CN110320627A - The manufacturing method of lens unit and the lens unit - Google Patents
The manufacturing method of lens unit and the lens unit Download PDFInfo
- Publication number
- CN110320627A CN110320627A CN201810295472.2A CN201810295472A CN110320627A CN 110320627 A CN110320627 A CN 110320627A CN 201810295472 A CN201810295472 A CN 201810295472A CN 110320627 A CN110320627 A CN 110320627A
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- China
- Prior art keywords
- lens
- retainer
- optical axis
- cylindrical portion
- lens unit
- Prior art date
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- Pending
Links
- 238000004519 manufacturing process Methods 0.000 title claims abstract description 19
- 230000003287 optical effect Effects 0.000 claims abstract description 106
- 230000002093 peripheral effect Effects 0.000 claims abstract description 43
- 230000007246 mechanism Effects 0.000 claims abstract description 29
- 239000012790 adhesive layer Substances 0.000 claims description 21
- 239000011521 glass Substances 0.000 claims description 18
- 239000007767 bonding agent Substances 0.000 claims description 8
- 238000009738 saturating Methods 0.000 claims description 5
- 239000010410 layer Substances 0.000 claims description 3
- 238000000034 method Methods 0.000 description 8
- 239000011347 resin Substances 0.000 description 5
- 229920005989 resin Polymers 0.000 description 5
- 125000006850 spacer group Chemical group 0.000 description 4
- 238000005299 abrasion Methods 0.000 description 3
- 238000007789 sealing Methods 0.000 description 3
- 230000017260 vegetative to reproductive phase transition of meristem Effects 0.000 description 3
- 239000000463 material Substances 0.000 description 2
- 238000004806 packaging method and process Methods 0.000 description 2
- 239000007787 solid Substances 0.000 description 2
- 238000007711 solidification Methods 0.000 description 2
- 230000008023 solidification Effects 0.000 description 2
- 229910001220 stainless steel Inorganic materials 0.000 description 2
- 239000010935 stainless steel Substances 0.000 description 2
- 229920001187 thermosetting polymer Polymers 0.000 description 2
- 238000004026 adhesive bonding Methods 0.000 description 1
- 230000000694 effects Effects 0.000 description 1
- 238000007373 indentation Methods 0.000 description 1
- JEIPFZHSYJVQDO-UHFFFAOYSA-N iron(III) oxide Inorganic materials O=[Fe]O[Fe]=O JEIPFZHSYJVQDO-UHFFFAOYSA-N 0.000 description 1
- 239000000203 mixture Substances 0.000 description 1
- 239000007800 oxidant agent Substances 0.000 description 1
- 230000001590 oxidative effect Effects 0.000 description 1
- 238000003466 welding Methods 0.000 description 1
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
- G02B7/021—Mountings, adjusting means, or light-tight connections, for optical elements for lenses for more than one lens
Abstract
A kind of manufacturing method of lens unit and the lens unit, even if using the first lens of small size in the midway of optical system, also can easily avoid because first lens there are due to caused by the optical property of lens unit be deteriorated and the deviation of optical property.Lens unit of the invention has multiple lens and keeps the lens barrel of this multiple lens, the multiple lens include the first lens and in the direction of the optical axis positioned at the two sides of first lens and second lens and the third lens adjacent with first lens, the lens barrel is held in by first retainer in a manner of the inner circumferential side of cylindrical portion of first lens to be located at the first retainer, wherein, first lens have can be in the state that the outer peripheral surface of first lens be opposite with the inner peripheral surface of the cylindrical portion along the shape of the direction adjustment position vertical with optical axis direction, first lens are fixed on first retainer via fixed mechanism.
Description
Technical field
The present invention relates to the manufacturing method more particularly to multiple lens of lens unit and the lens unit and keep this multiple
The lens unit of the lens barrel of lens and the manufacturing method of the lens unit.
Background technique
In the past, have a kind of lens unit comprising along optical axis direction arrangement multiple lens and keep this multiple lens
Lens barrel, also, in order to improve temperature characterisitic etc., in the optical system of lens unit, as one in multiple lens, in light
Circle is nearby configured with the glass lens as the spherical lens with small radii.
In said lens unit, since the radius for configuring the glass lens near aperture is smaller, flange can not be made
Therefore face etc. assembled glass lens using following methods in the past: as shown in figure 4, glass lens 15X is first pressed into retainer
30X is then combined glass lens 15X and retainer 30X by adhesive layer or riveting etc., then, will remain glass
The retainer of glass lens is pressed into the inside of the lens barrel of lens unit gently to remain coaxial between glass lens and other lens
Degree, and utilize the optical element clamping retainer of front and back to maintain the position of retainer (glass lens) in the direction of the optical axis.
In addition, above-mentioned glass lens uses the lesser biconvex lens of radius sometimes, in this feelings in said lens unit
Under condition, glass lens has very big focal power, and the lens with big focal power are set in lens position and gradient deviation
Optical property can significantly be deteriorated when meter center, it is therefore necessary to accurately keep lens position and gradient.However, due to radius
Lesser biconvex lens can not make flange surface etc., thus be difficult with retainer accurately keep biconvex lens position and
Gradient, particularly, influence of the gradient to optical property are very big, saturating as glass in the lesser biconvex lens of actionradius
In the case where mirror, be easy because the glass lens there are due to cause the optical property of lens unit to be deteriorated and optical property caused to produce
Raw deviation.
Summary of the invention
The present invention precisely in order to solve described problem and complete, the purpose of the present invention is to provide a kind of lens unit and
The manufacturing method of the lens unit also can be avoided easily even if using the glass lens of small size in the midway of optical system
Because the glass lens there are due to caused by the optical property of lens unit be deteriorated and the deviation of optical property.
To achieve the goals above, the first aspect of the present invention provides a kind of lens unit, has multiple lens and holding
The lens barrel of this multiple lens, the multiple lens include the first lens and in the direction of the optical axis be located at first lens two
Side and second lens adjacent with first lens and the third lens, first lens are positioned at the cylindrical portion of the first retainer
The mode of inner circumferential side be held in the lens barrel by first retainer, which is characterized in that first lens have energy
Along the direction tune vertical with optical axis direction in the state that the outer peripheral surface of first lens is opposite with the inner peripheral surface of the cylindrical portion
The shape of whole position, first lens are fixed on first retainer via fixed mechanism.
Lens unit according to the present invention, the first lens have can be in the outer peripheral surface of first lens and the inner circumferential of cylindrical portion
Therefore shape in the state that face is opposite along the direction adjustment position vertical with optical axis direction can exist having adjusted the first lens
Position on optical axis direction and/or the first lens are fixed relative to the gradient of optical axis direction and then using fixed mechanism
In the first retainer, whereby, even if using the first lens of small size in the midway of optical system, also it is easy accurately to keep
The position of first lens and gradient, thus avoid because first lens there are due to caused by lens unit optical property variation
With the deviation of optical property.
In addition, the preferably described fixed mechanism is by first lens and described first in lens unit of the invention
The fixed part of retainer connection, which is at least one of adhesive layer, weld part and caulking part.
First lens easily can be fixed on the first retainer, particularly, by gluing by lens unit according to the present invention
It connects in the case that oxidant layer constitutes fixed part, in assembling, is having adjusted the first lens position in the direction of the optical axis and/or opposite
After the gradient of optical axis direction, make it after only need to filling uncured bonding agent between the first lens and the first retainer
First lens just can be fixed on the first retainer by solidification, whereby, can easily avoid because the first lens there are due to caused by
The optical property of lens unit is deteriorated and the deviation of optical property.
In addition, in lens unit of the invention, the preferably described fixed mechanism includes: chimeric with first lens
Two retainers, second retainer has can be in the cylindrical portion of the outer peripheral surface and first retainer of second retainer
Along the shape of the direction adjustment position vertical with optical axis direction in the state that inner peripheral surface is opposite；And by second retainer with
The fixed part of the first retainer connection, which is at least one of adhesive layer, weld part and caulking part.
Second retainer easily can be fixed on the first retainer, also, assembled by lens unit according to the present invention
When, it can first make the first lens chimeric with the second retainer, then, to the first lens in light in the state of holding the second retainer
Position in axis direction and/or the gradient relative to optical axis direction are adjusted, therefore, with it is direct hold the first lens come into
The situation that line position sets adjustment etc. is compared, easy to operate, can improve the efficiency of assembling operation, also, can be reduced to the first lens
Touch operation reduces a possibility that the first lens generate abrasion, scuffing etc. in an assembling process.
In addition, can be used in the lens unit of above structure with flowering structure: the fixed part setting is saturating described first
In the entire circumferential direction of mirror.
Lens unit according to the present invention helps to balance and the first lens is firmly fixed on the first retainer.
In addition, can be used in the lens unit of above structure with flowering structure: being formed with confession on second retainer
The clamped portion of gripper mechanism grips.
Lens unit according to the present invention, can be convenient after keeping the first lens chimeric with the second retainer in assembling
Ground has the second retainer of the first lens to operate to chimeric, helps to improve the operating efficiency of assembling.
In addition, can be used in the lens unit of above structure with flowering structure: first retainer includes from the cylinder
For the inner peripheral surface in shape portion towards radially inner side protrusion outstanding, second retainer is located at the inner circumferential side of the cylindrical portion, and
It is opposite with the protrusion in the direction of the optical axis, the fixed part be formed in second retainer and the protrusion and/or
Between cylindrical portion.
Lens unit according to the present invention can be easily with compared with the first retainer does not include the case where protrusion
Second retainer is fixed on the first retainer by fixed part.
In addition, preferably described first retainer is saturating with described second in the direction of the optical axis in lens unit of the invention
Mirror and the third lens abut.
Lens unit according to the present invention can easily utilize position of first retainer to the first lens in the direction of the optical axis
It sets and is positioned.
In addition, preferably described first lens are the spherical lenses of glass system in lens unit of the invention.
Lens unit according to the present invention, the first lens are easy to manufacture, facilitate the manufacturing cost for reducing lens unit.
In addition, in lens unit of the invention, the periphery of the inner peripheral surface of the preferably described cylindrical portion and first lens
Face difference is rounded, and first lens have the outer diameter smaller than the internal diameter of the cylindrical portion.
Lens unit according to the present invention is adjusting the first lens position in the direction of the optical axis and/or relative to optical axis
When the gradient in direction, the first lens are not easy to be blocked by cylindrical portion, also, can be easily in the cylindrical portion of the first retainer and the
Ensure to help to improve packaging efficiency for the gap for filling adhesive layer between one lens.
To achieve the goals above, the second aspect of the present invention provides a kind of manufacturing method of lens unit, the lens
Unit has multiple lens and keeps the lens barrel of this multiple lens, and the multiple lens are including the first lens and in optical axis direction
The upper two sides positioned at first lens and second lens and the third lens adjacent with first lens, first lens with
Mode positioned at the inner circumferential side of the cylindrical portion of the first retainer is held in the lens barrel by first retainer, and feature exists
In, first lens have can in the state that the outer peripheral surface of first lens is opposite with the inner peripheral surface of the cylindrical portion edge with
The shape of the vertical direction adjustment position of optical axis direction, have adjusted first lens position in the direction of the optical axis and/or
After the gradient of optical axis direction, first lens are held in first retainer via fixed mechanism.
The manufacturing method of lens unit according to the present invention, the first lens have can be in the outer peripheral surface and cylinder of first lens
It is the first lens are not straight along the shape of the direction adjustment position vertical with optical axis direction in the state that the inner peripheral surface in shape portion is opposite
It connects the first retainer of indentation, but is having adjusted the first lens position in the direction of the optical axis and/or relative to optical axis direction
Gradient and then the first lens are fixed on the first retainer using fixed mechanism, whereby, even if in the midway of optical system
Using the first lens of small size, also it is easy accurately to keep position and the gradient of the first lens, to avoid because of first
The presence of lens and caused by lens unit optical property be deteriorated and optical property deviation.
In addition, the preferably described fixed mechanism is by first lens in the manufacturing method of lens unit of the invention
The fixed part connecting with first retainer, the fixed part are at least one of adhesive layer, weld part and caulking part.
The manufacturing method of lens unit according to the present invention, have adjusted the position of the first lens in the direction of the optical axis and/
Or relative to the gradient of optical axis direction after, the first lens easily can be fixed on the first retainer, whereby, can be easily
Avoid because first lens there are due to caused by the optical property of lens unit be deteriorated and the deviation of optical property.
In addition, in the manufacturing method of lens unit of the invention, the preferably described fixed mechanism include: with described first thoroughly
The second chimeric retainer of mirror, second retainer has can be in the outer peripheral surface and first retainer of second retainer
Cylindrical portion inner peripheral surface it is opposite in the state of along the direction adjustment position vertical with optical axis direction shape；And by described
The fixed part that two retainers are connect with first retainer, the fixed part be in adhesive layer, weld part and caulking part extremely
Few one kind, after keeping first lens chimeric with second retainer, in the state of holding second retainer
The position of first lens in the direction of the optical axis and/or the gradient relative to optical axis direction are adjusted, then, utilized
Second retainer is fixed on first retainer by the fixed part.
Second retainer easily can be fixed on the first retainer by the manufacturing method of lens unit according to the present invention,
Also, it is then right in the state of holding the second retainer by first making the first lens chimeric with the second retainer in assembling
The position of first lens in the direction of the optical axis and/or the gradient relative to optical axis direction are adjusted, and can be reduced to first thoroughly
The touch operation of mirror reduces a possibility that the first lens generate abrasion, scuffing etc. in an assembling process.
(invention effect)
According to the present invention, the first lens have can be in the outer peripheral surface of first lens and the cylindrical portion of the first retainer
Along the shape of the direction adjustment position vertical with optical axis direction in the state that circumferential surface is opposite, the first lens are not pressed directly into the
One retainer, but the first lens are held in the first retainer via fixed mechanism, therefore, it can exist having adjusted the first lens
Position on optical axis direction and/or the first lens are fixed relative to the gradient of optical axis direction and then using fixed mechanism
In the first retainer, whereby, even if using the first lens of small size in the midway of optical system, also it is easy accurately to keep
The position of first lens and gradient, thus avoid because first lens there are due to caused by lens unit optical property variation
With the deviation of optical property.
Detailed description of the invention
Fig. 1 is the integrally-built sectional view for schematically illustrating the lens unit of embodiment of the present invention one.
Fig. 2 is the side section view of the fixed structure of the first lens in the lens unit for schematically illustrate embodiment of the present invention one
Figure.
Fig. 3 is the side section view of the fixed structure of the first lens in the lens unit for schematically illustrate embodiment of the present invention two
Figure.
Fig. 4 is the sectional view for schematically illustrating the fixed structure of the first lens in existing lens unit.
(symbol description)
1 lens unit
11 lens
12 lens
13 lens
14 second lens
15 first lens
16 the third lens
17 lens
20 lens barrels
21 cylindrical body parts
22 annular flange portions
23 major diameter canister portions
24 annular base plate portions
25 circular step portions
26 annular recess
27 annular recess
30 first retainers
31 cylindrical portions
40 fixed mechanisms
50 barn doors
60 apertures
70 infrared filters
80 lens barrel retainers
90 sealing rings
Specific embodiment
In the following, being illustrated in conjunction with attached drawing to the lens unit of embodiment of the present invention.
In the following description, " object side L1 " and " image side L2 " refers to the object side on optical axis L direction (below sometimes
Referred to as front side) and image side (following sometimes referred to as rear side), also, " optical axis direction " refers to the direction parallel with optical axis L.
<embodiment one>
Fig. 1 is the integrally-built sectional view for schematically illustrating the lens unit of embodiment of the present invention one, and Fig. 2 is signal
Indicate the sectional view of the fixed structure of the first lens in the lens unit of embodiment of the present invention one.
As shown in Figure 1, lens unit 1 has multiple lens and keeps the lens barrel 20 of this multiple lens, multiple lens include
First lens 15 and in the direction of the optical axis positioned at the two sides of the first lens 15 and second lens adjacent with first lens 15
14 and the third lens 16, it is protected by first in a manner of the inner circumferential side of cylindrical portion 31 of first lens 15 to be located at the first retainer 30
It holds frame 30 and is held in lens barrel 20.Also, as shown in Fig. 2, the first lens 15 have can be in the outer peripheral surface and cylinder of first lens 15
Along the shape of the direction adjustment position vertical with optical axis direction in the state that the inner peripheral surface in shape portion 31 is opposite, the first lens 15 via
Fixed mechanism 40 is fixed on the first retainer 30.
Herein, lens unit 1 include along optical axis direction arrangement seven lens, be successively from the L1 of object side lens 11,
Lens 12, lens 13, the second lens 14, the first lens 15, the third lens 16 and lens 17, also, in lens 12 and lens 13
Between be provided with barn door 50, be provided with aperture 60 between the second lens 14 and the first lens 15, than lens 17 lean on image side
The position of L2 is configured with infrared filter 70 and capturing element (not shown).Specifically, lens 11 have negative focal power
(power), the surface of object side L1 is convex, and the surface (central part) of image side L2 is concave；Lens 12 have negative light
The surface of focal power, object side L1 is convex, and the surface (central part) of image side L2 is concave；Lens 13 have negative light focus
Degree, the surface of object side L1 is concave, and the surface of image side L2 is convex；Second lens 14 have positive focal power, object
The surface (central part) of side L1 is convex, and the surface (central part) of image side L2 is convex；First lens 15 have positive light
The surface of focal power, object side L1 is convex, and the surface of image side L2 is also convex；The third lens 16 have negative focal power,
The surface (central part) of object side L1 is concave, and the surface (central part) of image side L2 is also concave；Lens 17 have positive
The surface (central part) of focal power, object side L1 is convex, and the surface (central part) of image side L2 is also convex.In this reality
Apply in mode, lens 11 and the first lens 15 are made of glass, lens 12, lens 13, the second lens 14, the third lens 16 and thoroughly
Mirror 17 is formed from a resin, and the surface of the object side L1 of the first lens 15 and the surface of image side L2 are spherical surface (i.e. the first lens 15
It is spherical lens), the third lens 16 and lens 17 are interconnected and become cemented lens, and however, it is not limited to this.
In addition, lens barrel 20 is for example formed from a resin, its rear end is held in lens barrel retainer 80.Specifically, lens barrel 20 has
There is the cylindrical body part 21 extended along optical axis direction, radially outer from the front end (i.e. the end of object side L1) of cylindrical body part 21
It side expanding annular flange portion 22, the major diameter cylinder that extends from the neighboring of annular flange portion 22 towards front side (i.e. object side L1)
Portion 23 and from the neighbouring radially inside annular base plate portion 24 outstanding in the rear end (i.e. the end of image side L2) of cylindrical body part 21,
Also, it is formed with circular step portion 25 slightly by the position of front side than annular base plate portion 24 in cylindrical body part 21, in tubular master
The front side in body portion 21 is formed with the annular recess 26 being recessed from the end face of its object side L1 towards image side L2.In present embodiment
In, the surface of the image side L2 of lens 11 is abutted with the surface of cylindrical body part 21 and the object side L1 of annular flange portion 22, major diameter
Radially inside protrudes and abuts from object side L1 with lens 11 for the end (caulking part) of the object side L1 of canister portion 23, thus in light
Lens 11 are positioned in axis direction；The table of the object side L1 on the surface and circular step portion 25 of the image side L2 of the third lens 16
Face abuts, and successively overlaps in the front side of the third lens 16 positioned by circular step portion 25 and keeps the first of the first lens 15
Retainer 30, aperture 60, the second lens 14, lens 13 and lens 12, the end of the object side L1 of cylindrical body part 21 is radially
Inside is prominent and abuts from object side L1 with lens 12, whereby, in the direction of the optical axis to lens 12, lens 13, the second lens 14,
First lens 15 and the third lens 16 are positioned；Lens 17 are sandwiched between the third lens 16 and annular base plate portion 24.Also,
In the present embodiment, the ring being recessed from the end face of its object side L1 towards image side L2 is formed in the front side of annular flange portion 22
Shape groove 27 is provided with sealing ring 90 in the annular recess 27, and the sealing ring 90 is between lens 11 and annular flange portion 22
It is sealed；In lens barrel 20, infrared filter 70 is arranged between annular base plate portion 24 and lens barrel retainer 80, and is protected
It is held in the rear end face in annular base plate portion 24.
Herein, as shown in Fig. 2, fixed mechanism 40 is the adhesive layer by connecting the first lens 15 with the first retainer 30
The fixed part of composition.Specifically, the first retainer 30 has the rounded cylindrical portion 31 of inner peripheral surface and from the cylindrical portion 31
The surface of object side L1 is towards object side L1 protrusion 32 (such as being arranged around optical axis L multiple) outstanding, protrusion equiangularly spacedly
32 abut with the surface (peripheral part) of the image side L2 of the second lens 14, the surface of the image side L2 of cylindrical portion 31 and the third lens 16
Object side L1 surface (peripheral part) abut, whereby, the first retainer 30 is positioned in the direction of the optical axis；First lens 15
Outer peripheral surface it is rounded, and there is the outer diameter smaller than the internal diameter of cylindrical portion 31, and by the is arranged in as fixed mechanism 40
Adhesive layer in the entire circumferential direction of one lens 15 is held in the inner circumferential side of cylindrical portion 31.
Hereinafter, being illustrated to an example for the method that the first lens 15 are held in the first retainer 30.
Firstly, the first retainer 30 is set to fulcrum bearing (not shown) across ring-like spacer part (not shown).Herein, ring
Shape spacer is, for example, the plate of the specific thickness of stainless steel, the surface element of confession the first retainer 30 bearing of fulcrum bearing for example by
The material harder than the first lens 15 is constituted, and for example implements mirror finish.
Then, hold the first lens 15, and make the first lens 15 be moved to the first retainer 30 cylindrical portion 31 inner circumferential
Side.
Then, to the first lens 15 position in the direction of the optical axis and relative to optical axis direction gradient (i.e. relative to
The position of first retainer 30) it is adjusted.
Finally, being injected between the inner peripheral surface of the cylindrical portion 31 of the outer peripheral surface and the first retainer 30 of the first lens 15 not solid
The bonding agent (such as thermosetting resin or photocurable resin, however, it is not limited to this) of change, and solidify bonding agent, thus shape
At adhesive layer, the first lens 15 are fixed on the first retainer 30.
Lens unit according to the present embodiment, the first lens 15 have can be in the outer peripheral surface and tubular of first lens 15
Along the shape of the direction adjustment position vertical with optical axis direction in the state that the inner peripheral surface in portion 31 is opposite, not by the first lens 15
It is pressed directly into the first retainer 30, but the first lens 15 are held in the first retainer 30, therefore, energy via fixed mechanism 40
Having adjusted the position of the first lens 15 in the direction of the optical axis and/or the gradient relative to optical axis direction and then utilization admittedly
Determine mechanism 40 and first lens 15 are fixed on the first retainer 30, whereby, even if in the midway of optical system using small size
First lens 15 are also easy accurately to keep position and the gradient of the first lens 15, to avoid because of the first lens 15
In the presence of and caused by lens unit 1 optical property be deteriorated and optical property deviation.
In addition, lens unit according to the present embodiment, fixed mechanism 40 is by by the first lens 15 and the first retainer
Therefore the fixed part that the adhesive layer of 30 connections is constituted in assembling, is having adjusted the position of the first lens 15 in the direction of the optical axis
Set and/or relative to the gradient of optical axis direction after, need to only be filled between the first lens 15 and the first retainer 30 solid
Make its solidification after the bonding agent of change, just the first lens 15 can be fixed on the first retainer 30, whereby, can easily avoid because of
The presence of one lens 15 and caused by lens unit 1 optical property be deteriorated and optical property deviation.
In addition, lens unit according to the present embodiment, the fixed part being made of adhesive layer is arranged in the first lens 15
Entire circumferential direction on, therefore, facilitate balance and the first lens 15 are firmly fixed on the first retainer 30.
In addition, lens unit according to the present embodiment, the first retainer 30 in the direction of the optical axis with the second lens 14 and
The third lens 16 abut, therefore, can easily using the first retainer 30 to the first lens 15 position in the direction of the optical axis into
Row positioning.
In addition, lens unit according to the present embodiment, the first lens 15 are spherical lenses, and therefore, the first lens 15 hold
Easily manufacture facilitates the manufacturing cost for reducing lens unit 1.
In addition, lens unit according to the present embodiment, the cylindrical portion 31 that the first retainer 30 has inner peripheral surface rounded,
The outer peripheral surface of first lens 15 is rounded, and has the outer diameter smaller than the internal diameter of cylindrical portion 31, and be held in the interior of cylindrical portion 31
Side, therefore, when adjusting the first lens 15 position in the direction of the optical axis and/or relative to the gradient of optical axis direction, the
One lens 15 are not easy to be blocked by cylindrical portion 31, also, can be easily in the cylindrical portion 31 of the first retainer 30 and the first lens 15
Between ensure to help to improve packaging efficiency for the gap for filling adhesive layer.
<embodiment two>
The lens unit of embodiment two has the lens unit basically same structure with above embodiment one, implements
The difference of the lens unit of the lens unit and above embodiment one of mode two is the fixed structure of the first lens, because
This, is illustrated centered on the difference below, and omits the explanation of other parts.
Fig. 3 is the side section view of the fixed structure of the first lens in the lens unit for schematically illustrate embodiment of the present invention two
Figure.
As shown in figure 3, in the present embodiment, fixed mechanism 40A includes: and the first lens 15A (its structure and above-mentioned reality
The structure for applying the first lens 15 of mode one is identical) chimeric the second retainer 41A, which has can be at it
Along the direction tune vertical with optical axis direction in the state that outer peripheral surface is opposite with the inner peripheral surface of cylindrical portion 31A of the first retainer 30A
The shape of whole position；And the fixation by constituting the second retainer 41A with the first retainer 30A adhesive layer 42A connecting
Portion.For having, the second retainer 41A has cylindrical portion, and the first lens 15A is pressed into the interior of the cylindrical portion of the second retainer 41A
Side.
Herein, the first retainer 30A includes: the rounded cylindrical portion 31A of inner peripheral surface；And the inner circumferential from cylindrical portion 31A
It is located at the inner circumferential side of cylindrical portion 31A facing towards radially inner side protrusion 33A outstanding, the second retainer 41A, and in optical axis direction
It is upper opposite with protrusion 33A, adhesive layer 42A be formed between the second retainer 41A and protrusion 33A and cylindrical portion 31A (but
Adhesive layer 42A can also be only formed between the second retainer 41A and protrusion 33A, or be only formed in the second retainer 41A with
Between cylindrical portion 31A).Although not shown, but the first retainer 30A may also comprise and the first retainer in above embodiment one
The 30 identical protrusion of protrusion 32.
In addition, can also be formed on the second retainer 41A for gripper mechanism grips clamped portion (such as protrusion, recess
Or hole etc.).
Hereinafter, being illustrated to an example for the method that the first lens 15A is held in the first retainer 30A.
Firstly, the first retainer 30A is set to fulcrum bearing (not shown) across ring-like spacer part (not shown).Herein,
Ring-like spacer part is, for example, the plate of the specific thickness of stainless steel, the surface element example of confession the first retainer 30A bearing of fulcrum bearing
It is such as made of the material harder than the first lens 15A, and for example implements mirror finish.
Then, make the first lens 15A chimeric with the second retainer 41A, hold the second retainer 41A, and make the first lens
15A is moved to the inner circumferential side of the cylindrical portion 31A of the first retainer 30A.
Then, to the position in the direction of the optical axis the first lens 15A and relative to optical axis direction gradient (i.e. relative to
The position of first retainer 30A) it is adjusted.
Finally, in the outer peripheral surface of the second retainer 41A, the end face of front side and the cylindrical portion 31A of the first retainer 30A
Circumferential surface, protrusion 33A rear side end face between inject uncured bonding agent (such as thermosetting resin or light-cured type tree
Rouge, however, it is not limited to this), and solidify bonding agent, to form adhesive layer, the first lens 15A is fixed on the first guarantor
Hold frame 30A.
Lens unit according to the present embodiment can first make the first lens 15A and the second retainer 41A embedding in assembling
Close, then, in the state of holding the second retainer 41A to the position in the direction of the optical axis the first lens 15A and/or relative to
The gradient of optical axis direction is adjusted, and therefore, the situation phase of position adjustment etc. is carried out with the first lens 15A of direct holding
Than, it is easy to operate, the efficiency of assembling operation can be improved, also, can be reduced the touch operation to the first lens 15A, reduce first
Lens 15A generates a possibility that abrasion, scuffing etc. in an assembling process.
In addition, lens unit according to the present embodiment, by being formed on the second retainer 41A for gripper mechanism grips
Clamped portion after keeping the first lens 15A chimeric with the second retainer 41A, easily can have the to being fitted into assembling
The second retainer 41A of one lens 15A is operated, and the operating efficiency of assembling is helped to improve.
In addition, lens unit according to the present embodiment, does not include the case where protrusion 33A phase with the first retainer 30A
Than that the second retainer 41A can be fixed on the first retainer 30A easily with adhesive layer.
The present invention is exemplarily described above in conjunction with attached drawing, it is clear that specific implementation of the invention is not by above-mentioned reality
Apply the limitation of mode.
For example, in the above-described embodiment, lens unit includes seven lens along optical axis direction arrangement, but is not limited to
In this, the quantity of lens can appropriate adjustment as needed, also, the form of lens unit each lens for including can also be as needed
Appropriate adjustment.
In addition, in the above-described embodiment, as fixed part, giving the example of adhesive layer, however, it is not limited to this,
Fixed part can also be constituted by weld part or caulking part (referring to the fixed form of lens 11), can also by adhesive layer, weld part and
The combination of caulking part constitutes fixed part.
In addition, it is chimeric with the second retainer 41A to make the first lens 15A, but be not limited in above embodiment two
This, can also be fixed on the first lens for the second retainer by other methods such as bonding, riveting, welding.
In addition, first retainer 30A has protrusion 33A, and however, it is not limited to this in above embodiment two,
Above-mentioned protrusion 33A can be omitted, can be also arranged on the second retainer 41A from its cylinder while omitting above-mentioned protrusion 33A
Shape portion along optical axis direction protrusion outstanding, and the cylindrical portion in the second retainer 41A, protrusion and the first retainer 30A it
Between form fixed part etc..
In addition, in the above-described embodiment, fixed part is arranged in the entire circumferential direction of the first lens, but is not limited to
This, a part that can also be only arranged in the circumferential direction of the first lens.
Claims (12)
1. a kind of lens unit, the lens barrel with this multiple lens of multiple lens and holding, the multiple lens include first saturating
Mirror and in the direction of the optical axis positioned at the two sides of first lens and adjacent with first lens the second lens and third it is saturating
Mirror, first lens are held in a manner of positioned at the inner circumferential side of the cylindrical portion of the first retainer by first retainer
The lens barrel, which is characterized in that
First lens have can in the state that the outer peripheral surface of first lens is opposite with the inner peripheral surface of the cylindrical portion edge
The shape of the direction adjustment position vertical with optical axis direction,
First lens are fixed on first retainer via fixed mechanism.
2. lens unit as described in claim 1, which is characterized in that
The fixed mechanism is the fixed part for connecting first lens with first retainer, which is bonding agent
At least one of layer, weld part and caulking part.
3. lens unit as described in claim 1, which is characterized in that
The fixed mechanism includes:
Second retainer chimeric with first lens, second retainer has can be in the outer peripheral surface of second retainer
Along the direction adjustment position vertical with optical axis direction in the state of opposite with the inner peripheral surface of cylindrical portion of first retainer
Shape；And
The fixed part that second retainer is connect with first retainer, the fixed part be adhesive layer, weld part and
At least one of caulking part.
4. lens unit as claimed in claim 2 or claim 3, which is characterized in that
The fixed part is arranged in the entire circumferential direction of first lens.
5. lens unit as claimed in claim 3, which is characterized in that
The clamped portion for gripper mechanism grips is formed on second retainer.
6. lens unit as claimed in claim 3, which is characterized in that
First retainer include from the inner peripheral surface of the cylindrical portion towards radially inner side protrusion outstanding,
Second retainer is located at the inner circumferential side of the cylindrical portion, and opposite with the protrusion in the direction of the optical axis,
The fixed part is formed between second retainer and the protrusion and/or the cylindrical portion.
7. lens unit as described in claim 1, which is characterized in that
First retainer is abutted with second lens and the third lens in the direction of the optical axis.
8. lens unit as described in claim 1, which is characterized in that
First lens are the spherical lenses of glass system.
9. lens unit as described in claim 1, which is characterized in that
The outer peripheral surface of the inner peripheral surface of the cylindrical portion and first lens difference is rounded,
First lens have the outer diameter smaller than the internal diameter of the cylindrical portion.
10. a kind of manufacturing method of lens unit, the lens unit has multiple lens and keeps the lens barrel of this multiple lens,
The multiple lens include the first lens and in the direction of the optical axis positioned at first lens two sides and with first lens
The second adjacent lens and the third lens, first lens are borrowed in a manner of positioned at the inner circumferential side of the cylindrical portion of the first retainer
First retainer is helped to be held in the lens barrel, which is characterized in that
First lens have can in the state that the outer peripheral surface of first lens is opposite with the inner peripheral surface of the cylindrical portion edge
The shape of the direction adjustment position vertical with optical axis direction,
Have adjusted first lens position in the direction of the optical axis and/or relative to the gradient of optical axis direction after, warp
First lens are fixed on first retainer by fixed mechanism.
11. the manufacturing method of lens unit as claimed in claim 10, which is characterized in that
The fixed mechanism is the fixed part for connecting first lens with first retainer, which is bonding agent
At least one of layer, weld part and caulking part.
12. the manufacturing method of lens unit as claimed in claim 10, which is characterized in that
The fixed mechanism includes:
Second retainer chimeric with first lens, second retainer has can be in the outer peripheral surface of second retainer
Along the direction adjustment position vertical with optical axis direction in the state of opposite with the inner peripheral surface of cylindrical portion of first retainer
Shape；And
The fixed part that second retainer is connect with first retainer, the fixed part be adhesive layer, weld part and
At least one of caulking part,
After keeping first lens chimeric with second retainer, to institute in the state of holding second retainer
It states the position of the first lens in the direction of the optical axis and/or the gradient relative to optical axis direction is adjusted, then, using described
Second retainer is fixed on first retainer by fixed part.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201810295472.2A CN110320627A (en) | 2018-03-30 | 2018-03-30 | The manufacturing method of lens unit and the lens unit |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201810295472.2A CN110320627A (en) | 2018-03-30 | 2018-03-30 | The manufacturing method of lens unit and the lens unit |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN110320627A true CN110320627A (en) | 2019-10-11 |
Family
ID=68112445
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201810295472.2A Pending CN110320627A (en) | 2018-03-30 | 2018-03-30 | The manufacturing method of lens unit and the lens unit |
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| Country | Link |
|---|---|
| CN (1) | CN110320627A (en) |
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|---|---|---|---|---|
| CN1333473A (en) * | 2000-07-17 | 2002-01-30 | 株式会社东芝 | Optical lens unit with optical lens focus adjusting mechanism |
| JP2003202485A (en) * | 2002-01-08 | 2003-07-18 | Chinontec Kk | Zoom lens barrel and camera apparatus |
| CN101493563A (en) * | 2008-01-23 | 2009-07-29 | 索尼株式会社 | Lens barrel and image pickup unit |
| CN103201665A (en) * | 2010-03-29 | 2013-07-10 | 柯尼卡美能达先进多层薄膜株式会社 | Image pickup optical system and optical adjustment method |
| JP2015210334A (en) * | 2014-04-24 | 2015-11-24 | 日本電産サンキョー株式会社 | Lens unit and optical device |
| CN208026967U (en) * | 2018-03-30 | 2018-10-30 | 日本电产三协（东莞）工机有限公司 | Lens unit |
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2018
- 2018-03-30 CN CN201810295472.2A patent/CN110320627A/en active Pending
Patent Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN1333473A (en) * | 2000-07-17 | 2002-01-30 | 株式会社东芝 | Optical lens unit with optical lens focus adjusting mechanism |
| JP2003202485A (en) * | 2002-01-08 | 2003-07-18 | Chinontec Kk | Zoom lens barrel and camera apparatus |
| CN101493563A (en) * | 2008-01-23 | 2009-07-29 | 索尼株式会社 | Lens barrel and image pickup unit |
| CN103201665A (en) * | 2010-03-29 | 2013-07-10 | 柯尼卡美能达先进多层薄膜株式会社 | Image pickup optical system and optical adjustment method |
| JP2015210334A (en) * | 2014-04-24 | 2015-11-24 | 日本電産サンキョー株式会社 | Lens unit and optical device |
| CN208026967U (en) * | 2018-03-30 | 2018-10-30 | 日本电产三协（东莞）工机有限公司 | Lens unit |
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