CN104423005A - Lens provided with lens barrel - Google Patents
Lens provided with lens barrel Download PDFInfo
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- CN104423005A CN104423005A CN201410405938.1A CN201410405938A CN104423005A CN 104423005 A CN104423005 A CN 104423005A CN 201410405938 A CN201410405938 A CN 201410405938A CN 104423005 A CN104423005 A CN 104423005A
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- lens
- lens barrel
- barrel
- groove
- thermal stress
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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
-
- 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
- G02B7/028—Mountings, adjusting means, or light-tight connections, for optical elements for lenses with means for compensating for changes in temperature or for controlling the temperature; thermal stabilisation
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- Physics & Mathematics (AREA)
- General Physics & Mathematics (AREA)
- Optics & Photonics (AREA)
- Lens Barrels (AREA)
Abstract
The object of the invention is to provide a lens provided with a lens barrel capable of relieving the uneven thermal stress applied to the lens. According to the invention, the lens (30) is integrated with the lens barrel (20), and the lens (10) provided with the lens barrel is disposed on a substrate. The lens (10) provided with the lens is characterized in that the lens (30) is about in the shape of a circle when being observed from the direction of the optical axis (36), and the lens barrel (20) is provided with a base part (21) used for maintaining the lens (30), a handle part (22) integrated with the base part (21). The base part (21) is provided with a carrying surface (21a), side surfaces (21b,21c)connected with the carrying surface (21a). the side surfaces (21b,21c) are provided with a plurality of grooves (25a-25d).
Description
Technical field
The present invention relates to a kind of lens with lens barrel, particularly, relate to a kind of lens with lens barrel with the lens barrel of singular configuration.
Background technology
As opticses such as the electronic equipment such as portable product or projector and optical communication equipments, use the lens with lens barrel.Patent documentation 1 discloses, the lens with lens barrel used in conjunction with the optical assembly between light-emitting component and optical cable or optical cable.
Figure 10 represents the lens with lens barrel of the conventional example recorded in patent documentation 1.Figure 10 represents that the lens 110 with lens barrel of conventional example are fixed on the stereographic map of the situation on base station 141 by the mode of laser bonding.
As shown in Figure 10, the lens 110 with lens barrel of conventional example are configured to have: the lens barrel 121 of lens 130, supporting lens 130.And lens barrel retaining member 142 is fixed on base station 141 by carrying out laser bonding at point 144 place, the lens 110 with lens barrel are fixed on lens barrel retaining member 142 by carrying out laser bonding at point 145 place.
When being fixed on lens barrel retaining member 142 by the lens 110 with lens barrel, utilize the location of lens 110 on xyz direction that retainer 143 carries out with lens barrel.As shown in Figure 10, lens barrel 121 is provided with handle portion 121a outstanding upward, and under the state of being located by retainer 143 holding hand shank 121a, the lens 110 with lens barrel are fixed on lens barrel retaining member 142 by laser bonding.Thus, lens 110 precision with lens barrel of conventional example is located well and is fixed on base station 141.
[at first technical literature]
[patent documentation]
Patent documentation 1: Japanese Unexamined Patent Publication 9-113756 publication
When being fixed on lens barrel retaining member 142 by the lens 110 with lens barrel of conventional example by laser bonding etc., heat is applied to the lens 110 with lens barrel, therefore, because of the thermal expansivity of lens 130 and lens barrel 121 difference and produce thermal stress.And the lens barrel 121 of the lens 110 with lens barrel of conventional example is in the singular configuration with handle portion 121a, and the thermal stress being therefore provided with the thicker position of the wall thickness of handle portion 121a increases, and the thermal stress at the position that wall thickness is thinner reduces.Therefore, there is the problem of the thermal stress inequality applied from lens barrel 121 pairs of lens 130.In this case, have that thermal stress concentrates on the local of lens 130 and lens 130 are distorted unevenly, thus there is the possibility of the deteriorations such as the polarized light property of lens 130.
And, in the manufacturing process of the lens 110 with lens barrel, when making lens 130 be shaped integratedly with lens barrel 121, in order to keep lens 130 by lens barrel 121, and in lens barrel 121, use the material slightly larger than the coefficient of thermal expansion of lens 130.And as shown in Figure 10, lens barrel 121, in the singular configuration with handle portion 121a, therefore exists after heating lens barrel 121 and lens 130 and make them integrally formed, applies the problem of uneven thermal stress from lens barrel 121 pairs of lens 130.Thus exist because of uneven stress when lens 130 are shaped, thus there is the possibility of the deterioration of the polarized light property producing lens 130.
Summary of the invention
The present invention is for solving above-mentioned problem, its object is to, a kind of lens with lens barrel are provided, it when making lens and lens barrel is integrally formed and when being fixed on base station by the lens with lens barrel by modes such as laser bonding etc., can relax the thermal stress applied lens from the lens barrel of singular configuration uneven.
Of the present invention with in the lens of lens barrel, lens and lens barrel integrally formed, and the described lens with lens barrel are positioned on base station, the feature of the described lens with lens barrel is, described lens are circular when observing from optical axis direction, described lens barrel has the handle portion keeping the base portion of described lens and be wholely set with described base portion, the side that described base portion has mounting surface and is connected with described mounting surface, is formed with multiple groove in described side.
Thus, the position being formed with groove in the side of the base portion of lens barrel is provided with the thin part of wall thickness, and the thermal stress that the thin part of this wall thickness and the part not being provided with groove compare lensing is little.And, groove is set by the side at base portion, makes base portion become easy elastic deformation, therefore, from being provided with handle portion and the lens barrel with singular configuration is disperseed the thermal stress that lens apply.Thus, from lens barrel, the thermal stress inequality that lens apply is relaxed.
Therefore, by lens and lens barrel integrally formed time, when being fixed on base station by the lens with lens barrel by laser bonding etc. etc., thermal stress lens applied from the lens barrel of singular configuration can be relaxed uneven.
Of the present invention with in the lens of lens barrel, be preferably, described groove is also formed at described mounting surface.Thus, because the lens barrel from singular configuration is disperseed by the groove be formed in mounting surface further to the thermal stress that lens apply, therefore, it is possible to it is uneven to relax the thermal stress applied lens from lens barrel further, thus thermal stress homogenising can be made along the periphery of lens barrel.
Of the present invention with in the lens of lens barrel, be preferably, described groove is also formed at described handle portion.Thus, reduce the thermal stress produced in handle portion, thus relax further from the inequality of lens barrel to the thermal stress that lens apply, thermal stress homogenising can be made along the periphery of lens barrel.
Of the present invention with in the lens of lens barrel, preferred described groove is formed in the mode of depth direction towards the optical axis of described lens.Thereby, it is possible to effectively reduce from the component of lens barrel to the direction towards optical axis of the thermal stress that lens apply.
Of the present invention with in the lens of lens barrel, form the bottom of described multiple groove in the position overlapping with the circumference of the imaginary circle larger than the periphery of described lens, described imaginary circle and described lens are concentric circles.Thus, the thermal stress acting on lens from lens barrel depends on the wall thickness of lens barrel, therefore, it is possible to make the stress equilibrium on the direction from lens barrel towards lens at the position being formed with multiple groove.Therefore, it is possible to make the thermal stress that applies lens from lens barrel along the periphery homogenising of lens barrel.
Of the present invention with in the lens of lens barrel, be preferably, extended on the direction that described groove intersects in the periphery with described lens.Thus, from lens barrel, the thermal stress that lens apply is disperseed to the peripheral direction of lens, thus reduce the thermal stress on the direction orthogonal with the periphery of lens, therefore, it is possible to suppress thermal stress uneven.
[invention effect]
According to the lens with lens barrel of the present invention, when making lens and lens barrel is integrally formed, when being fixed on base station by the lens with lens barrel by laser bonding etc. etc., thermal stress lens applied from the lens barrel of singular configuration can be relaxed uneven.
Accompanying drawing explanation
Fig. 1 is the stereographic map of the lens with lens barrel in embodiments of the present invention.
Fig. 2 is the front view of the lens with lens barrel in present embodiment.
Fig. 3 be along the III-III line of Fig. 2 cut open this with the lens of lens barrel and observe from the direction of arrow time cut-open view.
Fig. 4 is front view when being fixed on base station by the lens with lens barrel of present embodiment.
Fig. 5 is the process chart of the manufacture method of lens with lens barrel for illustration of present embodiment.
Fig. 6 (a) is the sectional block diagram of the analog result of the stress distribution of the lens with lens barrel representing embodiment, and Fig. 6 (b) is the sectional block diagram of the analog result of the stress distribution of the lens with lens barrel representing comparative example.
Fig. 7 is the front view of the lens with lens barrel of the first variation of present embodiment.
Fig. 8 is front view when being fixed on base station by the lens with lens barrel of the second variation.
Fig. 9 is the front view of the lens with lens barrel of the 3rd variation.
Figure 10 is the stereographic map of the lens with lens barrel of conventional example.
Symbol description
10 ~ 14 with the lens of lens barrel
20 lens barrels
21 base portions
21a mounting surface
21b, 21c side
21d upper surface
22 handle portion
23a, 23b dip plane
25a ~ 25g groove
Bottom 26a ~ 26g
30,31 lens
32,33 optical surfaces
34 imaginary circle
36 optical axises
41 base stations
42 lens holders
50 building mortions
51 bed dies
52 molds
53,54 loose pieces
55 heating parts
56 lenticular blank
Embodiment
Below, the concrete embodiment of the lens with lens barrel that present invention will be described in detail with reference to the accompanying.It should be noted that, the suitable size ground changing each accompanying drawing represents.
Fig. 1 is the stereographic map of the lens with lens barrel of present embodiment.Fig. 2 is the front view of the lens with lens barrel, and Fig. 3 is the cut-open view of the lens with lens barrel when cutting the lens with lens barrel open along the III-III line of Fig. 2 and observe from the direction of arrow.
As shown in Figures 1 and 2, the lens 10 with lens barrel of present embodiment are configured to be had, lens 30, lens barrel 20.Lens barrel 20 is configured to be had: the handle portion 22 keeping the base portion 21 of lens 30, arrange integratedly with base portion 21.As shown in Figure 3, be provided with along the through through hole in Y1-Y2 direction at the base portion 21 of lens barrel 20, maintain lens 30 in the inside of through hole.The lens barrel one lens be shaped integratedly for making lens 30 and lens barrel 20 with the lens 10 of lens barrel of present embodiment.
As shown in Figure 3, the direction (Y1-Y2 direction) being provided with through hole of lens barrel 20 has the optical axis 36 of lens 30, the face opposed on Y1-Y2 direction of lens 30 is formed with the optical surface 32,33 of aspheric surface or sphere respectively.Lens 30 have the optical function making to become directional light by the light of optical surface 32,33 or make to be gathered in by the light of optical surface 32,33 light accepting part etc.And as shown in Figure 2, when observing from optical axis 36 direction, lens 30 are formed as circular.
As shown in Figures 1 and 2, base portion 21 side 21b, 21c of there is mounting surface 21a and being connected with mounting surface 21a.Side 21b, side 21c are parallel to each other, and, generally perpendicularly arrange with mounting surface 21a.And be formed with upper surface 21d in the opposition side of mounting surface 21a, handle portion 22 is formed highlightedly from upper surface 21d.As shown in Figure 2, lens barrel 20 has handle portion 22, and when observing from optical axis 36 direction, is formed as asymmetrical singular configuration relative to the center (optical axis 36) of lens 30.
As shown in Figure 2, in present embodiment with in the lens 10 of lens barrel, be formed with multiple groove 25a, 25b at the side 21b of base portion 21, be formed with multiple groove 25c, 25d at side 21c.In addition, be formed with groove 25e, 25f at mounting surface 21a, be formed with groove 25g in handle portion 22.
Each groove 25a ~ 25g is formed in the mode of depth direction towards lens 30 respectively, groove 25a, 25b have depth direction on the direction substantially vertical with side 21b, groove 25c, 25d have depth direction on the direction substantially vertical with side 21c, and groove 25e, 25f have depth direction on the direction substantially vertical with mounting surface 21a.And, as shown in Figure 1, each groove 25a ~ 25g is formed in such a way, namely, to be formed extended at both sides on the direction (Y1-Y2 direction) vertical with the bottom 26a ~ 26g of each groove 25a ~ 25g with the direction that the periphery of lens 30 intersects, namely with the almost parallel direction of optical axis 36 on be formed extended at both sides.
And, as shown in Figure 2, arrange be concentric circles with lens 30 and the imaginary circle 34 larger than the periphery of lens 30 time, be formed with the bottom 26a ~ 26g of multiple groove 25a ~ 25g in the position overlapping with the circumference of imaginary circle 34.It should be noted that, bottom 26a ~ 26g is formed abreast with mounting surface 21a and side 21b, 21c respectively, but is not limited thereto, and also can have such as dip plane or curved surface etc.
In the present embodiment, lens barrel 20 is formed by metals such as stainless steels, such as, formed by the stainless steel of ferrite.Lens barrel 20 is formed by cut, and handle portion 22, each groove 25a ~ 25g etc. also can be formed by cut.And lens 30 are formed by optical glass material such as crown glass ((Co., Ltd.) OHARA manufactures L-BAL35).
As mentioned above, the lens barrel 20 of the singular configuration with handle portion 22 is provided with multiple groove 25a ~ 25g.Thus, the position being formed with groove 25a ~ 25g at the base portion 21 of lens barrel 20 and handle portion 22 is provided with the thin part of wall thickness, thus when being applied with heat to the lens 10 with lens barrel, the thin part of this wall thickness and the part not being provided with groove 25a ~ 25g compare the thermal stress that lens 30 act on and diminish.And by arranging groove 25a ~ 25g, make base portion 21 and handle portion 22 become easy elastic deformation, the thermal stress therefore applied from lens barrel 20 pairs of lens 30 is disperseed.Thus, the thermal stress inequality applied from lens barrel 20 pairs of lens 30 is relaxed.
Particularly, when crown glass is used as lens 30, because photoelastic coefficient is high and comparatively large relative to the deterioration of the extinction ratio of external stress, therefore when being applied with uneven thermal stress to lens 30, the possibility that the deterioration of polarized light property occurs is larger.According to the present embodiment, the thermal stress inequality owing to applying from lens barrel 20 pairs of lens 30 is relaxed, therefore, it is possible to prevent the deterioration of the polarized light property of lens 30.
Therefore, the lens 10 with lens barrel according to the present embodiment, when making lens 30 and lens barrel 20 is integrally formed and when being fixed on base station by the lens 10 with lens barrel by modes such as laser bonding etc., the thermal stress applied from lens barrel 20 pairs of lens 30 of singular configuration can be relaxed uneven.
Fig. 4 is front view when being fixed on base station by the lens with lens barrel of present embodiment.As shown in Figure 4, the lens 10 with lens barrel are being fixed under the state on base station 41, load the ground such as the electronic equipment such as portable product or projector or optical communication equipment use as optical assembly.
As shown in Figure 4, base station 41 is provided with the lens holders 42 of concavity, in the lens holders 42 of concavity, is provided with the lens 10 with lens barrel.When being fixed the lens 10 with lens barrel, under the state of handle portion 22 keeping lens barrel 20 by retaining member 43, the lens 10 with lens barrel are made to move and carry out the location on xyz direction.To make the optical axis 36 of lens 30 as one man position the lens 10 with lens barrel with the light carrying out the light sources such as self-emission device, and be fixed on base station 41.Such as, using the side 21c of base portion 21 as locating surface, make side 21c contact with the sidewall 42b of lens holders 42 and carry out the contraposition on X1-X2 direction, carry out the contraposition on Y1-Y2 direction and Z1-Z2 direction afterwards.Further, side 21b, 21c of base portion 21 are by carrying out laser bonding etc. and being fixed on sidewall 42a, 42b of lens holders 42 at Laser Welding (LBW) contact 44 place.
When being fixed on base station 41 by the lens 10 with lens barrel by laser bonding etc., heat is applied with to the lens 10 with lens barrel.As mentioned above, lens barrel 20 uses stainless steel and other metal materials, and stainless steel and other metal materials has the large thermal expansivity of the glass material that uses than lens 30.Therefore, when being applied with heat when the lens 10 with lens barrel are fixed, due to the difference of thermal expansivity, cause being applied with compression stress from lens barrel 20 pairs of lens 30 at the radial direction of lens 30.And lens barrel 20 has the singular configuration being provided with handle portion 22, and intensively apply heat when the lens 10 with lens barrel are fixed to Laser Welding (LBW) contact 44, the thermal stress therefore produced at lens barrel 20 easily becomes uneven.
The lens 10 with lens barrel according to the present embodiment, the position being formed with groove 25a ~ 25d at side 21b, 21c of the base portion 21 of lens barrel 20 is provided with the thin part of wall thickness, and it is less that the thin part of this wall thickness and other lens barrel 20 part (not forming the part of groove 25a ~ 25d) compare the thermal stress that lens 30 act on.And, groove 25a ~ 25d is set by side 21b, 21c at base portion 21, makes base portion 21 easily elastic deformation.Therefore, the thermal stress dispersion that the lens barrel 20 having singular configuration by being provided with handle portion 22 produces, thus the thermal stress inequality that lens 30 apply is relaxed.
Therefore, the lens 10 with lens barrel according to the present embodiment, when being fixed on base station 41 by the lens 10 with lens barrel by laser bonding etc., can relax the thermal stress applied from lens barrel 20 pairs of lens 30 of singular configuration uneven.
As shown in Figure 4, because laser bonding is carried out on the top of side 21b, 21c at base portion 21, therefore, as long as at least form multiple groove 25a ~ 25d at side 21b, 21c, the effect relaxing thermal stress inequality can just be obtained.In the present embodiment, except side 21b, 21c, be formed with groove 25e, 25f at mounting surface 21a, and be formed with groove 25g in handle portion 22.Thus, by being formed in groove 21e, 21f of mounting surface 21a and being formed in the groove 25g of handle portion 22, the thermal stress produced by the lens barrel 20 of singular configuration is disperseed further.
And as shown in Figure 1, groove 25a ~ 25g is with the direction that the periphery of lens 30 intersects and to be that the direction (Y1-Y2 direction) vertical with the bottom 26a ~ 26g of each groove 25a ~ 25g is upper arranged with extending.Thus, the thermal stress applied from lens barrel 20 pairs of lens 30 is disperseed to the peripheral direction of lens 30, thus the thermal stress on the direction orthogonal with the periphery of lens 30 reduces, and therefore, inhibits thermal stress uneven.
Thus, reliably can disperse the thermal stress applied from lens barrel 20 pairs of lens 30, thus thermal stress homogenising can be made along the periphery of lens barrel 20.
And as shown in Figure 4, with respect to optical axis 36, the imaginary line vertical with mounting surface 21a (the III-III line shown in Fig. 2) is configured to line symmetry to each groove 25a ~ 25g.Thus, the thermal stress applied from the lens barrel 20 pairs of lens 30 of singular configuration is homogenized along the periphery of lens barrel 20.
And, by the bottom 26a ~ 26g of each groove 25a ~ 25g is arranged on the position overlapping with the circumference of imaginary circle 34, because the thermal stress acted on from lens barrel 20 pairs of lens 30 depends on the wall thickness of lens barrel 20, therefore roughly equal at the wall thickness of lens barrel 20 at the position being formed with multiple groove 25a ~ 25g, thus the stress equilibrium from lens barrel 20 towards the direction of lens 30 can be made.Therefore, the thermal stress applied from the lens barrel 20 pairs of lens 30 is along the outer periderm reliably homogenising of lens barrel 20.It should be noted that, in the present embodiment, mounting surface 21a and side 21b, 21c are respectively provided with two groove 25a ~ 25f, but, the shape of the number and width etc. changing groove can be suitable for.
And, utilize the lens holders 42 of concavity in Fig. 4, position as locating surface using the side 21c of base portion 21, but do not limit by special with the localization method of the lens 10 of lens barrel.And the lens 10 with lens barrel are hermetically laser welded at Laser Welding (LBW) contact 44 place of side 21b, 21c, but be suitable for the position of changing Laser Welding (LBW) contact 44 according to the shape of lens holders 42 and localization method, also can obtain same effect.
< is with the manufacture method > of the lens of lens barrel
Fig. 5 is the process chart of the manufacture method of lens with lens barrel for illustration of present embodiment.First, in the operation of Fig. 5 (a), prepare building mortion 50.As shown in Fig. 5 (a), building mortion 50 has bed die 51 and mold 52, is provided with loose piece 53 in bed die 51, is provided with loose piece 54 in mold 52.Bed die 51, mold 52, loose piece 53,54 are set to move in the vertical direction respectively.And the mutually opposing face of loose piece 53,54 is concavity aspheric optics transfer surface 53a, 54a.And, there is heating part 55 in the arranged outside of bed die 51 and mold 52.
Next, as shown in Fig. 5 (b), lens barrel 20 and lenticular blank 56 are supplied in building mortion 50.Now, lens barrel 20 is located and is entrenched in the upper surface recess 51a of bed die 51.And lenticular blank 56 is arranged on the dip plane 23a in the through hole being formed at lens barrel 20.
Then, as shown in Fig. 5 (c), mold 52 is declined, lens barrel 20 is fixed from clamping up and down by mould 52 and bed die 51.Then, heat lens barrel 20 by heating part 55, and lenticular blank 56 is heated to more than softening point, in the present embodiment, be heated to the temperature of more than glass transition point.
Next, as shown in Fig. 5 (d), cramping direction drives loose piece 53 and loose piece 54, by each optics transfer surface 53a, 54a, lenticular blank 56 is pressurizeed.Lenticular blank 56 has been transferred optics transfer surface 53a, 54a, and touches with the inner peripheral surface of the through hole of lens barrel 20.Thus, the lens 30 with aspheric optical surface 32,33 are shaped integratedly with lens barrel 20.Stop heating part 55 afterwards, lens barrel 20 and lens 30 are cooled.
Afterwards, as shown in Fig. 5 (e), by mold 52, loose piece 53 and loose piece 54 respectively to driving up and down, with lens 10 demoulding of lens barrel.
In the present embodiment, the thermal expansivity of lens barrel 20 is made to select the material of lens barrel 20 and lens 30 with being a bit larger tham the thermal expansivity of lens 30, thus, in the operation of each figure of Fig. 5, carrying out lens barrel 20 and lens 30 heating and after cooling, lens 30 being fixed on lens barrel 20.
< embodiment >
Fig. 6 (a) is the sectional block diagram of the analog result of the stress distribution of the lens with lens barrel representing embodiment, and Fig. 6 (b) is the sectional block diagram of the analog result of the stress distribution of the lens with lens barrel representing comparative example.Fig. 6 (a), (b) be, simulate to be heated in the operation shown in Fig. 5 (c) and Fig. 5 (d) 550 DEG C ~ about 600 DEG C and carried out after lens 30 are formed the lens 11 with lens barrel when cooling, embodiment and comparative example with the lens 211 of lens barrel in the result of residual stress.It should be noted that, Fig. 6 (a) and (b) be along the position same with the III-III line shown in Fig. 2 cut open time sectional block diagram.
The lens 11 with lens barrel of the embodiment of Fig. 6 (a) have and the structure identical with the lens 10 of lens barrel shown in Fig. 1 to Fig. 3.And the difference of the lens 211 with lens barrel of the comparative example shown in Fig. 6 (b) is, do not arrange groove 25a ~ 25f, and other material, shape etc. is equal at lens barrel 220 with the lens 11 with lens barrel of the embodiment of Fig. 6 (a).
As shown in Fig. 6 (b), show at the comparative example not being provided with groove with in the lens 211 of lens barrel, the periphery of lens 230 is concentrated 200 ~ 300N/m
2stress.And, showing lens barrel 220 for being provided with the singular configuration of handle portion 222, therefore near handle portion 222, lens 230 being concentrated and has 500N/m
2above larger stress, to the Stress non-homogeneity that lens 230 apply.Be applied on lens 230 at this uneven stress, the polarized light property deterioration of lens 230 may be made.
To this, in the embodiment shown in Fig. 6 (a) with in the lens 11 of lens barrel, the stress that produces in the periphery of lens 30 is suppressed at roughly 200N/m
2following size, and, near handle portion 22, also inhibits concentrating of stress, only produce 200 ~ 300N/m in local
2stress.
According to the lens 11 with lens barrel of the present embodiment, the position being formed with groove 25a ~ 25f (eliminating a part in figure 6 and represent) at the base portion 21 of lens barrel 20 is provided with the thin part of wall thickness, and it is less that the thin part of this wall thickness and the part not arranging groove 25a ~ 25f compare the thermal stress that lens 30 act on.And, by arranging multiple groove 25a ~ 25g at base portion 21 and handle portion 22, make base portion 21 easily elastic deformation.Thus, by being provided with handle portion 22 and the thermal stress that produces of the lens barrel 20 with singular configuration is disperseed, thus it is uneven to have relaxed the thermal stress applied lens 30.
Thus, the known comparative example relative to Fig. 6 (b), the lens 11 with lens barrel of the present embodiment are by arranging groove 25a ~ 25g, thus reduce the size of the stress applied from lens barrel 20 pairs of lens 30 of singular configuration, and, inhibit to lens 30 apply unbalanced stress, thus along lens barrel 20 periphery and make stress equalizing.And, reduce to lens 30 apply stress and by its homogenising, therefore also prevent the deterioration of the polarized light property of lens 30.
< variation >
Fig. 7 is the front view of the lens with lens barrel of the first variation of present embodiment.In the first variation with in the lens 12 of lens barrel, be formed in the mounting surface 21a of base portion 21 different with the depth direction of each groove 25a ~ 25f of side 21b, 21c.As shown in Figure 7, when observing from optical axis 36 direction, the depth direction of each groove 25a ~ 25f towards the optical axis 36 of lens 30, and is formed on the direction orthogonal with the periphery of lens 30.And the depth direction of each groove 25a ~ 25f is formed obliquely relative to mounting surface 21a and side 21b, 21c.
When carrying out integrally formed to the lens 12 with lens barrel, during by lens 12 laser bonding with lens barrel on base station 41, the stress applied from lens barrel 20 pairs of lens 30 easily acts on towards the direction of optical axis 36.Therefore, in this variation with in the lens 12 of lens barrel, by forming each groove 25a ~ 25f as shown in Figure 7, effectively can reduce the component in the direction towards optical axis 36 of the stress applied from the lens barrel 20 pairs of lens 30.
Fig. 8 is the front view of the lens with lens barrel of the second variation.The difference of the lens 13 with lens barrel of the second variation is, is only formed with multiple groove 25a ~ 25d at side 21b, 21c, and does not form groove at mounting surface 21a and handle portion 22.By lens 13 laser bonding with lens barrel on base station 41 time, by near Laser Welding (LBW) contact 44, namely at least multiple groove 25a ~ 25d is formed at side 21b, 21c, the thermal stress of the base portion 21 because of laser bonding generation can be disperseed, thus the unbalanced stress from lens barrel 20 pairs of lens 30 applyings can be suppressed.And, in this variation, the slot machining of the lens 13 with lens barrel can be completed at short notice, thus can manufacturing cost be reduced.
Fig. 9 is the front view of the lens with lens barrel of the 3rd variation.In the present embodiment shown in Fig. 1 with in the lens 10 of lens barrel, rounded when lens 30 being set to observe from optical axis 36 direction, but be not limited thereto.As shown in Figure 9, in the 3rd variation with in the lens 14 of lens barrel, lens 31 are formed as elliptical shape.Even if adopt this form, by arranging multiple groove 25a ~ 25g at lens barrel 20, also can suppress the unbalanced stress applied from lens barrel 20 pairs of lens, thus the deterioration of the optical characteristics of lens 31 can be prevented.It should be noted that, lens 31, except elliptical shape, also can be formed as rectangular-shaped or polygon-shaped when observing from optical axis 36 direction.
Claims (6)
1. with lens for lens barrel, wherein, lens and lens barrel integrally formed, and the described lens with lens barrel are positioned on base station, and the feature of the described lens with lens barrel is,
Described lens are circular when observing from optical axis direction,
Described lens barrel has the handle portion keeping the base portion of described lens and be wholely set with described base portion,
The side that described base portion has mounting surface and is connected with described mounting surface, is formed with multiple groove in described side.
2., as claimed in claim 1 with the lens of lens barrel, it is characterized in that,
Described groove is also formed at described mounting surface.
3., as claimed in claim 1 or 2 with the lens of lens barrel, it is characterized in that,
Described groove is also formed at described handle portion.
4., as claimed in claim 1 or 2 with the lens of lens barrel, it is characterized in that,
Described groove is formed in the mode of depth direction towards the optical axis of described lens.
5., as claimed in claim 1 or 2 with the lens of lens barrel, it is characterized in that,
Form the bottom of described multiple groove in the position overlapping with the circumference of the imaginary circle larger than the periphery of described lens, described imaginary circle and described lens are concentric circles.
6., as claimed in claim 1 with the lens of lens barrel, it is characterized in that,
Extended on the direction that described groove intersects in the periphery with described lens.
Applications Claiming Priority (2)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP2013-170384 | 2013-08-20 | ||
| JP2013170384A JP2015040890A (en) | 2013-08-20 | 2013-08-20 | Lens with lens barrel |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN104423005A true CN104423005A (en) | 2015-03-18 |
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ID=52695107
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201410405938.1A Pending CN104423005A (en) | 2013-08-20 | 2014-08-18 | Lens provided with lens barrel |
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| Country | Link |
|---|---|
| JP (1) | JP2015040890A (en) |
| CN (1) | CN104423005A (en) |
Families Citing this family (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| KR102467061B1 (en) * | 2016-02-11 | 2022-11-14 | 엘지이노텍 주식회사 | Camera module and method for manufacturing the same |
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| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US5793540A (en) * | 1995-10-17 | 1998-08-11 | Alps Electric Co., Ltd. | Lens fixing structure |
| WO2010066521A2 (en) * | 2008-12-09 | 2010-06-17 | Osram Gesellschaft mit beschränkter Haftung | Hybrid optics |
| CN102025899A (en) * | 2009-09-11 | 2011-04-20 | 鸿富锦精密工业（深圳）有限公司 | Camera module and assembling method thereof |
| CN102573363A (en) * | 2010-12-27 | 2012-07-11 | 蒂雅克股份有限公司 | Electronic device and method for attaching light guide lens |
-
2013
- 2013-08-20 JP JP2013170384A patent/JP2015040890A/en active Pending
-
2014
- 2014-08-18 CN CN201410405938.1A patent/CN104423005A/en active Pending
Patent Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US5793540A (en) * | 1995-10-17 | 1998-08-11 | Alps Electric Co., Ltd. | Lens fixing structure |
| WO2010066521A2 (en) * | 2008-12-09 | 2010-06-17 | Osram Gesellschaft mit beschränkter Haftung | Hybrid optics |
| CN102025899A (en) * | 2009-09-11 | 2011-04-20 | 鸿富锦精密工业（深圳）有限公司 | Camera module and assembling method thereof |
| CN102573363A (en) * | 2010-12-27 | 2012-07-11 | 蒂雅克股份有限公司 | Electronic device and method for attaching light guide lens |
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| JP2015040890A (en) | 2015-03-02 |
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