CN109870790A - A kind of telecentric lens - Google Patents
A kind of telecentric lens Download PDFInfo
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- CN109870790A CN109870790A CN201910308269.9A CN201910308269A CN109870790A CN 109870790 A CN109870790 A CN 109870790A CN 201910308269 A CN201910308269 A CN 201910308269A CN 109870790 A CN109870790 A CN 109870790A
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- 230000003287 optical effect Effects 0.000 claims abstract description 43
- 238000001914 filtration Methods 0.000 claims description 19
- 238000009738 saturating Methods 0.000 claims 1
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- 238000003384 imaging method Methods 0.000 abstract description 13
- 238000005286 illumination Methods 0.000 abstract description 9
- 206010037660 Pyrexia Diseases 0.000 abstract description 3
- 230000003313 weakening effect Effects 0.000 abstract description 3
- 238000011982 device technology Methods 0.000 abstract description 2
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Abstract
The invention discloses a kind of telecentric lens, belong to field of optical device technology, including lens barrel, from object plane side to image planes side, object side lens group, diaphragm and image side lens group are disposed in lens barrel, diaphragm is located at the focal position of object side lens group and image side lens group, and telecentric lens further include coaxial light source, coaxial light source includes annular luminous part, and annular luminous part is sheathed on diaphragm.Telecentric lens proposed by the present invention, by being arranged coaxial light source inside lens barrel, compared with prior art, it can be avoided weakening of the semi-transparent semi-reflecting lens to intensity of illumination, the utilization rate to light is improved, so that intensity of illumination is improved, under same lighting condition, so that by object side lens return come intensity of illumination improve 150%, be conducive to raising imaging effect.Moreover, the fever that can be avoided light source is serious, the normal work of telecentric lens is influenced.In addition, compared with prior art, not needing additionally to open up light hole on lens barrel, the difficulty of processing of lens barrel is reduced.
Description
Technical field
The present invention relates to field of optical device technology more particularly to a kind of telecentric lens.
Background technique
Telecentric lens are mainly to correct the parallax of traditional industry camera lens and design, it can be in certain object distance range
Interior, the image enlargement ratio made is constant, this is to the very important application of situation of the measured object not on same object plane.
Currently, telecentric lens cooperate coaxial light source using semi-transparent semi-reflecting lens, coaxial light source is arranged outside lens barrel, passes through mirror
The light hole opened up on cylinder is extend into lens barrel, and this scheme causes semi-transparent semi-reflecting lens that can have to light while projecting and reflecting
Effect, the light for allowing to acquire seriously undermine, and have to improve light-source brightness so that clearly to collect image, this
It is serious to will lead to light source fever, it is difficult to work long hours, influence the normal work of telecentric lens.
Summary of the invention
The purpose of the present invention is to provide a kind of telecentric lens, to realize the utilization for improving and emitting beam to coaxial light source
Rate improves imaging effect.
As above design, the technical scheme adopted by the invention is that:
A kind of telecentric lens, including lens barrel are disposed with object side lens from object plane side to image planes side in the lens barrel
Group, diaphragm and image side lens group, the diaphragm is located at the focal position of object side lens group and the image side lens group, described
Telecentric lens further include coaxial light source, and the coaxial light source includes annular luminous part, and the annular luminous part is sheathed on the light
On door screen.
Further, the annular luminous part includes annular circuit board, on the annular circuit board radially by it is interior extremely
It is provided with multi-turn LED light outside.
Further, the coaxial light source further includes uniform light board, and the uniform light board is sheathed on the diaphragm, and is located at institute
Annular luminous part is stated towards the side of object side lens group.
Further, the telecentric lens further include the optical filtering cylinder being set in the lens barrel, and the diaphragm is set to institute
It states in optical filtering cylinder, the annular luminous part is sheathed on the optical filtering cylinder.
Further, the telecentric lens further include the optical tube being set in the lens barrel, and described optical tube one end connects
The optical filtering cylinder is passed through, the other end is provided with the image side lens group.
Further, the optical tube includes the first taper type cylinder and the second taper type cylinder, the first taper type cylinder
Miner diameter end is connected to the miner diameter end of the second taper type cylinder, and the bigger diameter end of the first taper type cylinder, which extends outwardly, is provided with
One mounting groove, the part optical filtering cylinder are located in first mounting groove, and the bigger diameter end of the second taper type cylinder extends outwardly
It is provided with the second mounting groove, the image side lens group is set in second mounting groove.
Further, along the axis direction of the optical tube, the inner wall of the optical tube along be provided with it is multiple in a ring
Hierarchic structure, multiple hierarchic structures are configured as eliminating stray light.
Further, object side lens group includes the first lens and the second lens, first lens and the second lens
It is convex lens, the spherical surface of the spherical surface of first lens and second lens abuts against.
Further, the image side lens group includes the third lens and the 4th lens, the third lens and the 4th lens
It is convex lens, the spherical surface of the spherical surface of the third lens and the 4th lens abuts against.
Further, the lens barrel includes the first lens barrel and the second lens barrel being connected, and is provided in second lens barrel
The image side lens group, first lens barrel are provided with object side lens group, the light far from one end of second lens barrel
Door screen is located at the junction of first lens barrel and second lens barrel.
The invention has the benefit that
Telecentric lens proposed by the present invention compared with prior art, can by being arranged coaxial light source inside lens barrel
Weakening of the semi-transparent semi-reflecting lens to intensity of illumination is avoided, the utilization rate to light is improved, so that intensity of illumination is improved,
Under same lighting condition, so that returning to the intensity of illumination come by object side lens improves 150%, be conducive to raising imaging effect.
Moreover, the fever that can be avoided light source is serious, the normal work of telecentric lens is influenced.In addition, compared with prior art, on lens barrel
It does not need additionally to open up light hole, reduces the difficulty of processing of lens barrel.
Detailed description of the invention
Fig. 1 is the cross-sectional view of telecentric lens provided by the invention；
Fig. 2 is the structural schematic diagram of coaxial light source provided by the invention；
Fig. 3 is the section view of optical tube provided in this embodiment.
In figure:
11, the first lens barrel；12, the second lens barrel；13, optical filtering cylinder；14, optical tube；141, the first taper type cylinder；1411,
One mounting groove；142, the second taper type cylinder；1421, the second mounting groove；143, hierarchic structure；
2, object side lens group；21, the first lens；22, the second lens；
3, coaxial light source；31, annular luminous part；311, annular circuit board；312, LED light；32, uniform light board；
4, diaphragm；
5, image side lens group；51, the third lens；52, the 4th lens.
Specific embodiment
To keep the technical problems solved, the adopted technical scheme and the technical effect achieved by the invention clearer, below
In conjunction with attached drawing and pass through specific embodiment to further illustrate the technical scheme of the present invention.It is understood that this place is retouched
The specific embodiment stated is used only for explaining the present invention rather than limiting the invention.It also should be noted that in order to just
Only the parts related to the present invention are shown in description, attached drawing and it is not all.
In the description of the present invention unless specifically defined or limited otherwise, term " connected ", " connection ", " fixation " are answered
It is interpreted broadly, for example, it may be being fixedly connected, may be a detachable connection, or is integral；It can be mechanical connection,
It can be electrical connection；It can be directly connected, the company inside two elements can also be can be indirectly connected through an intermediary
Logical or two elements interaction relationship.For the ordinary skill in the art, can be understood with concrete condition above-mentioned
The concrete meaning of term in the present invention.
In the present invention unless specifically defined or limited otherwise, fisrt feature second feature "upper" or "lower"
It may include that the first and second features directly contact, also may include that the first and second features are not direct contacts but pass through it
Between other characterisation contact.Moreover, fisrt feature includes the first spy above the second feature " above ", " above " and " above "
Sign is right above second feature and oblique upper, or is merely representative of first feature horizontal height higher than second feature.Fisrt feature exists
Second feature " under ", " lower section " and " following " include that fisrt feature is directly below and diagonally below the second feature, or is merely representative of
First feature horizontal height is less than second feature.
In the description of the present embodiment, term " on ", "lower", " right side ", etc. orientation or positional relationships be based on shown in attached drawing
Orientation or positional relationship, be merely for convenience of description and simplification operation, rather than the device or element of indication or suggestion meaning
It must have a particular orientation, be constructed and operated in a specific orientation, therefore be not considered as limiting the invention.In addition,
Term " first ", " second " are only used to distinguish between description, and have no special meaning.
Fig. 1 is the cross-sectional view of telecentric lens provided in this embodiment.As shown in Figure 1, present embodiments providing a kind of telecentricity
Camera lens, which includes lens barrel, and object side lens group 2, diaphragm 4 are disposed with from object plane side to image planes side, inside lens barrel
With image side lens group 5, diaphragm 4 is located at the focal position of object side lens group 2 and image side lens group 5.Telecentric lens further include coaxial
Light source 3, coaxial light source 3 include annular luminous part 31, and annular luminous part 31 is sheathed on diaphragm 4, and the axis of annular luminous part 31
Line is overlapped with the axis of diaphragm 4.The light issued by annular luminous part 31 is irradiated on object after object side lens group 2, with
Image side lens group 5, image side are reached by the through-hole that the light of object reflection passes through 4 center of diaphragm after the convergence of object side lens 2 afterwards
Light is extended to directional light and entered inside telecentric lens by lens group 5, facilitates Image Acquisition.
Specifically, lens barrel includes the first lens barrel 11 and the second lens barrel 12 being connected.Wherein, the first lens barrel 11 includes phase
First and second of connection, first and second is cylinder-like structure, and first diameter is straight less than second
Diameter, first is connected to the second lens barrel 12 far from second one end, and above-mentioned object side lens group 2 is provided in second.Second
Lens barrel 12 includes the third portion being connected and the 4th, and third portion is taper type tubular structure, and the 4th is cylinder-like structure, the
Four are connected between third portion and first, and the 4th diameter is equal to first diameter, are provided in the 4th above-mentioned
Image side lens group 5.Diaphragm 4 is located at the junction of the first lens barrel 11 and the second lens barrel 12.
In the present embodiment, object side lens group 2 includes two lens, respectively the first lens 21 and the second lens 22, the
One lens 21 and the second lens 22 are convex lens, and the spherical surface of the spherical surface of the first lens 21 and the second lens 22 abuts against, and
Two lens 22 are located between diaphragm 4 and the first lens 21.But the present embodiment is to the quantity of lens included by object side lens group 2
Without being limited thereto, in order to improve the clarity of imaging effect or imaging, object side lens group 2 may be provided with more than two lens, and
The type (convex lens or convex lens) and arrangement of lens are selected according to actual needs.
As shown in Figure 1, being directed toward image planes side by object plane side, optical filtering cylinder 13 and optical tube are disposed in the second lens barrel 12
14, optical filtering cylinder 13 is connected to optical tube 14.Wherein, above-mentioned diaphragm 4 is provided in optical filtering cylinder 13, annular luminous part 31 is set in filter
On light cylinder 13.The main function of diaphragm 4 is the stray light in the light for stopping to be returned by object side lens group 2, improves imaging effect
Fruit, diaphragm 4 are structure relatively common in the prior art, and details are not described herein, and diaphragm 4 is set in optical filtering cylinder 13, can
Reduce the stray light for passing through diaphragm 4 after object reflects.Fig. 2 is the structural schematic diagram of coaxial light source provided in this embodiment.Such as
Shown in Fig. 2, coaxial light source 3 includes above-mentioned annular luminous part 31 and uniform light board 32, wherein annular luminous part 31 includes loop circuit
Plate 311, annular circuit board 311 are sheathed on optical filtering cylinder 13, are radially provided with multi-turn from inside to outside on annular circuit board 311
LED light 312 is provided with three circle LED light 312 in the present embodiment on annular circuit board 311, first lap has 13 LED light
312, the second circle has 17 LED light 312, and third circle has 23 LED light 312, can be improved the sending of coaxial light source 3
Light concentricity so that the distribution of light is more uniform.But the present embodiment is not limited to the arrangement of LED light 312
This, the arrangement of LED light 312 can be selected according to actual needs, for example four circles or more are provided on annular circuit board 311
The LED light 312 of multi-turn, and the interval between two LED light 312 adjacent in each circle is configured according to actual needs.It is even
Tabula rasa 32 is sheathed on optical filtering cylinder 13, and is set to annular luminous part 31 towards the side of object space lens group 2, and utilization is evenly dispersed
Micro-size particles light scattering effect, linear light source or point light source are changed into area source so that the distribution of light is more uniform,
Uniform light board 32 is common structure in the prior art, and details are not described herein.
Fig. 3 is the cross-sectional view of optical tube provided in this embodiment.As shown in figure 3, optical tube 14 includes the first taper type cylinder
141 and the second taper type cylinder 142, on the axis direction of optical tube 14, the length of the first taper type cylinder 141 is less than the second frustum
The length of shape cylinder 142, the miner diameter end of the first taper type cylinder 141 are connected to the miner diameter end of the second taper type cylinder 142, the first conically shaped
141 bigger diameter end, which extends outwardly, is provided with the first mounting groove 1411, and part optical filtering cylinder 13 extend into the first mounting groove 1411, makes
It obtains optical filtering cylinder 13 and is connected to the first taper type cylinder 141, can be improved completely into arriving in optical tube 14 by the light of diaphragm 4
Imaging effect.The bigger diameter end of second conically shaped 142, which extends outwardly, is provided with the second mounting groove 1421, and image side lens group 5 is set to
In second mounting groove 1421.In this embodiment, the first taper type cylinder 141 and the second taper type cylinder 142 1 of optical tube 14 are constituted
Body machine-shaping, certainly in other embodiments, the first taper type cylinder 141 and the second taper type cylinder 142 can also split settings.
In addition, in order to further increase imaging effect, along the axis direction of optical tube 14, the first taper type cylinder 141 and
It is provided with multiple hierarchic structures 143 in a ring on the inner wall of two taper type cylinders 142, hierarchic structure 143 can be to entering
The stray light in light in optical tube 14 is weakened, and influence of the stray light to imaging effect is eliminated.Specifically, the first cone
Multiple hierarchic structures 143 on 142 inner wall of platform shape cylinder 141 and the second taper type cylinder can be spuious in optical tube 14 to entering
Light carries out multiple reflections, so that stray light is weakened by continuous until eliminating.141 He of above-mentioned diaphragm 4 and the first taper type cylinder
Hierarchic structure 143 on second taper type cylinder, 142 inner wall cooperates, and the stray light in the light in lens barrel is returned to object
Stopped and weakened, stray light is avoided to enter image side lens group 5, improves imaging effect.
In addition, in the present embodiment, above-mentioned image side lens group 5 equally includes two lens, respectively 51 He of the third lens
4th lens 52, the third lens 51 and the 4th lens 52 are convex lens, the ball of the spherical surface of the third lens 51 and the 4th lens 52
Face abuts against, and the third lens 51 are between the 4th lens 52 and diaphragm 4.But the present embodiment wraps image side lens group 5
The quantity of the lens included is without being limited thereto, in order to improve the clarity of imaging effect or imaging, there are two image side lens group 5 is settable
Above lens, and lens type (convex lens or concavees lens) and arrangement are selected according to actual needs.
To sum up, by being arranged coaxial light source 3 inside lens barrel, compared with prior art, semi-transparent semi-reflecting lens be can be avoided
Weakening to intensity of illumination improves the utilization rate to light, so that intensity of illumination is improved, in same lighting condition
Under so that by object side lens group 2 return come intensity of illumination improve 150%, be conducive to raising imaging effect.Moreover, can keep away
Exempt from coaxial light source 3 to generate heat serious problem, guarantees that telecentric lens can work normally for a long time.In addition, compared with prior art,
It does not need additionally to open up light hole on lens barrel, reduces the difficulty of processing of lens barrel.
Embodiment of above only elaborates that the basic principles and features of the invention, the present invention are not limited by above embodiment
System, without departing from the spirit and scope of the present invention, the invention also has various changes and changes, and these changes and changes are all
It falls into scope of the claimed invention.The claimed scope of the invention is by appended claims and its equivalent circle
It is fixed.
Claims (10)
1. a kind of telecentric lens, including lens barrel, which is characterized in that from object plane side to image planes side, be disposed in the lens barrel
Object side lens group (2), diaphragm (4) and image side lens group (5), the diaphragm (4) are located at object side lens group (2) and the picture
The focal position of side lens group (5), the telecentric lens further include coaxial light source (3), and the coaxial light source (3) includes annular hair
Light part (31), the annular luminous part (31) are sheathed on the diaphragm (4).
2. telecentric lens according to claim 1, which is characterized in that the annular luminous part (31) includes annular circuit board
(311), it is radially provided with multi-turn LED light (312) from the inside to the outside on the annular circuit board (311).
3. telecentric lens according to claim 1, which is characterized in that the coaxial light source (3) further includes uniform light board (32),
The uniform light board (32) is sheathed on the diaphragm (4), and is located at the annular luminous part (31) towards object side lens group
(2) side.
4. telecentric lens according to claim 1, which is characterized in that the telecentric lens further include being set to the lens barrel
Interior optical filtering cylinder (13), the diaphragm (4) are set in the optical filtering cylinder (13), and the annular luminous part (31) is sheathed on described
On optical filtering cylinder (13).
5. telecentric lens according to claim 4, which is characterized in that the telecentric lens further include being set to the lens barrel
Interior optical tube (14), described optical tube (14) one end are connected to the optical filtering cylinder (13), and it is saturating that the other end is provided with the image side
Microscope group (5).
6. telecentric lens according to claim 5, which is characterized in that the optical tube (14) includes the first taper type cylinder
(141) and the second taper type cylinder (142), the miner diameter end of the first taper type cylinder (141) are connected to the second taper type cylinder
(142) miner diameter end, the bigger diameter end of the first taper type cylinder (141), which extends outwardly, is provided with the first mounting groove (1411), portion
The optical filtering cylinder (13) is divided to be located in first mounting groove (1411), the bigger diameter end of the second taper type cylinder (142) is outside
Being extended has the second mounting groove (1421), and the image side lens group (5) is set in second mounting groove (1421).
7. telecentric lens according to claim 6, which is characterized in that the axis direction along the optical tube (14), it is described
Along multiple hierarchic structures (143) in a ring are provided with, multiple hierarchic structures (143) are configured the inner wall of optical tube (14)
To eliminate stray light.
8. telecentric lens according to claim 1, which is characterized in that object side lens group (2) includes the first lens
(21) and the second lens (22), first lens (21) and the second lens (22) are convex lens, first lens (21)
Spherical surface and the spherical surfaces of second lens (22) abut against.
9. telecentric lens according to claim 1, which is characterized in that the image side lens group (5) includes the third lens
(51) and the 4th lens (52), the third lens (51) and the 4th lens (52) are convex lens, the third lens (51)
Spherical surface and the spherical surfaces of the 4th lens (52) abut against.
10. telecentric lens according to claim 1, which is characterized in that the lens barrel includes the first lens barrel being connected
(11) and the second lens barrel (12) it, is provided with the image side lens group (5) in second lens barrel (12), first lens barrel (11)
One end far from second lens barrel (12) is provided with object side lens group (2), and the diaphragm (4) is located at first lens barrel
(11) and the junction of second lens barrel (12).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201910308269.9A CN109870790A (en) | 2019-04-17 | 2019-04-17 | A kind of telecentric lens |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201910308269.9A CN109870790A (en) | 2019-04-17 | 2019-04-17 | A kind of telecentric lens |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN109870790A true CN109870790A (en) | 2019-06-11 |
Family
ID=66922741
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201910308269.9A Pending CN109870790A (en) | 2019-04-17 | 2019-04-17 | A kind of telecentric lens |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN109870790A (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2021021864A (en) * | 2019-07-29 | 2021-02-18 | 株式会社ヴイ・エス・テクノロジ− | Lens barrel with built-in annular light source |
| CN113075846A (en) * | 2020-12-23 | 2021-07-06 | 深圳市安华光电技术有限公司 | Optical machine and projector |
Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN1754175A (en) * | 2003-02-26 | 2006-03-29 | 电科学工业公司 | Coaxial narrow angle dark field lighting |
| CN107238915A (en) * | 2017-04-30 | 2017-10-10 | 西京学院 | One kind disappears veiling glare doubly telecentric optical lens |
| CN208026949U (en) * | 2018-02-09 | 2018-10-30 | 瑞声科技(新加坡)有限公司 | A kind of camera lens module |
| CN209746256U (en) * | 2019-04-17 | 2019-12-06 | 东莞市神州视觉科技有限公司 | Telecentric lens |
-
2019
- 2019-04-17 CN CN201910308269.9A patent/CN109870790A/en active Pending
Patent Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN1754175A (en) * | 2003-02-26 | 2006-03-29 | 电科学工业公司 | Coaxial narrow angle dark field lighting |
| CN107238915A (en) * | 2017-04-30 | 2017-10-10 | 西京学院 | One kind disappears veiling glare doubly telecentric optical lens |
| CN208026949U (en) * | 2018-02-09 | 2018-10-30 | 瑞声科技(新加坡)有限公司 | A kind of camera lens module |
| CN209746256U (en) * | 2019-04-17 | 2019-12-06 | 东莞市神州视觉科技有限公司 | Telecentric lens |
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2021021864A (en) * | 2019-07-29 | 2021-02-18 | 株式会社ヴイ・エス・テクノロジ− | Lens barrel with built-in annular light source |
| JP7248244B2 (en) | 2019-07-29 | 2023-03-29 | 株式会社ヴイ・エス・テクノロジ－ | Lens barrel with built-in annular light source |
| CN113075846A (en) * | 2020-12-23 | 2021-07-06 | 深圳市安华光电技术有限公司 | Optical machine and projector |
| CN113075846B (en) * | 2020-12-23 | 2022-07-15 | 深圳市安华光电技术有限公司 | Optical machine and projector |
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