CN103630984A - Optical element - Google Patents
Optical element Download PDFInfo
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- CN103630984A CN103630984A CN201310363416.5A CN201310363416A CN103630984A CN 103630984 A CN103630984 A CN 103630984A CN 201310363416 A CN201310363416 A CN 201310363416A CN 103630984 A CN103630984 A CN 103630984A
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- light
- face
- optical element
- direct
- travel
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Abstract
The invention aims to provide an optical element capable of changing the light heading direction while being good in punching moldability. The optical element (1) capable of changing the light heading direction is characterized by being in the form of a columnar body (2) in appearance. One end of the columnar body (2) is provided with a first surface (3), and the other end of the columnar body (2) is provided with a second surface (4). The first surface (3) is provided with a light-converging functional surface (3a) and the second surface (4) is provided with a light-heading-direction changing surface (4a). The light-heading-direction changing surface (4a) obliquely transect the optical axis (7) of the light-converging functional surface (3a), so as to change the heading direction of the light converged by the light-converging functional surface (3a). Meanwhile, the light-heading-direction changing surface (4a) is formed on one part of the second surface (4).
Description
Technical field
The present invention relates to the optical element that optical fiber is combined optically with photo detector, relate in particular to the optical element of the direct of travel that changes light.
Background technology
In optical communication etc., the optical element that the photo detectors such as the light that penetrates from optical fiber and photodiode are combined optically.
Fig. 9 is the sketch of disclosed optical module in patent documentation 1.As shown in Figure 9, in patent documentation 1, disclosed optical module has optical fiber 702, optical element 701 and photo detector 703.And the light penetrating from optical fiber 702 is the angle reflection of 90 ° by optical element 701 and is combined optically with photo detector 703.
As shown in Figure 9, optical element 701 has: the convex lens 701b that the light penetrating from optical fiber 702 is assembled; Reflecting surface 701a by the light of being assembled by convex lens 701b towards photo detector 703 reflections; The smooth face 701c that the light being reflected by reflecting surface 701a passes through.Reflecting surface 701a is dip plane, forms on whole of the one side that it possesses at optical element 701, and the optical axis of crosscut convex lens 701b obliquely.
[formerly technical literature]
[patent documentation]
[patent documentation 1] Japanese kokai publication hei 5-273444 communique
[summary of invention]
[problem that invention will solve]
When by impact briquetting to patent documentation 1 in disclosed optical element while carrying out moulding, such problem is filled in the bight that exists optics raw material to be difficult to become with other face to reflecting surface.
Figure 10 manufactures the key diagram of disclosed optical element in patent documentation 1 by impact briquetting.When the impact briquetting of optical element 701, as shown in Figure 10 (a), optics raw material 705, after being heated to softening temperature, carries out punching press by mold 706 and bed die 707 from upper and lower (Z) direction.
Mold 706 has the dip plane 706a corresponding with reflecting surface 701a, and bed die 707 has the lens face 707b corresponding with convex lens 701b.As shown in Figure 10 (b), mold 706 by the direction with dip plane 706a quadrature, be that the pressure 708 of accompanying drawing lower right comes optics raw material 705 imposed loads.In addition, bed die 707 by the direction with lens face 707b quadrature, be that the pressure 709 of (Z2) direction on accompanying drawing comes optics raw material 705 imposed loads.
Due to mold 706 by optics raw material 705 to accompanying drawing lower right imposed load, so optics raw material 705 is difficult to fill to accompanying drawing upper right.That is, be difficult to fill optics raw material 705 to being reflected the bight 701d that is positioned at accompanying drawing upper right that face 701a and smooth face 701c clip, thus the insufficient formability of optical element 701.
Especially in the situation that optics raw material 705 is frit, owing to carrying out impact briquetting not reaching under the soft state that remains hardness of melting, so optics raw material 705 is difficult to be filled into bight 701d.In addition, as shown in Figure 9, due to the shape for the optical element 701 that attenuates to front end, even so optics raw material 705 the most difficult to the filling of part that is also positioned at front end in the 701d of bight, the mouldability of this part especially becomes problem.
In addition, as shown in Figure 9, form on whole of the one side that reflecting surface 701a possesses at optical element 701.Therefore, reflecting surface 701a has wide area, thereby is difficult to form the face of good forming ability.
Summary of the invention
The present invention considers such problem and makes, and its object is to provide the optical element of the direct of travel of the change light that a kind of punching formation property is good.
[for solving the means of problem]
Optical element of the present invention changes the direct of travel of light, it is characterized in that, described optical element possesses the profile of column, and the end a side of described column possesses first surface, end the opposing party of described column possesses second, and, on described first surface, be formed with the light-focusing function face that light is assembled, on described second, be formed with light direct of travel change face, the optical axis of light-focusing function face described in this light direct of travel change face tilt ground crosscut, and change the direct of travel of the light of being assembled by described light-focusing function face, described smooth direct of travel change face is formed in the part of described second.
Light-focusing function is assembled in the face of the light inciding on optical element, and light direct of travel change face changes the direct of travel of the light of this convergence.And light direct of travel change face is formed on the face with light-focusing function face opposition side, the diameter of the light of therefore assembling on light direct of travel change face reduces.
Therefore, can reduce the area of light direct of travel change face, thereby light direct of travel change face can be formed in the part of second.In addition, can reduce take near the volume of light direct of travel change face surperficial light direct of travel change face.Therefore, when optical element is carried out to impact briquetting, fill difficult bight and diminish, the mouldability of optical element becomes good thus.And, because the periphery from light direct of travel change face is supplied with optics raw material fully near light direct of travel change the of face, thus light direct of travel change face by good forming ability form.
Therefore,, according to the present invention, can provide the optical element of the direct of travel of the change light that punching formation property is good.
Preferably described smooth direct of travel change face is the reflecting surface that the light to being assembled by described light-focusing function face reflects.Because light direct of travel change face is reflecting surface, therefore by the light of being assembled by light-focusing function face is reflected, thereby can change its direct of travel.
Preferably the described smooth direct of travel change normal of face and the optical axis of described light-focusing function face is more than critical angle at described light-focusing function face side angulation.If such form, there is total reflection in the light of being assembled by light-focusing function face to the incident of light direct of travel change face on light direct of travel change face.
Therefore,, when optical element of the present invention is equipped on to the optical module that possesses photo detector, can realize the good optical bond of efficiency of the light that incides on optical element and photo detector.
Preferred described the opposing party's end possesses and is formed with the teat of described second and is connected the 3rd that arranges with described teat, described the 3rd with along with leaving and tilt to the near mode of described first surface side joint from described teat.
If such form, is pressing when optical element is carried out to impact briquetting optics raw material with mould, mould possesses the recess corresponding with teat and towards the dip plane of recess side.Therefore,, when the mold compresses optics raw material, the optics raw material having softened is pressed to recess towards the dip plane of recess side.Therefore, optics raw material is easily filled to recess, and the mouldability of teat and the light direct of travel change face that forms on teat is better.
Preferred described optical element at least has two described the 3rd, and two described the 3rd central shafts with respect to described teat are arranged on symmetric position.
If such form, with mould, optics raw material is being pressed when optical element is carried out to impact briquetting, mould roughly possesses the recess corresponding with teat in central authorities, and towards at least two dip plane of recess side with respect to the central shaft arrangement of recess in symmetric position.
Consequently, when optics raw material is carried out to impact briquetting, at least two dip plane mutually in the face of and to optics raw material the central shaft imposed load to recess.Consequently, optics raw material is easily filled into recess side.Therefore, to the recess that is formed with the pattern corresponding with light direct of travel change face, fill fully optics raw material, and from filling equably, therefore can realize the better optical element of punching formation property around.
[invention effect]
According to the present invention, can provide the optical element of the direct of travel of the change light that a kind of punching formation property is good.
Accompanying drawing explanation
Fig. 1 is the front view of the optical element in the first embodiment.
Fig. 2 cuts open and the cut-open view observed from the direction of arrow along the A-A line shown in Fig. 1.
Fig. 3 is the figure of the explanation light direct of travel change face situation that is fully reflecting surface.
Fig. 4 is the key diagram of the manufacture method of the optical element in the first embodiment.
Fig. 5 is the explanation sketch of the optical module of the first embodiment.
Fig. 6 is the cut-open view of the optical element in the second variation.
Fig. 7 is the front view of the optical element in the 3rd variation.
Fig. 8 is the cut-open view of the optical element in the second embodiment.
Fig. 9 is the sketch of disclosed optical module in patent documentation 1.
Figure 10 manufactures the key diagram of disclosed optical element in patent documentation 1 by impact briquetting.
[symbol description]
1 optical element
2 columns
3 first surfaces
3a light-focusing function face
4 second
4a light direct of travel change face
4b normal
4c angle
5 teats
The central shaft of 5a teat
6,6a, 6b, 6c, 6d are the 3rd
7 optical axises
8 depressed parts
The central shaft of 8a depressed part
20 optical modules
21 optical fiber
22 photo detectors
22a sensitive surface
23 installation base plates
23a upper surface
Embodiment
Below, along accompanying drawing, explain the embodiment of optical element of the present invention.It should be noted that, in order to make to illustrate easy understanding, the very little method of each accompanying drawing is suitably changed and illustrated.
< the first embodiment >
Fig. 1 is the front view of the optical element in the first embodiment.Fig. 2 cuts open and the cut-open view observed from the direction of arrow along the A-A line shown in Fig. 1.
The profile of the column 2 that as shown in Figure 1 and Figure 2, optical element 1 Formation cross-section of present embodiment is essentially rectangular.As shown in Figure 2, optical element 1 in a side's of column 2 end, be that the end on accompanying drawing right side (Y2 direction) has first surface 3.And on first surface 3, the light-focusing function face 3a that light is assembled forms from first surface 3 to the outstanding aspherical shape of foreign side.
Light-focusing function face 3a is defined as has the face that mode that the light that makes to incide on light-focusing function face 3a focuses on from the position to regulation restrains the effect of (convergence).
According to present embodiment, light-focusing function face 3a is aspherical shape, but is not defined in this.Light-focusing function face 3a can be also spherical shape.In addition, light-focusing function face 3a can also be dull and stereotyped micro lens or diffraction grating.
And the 3rd 6 forms in the mode arranging that is connected with teat 5.By two face 6a, 6b to tilt to the near mode of first surface 3 side joints along with leaving teat 5, formed for the 3rd 6.In addition, column 2 has side 2a between a side end and the opposing party's end, and the distance between light-focusing function face 3a and light direct of travel change face 4a can be suitably set.
And as shown in Figure 1 and Figure 2, two the 3rd 6a, 6b are arranged on symmetric position with respect to the central shaft 5a of the teat 5 shown in Fig. 2.That is, with respect to central shaft 5a, in the position of accompanying drawing upper and lower (Z direction), be provided with in couples two the 3rd 6a, 6b.Central shaft 5a is the central shaft with the cross section of optical axis 7 quadratures of teat 5.That is, central shaft 5a is defined as the central point of profile of the teat 5 when observing from optical axis 7 directions and the straight line parallel with optical axis 7.
The light that incide light optical element 1 from outside, incides on light-focusing function face 3a is assembled and is entered towards second 4 skidding by light-focusing function face 3a.And light direct of travel change face 4a arranges in the mode of the optical axis 7 of crosscut light-focusing function face 3a obliquely.Therefore, the light of being assembled by light-focusing function face 3a incide light direct of travel change face 4a upper after, by the 4a reflection of light direct of travel change face, its direct of travel is changed.
Light direct of travel change face 4a is defined as to have and makes to incide the face that the effect of refraction or reflection occurs for mode that the light on light direct of travel change face 4a advances with the different direction of the direct of travel to from incident light.
In the present embodiment, light direct of travel change face 4a plays a role as radiative reflecting surface.Therefore, the reflectivity of expectation light direct of travel change face 4a is high.Therefore the light on the light direct of travel change face that the incides 4a in the light of, being assembled by light-focusing function face 3a is arranged to carry out total reflection by light direct of travel change face 4a.
Light is n from refractive index
1material to refractive index, be n
2material incident time the critical angle θ of total reflection as (1) formula, represent.
θ＝arcsin(n
2/n
1)·····(1)
And, from refractive index n
1material to refractive index n
2the incident angle of light of material incident be critical angle θ when above, cause the total reflection of light.
Fig. 3 is the figure of the explanation light direct of travel change face situation that is fully reflecting surface.As shown in Figure 3, the normal 4b of light direct of travel change face 4a and the optical axis 7 of light-focusing function face 3a is the incident angle of the light on the light direct of travel change face that the incides 4a in the light of being assembled by light-focusing function face 3a at light-focusing function face 3a side angulation 4c.
In the present embodiment, the frit that the optics raw material of optical element 1 is light transmission, optical element 1 is arranged in air.In addition, the refractive index of optical element 1 is roughly 1.60 left and right, and the refractive index of air is roughly 1.00.When these value substitution (1) formulas are calculated, critical angle θ is 38.7 °.The incident angle of the light of present embodiment is that angle 4c is arranged to large 45 ° than critical angle θ (38.7 °).Therefore, the light on the light direct of travel change face that the incides 4a in the light that light-focusing function face 3a assembles forms roughly the angle of 90 ° with respect to optical axis 7 and is totally reflected.
In the present embodiment, optical element 1 consists of frit, but is not defined in this.Optical element 1 also can be formed by the resin raw material of light transmission.And, can selective refraction rate be roughly the resin raw material of 1.60 left and right, now, critical angle θ can be also 38.7 ° of left and right.
In the present embodiment, more than angle 4c is set to critical angle θ, but be not defined in this.For example, by evaporation etc., on the surface of light direct of travel change face 4a, form the metallic reflective coating of aluminium or silver etc., thus also can be using light direct of travel change face 4a as reflecting surface.
Like this, the light inciding on optical element 1 is assembled by light-focusing function face 3a, and advancing in convergence limit, limit and and changes face 4a incident to light direct of travel.Therefore the sectional area that, incides the light on optical element 1 dwindles when to light direct of travel change face 4a incident.Therefore,, by being such form, the area of light direct of travel change face 4a can be reduced to the sectional area degree that incides the light on light direct of travel change face 4a.
Light direct of travel change face 4a is formed on and is formed with on second 4 of first surface 3 opposition sides of light-focusing function face 3a.Therefore, can set into more longways the plain edge being mapped on optical element 1 and assemble the light path of advancing in limit.Consequently, the sectional area that incides the light on optical element 1 further dwindles when light direct of travel changes face 4a incident.Therefore, can further reduce the area of light direct of travel change face 4a.
Like this, owing to can reducing the area of light direct of travel change face 4a, therefore as shown in Figure 2, a part for the face that light direct of travel change face 4a forms on can the end as the opposing party at column 2 arranges.And the area of light direct of travel change face 4a is set littlely than the area of light-focusing function face 3a.
Owing to can reducing the area of light direct of travel change face 4a, therefore can reduce to take near the volume of light direct of travel change face 4a surperficial light direct of travel change face 4a, can reduce the volume of teat 5.
As described later, optical element 1 is manufactured by impact briquetting.When this impact briquetting, when near volume light direct of travel change face 4a, be the volume of teat 5 while reducing, the frit of the formation teat 5 of supplying with from the periphery of teat 5 becomes amount relatively fully.Consequently, light direct of travel change face 4a by good forming ability ground, be that the precision such as flatness, angle of inclination realize well.
Then, the manufacture method of the optical element 1 in present embodiment is described.Fig. 4 is the key diagram of the manufacture method of the optical element in the first embodiment.
In the operation shown in Fig. 4 (a), prepare punch forming device 50.Punch forming device 50 has body membrane 53, mold 51, bed die 52 and well heater 54.And mold 51 possesses the lens shape face 51a corresponding with the light-focusing function face 3a shown in Fig. 2.In addition, bed die 52 possesses the shape corresponding with the teat 5 shown in Fig. 2 and the 3rd 6.
Bed die 52 possesses the recess 52a corresponding with teat 5 in substantial middle, possesses the first dip plane 52b corresponding with light direct of travel change face 4a on recess 52a.And, possess and two the second dip plane 52c and the 3rd dip plane 52d that the 3rd 6a, 6b are corresponding.
And the second dip plane 52c and the 3rd dip plane 52d tilt to uprise towards periphery from recess 52a, and are arranged on symmetric position with respect to the central shaft of recess 52a, with respect to the central shaft of recess 52a, in the position of accompanying drawing left and right, arrange in pairs.Therefore, the second dip plane 52c and the 3rd dip plane 52d with they facing to recess 52a side, towards recess 52a side and opposed facing mode arranges.
Then,, in the operation shown in Fig. 4 (b), the frit 55 that forms optical element 1 is packed in body membrane 53.Then, by well heater 54, frit 55 is heated to softening temperature.
Then, in the operation shown in Fig. 4 (c), by mold 51 and bed die 52 from upper and lower punching press frit 55.Consequently, the shape transferred thereon of mold 51 and bed die 52, to frit 55, is formed to optical element 1 thus.
Then, in the operation shown in Fig. 4 (d), by the dump of well heater 54 and be cooled to regulation temperature.Then, mold 51 and bed die 52 are extracted from body membrane 53, optical element 1, from mold 51 and bed die 52 somatotypes, is manufactured to optical element 1 thus.
Like this, optical element 1 is manufactured by utilizing 52 pairs of frits of mold 51 and bed die 55 to carry out the one-body molded of punching press.
As mentioned above, in the present embodiment, as shown in Figure 2, can reduce the area of light direct of travel change face 4a, therefore can reduce near the volume of light direct of travel change face 4a, be the volume of teat 5.
When the volume hour of teat 5, the volume of the recess 52a corresponding with teat 5 is also little.Therefore,, when impact briquetting, near the amount of the frit 55 having softened recess 52a becomes amount relatively fully with respect to the volume of recess 52a.Consequently, by mold 51 and bed die 52, carry out punching press, the frit 55 having softened thus is fully supplied with to recess 52a.
Owing to can reducing the area of light direct of travel change face 4a, so a part for the face that forms on can the end as the opposing party at column 2 of light direct of travel change face 4a arranges.Therefore, when impact briquetting, the frit 55 that can soften to surround the mode setting of recess 52a.Consequently, by mold 51 and bed die 52, carry out punching press, the frit 55 having softened is thus from around supplying with equably to recess 52a.
Therefore, light direct of travel change face 4a by good forming ability ground, be that the precision such as flatness, angle of inclination realize well.When the precision of flatness is good, the convergence of light is good.In addition, when the precision at angle of inclination is good, catoptrical angle precision is good.Therefore,, when the optical element of present embodiment is equipped on to the optical module that possesses photo detector, can realize the light that incides on optical element and the good light joint efficiency of photo detector.
In the present embodiment, as shown in Fig. 4 (a), opposed facing mode forms with the recess 52a side of their shape facing to depression for the second dip plane 52c and the 3rd dip plane 52d.Therefore, when the frit 55 having softened by mold 51 and bed die 52 punching presses, the second dip plane 52c and the 3rd dip plane 52d towards recess 52a side to frit 55 imposed loads that softened.Then, the frit 55 having softened is pressed in the recess 52a of shape of depression.Therefore, the frit 55 having softened is easily supplied with to recess 52a, and the mouldability of light direct of travel change face 4a becomes better.
Compare with the face of wide area, the mouldability of the face of small size, processability are relatively good.And, to compare with the circumference of mould, mouldability, the processability of the pattern arranging at central portion are good.In the present embodiment, as shown in Figure 2, can reduce the area of light direct of travel change face 4a, so a part for the face that forms on can the end as the opposing party at column 2 of light direct of travel change face 4a arranges.Therefore, the first little dip plane 52b of the area corresponding with the second optical function face 4a can be arranged on to the central authorities of bed die 52 as shown in Fig. 4 (a).
Yet, as shown in Figure 9, form on whole of the one side that in patent documentation 1, disclosed reflecting surface 701a possesses at optical element 701.Therefore, reflecting surface 701a has the area wider than present embodiment, and reflecting surface 701a is in whole formation of one side, thereby is difficult to form mouldability, face that processability is good.
To carrying the optical module of the optical element 1 of present embodiment, describe.Fig. 5 is the explanation sketch of the optical module of the first embodiment.As shown in Figure 5, the optical module 20 that carries optical element 1 is at the upper surface 23a of installation base plate 23 fixing optical element 1.Optical fiber 21 so that the optical axis of optical fiber 21 mode consistent with the optical axis of light-focusing function face 3a be fixed on abreast on the upper surface 23a of installation base plate 23.
In addition, the mode that the photo detector 22 such as photodiode becomes (Z1 direction) side under the accompanying drawing of light direct of travel change face 4a with its sensitive surface 22a is fixed on the upper surface 23a of installation base plate 23.
When being such structure, the light penetrating from optical fiber 21 is to light-focusing function face 3a incident, and limit is assembled to light direct of travel change face 4a incident by light-focusing function face 3a in limit.As shown in Figure 3, the normal 4b of light direct of travel change face 4a tilts 45 ° with respect to the optical axis 7 of light-focusing function face 3a, therefore incides light on light direct of travel change face 4a and with respect to optical axis 7, forms roughly the angle of 90 ° and be totally reflected.Therefore, as shown in Figure 5, the sensitive surface 22a of the photo detector 22 that the light being totally reflected arranges to (Z1 direction) side under the accompanying drawing at light direct of travel change face 4a assembles.
In the optical module 20 of present embodiment, optical element 1 and photo detector 22 are fixed on the upper surface 23a of installation base plate 23.In addition, optical fiber 21 is fixed on the upper surface 23a of installation base plate 23 abreast.Like this, the optics that forms optical module 20 be take to upper surface 23a and be fixed as reference field, so the contraposition of optics is easy, can access high-precision optical property.
In the optical module 20 of present embodiment, by optical element 1, photo detector 22 and optical fiber 21 single settings respectively, but be not defined in this.Also can optical element 1, photo detector 22 and optical fiber 21 be arranged respectively a plurality of.
< the first variation >
Then, the first variation of the first embodiment is described.This variation is that the angle 4c shown in Fig. 3 is set to the situation below critical angle θ.In this case, a side of inciding in the light on light direct of travel change face 4a is reflected by light direct of travel change face 4a, and advances to the downside shown in Fig. 2 (Z1 direction).In addition, if suitably select the refractive index of optical element 1, can make to incide a side in the light on light direct of travel change face 4a and with respect to optical axis 7, form roughly the angle of 90 ° as shown in Figure 5 and reflect, photo detector 22 is accepted.
In addition, incide the other direction direction refraction different from the direction of optical axis 7 and photo detector 22 in the light on light direct of travel change face 4a and advance.Like this, the change of the light direct of travel in this variation face 4a can change the direct of travel of the light of being assembled by light-focusing function face 3a by refraction.
According to this variation, the light intensity by birefringence monitors, thereby as shown in Figure 5, can adjust the light intensity penetrating from optical fiber 21.That is, the light that the light-emitting components such as semiconductor laser penetrate is to optical fiber 21 incidents, and the light of this incident penetrates from optical fiber 21.From the light of these optical fiber 21 ejaculations to light-focusing function face 3a incident, and by light direct of travel change face 4a, its part is reflected and accepted by photo detector 22, other light transmission light direct of travel change face 4a.
And, supervision photo detector is set on the direct of travel of the light seeing through, monitor the light intensity that this sees through, can adjust the ejaculation intensity that penetrates the light-emitting component of light to optical fiber 21.Like this, according to this variation, even for example because of the ejaculation Strength Changes of temperature variation light-emitting component, photo detector 22 also can be accepted the light of suitable intensity all the time.
< the second variation >
According to the first embodiment, as shown in Figures 1 and 2, the 3rd 6 consists of two face 6a, 6b.And the central shaft 9a of optical element 1 is not consistent with the central shaft 5a of teat 5, and consistent with the optical axis 7 of light-focusing function face 3a.Therefore, the area of two the 3rd 6a, 6b of central shaft 5a of teat 5 is roughly set at center mutually different.
Fig. 6 is the cut-open view of the optical element in the second variation.As shown in Figure 6, this variation is arranged to consistent by the central shaft 9a of the central shaft 5a of teat 5 and optical element 1.And, the optical axis 7 of light-focusing function face 3a is staggered from the central shaft 9a of optical element 1 (Z2 direction) side to accompanying drawing.Therefore, two the 3rd 6a, 6b are configured in symmetric position with respect to the central shaft 5a of teat 5, and their area is consistent with each other.
When the 3rd 6a and the 3rd 6b are configured in symmetric position with respect to the central shaft 5a of teat 5, and when their area is consistent with each other, as shown in Fig. 4 (a), the second dip plane 52c and the 3rd dip plane 52d are also configured in symmetric position with respect to the central shaft of recess 52a, and their area is consistent with each other.Therefore, when carrying out impact briquetting, optics raw material with respect to the central shaft of recess 52a by the pressure imposed load with symmetrical.Therefore, teat forms in heterogeneity, therefore can realize the better optical element of mouldability.
< the 3rd variation >
Fig. 7 is the front view of the optical element in the 3rd variation.In this variation, in the mode identical with the first embodiment, in a side's of column end, form light-focusing function face, and form teat in the opposing party's of column end.As shown in Figure 7, teat 5 is only positioned at the opposing party's of column the central portion of end.In the mode arranging that is connected with teat 5, be formed on teat 5 around for the 3rd 6.By four face 6a, 6b, 6c, 6d to tilt to a side's of column the approaching mode in end along with leaving from teat 5, formed for the 3rd 6.
This variation is same with the second variation, and the central shaft of teat 5 is arranged to consistent with the central shaft of optical element 1.
The border that four the 3rd 6a, 6b, 6c, 6d join mutually forms the boundary line that the part by straight line forms.Each the 3rd 6a, 6b, 6c, 6d consist of the parallel face in two boundary lines with joining respectively.The 3rd 6a and the 3rd 6b are arranged on symmetric position with respect to the central shaft of teat 5.That is, the 3rd 6a and the 3rd 6b are with respect to the central shaft of teat 5 and arrange in pairs in the upper and lower position of accompanying drawing.In addition, the 3rd 6c and the 3rd 6d are arranged on symmetric position with respect to the central shaft of teat 5.That is, the 3rd 6c and the 3rd 6d arrange in the position of accompanying drawing left and right in pairs with respect to the central shaft of teat 5.
Light direct of travel change face 4a shown in Area Ratio Fig. 1 of the light direct of travel change face 4a of this variation is little.Therefore, compare with the light direct of travel change face 4a shown in Fig. 1, the light direct of travel change face 4a of this variation by mouldability more well, be flatness, angle of inclination etc. more precision realize well.
< the second embodiment >
Fig. 8 is the cut-open view of the optical element in the second embodiment.As shown in Figure 8, only the structure of the periphery of light direct of travel change face 4a is different for the optical element 40 of present embodiment and the optical element 1 of the first embodiment.That is, Fig. 2 and Fig. 8 are compared known, on optical element 40, there is no teat 5 (illustrating) in Fig. 2, and there is the depressed part 8 that forms concavity.The inner peripheral surface of depressed part 8 consists of two sides, and it simultaneously forms light direct of travel change face 4a.
Light-focusing function face 3a and the first embodiment similarly form.In the mode arranging that is connected with depressed part 8, form for the 3rd 6.By two face 6a, 6b to tilt to the near mode of first surface 3 side joints along with leaving from depressed part 8, formed for the 3rd 6.And two face 6a, 6b of inclination are configured in symmetric position with respect to the central shaft 8a of depressed part 8.Wherein, the central shaft 8a of depressed part 8 is defined as the central point of profile of the depressed part 8 when observing from optical axis 7 directions and the straight line parallel with optical axis 7.
The light direct of travel change face 4a of present embodiment is reflecting surface, and it is the optical axis 7 of crosscut light-focusing function face 3a obliquely, and plays a role to change the mode of the direct of travel of the light of being assembled by light-focusing function face 3a.In addition, the normal of light direct of travel change face 4a and the optical axis 7 of light-focusing function face 3a more than light-focusing function face 3a side angulation is set to critical angle.
The area of the light direct of travel change face 4a of present embodiment can similarly reduce with the first embodiment.Therefore, 4a is also same with the first enforcement side for the light direct of travel of present embodiment change face, by good forming ability ground, be that the precision such as flatness, angle of inclination realize well.
Claims (5)
1. an optical element, changes the direct of travel of light, it is characterized in that,
Described optical element possesses the profile of column, and possesses first surface in a side's of described column end, in the opposing party's of described column end, possesses second, and,
On described first surface, be formed with the light-focusing function face that light is assembled,
On described second, be formed with light direct of travel change face, the optical axis of light-focusing function face described in this light direct of travel change face tilt ground crosscut, and change the direct of travel of the light of being assembled by described light-focusing function face,
Described smooth direct of travel change face is formed in the part of described second.
2. optical element according to claim 1, is characterized in that,
Described smooth direct of travel change face is the reflecting surface that the light to being assembled by described light-focusing function face reflects.
3. optical element according to claim 2, is characterized in that,
What described smooth direct of travel changed the normal of face and the optical axis of described light-focusing function face is more than critical angle at described light-focusing function face side angulation.
4. according to the optical element described in any one in claims 1 to 3, it is characterized in that,
Described the opposing party's end possesses and is formed with the teat of described second and is connected the 3rd that arranges with described teat,
Described the 3rd with along with leaving and tilt to the near mode of described first surface side joint from described teat.
5. optical element according to claim 4, is characterized in that,
Described optical element at least has two described the 3rd, and two described the 3rd central shafts with respect to described teat are arranged on symmetric position.
Applications Claiming Priority (2)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP2012-184681 | 2012-08-24 | ||
| JP2012184681A JP5959366B2 (en) | 2012-08-24 | 2012-08-24 | Optical element |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN103630984A true CN103630984A (en) | 2014-03-12 |
| CN103630984B CN103630984B (en) | 2015-07-08 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201310363416.5A Active CN103630984B (en) | 2012-08-24 | 2013-08-20 | Optical element |
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| Country | Link |
|---|---|
| JP (1) | JP5959366B2 (en) |
| CN (1) | CN103630984B (en) |
Citations (5)
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| US5555328A (en) * | 1995-08-14 | 1996-09-10 | Xerox Corporation | Total internal reflection knife edge |
| CN1334467A (en) * | 2001-08-04 | 2002-02-06 | 珠海光联通讯技术有限公司 | Rod-shaped lens with prism |
| JP2003161812A (en) * | 2001-11-29 | 2003-06-06 | Asahi Glass Co Ltd | Circular column lens with slant face |
| US20050063074A1 (en) * | 2003-08-25 | 2005-03-24 | Alps Electric Co., Ltd. | Holder and optical element device and method for fabricating the same |
| CN101589317A (en) * | 2007-01-25 | 2009-11-25 | 住友电工超效能高分子股份有限公司 | Optical sheet, and mounting method and optical module using the optical sheet |
Family Cites Families (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2003107276A (en) * | 2001-10-01 | 2003-04-09 | Matsushita Electric Ind Co Ltd | Optical fiber collimator, lens for optical fiber collimator and optical coupling parts |
| US6956995B1 (en) * | 2001-11-09 | 2005-10-18 | Silicon Light Machines Corporation | Optical communication arrangement |
| JP2004246279A (en) * | 2003-02-17 | 2004-09-02 | Seiko Epson Corp | Optical module and its manufacturing method, optical communication device, optical and electric mixed integrated circuit, circuit board, electronic equipment |
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2012
- 2012-08-24 JP JP2012184681A patent/JP5959366B2/en active Active
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2013
- 2013-08-20 CN CN201310363416.5A patent/CN103630984B/en active Active
Patent Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US5555328A (en) * | 1995-08-14 | 1996-09-10 | Xerox Corporation | Total internal reflection knife edge |
| CN1334467A (en) * | 2001-08-04 | 2002-02-06 | 珠海光联通讯技术有限公司 | Rod-shaped lens with prism |
| JP2003161812A (en) * | 2001-11-29 | 2003-06-06 | Asahi Glass Co Ltd | Circular column lens with slant face |
| US20050063074A1 (en) * | 2003-08-25 | 2005-03-24 | Alps Electric Co., Ltd. | Holder and optical element device and method for fabricating the same |
| CN101589317A (en) * | 2007-01-25 | 2009-11-25 | 住友电工超效能高分子股份有限公司 | Optical sheet, and mounting method and optical module using the optical sheet |
Also Published As
| Publication number | Publication date |
|---|---|
| JP5959366B2 (en) | 2016-08-02 |
| CN103630984B (en) | 2015-07-08 |
| JP2014041311A (en) | 2014-03-06 |
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