6つの外面より内側に配置され、
前記成形体の互いに平行な少なくとも一対の前記外面に、前記ガラスレンズの前記外面に至る孔が設けられることにより、前記ガラスレンズの外面の少なくとも2箇所が前記成形体から露出していることが好ましい。
なお、発光素子は、例えば、発光ダイオードや半導体レーザである。また、光通信ケーブルは、例えば、光ファイバを用いたものである。
まず、本発明の第1の実施の形態について説明する。
図1および図2に示すように、レンズ部材1は、真球加工されたガラス製のボールレンズ(ガラスボールレンズ)2と、このボールレンズ2の一部が内部に入り込んだ状態で成形された樹脂製の実装部(成形体)13とを備える。
1.0D≦T
となっている。
すなわち、実装部13の外面のうちの互いに平行な少なくとも2つの外面(正面6と背面7)に、ボールレンズ2の外面に至る孔が設けられていることにより、ボールレンズ2の外面の少なくとも2箇所が実装部13から露出している。
孔6aはレンズ部材1の実装部13の正面6からボールレンズ2の表面(外面)に至るように設けられ、孔7aはレンズ部材1の実装部13の背面7からボールレンズ2の表面に至るように設けられている。これら孔6a、7aの直径は、上述の孔1aより大きいが、ボールレンズ2の直径よりは小さい。また、孔6aの中心と、孔7aの中心を結ぶ線分がボールレンズ2の中心を通るように配置されている。
そこで、レンズ部材1の小型化を進める上では、各面(3、4、5)のボールレンズ2に近接する部分に、孔1aを設けることにより、脆弱になる虞のある部分を取り除くことが好ましい。例えば、上述の最短距離としての実装部13の肉厚が0.1mmより薄くなる部分に孔1aが設けられる構造とすることで、肉厚が0.1mmより薄くならないようにできる。
また、実装面に当接する基準面3に孔1aを設けた場合に、この孔1aに例えば接着剤として紫外線硬化樹脂を充填するようにすれば、紫外線硬化樹脂により、孔1aを介して直接基板とボールレンズ2とを接着することが可能になり、接着強度の向上を図ることができる。また、この際には、孔1a内に接着剤を充填することにより、接着剤の種類にもよるが、接着剤の量を増やして接着強度を高めることができる。
これにより、ボールレンズ2の周囲に直方体状の実装部13が成形される。
このようなレンズ部材1の製造方法によれは、ガラスレンズとして比較的安価な真球加工により製造されたボールレンズ2を用い、その周囲に樹脂成形で基準面3を有する実装部13を成形するだけなので、比較的安価に製造できる。すなわち、従来のガラス製の成形レンズであるスクエアレンズや、ボールレンズを筐体や缶に封止したレンズ部材よりコストを低減できる。また、実装部13は、ボールレンズ2の直径に近いサイズまで小型化可能であり、例えば、光通信用のデバイスの小型化要求に答えることができる。例えば、実装部13の断面の正方形の各辺の長さを、例えば、1mm、2mm、3mm等に設定することができる。なお、この際に実装部13のサイズに対応してボールレンズ2の直径が設定されることになる。なお、実装部13のサイズは、上述のものに限定されるものではなく、1mm以下であっても、3mm以上であってもよい。
なお、以下の各実施の形態において、各レンズ部材101、41、51、62、71、81は、第1の実施の形態のレンズ部材1と同様にボールレンズ2(または、後述の非球面レンズ72等)と樹脂製の実装部113、49、59、69、79、89とからなるもので、ボールレンズ2は、第1の実施の形態と同様であり、実装部113、49、59、69、79、89の形状が第1の実施の形態と異なるものとなっている。以下の説明では、第1の実施の形態と異なる部分を説明し、第1の実施の形態と同様の構成の説明を省略するか簡略化する。
この実装部113を基板109(図9に図示)の実装面108(被取付面:図9に図示)に実装する場合に、上述の外周の4つの面のうちの1つが底面となる基準面103であり、その左右に基準面103に対して直角に配置される面が左右の側面105であり、残りの基準面103に平行な面が天面104となる。
また、この実施の形態では、実装部113は、その中心にボールレンズ2の中心が配置されているので、断面正方形の四角柱の軸回りに回転させた際に4回対称の立体であり、4つの面(103、1044、105)のいずれを基準面(底面)としてもよいし、いずれを天面としても側面としてもよい。
0.2D≦T
となっていることが好ましい。すなわち、ボールレンズ2の直径Dに対して、距離Tが短すぎると、レンズ部材101を実装する際にレンズ部材101が不安定となって、レンズ部材101が倒れる可能性が高くなるので、実装部113の光軸方向に沿った長さは、ボールレンズ2の直径の0.2倍より長いことが好ましい。
図10に示すように、このレンズ部材41は、2方向の光に対応したレンズ部材41であり、実装部49の正面46および背面47が同形状とされるとともに、実装部49の左右の側面45がこれら正面46および背面47と同形状とされている。すなわち、左右の側面45においても、正面46および背面47と同様に、ボールレンズ2が突出して露出した状態となっている。
すなわち、互いに略直交する二つの光に対して、レンズ部材41をレンズとして機能させることが可能であり、例えば、同時に2方向の光を集光または平行光に変換することが可能になる。ボールレンズ2を必要とする光の経路が複数設定されている基板において、コストの低減を図ることができる。なお、レンズ部材41の実装部49は、第1の実施の形態と同様に、基準面43、天面44、側面45、正面46、背面47を備える。
図11に示すように、このレンズ部材51は、実装部59に対してボールレンズ2を下側に偏心して配置したものである。第1~第3の実施の形態では、基板109に実装されるレンズ部材1、101、41の実装部13、112、49の中心と、ボールレンズ2の中心が略一致しているが、第4の実施の形態では、ボールレンズ2の中心を下方に下げることにより、ボールレンズ2の表面の一部が底面としての基準面53から突出した状態となっている。
図12に示すように、このレンズ部材62は、第2の実施の形態のレンズ部材101と略同様のレンズ部材62の実装部69の天面64に上方に突出する凸部70を設けたものである。凸部70は、例えば、自動表面実装装置で、レンズ部材62を実装面に移動させる際に把持する部分を設けたものであり、この凸部70を把持することにより、実装部69より突出するボールレンズ2に把持装置が接触するのを防止することができる。なお、レンズ部材62の実装部69は、第1の実施の形態と同様に、基準面63、天面64、側面65、正面66、背面67を備える。
図13および図14に示すように、このレンズ部材71は、ボールレンズ2に代えて既に製造されている非球面レンズ72を用いたものであり、金型に非球面レンズ72をセットした状態で実装部79を樹脂により成形したものである。この場合に、レンズ部材71のコストは、非球面レンズ72により異なることになるが、非球面レンズ72に表面実装用の基準面を設けるものとした場合に、低コストで設けることが可能である。
なお、レンズ部材71は、第1の実施の形態と同様に、基準面73、天面74、側面75、正面76、背面77を備える。
また、非球面レンズ72は、その光軸方向から見て円形となっている。実装部13をプレスモールディングで製造する場合、金型のキャビティ内に配置された非球面レンズをキャビティ内で加圧して成形するので、回転対照で外形が円形状であるほうが、成形精度を向上することができる。なお、非球面レンズの外径を楕円形としてもよいが、成形精度は円形とした方が高くなると思われる。
図17に示すように、このレンズ部材81は、複数のレンズ部材81を多数個取りするように製造されるもので、例えば、複数の実装部89となる部分を一枚の板状の成形部82として成形するものとし、成形に際し、金型内に複数のボールレンズ2を縦横にマトリックス状に配列している。本実施の形態では、成形された成形部82にボールレンズ2が横2列、縦4列に並んで配置されているが、縦横の列数は、任意に設定可能である。
本実施の形態の通信モジュールは、上述の各実施例のいずれかのレンズ部材1、41.51、62、71、81、101を用いたものである。ここでは、第2の実施の形態のレンズ部材101が用いられている。
図19に示すように、本実施の形態のレンズアレイ401は、1つの成形体(実装部)402に一列にボールレンズ2を支持させたものである。すなわち、このレンズアレイ401の成形体402は、複数のボールレンズ2を一列に支持するように一体に成形されたものである。そのレンズアレイ401の形状は、基本的に上述の各実施の形態のレンズ部材1、41.51、62、71、81、101を一列に並べて一体にした形状と同様の形状を有するものである。本実施の形態では、第2の実施の形態のレンズ部材101から孔101aを除いた状態で、3つのレンズ部材101を繋げた場合と略同様の形状となっている。すなわち、成形体402のボールレンズ2の光軸方向に沿う長さが、ボールレンズ2の直径より短くなっており、ボールレンズ2が成形体402の正面406と、背面407で露出しており、これらのボールレンズ2の2箇所の露出部分の一方が入射面で他方が出射面となる。
このレンズアレイ401は、その成形体402に、正面406、背面407、左右の側面405、基準面(底面)403、天面404を備える。
図22に示すように、光源モジュールは、上述のボールレンズ2が縦横に配列されたレンズアレイ601と、同様に複数の発光ダイオードや半導体レーザ等の光学素子が縦横に配列された光源部603とを有するものである。
光源モジュールは、バックライトやその他の照明等として用いられたり、液晶ディスプレイ等と組み合わされて表示装置として用いられたりするものである。
1a 孔
2 ガラスボールレンズ(ガラスレンズ:ボールレンズ:ガラスボール)
3 基準面(底面:取り付け面)
13 実装部(成形体)
41 レンズ部材
43 基準面(底面:取り付け面)
49 実装部(成形体)
51 レンズ部材
53 基準面(底面:取り付け面)
59 実装部(成形体)
62 レンズ部材
63 基準面(底面:取り付け面)
69 実装部(成形体)
71 レンズ部材
73 基準面(底面:取り付け面)
79 実装部(成形体)
81 レンズ部材
89 実装部(成形体)
101 レンズ部材
103 基準面(底面:取り付け面)
108 実装面(被取付面)
113 実装部(成形体)
330 基板
331 光学素子
401 レンズアレイ
402 成形体(実装部)
403 基準面(取付面)
501 レンズアレイ
502 成形体(実装部)
504 基準面(実装面)
601 レンズアレイ
602 成形体(実装部)
603 光源部(光学素子)
Claims (19)
- 既に作成されたガラスレンズと、当該ガラスレンズに当該ガラスレンズとは異なる材料からなり、前記ガラスレンズが配置された型内に流動可能な状態の前記材料を流入させて固めることにより設けられた実装部とを備え、前記実装部には、前記ガラスレンズを表面実装する場合に、実装面に当接する基準面が設けられていることを特徴とするレンズ部材。
- 前記ガラスレンズを光軸方向から見た場合に円形となっていることを特徴とする請求項1に記載のレンズ部材。
- 前記ガラスレンズが真球加工されたガラスボールからなるガラスボールレンズであることを特徴とする請求項1に記載のレンズ部材。
- 前記実装部が前記ガラスレンズの一部を含む多角形柱状に形成され、前記実装部の断面多角形状の外周面を構成する3つ以上の平面のうちの少なくとも1つの前記平面と前記ガラスレンズの表面とが近接することにより、前記実装部の肉厚が薄くなる部分に当該平面から前記ガラスレンズの表面に至る孔が形成されていることを特徴とする請求項1に記載のレンズ部材。
- 前記実装部が前記ガラスレンズの一部を含む多角形柱状に形成され、前記実装部の断面多角形状の外周面を構成する3つ以上の平面のうちの少なくとも1つの前記平面と前記ガラスレンズの表面とが近接することにより、前記実装部の肉厚が薄くなる部分に当該平面から前記ガラスレンズの表面に至る孔が形成されていることを特徴とする請求項3に記載のレンズ部材。
- 前記実装部の前記基準面と前記ガラスレンズの表面とが近接することにより、前記実装部の肉厚が薄くなる部分に前記基準面から前記ガラスレンズの表面に至る孔が形成されていることを特徴とする請求項1に記載のレンズ部材。
- 前記実装部の前記基準面と前記ガラスレンズの表面とが近接することにより、前記実装部の肉厚が薄くなる部分に前記基準面から前記ガラスレンズの表面に至る孔が形成されていることを特徴とする請求項3に記載のレンズ部材。
- 前記ガラスレンズの前記実装部内に配置される外面と、前記実装部の外面との間の最短距離が0.1mm以上であることを特徴とする請求項1に記載のレンズ部材。
- 前記実装部が直方体状に形成されるとともに、互いに平行な一対の外面が前記ガラスレンズの光軸に直交するように配置され、前記ガラスレンズの光軸方向に沿った厚さをD、前記実装部の前記ガラスレンズの光軸に直交する一対の前記外面間の光軸方向に沿った距離をTとした場合に、Tの値がDの値以上となっていることを特徴とする請求項1に記載のレンズ部材。
- 前記実装部が直方体状に形成されるとともに、互いに平行な一対の外面が前記ガラスレンズの光軸に直交するように配置され、前記ガラスレンズの光軸方向に沿った厚さをD、前記実装部の前記ガラスレンズの光軸に直交する一対の前記外面間の光軸方向に沿った距離をTとした場合に、
0.2D≦T≦2.0D
となっていることを特徴とする請求項1に記載のレンズ部材。 - 請求項1から請求項10のいずれか1項に記載されたレンズ部材の製造に用いられるレンズ部材の製造方法において、
既に作成された前記ガラスレンズが配置された型内に、前記ガラスレンズと異なる材料からなり、かつ、流動性を有する材料を前記型に流入させて固めることにより、前記ガラスレンズを表面実装する際に実装面に当接する基準面を有する実装部を設けることを特徴とするレンズ部材の製造方法。 - ガラスレンズと、前記ガラスレンズの少なくとも一部が内部に収容された状態で成形され、前記ガラスレンズを支持する成形体とを備え、
前記ガラスレンズの光が入射する入射面と、前記ガラスレンズの光が出射する出射面が前記成形体から露出していることを特徴とするレンズ部材。 - ガラスレンズと、前記ガラスレンズの少なくとも一部が内部に収容された状態で成形され、前記ガラスレンズを支持する成形体とを備え、
前記成形体には、当該成形体を他の部材に取り付ける取付面が設けられ、
前記ガラスレンズの光が入射する入射面と、前記ガラスレンズの光が出射する出射面が前記成形体から露出していることを特徴とするレンズ部材。 - 前記他の部材の前記成形体が取り付けられる被取付面に設けられた凹部または貫通孔に挿入されるように、前記成形体の前記取付面から前記ガラスレンズの一部が突出していることを特徴とする請求項13に記載のレンズ部材。
- ガラスレンズと、前記ガラスレンズの少なくとも一部が内部に収容された状態で成形され、前記ガラスレンズを支持する成形体とを備え、
前記成形体には、当該成形体を他の部材に取り付ける取付面が設けられ、
前記成形体が直方体状に設けられるとともに、前記ガラスレンズが球状に設けられ、
前記成形体の6つの外面のうちの互いに平行な少なくとも2つの前記外面の内側に前記ガラスレンズの外面が配置されていることを特徴とするレンズ部材。 - 前記成形体の6つの前記外面の内側に前記ガラスレンズの前記外面が配置され、前記成形体の前記外面のうちの互いに平行な少なくとも2つの前記外面に、前記ガラスレンズの前記外面に至る孔が設けられていることにより、前記ガラスレンズの前記外面の少なくとも2箇所が前記成形体から露出していることを特徴とする請求項15に記載のレンズ部材。
- 請求項1から請求項10または請求項12から請求項16のいずれか1項に記載のレンズ部材と、発光素子と、これらレンズ部材および発光素子が実装される基板とを備え、前記発光素子の光を、前記レンズ部材を介して光通信ケーブルに入射することを特徴とする通信モジュール。
- 複数の球状のガラスレンズと、複数の前記ガラスレンズを所定の配列で並べた状態で、かつ、各ガラスレンそれぞれの少なくとも一部が内部に収容された状態で成形され、複数の前記ガラスレンズを支持する成形体とを備えることを特徴とするレンズアレイ。
- 請求項18に記載のレンズアレイと、前記レンズアレイを介して光を照射する複数の発光素子とを備えることを特徴とする光源モジュール。
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JP2015552553A JP6378204B2 (ja) | 2013-12-12 | 2014-12-12 | レンズ部材、レンズ部材の製造方法、通信モジュール、通信モジュールの製造方法、レンズアレイおよび光源モジュール |
US15/104,050 US9810865B2 (en) | 2013-12-12 | 2014-12-12 | Lens member, method of manufacturing the same, communication module, lens array, and light-source module |
CN201480067325.XA CN105814005B (zh) | 2013-12-12 | 2014-12-12 | 透镜部件、透镜部件的制造方法、通信模块、透镜阵列以及光源模块 |
US15/720,798 US10191235B2 (en) | 2013-12-12 | 2017-09-29 | Lens member, method of manufacturing the same, communication module, lens array, and light-source module |
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US15/720,798 Continuation US10191235B2 (en) | 2013-12-12 | 2017-09-29 | Lens member, method of manufacturing the same, communication module, lens array, and light-source module |
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CN109391750B (zh) * | 2017-08-05 | 2023-05-12 | 宁波舜宇光电信息有限公司 | 一定焦摄像模组 |
JP7399378B2 (ja) * | 2019-08-07 | 2023-12-18 | サターン ライセンシング エルエルシー | 光学装置、照明装置、表示装置および光通信装置 |
CN110900217B (zh) * | 2019-12-13 | 2021-06-08 | 湖北富洋机械制造股份有限公司 | 一种大型齿轮机床工作台的加工方法 |
CN112180480A (zh) * | 2020-10-21 | 2021-01-05 | 扬州紫王优卫科技有限公司 | 一种草帽型石英透镜及其生产工艺 |
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US20160313520A1 (en) | 2016-10-27 |
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US9810865B2 (en) | 2017-11-07 |
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