CN105103025A - Lens for optical communication and optical communication module - Google Patents
Lens for optical communication and optical communication module Download PDFInfo
- Publication number
- CN105103025A CN105103025A CN201480018038.XA CN201480018038A CN105103025A CN 105103025 A CN105103025 A CN 105103025A CN 201480018038 A CN201480018038 A CN 201480018038A CN 105103025 A CN105103025 A CN 105103025A
- Authority
- CN
- China
- Prior art keywords
- lens
- optical axis
- leg
- point
- optical
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Pending
Links
Classifications
-
- 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
-
- 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
- G02B6/4204—Packages, e.g. shape, construction, internal or external details the coupling comprising intermediate optical elements, e.g. lenses, holograms
-
- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01S—DEVICES USING THE PROCESS OF LIGHT AMPLIFICATION BY STIMULATED EMISSION OF RADIATION [LASER] TO AMPLIFY OR GENERATE LIGHT; DEVICES USING STIMULATED EMISSION OF ELECTROMAGNETIC RADIATION IN WAVE RANGES OTHER THAN OPTICAL
- H01S5/00—Semiconductor lasers
- H01S5/02—Structural details or components not essential to laser action
- H01S5/022—Mountings; Housings
- H01S5/0225—Out-coupling of light
- H01S5/02253—Out-coupling of light using lenses
-
- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01S—DEVICES USING THE PROCESS OF LIGHT AMPLIFICATION BY STIMULATED EMISSION OF RADIATION [LASER] TO AMPLIFY OR GENERATE LIGHT; DEVICES USING STIMULATED EMISSION OF ELECTROMAGNETIC RADIATION IN WAVE RANGES OTHER THAN OPTICAL
- H01S5/00—Semiconductor lasers
- H01S5/02—Structural details or components not essential to laser action
- H01S5/022—Mountings; Housings
- H01S5/02208—Mountings; Housings characterised by the shape of the housings
- H01S5/02212—Can-type, e.g. TO-CAN housings with emission along or parallel to symmetry axis
-
- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01S—DEVICES USING THE PROCESS OF LIGHT AMPLIFICATION BY STIMULATED EMISSION OF RADIATION [LASER] TO AMPLIFY OR GENERATE LIGHT; DEVICES USING STIMULATED EMISSION OF ELECTROMAGNETIC RADIATION IN WAVE RANGES OTHER THAN OPTICAL
- H01S5/00—Semiconductor lasers
- H01S5/02—Structural details or components not essential to laser action
- H01S5/022—Mountings; Housings
- H01S5/0225—Out-coupling of light
- H01S5/02251—Out-coupling of light using optical fibres
Abstract
Provided are a lens for optical communication and an optical communication module enabling a significant cost reduction by suppressing damage to a lens during assembly and use, and suppressing interference with a non-interference region during assembly while securing a high moldability. Assuming that when the lens for optical communication is cut along a plane including the optical axis there is a line which extends from a point on the optical axis on a first optical plane of the lens toward the end face of a leg portion along the inner surface of the lens, a first point at which the gradient of a tangent changes is located within the range represented by expression (1), a second point at which the gradient of a tangent changes is located within the range represented by expression (2), and the width of the leg portion is 7% to 40% the length of the leg portion in the optical axis direction. 0.60X <= the distance in the direction orthogonal to the optical axis from the optical axis to the first point <= 0.90X (1) 0.60Y <= the distance in the optical axis direction from the end face of the leg portion to the second point <= 0.90Y (2)
Description
Technical field
The present invention relates to lens and the optical communication module of optical communication, for optical communication etc., such as, the light from light source come by semiconductor laser etc. or optical fiber is coupled with optical fiber or photo detector.
Background technology
In optical communication etc., in order at semiconductor laser or carry out optically-coupled efficiently between photo detector and optical fiber and use the lens of optically-coupled.But in the lens of optically-coupled in the past, the leg widely used primarily of stainless steel carrys out the structure of supporting glass lens.But, there is aspheric glass lens and be generally high price, and needs carry out the operation of assembling through the leg different from raw material, thus there is the problem causing cost significantly to increase.So as Patent Document 1, aspheric high precision is shaped easily and can be developed by the one-piece type lens of mass-produced, plastic leg.
The lens of optical communication are recorded, the leg that the lens of this optical communication are formed with lens section integratedly by resin material and are extended from the periphery of lens section in patent documentation 1.In addition, although be only the record in accompanying drawing, record the figure region that the inner peripheral surface of leg is connected with the first optical surface of the leg side of lens section with fillet (R).
At first technical literature
Patent documentation
Patent documentation 1: Japanese Unexamined Patent Publication 2007-183565 publication
Patent documentation 2: Japanese Unexamined Patent Publication 08-286016 publication
Summary of the invention
The problem that invention will solve
But, the present inventor's such mode having a fillet with the region be connected with the first optical surface of lens section by the inner peripheral surface of leg has as described in Patent Document 1 been shaped the one-piece type lens of leg of optical communication, and result distinguishes that the formability of the lens sometimes caused when being shaped is deteriorated.In addition, also distinguished following problem: even if be shaped time do not have problems, when processing lens or use lens time, if the insufficient strength of the root of the especially leg in the intensity of leg, then probably also can cause breakage.
The present inventor has carried out wholwe-hearted research to the problems referred to above, result has distinguished following situation: breakage during because having the complicated shape of the optical communication lens of leg and easily producing the demoulding, formability is poor, the result of further research is distinguished, according to the position in region with fillet, during the demoulding, produce damaged difficulty, treatability after this, life-span marked change.And, distinguish following situation: because the lens size of optical communication lens is less, therefore, according to the position in region with fillet, the possibility of breakage when fully can suppress the demoulding, but after forming, when configuring the optical element, terminal, distribution etc. as light source and carry out the optical axis alignment between lens in the space formed by lens section and leg etc., probably can cause having the region of fillet and optical element, terminal, noninterference region residing for distribution interfere.
The present invention makes in view of problem as described above, its object is to the optical communication module of the lens a kind of lens of optical communication being provided and using this optical communication, with the breakage of lens when using when can suppress to assemble while guaranteeing high formability, and, can suppress assembling time and noninterference region interfere, consequently, can seek significantly to reduce costs.
For solving the scheme of problem
The lens of optical communication of the present invention are the lens of the optical communication light beam penetrated from light source being carried out to optically focused, it is characterized in that, described lens use plastic raw materials to make, lens section and the leg of tubular that extends from the optical axis direction of lens section described in all edges of described lens section are shaped integratedly and form described lens, described lens section has the first optical surface in leg side, when with lens described in the section on plane comprising optical axis and when considering the inside surface from the point on the optical axis described first optical surface along described lens towards the line of leg end face, in the scope of following formula (1), there is the first point that tangent slope changes before and after it, in the scope of following formula (2), there is the second point that tangent slope changes before and after it,
Distance≤the 0.90X (1) in optical axis vertical direction of 0.60X≤from optical axis till described first
Distance≤the 0.90Y (2) in the direction of the optical axis of 0.60Y≤from described leg end face till described second point
Be by described first rectilinear form be connected with described second point by the shape of the inside surface of described first described lens be connected with described second point or compare the concavity caved in by described first straight line be connected with described second point, the width of described leg is 7 ~ 40% relative to the minimum value of the ratio of the optical axis direction length of described leg.Wherein, X represent when using described optical axis as zero point, in optical axis vertical direction from the inner surface side edge of the described lens of described leg end face at a distance of the optical axis distance lighted till optical axis farthest, Y represent when using described leg end face as zero point, in the direction of the optical axis from the inside surface of described lens, distance except described first optical surface in the direction of the optical axis at a distance of the described leg end face position farthest till described leg end face.
According to the present invention, when with the section on plane lens comprising optical axis and when considering inside surface from the point on the optical axis the first optical surface along lens towards the line of leg end face, in the scope of formula (1), there is the first point that tangent slope changes before and after it, in the scope of formula (2), there is the second point that tangent slope changes before and after it, thus, leg is thicker, therefore, by lens from the intensity fully can guaranteeing leg during mold releasability, can suppress to rupture at leg during lens release.And, due to the intensity of leg fully can be guaranteed, therefore, even if mechanical pressure when lens combination to be contained on substrate and to carry out optical axis alignment etc. changes, after this by lens interior air seal when in pressure change, external temperature (-80 DEG C ~ 100 DEG C) or humidity marked change and cause interior pressure to change or environment self changes when using the assembly be assembled into, also can guarantee the high reliability being able to stand Long-Time Service.Because first is present in the scope of formula (1) and (2) with second point respectively, therefore, the inside surface of lens can be avoided when lens combination being contained on substrate and carry out optical axis alignment etc. and there is optical element, terminal, distribution and do not wish that producing the region of interfering interferes.And, owing to there is the first point in the scope of formula (1), therefore, the region that first is connected with second point is in the position away from optical axis, so, even if the illumination spilt from light source becomes to first region be connected with second point the parasitic light do not expected, light quantity is also little, can suppress the problem of parasitic light.In addition, in the mould of molded lens, when the mould split of shaping first optical surface and leg, by meeting formula (1), first is fully left from optical surface, therefore, fully can guarantee the thickness of the front end face of the mould of shaping leg, when die-cut, injection moulding time mould be difficult to breakage.In addition, when the shape of the inside surface of the described lens be connected with second point by first is the rectilinear form be connected described first with described second point, fully noninterference region can be guaranteed, and, for the handling ease of the mould of molded lens.In addition, be, when comparing the concavity caved in by the straight line that be connected with described second point at first, noninterference region can be guaranteed further in the shape of the inside surface of the lens be connected with second point by first.
Therefore, the miniaturization of lens can also be tackled.Further, when supposing that the light spilt from light source has incided the region by first concavity be connected with second point, incident light towards the direction left from optical axis, therefore, can reduce the possibility becoming parasitic light because of this shape.
In addition, because the width of leg is the value of 7 ~ 40% relative to the minimum value of the ratio of the optical axis direction length of leg, therefore, the not only strength-enhanced of the root of leg, and, as the strength-enhanced of leg entirety.In addition, the width of leg is preferably, and is the value of more than aforementioned minimum, only makes a part for leg be in aforementioned range in the Zone Full of leg relative to the ratio of the optical axis direction length of leg.Width due to leg is below the upper limit, and therefore, lens can not become excessive, can be suitable for actual use, and also can tackle miniaturization.
The feature of the assembly of optical communication of the present invention is, the lens combination of above-mentioned optical communication is loaded on the substrate of supporting optics and forms.
The effect of invention
According to the present invention, the optical communication module of the lens that optical communication can be provided and the lens using this optical communication, with the breakage of lens when using when can suppress to assemble while guaranteeing high formability, and, when can suppress to assemble, transition face and noninterference region are interfered, consequently, can seek significantly to reduce costs.
Accompanying drawing explanation
Fig. 1 is the optical axis direction cut-open view of the optical communication module 10 of the first embodiment.
Fig. 2 is the stereographic map of the major part of the state representation optical communication module 10 decomposed.
Fig. 3 is the figure of manufacturing process (a) ~ (d) representing lens 20.
Fig. 4 is the cut-open view of the lens 20 of the second embodiment.
Fig. 5 is the cut-open view of the lens 20 of the 3rd embodiment.
Embodiment
Below, based on accompanying drawing, the first ~ three embodiment of the present invention is described.
Fig. 1 is the optical axis direction cut-open view of the optical communication module 10 of the first embodiment, and Fig. 2 is the stereographic map of the major part of the state representation optical communication module 10 decomposed.Having the central authorities of discoideus stem stem 12 of bar-shaped terminal 11 of power supply, chip carrying portion 13 being installed, in the side in chip carrying portion 13, laser chip 15 being installed as optical element via heat radiator 14.Laser chip 15 is connected with terminal 11 via not shown distribution.As the light source that optical element uses, use LED (LightEmittingDiode: light emitting diode), LD (LaserDiode: laser diode), VCSEL (VerticalCavitySurfaceEmittingLaser: vertical cavity surface emitting laser) etc.In addition, when lens 20 are used as sensitive side, do not use light source and use photo detector (such as PD (PhotoDiode: photodiode)).
Lens 20 are configured with in the mode in the outside covering laser chip 15.Lens 20 are plastics system (acrylic acid, PC etc.), the leg 21 of tubular being formed with lens section 22 integratedly and extending from the optical axis direction (also comprising roughly optical axis direction) of lens section 22 weeks edge lens sections.Because lens 20 are plastics systems, therefore, compared with glass lens, more easily break, and, be more easily subject to the impact of temperature.In addition, as the material of plastic raw materials, as long as the resin that ultrared transmitance is good, and be not particularly limited, enumerate acryl resin, polycarbonate resin, vibrin, cyclic olefin resins, polysulfone resin, polyethersulfone resin, polyimide resin, polyetherimide resin, polymethylpentene resin, organic siliconresin, epoxy resin etc.In above-mentioned material, especially from being difficult to the viewpoint producing optical property change because of moisture absorption, be preferably cyclic olefin resins.In addition, leg was stainless steel in the past, but the leg 21 of lens 20 is plastics systems, therefore, was easily subject to the impact of environment for use.By the end face 21b of leg 21 is bonding with stem stem (substrate of supporting optics) 12, lens 20 are installed in stem stem 12.In addition, lens 20 are plastics systems, and stem stem 12 is usually implemented gold-plated, and therefore, the end face 21b of leg 21 does not usually carry out deposition etc. and utilizes bonding agent to be mounted.In addition, the datum clamp face when end face 21b of leg 21 also becomes the location of carrying out lens section 22 sometimes.In addition, leg 21 is preferably cylindric or roughly cylindric, but is the polygonal tubular such as quadrilateral or pentagon when also can become viewed from optical axis direction.In addition, as bonding agent, enumerate heat-curable adhesive, hot-melt adhesive, UV curability bonding agent, anaerobic pressure adhesive, epoxies bonding agent etc., but UV curability bonding agent, epoxies bonding agent little on the impact of lens when preferably using bonding, and, preferably use and to there is enough bonding forces, low viscosity and the high bonding agent of the indiffusible thixotropy of liquid with metal species and resene.
The end side of the inner peripheral surface 21a of leg 21 and outer peripheral face 21c become the roughly barrel surface parallel with optical axis.Lens section 22 has the first optical surface S1 of laser chip 15 side and the second optical surface S2 of optical fiber FB side.Lens section 22 side of inner peripheral surface 21a becomes the region ST of taper.In addition, by when being set to uneven surface around the second optical surface S2, can reducing the diffusion of unwanted light and become the possibility of parasitic light, is therefore preferred.
Outside the optical axis orthogonal directions of lens 20, in the mode be welded on stem stem 12, the bearing 30 of cylindric stainless steel is installed across small gap.In the front end of bearing 30, be fixed with the sleeve 31 of the less cylindrical shape of diameter, be inserted with lasso 32 therein, optical fiber FB is inserted in this lasso 32, and the end of optical fiber FB and lens section 22 are in opposite directions.
The action of the optical communication module 10 of present embodiment is described.When powering via terminal 11, laser chip 15 is luminous, and this outgoing beam scioptics portion 22 is reflected by plane of refraction and is condensed to the end face of optical fiber FB, after this propagates in optical fiber FB.Now, also can at the diffraction structure of the first optical surface S1 or the second optical surface S2 setting for making temperature characterisitic good.The plastics lens of optical communication are used in various temperature environment, therefore, lens expand because of temperature variation or shrink, thus likely cause changes in optical properties, but by arranging the diffraction structure making temperature characterisitic good, the expansion that can alleviate lens or the impact of shrinking optical characteristics.
Fig. 3 (a) ~ (d) is the figure of the manufacturing process representing the lens being suitable for above-mentioned embodiment.Fixed mould FM has: the transfer surface FM1 of transfer printing second optical surface S2 and the smooth land area FM3 around it.On the other hand, can the moveable die MM of movement have relative to fixed mould FM: main mould AM and nested mould (secondary mould) BM.Although main mould AM and nested mould (secondary mould) BM also can be the structures of one, from the viewpoint of Mold Making, be preferably the structure of split.Main mould AM has: the circular open AM2 of the transfer surface AM5 of the transfer surface AM1 of the interior periphery of transfer printing leg 21, the end face 21b of transfer printing leg 21, central authorities, for gate part AM3 that plastic raw materials is flowed into from outside and with land area FM3 smooth land area AM4 in opposite directions.Now, the degree of depth of gate part AM3 in optical axis direction length is 1.3mm.In addition, when the maximal value of lens length in the direction of the optical axis not comprising lens section is 2.5:1 ~ 1.5:1 with the ratio of the degree of depth of gate part, easily can carry out gate cutting and charging efficiency is high, be therefore preferred.
Gate part AM3 is formed by the land area FM3 of the cross section rectangular channel be formed on the land area AM4 of moveable die MM and fixed mould FM, therefore, land area FM3 can be made to be simple plane, thus simplifies the structure of mould.Gate part AM3 is communicated with the position of the outer peripheral face corresponding to leg 21, not arrange towards lens section 22 with the position mode in opposite directions of the inner peripheral surface corresponding to leg 21.That is, relative to the space (lens section after shaping) be shaped by transfer surface FM1 and transfer surface BM1, gate part AM3 at least partially at optical axis direction location overlap.The part in the space formed by transfer surface AM1 and transfer surface AM5 becomes the part of shaping leg.
Cylindric nested mould BM is embedded in circular open AM2 and can moves relative to main mould AM, has the transfer surface BM1 of transfer printing first optical surface S1 in front end.
The manufacturing process of the lens being suitable for above-mentioned embodiment is described, first, as shown in Fig. 3 (a), makes moveable die MM carry out matched moulds relative to fixed mould FM and be close to make land area FM3, AM4.In this condition, the plastic raw materials of melting is injected in inner die cavity via gate part AM3.
And then, as shown in Fig. 3 (b), after raw material cooling, make moveable die MM integratedly relative to fixed mould FM remotely displacement.
Then, as shown in Fig. 3 (c), make nested mould BM from main mould AM relative movement highlightedly.So, the optical surface as the lens 20 of drip molding is released by transfer surface BM1, now, because lens 20 have first A and second point B in the scope of following formula (1), (2), therefore, thickness near the root fully can guaranteeing leg, stably can come off from main mould AM.After this, drip molding is pulled down from transfer surface BM1, but the running channel GT ' obtained owing to drip molding being linked with solidification in gate part AM3, therefore, in the operation shown in Fig. 3 (d), above-mentioned running channel GT ' is cut off (C) and section is ground.Lens 20 can be obtained by above-mentioned operation.But, when section is the shape that can allow, not necessarily need grinding.
Fig. 4 is the figure of the lens 20 representing the second embodiment.The optical axis direction total length H of the lens 20 in present embodiment is 3.5mm, and its outer diameter D is 4.7mm, and the optical axis direction length L of leg 21 is 2mm, and the width of leg end face is 0.4mm.Usually, the total length H of the one-piece type lens of leg of optical communication is 3 ~ 7mm, and outer diameter D is 2 ~ 6mm, and the optical axis direction length of leg 21 is 1 ~ 4mm, and the width of leg end face is 0.2 ~ 0.6mm.If relative to the optical axis direction length of leg, the minimum value of the width proportion of leg is about 7 ~ 40%, then the strength-enhanced of the not only root of leg, and as the strength-enhanced of leg entirety, is therefore preferred.More preferably 15 ~ 30% are set to.Width due to leg is below the upper limit, and therefore, lens can not become excessive, can be suitable for actual use, and also can tackle miniaturization.In addition, the roughness of leg inner peripheral surface and outer peripheral face is preferably, and 10 mean roughness being foundation with JIS0601-1976 (standard of Japanese Industrial Standards surfaceness) are more than 1.0 μm less than 50 μm.Because roughness is less than 50 μm, therefore, ejection resistance is also less large, leg is difficult to tear at root, because roughness is more than 1.0 μm, therefore, even if the light spilt from light source shines leg and does not also produce internal reflection and in surface scattering, so be difficult to become parasitic light.In addition, the roughness of the leg in present embodiment is 8 μm.In addition, optical axis direction length that is said at this, leg 21 represent from the inside surface of lens, distance in the direction of the optical axis except the first optical surface in the direction of the optical axis at a distance of the leg end face position farthest till leg end face.Lens 20 are by utilizing the plastic raw materials leg 21 of tubular that extends of molded lens portion 22 and all edges optical axis direction from lens section 22 and obtaining integratedly.In addition, leg is tubular, and shape when observing from optical axis direction can be arbitrary shape, such as, be circle, circular, polygon, roughly polygon etc.Be circular in the present embodiment.
Lens section 22 has the first optical surface S1 in leg side, when with the section on plane lens 20 comprising optical axis and when considering inside surface from the point on the optical axis the first optical surface S1 along lens towards the line of leg end face, in the scope of following formula (1), there is first A that tangent slope changes before and after it, in the scope of following formula (2), there is the second point B that tangent slope changes before and after it.
Distance≤the 0.90X (1) in optical axis vertical direction of 0.60X≤from optical axis till described first A
Distance≤the 0.90Y (2) in the direction of the optical axis of 0.60Y≤from described leg end face till described second point B
Wherein, X represent when using optical axis as zero point, in optical axis vertical direction from the inner surface side edge of the lens of leg end face at a distance of the optical axis distance lighted till optical axis farthest, Y represent when using leg end face as zero point, in the direction of the optical axis from the distance except the first optical surface except in the direction of the optical axis apart leg end face position farthest till leg end face in the inside surface of lens.In addition, by meeting following formula (3), (4), above-mentioned effect more preferably, by making it also meet following formula (5), (6), can obtain preferred effect.
Distance≤the 0.85X (3) in optical axis vertical direction of 0.70X≤from optical axis till described first A
Distance≤the 0.85Y (4) in the direction of the optical axis of 0.65Y≤from described leg end face till described second point B
Distance≤the 0.82X (5) in optical axis vertical direction of 0.75X≤from optical axis till described first A
Distance≤the 0.80Y (6) in the direction of the optical axis of 0.70Y≤from described leg end face till described second point B
In addition, first A and second point B is in same side relative to optical axis.
As mentioned above, lens 20 are shapes that the little and leg of total length or profile extends, therefore, become the shape easily producing leg breakage when the demoulding, but owing to there is first A in the scope of formula (1) and there is second point B in the scope of formula (2), so the thickness of leg fully can be guaranteed, the breakage during demoulding can be suppressed.And, owing to there is first A in the scope of formula (1) and there is second point B in the scope of formula (2), therefore, lens 20 are bonding with stem stem 12 and the inside surface of lens can be avoided when carrying out optical axis alignment etc. and exist as the optical element of light source, terminal, distribution and do not wish that producing the region of interfering interferes, due to the intensity of leg fully can be guaranteed, therefore, the possibility of breakage when also can be reduced in bonding with stem stem 12.Further, when being used as optical communication assembly etc., even if create the change of interior pressure, the change of surrounding enviroment, the use being with high reliability able to stand Long-Time Service can also be kept.In addition, owing to there is first A in the scope of formula (1), therefore, the region that first A is connected with second point B is in the position away from optical axis, so, even if the illumination spilt from light source becomes to the region that first A is connected with second point B the parasitic light do not expected, light quantity is also little, can suppress the problem of parasitic light.In addition, as in the present embodiment, in the mould of molded lens, when the mould split of shaping first optical surface and leg, by meeting formula (1), first A fully leaves from optical surface, therefore, fully can guarantee the thickness of the front end face of the mould of shaping leg, when the cutting of mould, injection moulding time mould be difficult to breakage.
In addition, as shown in Figure 4, in the lens 20 of the second embodiment, the shape of the region ST be connected with second point B by first A relative to the space formed by lens section and leg concavely, therefore, while the intensity of leg keeping lens, noninterference region can be guaranteed further, also can tackle the miniaturization of lens.In addition, when supposing that the light spilt from optical element has incided region ST, incident light, towards the direction left from optical axis, therefore, can reduce the possibility that the light spilt becomes parasitic light.In addition, first A and second point B is in same side relative to optical axis.For the object such as intensity and noninterference region NI guaranteeing leg to greatest extent, comprise first A in the cross sectional shape of the optical axis of lens and second point B, also can exist multiple at optical axis one-sided, but in order to simplify the structure of lens, mould, preferably only there is one at the one-sided of optical axis respectively.
Below, the lens 20 of the 3rd embodiment are described.Fig. 5 is the cut-open view of the lens 20 of the 3rd embodiment.Present embodiment is the embodiment be out of shape the second embodiment, and not specified part is identical with the lens 20 of the second embodiment.
As shown in Figure 5, in lens 20 in the third embodiment, the shape of the region ST be connected with second point B by first A is straight line, therefore, for the handling ease of the mould of molded lens 20, can carry out the manufacture of low cost.
Below, the result of study that the present inventor carries out is described.The present inventor changes to the distance x in optical axis vertical direction from optical axis till described first A and the distance y in the direction of the optical axis from leg end face till second point B the broadness evaluating release property and inner space.Evaluation result is as shown in table 1.In addition, about the metewand of the release property in table, as described below.
◎: very good
Zero: good
×: poor
On the other hand, about the metewand of the broadness for inner space, as described below.
◎: can guarantee that inner space has surplus
Zero: can inner space be guaranteed
×: fully do not guarantee inner space
[table 1]
Result according to table 1: in the structure meeting formula (1), (2), because the intensity of the root of leg is high, therefore, release property is strong, also can guarantee inner space.In addition, because the intensity of the root of leg is high, therefore, having when assembling and when using also can not be damaged and fully can be able to stand the performance of actual use.In addition, known: because embodiment 4 ~ 6 also meets formula (5), (6), therefore, the intensity of leg is also enough high, also fully can guarantee inner space.
The present invention is not limited to embodiment, embodiment described in instructions, the embodiment described in this instructions, embodiment, technological thought, for those skilled in the art of this area, obviously comprises other embodiments, variation.Such as, in order to the light penetrated from optical fiber is collected in photo detector, also lens of the present invention can be used.
Description of reference numerals
10 optical communication modules
11 terminals
12 stem stems
13 chip carrying portions
14 heat radiator
15 laser chips
20 lens
21 legs
21a leg inner peripheral surface
21b leg end face
22 lens sections
30 bearings
31 sleeves
32 lassos
A first point
AM fixed mould
The main mould of AM
AM1 transfer surface
AM2 circular open
AM3 gate part
AM4 land area
AM5 transfer surface
B second point
The nested mould of BM
BM1 transfer surface
FB optical fiber
FM fixed mould
FM1 transfer surface
FM3 land area
GT gate part
MM moveable die
NI noninterference region
OA optical axis
S1 first optical surface
S2 second optical surface
Claims (3)
1. lens for optical communication, carry out optically focused to the light beam penetrated from light source, it is characterized in that,
Described lens use plastic raw materials to make, and lens section and the leg of tubular that extends from the optical axis direction of lens section described in all edges of described lens section are shaped integratedly and form described lens,
Described lens section has the first optical surface in leg side,
When with lens described in the section on plane comprising optical axis and when considering the inside surface from the point on the optical axis described first optical surface along described lens towards the line of leg end face, in the scope of following formula (1), there is the first point that tangent slope changes before and after it, in the scope of following formula (2), there is the second point that tangent slope changes before and after it
Distance≤the 0.90X (1) in optical axis vertical direction of 0.60X≤from optical axis till described first
Distance≤the 0.90Y (2) in the direction of the optical axis of 0.60Y≤from described leg end face till described second point
Be by described first rectilinear form be connected with described second point by the shape of the inside surface of described first described lens be connected with described second point or compare the concavity caved in by described first straight line be connected with described second point,
The width of described leg is 7 ~ 40% relative to the minimum value of the ratio of the optical axis direction length of described leg,
Wherein, X represent when using described optical axis as zero point, in optical axis vertical direction from the inner surface side edge of the described lens of described leg end face at a distance of the optical axis distance lighted till optical axis farthest, Y represent when using described leg end face as zero point, in the direction of the optical axis from the inside surface of described lens, distance except described first optical surface in the direction of the optical axis at a distance of the described leg end face position farthest till described leg end face.
2. the lens of optical communication as claimed in claim 1, is characterized in that,
Meet following conditional:
Distance≤the 0.85X (3) in optical axis vertical direction of 0.70X≤from optical axis till described first
Distance≤the 0.85Y (4) in the direction of the optical axis of 0.65Y≤from described leg end face till described second point.
3. an optical communication module, is characterized in that, the substrate lens combination of the optical communication described in claim 1 or 2 being contained in supporting optics is formed.
Applications Claiming Priority (3)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP2013-063926 | 2013-03-26 | ||
| JP2013063926 | 2013-03-26 | ||
| PCT/JP2014/056423 WO2014156630A1 (en) | 2013-03-26 | 2014-03-12 | Lens for optical communication and optical communication module |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN105103025A true CN105103025A (en) | 2015-11-25 |
Family
ID=51623613
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201480018038.XA Pending CN105103025A (en) | 2013-03-26 | 2014-03-12 | Lens for optical communication and optical communication module |
Country Status (3)
| Country | Link |
|---|---|
| JP (1) | JPWO2014156630A1 (en) |
| CN (1) | CN105103025A (en) |
| WO (1) | WO2014156630A1 (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN114236710A (en) * | 2021-12-13 | 2022-03-25 | 无锡鑫巨宏智能科技有限公司 | High-speed coupling lens |
| CN115516344A (en) * | 2020-06-11 | 2022-12-23 | 阿尔卑斯阿尔派株式会社 | Optical component and optical module using same |
Families Citing this family (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP6453549B2 (en) * | 2014-02-28 | 2019-01-16 | コイズミ照明株式会社 | lighting equipment |
Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2005209840A (en) * | 2004-01-22 | 2005-08-04 | Konica Minolta Opto Inc | Semiconductor laser device and optical pickup device |
| JP2005259762A (en) * | 2004-03-09 | 2005-09-22 | Opnext Japan Inc | Semiconductor laser module and optical transmitter |
| US20060114579A1 (en) * | 2004-11-29 | 2006-06-01 | Konica Minolta Holdings, Inc. | Optical element holding structure, optical element lens-barrel and optical communication module |
| CN101079437A (en) * | 2002-07-01 | 2007-11-28 | 罗姆股份有限公司 | Image sensor module |
Family Cites Families (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2004061623A (en) * | 2002-07-25 | 2004-02-26 | Rohm Co Ltd | Image sensor module and its manufacture method |
-
2014
- 2014-03-12 JP JP2015508262A patent/JPWO2014156630A1/en active Pending
- 2014-03-12 CN CN201480018038.XA patent/CN105103025A/en active Pending
- 2014-03-12 WO PCT/JP2014/056423 patent/WO2014156630A1/en active Application Filing
Patent Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101079437A (en) * | 2002-07-01 | 2007-11-28 | 罗姆股份有限公司 | Image sensor module |
| JP2005209840A (en) * | 2004-01-22 | 2005-08-04 | Konica Minolta Opto Inc | Semiconductor laser device and optical pickup device |
| JP2005259762A (en) * | 2004-03-09 | 2005-09-22 | Opnext Japan Inc | Semiconductor laser module and optical transmitter |
| US20060114579A1 (en) * | 2004-11-29 | 2006-06-01 | Konica Minolta Holdings, Inc. | Optical element holding structure, optical element lens-barrel and optical communication module |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN115516344A (en) * | 2020-06-11 | 2022-12-23 | 阿尔卑斯阿尔派株式会社 | Optical component and optical module using same |
| CN115516344B (en) * | 2020-06-11 | 2023-12-15 | 阿尔卑斯阿尔派株式会社 | Optical component and optical module using the same |
| CN114236710A (en) * | 2021-12-13 | 2022-03-25 | 无锡鑫巨宏智能科技有限公司 | High-speed coupling lens |
Also Published As
| Publication number | Publication date |
|---|---|
| WO2014156630A1 (en) | 2014-10-02 |
| JPWO2014156630A1 (en) | 2017-02-16 |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN101075007B (en) | Optical transmission module and method of manufacturing the same | |
| US9291783B2 (en) | Optical receptacle and optical module provided with same | |
| WO2013146449A1 (en) | Optical receptacle and optical module comprising same | |
| CN102313938A (en) | The lock pin of lock pin and band optical fiber | |
| CN103363446B (en) | Lamp, reflector for lamp and method for production of reflector | |
| CN105103025A (en) | Lens for optical communication and optical communication module | |
| KR20070025378A (en) | Luminescent lamp | |
| US8556524B2 (en) | Optical communication module | |
| US8622636B2 (en) | Optical fiber connector | |
| US20090092362A1 (en) | Optical module providing a sleeve burying a tubular member | |
| CN104662462A (en) | Lens for optical communication and optical communication module | |
| US9022617B2 (en) | Lens and light emitting diode backlight module having the same | |
| CN104685397B (en) | The lens of optic communication, optical communications module and shaping dies | |
| JP2010231130A (en) | Optical module | |
| JP2009271457A (en) | Method for manufacturing optical element module | |
| JP2014195921A (en) | Mold for molding lens for optical communication, lens for optical communication, and method for molding lens for optical communication | |
| JP2014197086A (en) | Module for optical communication or optical communication unit | |
| US20160216455A1 (en) | Optical fiber connector | |
| US20090045424A1 (en) | Silicone based circuit board indicator led lens | |
| US20110228405A1 (en) | Optical lens and method for producing an optical lens | |
| JP2012237819A (en) | Holder for an optical module | |
| US8207941B2 (en) | Lens module and optical mouse using the same | |
| US9505185B2 (en) | Lens mold and method for manufacturing lenses utilizing the lens mold | |
| JP5553919B2 (en) | Photoelectric device | |
| US9207411B2 (en) | Fiber connector |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C06 | Publication | ||
| PB01 | Publication | ||
| C10 | Entry into substantive examination | ||
| SE01 | Entry into force of request for substantive examination | ||
| WD01 | Invention patent application deemed withdrawn after publication | ||
| WD01 | Invention patent application deemed withdrawn after publication |
Application publication date: 20151125 |