CN208999062U - A kind of lens focus measuring device - Google Patents
A kind of lens focus measuring device Download PDFInfo
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- CN208999062U CN208999062U CN201821674743.7U CN201821674743U CN208999062U CN 208999062 U CN208999062 U CN 208999062U CN 201821674743 U CN201821674743 U CN 201821674743U CN 208999062 U CN208999062 U CN 208999062U
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- microscope base
- light source
- guide rail
- measuring device
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- NJPPVKZQTLUDBO-UHFFFAOYSA-N novaluron Chemical compound C1=C(Cl)C(OC(F)(F)C(OC(F)(F)F)F)=CC=C1NC(=O)NC(=O)C1=C(F)C=CC=C1F NJPPVKZQTLUDBO-UHFFFAOYSA-N 0.000 claims abstract description 20
- 238000012545 processing Methods 0.000 claims abstract description 20
- 230000005540 biological transmission Effects 0.000 claims abstract description 4
- 238000005259 measurement Methods 0.000 description 4
- 238000001514 detection method Methods 0.000 description 3
- 230000008859 change Effects 0.000 description 2
- 238000013461 design Methods 0.000 description 2
- 238000010586 diagram Methods 0.000 description 2
- 238000003384 imaging method Methods 0.000 description 2
- 238000009434 installation Methods 0.000 description 2
- 201000009310 astigmatism Diseases 0.000 description 1
- 230000000694 effects Effects 0.000 description 1
- 230000005611 electricity Effects 0.000 description 1
- 230000006872 improvement Effects 0.000 description 1
- 238000004519 manufacturing process Methods 0.000 description 1
- 238000000034 method Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 230000003287 optical effect Effects 0.000 description 1
- 230000004044 response Effects 0.000 description 1
- 238000009738 saturating Methods 0.000 description 1
- 239000000126 substance Substances 0.000 description 1
- 230000001360 synchronised effect Effects 0.000 description 1
- 238000012360 testing method Methods 0.000 description 1
- 238000002834 transmittance Methods 0.000 description 1
- 230000000007 visual effect Effects 0.000 description 1
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Abstract
The utility model provides a kind of lens focus measuring device, belong to focometry field, including guide rail, pedestal, sliding block tooling, microscope base, light source processing mechanism and light source, guide rail is vertically equipped on pedestal, guide rail is equipped with can be along the sliding block tooling of guide rail vertical shift, sliding block tooling is connect with microscope base, microscope base is hollow cylinder, microscope base upper surface is equipped with PSD position sensor, lower part is equipped with semi-transparent semi-reflecting microscope base, light source is cylindrical, and it is provided with bit-avoiding slot, light source processing mechanism includes rotation baffle, rotation baffle middle-lower part is located in bit-avoiding slot, and it is equipped with running clearance therebetween, rotating baffle can be along own axis, rotation baffle is divided into two parts, half is shading light part, half is light transmission part, the light issued at light source, across light source processing mechanism, it is incident upon downwards on eyeglass to be measured through semi-transparent semi-reflecting lens, Eyeglass to be measured dissipates light beam to upslide, by semi-transparent semi-reflecting lens perspective to PSD position sensor.
Description
Technical field
The utility model belongs to focometry field, is related to a kind of lens focus measuring device.
Background technique
Lens focus measurement is the common detection of optics industry, has the focal length ability of high-acruracy survey camera lens, is high-precision
The indispensability of chemical apparatuses production is spent, camera lens is assembled by multiple eyeglasses and realizes focused images, and visual angle change meets real-life
The actual demand of every field allows each lens product to meet the important detection instrument of design requirement, in order to meet different eyeglasses
Testing requirements, it is necessary to according to the characteristic of eyeglass, optical path need to be redesigned to improve instrument, there is quite high difficulty, often
It detects a kind of eyeglass and just needs to repeat such operation, carry out highly difficult adjustment operation, sensor may also in detection instrument
The imaging is not clear or does not have imaging problem for appearance.
Utility model content
Problem to be solved in the utility model is to be to propose a kind of easy to operate, precision height, the fast camera lens of working efficiency
Focometry equipment.
To solve the above problems, the technical solution of the utility model is: a kind of lens focus measuring device includes guide rail, bottom
Seat, sliding block tooling, microscope base, light source processing mechanism and light source, the pedestal are equipped with guide rail, and the guide rail is equipped with can be along guide rail
The sliding block tooling of vertical shift, the sliding block tooling are connect with microscope base, and the microscope base is hollow cylinder, the microscope base upper surface
Equipped with PSD position sensor, lower part is equipped with semi-transparent semi-reflecting microscope base, and the light source carrier is cylindrical, and is provided with a slot, the light
Source processing mechanism is equipped with rotation baffle, and the rotation baffle lower part is set up separately in slot, and is equipped with running clearance therebetween, described
Rotation baffle can be divided into two parts along own axis, the rotation baffle, and half is shading light part, and half is transmittance section
Point, the light issued at the light source passes through light source processing mechanism, is incident upon downwards on eyeglass to be measured through semi-transparent semi-reflecting lens, described
Eyeglass to be measured dissipates light beam to upslide, by semi-transparent semi-reflecting lens perspective to PSD position sensor.
Further, it on the vertical firm banking of the guide rail, is fixedly connected with mode and is fixed for bolt.
Further, encoder is equipped in the guide rail.
Further, the semi-transparent semi-reflecting microscope base is hollow square, is located at microscope base bottom, the semi-transparent semi-reflecting microscope base lower end
Face is equipped with microscope base bottom cover, and the semi-transparent semi-reflecting lens are inclined in semi-transparent semi-reflecting microscope base.
Further, the light source processing mechanism is fixed on microscope base, and the light source processing mechanism is equipped with feeding motor, institute
Feeding motor driven rotation baffle is stated to rotate in light source carrier slot.
Further, the center line of the eyeglass to be measured, semi-transparent semi-reflecting lens and PSD position sensor and microscope base axial line weight
Close setting.
Further, the pedestal is equipped with chuck, and the chuck is equipped with eyeglass to be measured, and the pedestal lower end surface is equipped with
Rubber pad.
Further, the PSD position sensor principle is, when light beam is fallen on PSD, corresponding to the charge of light energy
It is generated in incidence point, charge is collected by p-type resistive layer by electrode；P-type layer is the resistive layer of uniform one, is collected by electrode
Photoelectric current be inversely proportional with incidence point and electrode spacing；When alignment position is moved in measurement range, light beam and the position PSD are passed
The distance of two interpolar of sensor changes, and so that two-stage is issued electric current and changes with the variation of its facula position, therefore passes through measurement
The size of the electric grade output of sensor two, can know that PSD position sensor is opposite with the certain point position being aligned on object plane
It answers.
Compared with the existing technology, the utility model has the following advantages that and technical effect:
1, this camera lens focal length measurement equipment application PSD position sensor is surveyed relative to usually used position sensor
Measuring focal length equipment has the characteristics of progress is high, high resolution, fast response time.
2, when microscope base is moved up and down along guide rail, guide rail inner encoder records microscope base position in real time, accurately calculates camera lens to be measured
Focal length.
3, the rubber pad of pedestal lower end surface reduces the friction on pedestal and ground, extends pedestal service life.
Detailed description of the invention
The attached drawing for constituting a part of the utility model is used to provide a further understanding of the present invention, this is practical new
The illustrative embodiments and their description of type are not constituteed improper limits to the present invention for explaining the utility model.?
In attached drawing:
Fig. 1 is a kind of structural schematic diagram of lens focus measuring device of the utility model；
Fig. 2 is a kind of schematic front view of lens focus measuring device of the utility model；
Fig. 3 is a kind of partial schematic diagram of lens focus measuring device of the utility model.
Description of symbols:
1- guide rail；2-PSD position sensor；3- microscope base；4- semi-transparent semi-reflecting lens；5- light source processing mechanism；6- light source；7-
Sliding block tooling；8- eyeglass to be measured；9- pedestal；10- chuck；11- feeds motor；12- rubber pad；13- rotates baffle；14- half is anti-
Semi-transparent microscope base；15- encoder；16- microscope base bottom cover；17- slot.
Specific embodiment
It should be noted that in the absence of conflict, the feature in the embodiments of the present invention and embodiment can
To be combined with each other.
In the description of the present invention, it should be understood that term " center ", " longitudinal direction ", " transverse direction ", "upper", "lower",
The orientation or positional relationship of the instructions such as "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outside" is
It is based on the orientation or positional relationship shown in the drawings, is merely for convenience of describing the present invention and simplifying the description, rather than indicate
Or imply that signified device or element must have a particular orientation, be constructed and operated in a specific orientation, therefore cannot understand
For limitations of the present invention.In addition, term " first ", " second " etc. are used for description purposes only, and should not be understood as indicating
Or it implies relative importance or implicitly indicates the quantity of indicated technical characteristic." first ", " second " etc. are defined as a result,
Feature can explicitly or implicitly include one or more of the features.It is in the description of the present invention, unless another
It is described, the meaning of " plurality " is two or more.
In the description of the present invention, it should be noted that unless otherwise clearly defined and limited, term " is pacified
Dress ", " connected ", " connection " shall be understood in a broad sense, for example, it may be being fixedly connected, may be a detachable connection, or integrally
Connection；It can be mechanical connection, be also possible to be electrically connected；Can be directly connected, can also indirectly connected through an intermediary,
It can be the connection inside two elements.For the ordinary skill in the art, on being understood by concrete condition
State the concrete meaning of term in the present invention.
The utility model will be described in detail below with reference to the accompanying drawings and embodiments.
As depicted in figs. 1 and 2, a kind of lens focus measuring device, including guide rail 1, pedestal 9, sliding block tooling 7, microscope base 3,
Light source processing mechanism 5 and light source 6, pedestal 9 are equipped with guide rail 1, and guide rail 1 is equipped with can be along the sliding block tooling of guide rail vertical shift
7, sliding block tooling 7 is connect with microscope base 3, and microscope base 3 is hollow cylinder, and 3 upper surface of microscope base is equipped with PSD position sensor 2, lower part
Equipped with semi-transparent semi-reflecting microscope base 14,6 carrier of light source is cylindrical, and is provided with a slot 17, and light source processing mechanism 5 is equipped with rotation baffle
13, rotation baffle lower part is set up separately in slot 17, and is equipped with running clearance therebetween, and rotation baffle 13 can turn along own axes
Dynamic, rotation baffle 13 divides for two parts, and half is shading light part, and half is light transmission part, and the light issued at light source 6 passes through light
Source processing mechanism 5 is incident upon downwards on eyeglass 8 to be measured through semi-transparent semi-reflecting lens 4, and eyeglass 8 to be measured dissipates light beam to upslide, through more than half
In the saturating perspective to PSD position sensor 2 of semi-reflective mirror 4, hot spot is generated, there are high-precision, high resolution features.
Preferably, it on the vertical firm banking 9 of guide rail 1, is fixedly connected with mode and is fixed for bolt, it is easy for installation.
Preferably, encoder 15 is equipped in guide rail 1, it is accurate to record 3 shift position of microscope base.
Preferably, semi-transparent semi-reflecting microscope base 14 is hollow square, is located at 3 bottom of microscope base, semi-transparent semi-reflecting 14 lower end surface of microscope base is set
There is microscope base bottom cover 16, semi-transparent semi-reflecting lens 4 are inclined in semi-transparent semi-reflecting microscope base 14, and collimated light beam passes through semi-transparent semi-reflecting twice
Mirror 4 projects PSD position sensor 2.
Preferably, light source processing mechanism 5 is fixed on microscope base 3, and light source processing mechanism 5 is equipped with feeding motor 11, feeding electricity
The driving rotation baffle 13 of machine 11 rotates in 6 carrier channels 17 of light source, and the collimated light beam that light source 6 issues constantly is hidden by rotation baffle 13
There are two kinds of quick alternate states in gear.
Preferably, the 3 structure axial line of center line and microscope base of eyeglass 8 to be measured, semi-transparent semi-reflecting lens 4 and PSD position sensor 2
It is overlapped setting, makes to be incident upon collimated light beam on eyeglass 8 to be measured and accurately has an X-rayed on PSD position sensor 2.
Preferably, pedestal 9 is equipped with chuck 10, and chuck 10 is equipped with eyeglass 8 to be measured, and 9 lower end surface of pedestal is equipped with rubber pad
12, make the fixed eyeglass 8 to be measured of chuck 10, rubber pad 12 reduces the friction of pedestal 9 and ground.
When focal length is tested, about 1 guide rail of operation quickly moves a cycle, meanwhile, it is recorded by the encoder 15 in guide rail 1
Camera lens position, light source 6 is horizontal to issue collimated light beam, and rotation baffle 13 drives in feeding motor 11 in light source processing mechanism 5
Lower high speed rotation, baffle are general light transmission, the other half opaque design, therefore, the horizontal collimated light beam constantly quilt issued of light source 6
Rotation baffle 13 blocks, and so that collimated light beam two kinds of quick alternate states is occurred, it may be assumed that the state that is partially blocked and not to be blocked
State, with two kinds, quickly alternately state is irradiated in microscope base on semi-transparent semi-reflecting lens 4 collimated light beam, horizontality collimated light beam warp
The collimated light beam that semi-transparent semi-reflecting lens 4 become to irradiate straight down is crossed, until 8 surface of eyeglass to be measured, eyeglass 8 to be measured is by collimated light beam
It is dissipated to upslide, by the perspective to PSD position sensor 2 of semi-transparent semi-reflecting lens 4, generating hot spot in microscope base 3, meanwhile, the position PSD
Sensor 2 measures the center of hot spot in real time, and direction is unaffected when throwing astigmatism line passes through semi-transparent semi-reflecting lens 4, due to collimated light beam
Two states quickly replace, when collimated light beam is blocked state in part, hot spot caused by non-shield portions collimated light beam
Center is in hot spot center when not being blocked state with collimated light beam, is alternately adjacent appearance, generated
Facula position center is significantly different, since the center for the collimated light beam for projecting camera lens is alternately to change, projects by camera lens
Light be similarly that center alternately changes, the spot center generated under two states is synchronized to record and compare, phase
When adjacent hot spot minimum, when adjacent spots position gap is also minimum, the lens location of encoder 15 is mirror to be measured in guide rail 1 this moment
The focal position of piece 8,1 position of guide rail when can measure focal length minimum accordingly, and according to the position of PSD position sensor 2, it is to be measured
The installation site of eyeglass 8 calculates focal length.
The above is only the preferred embodiment of the utility model only, is not intended to limit the utility model, all at this
Within the spirit and principle of utility model, any modification, equivalent replacement, improvement and so on should be included in the utility model
Protection scope within.
Claims (7)
1. a kind of lens focus measuring device, it is characterised in that: including guide rail (1), pedestal (9), sliding block tooling (7), microscope base
(3), light source processing mechanism (5) and light source (6) are vertically equipped with guide rail (1) on the pedestal (9), and the guide rail (1) is equipped with can
Along the sliding block tooling (7) of guide rail (1) vertical shift, the sliding block tooling (7) connect with microscope base (3), and the microscope base (3) is hollow
Cylinder, microscope base (3) upper surface are equipped with PSD position sensor (2), and lower part is equipped with semi-transparent semi-reflecting microscope base (14), the light
Source (6) is cylindrical, and is provided with bit-avoiding slot (17), and the light source processing mechanism (5) includes rotation baffle (13), the rotation gear
Piece (13) middle-lower part is located in bit-avoiding slot (17), and is equipped with running clearance therebetween, and the rotation baffle (13) can be along certainly
Body axis rotation, the rotation baffle (13) are divided into two parts, and half is shading light part, and half is light transmission part, the light source
(6) light issued at is passed through light source processing mechanism (5), is incident upon downwards on eyeglass to be measured (8) through semi-transparent semi-reflecting lens (4), described
Eyeglass (8) to be measured dissipates light beam to upslide, by semi-transparent semi-reflecting lens (4) perspective to PSD position sensor (2).
2. a kind of lens focus measuring device according to claim 1, it is characterised in that: the guide rail (1) is vertically fixed
On pedestal (9), it is fixedly connected with mode and is fixed for bolt.
3. a kind of lens focus measuring device according to claim 1, it is characterised in that: be equipped with and compile in the guide rail (1)
Code device (15).
4. a kind of lens focus measuring device according to claim 1, it is characterised in that: the semi-transparent semi-reflecting microscope base (14)
It is located at microscope base (3) bottom for hollow square, semi-transparent semi-reflecting microscope base (14) lower end surface is equipped with microscope base bottom cover (16), described semi-transparent
Semi-reflective mirror (4) is inclined in semi-transparent semi-reflecting microscope base (14).
5. a kind of lens focus measuring device according to claim 1, it is characterised in that: the light source processing mechanism (5)
It is fixed on microscope base (3), the light source processing mechanism (5) is equipped with feeding motor (11), feeding motor (11) the driving rotation
Baffle (13) rotation in light source (6) carrier channels (17).
6. a kind of lens focus measuring device according to claim 1, it is characterised in that: the eyeglass (8) to be measured, semi-transparent
Semi-reflective mirror (4) is overlapped setting with the center line of PSD position sensor (2) and microscope base (3) axial line.
7. a kind of lens focus measuring device according to claim 1, it is characterised in that: the pedestal (9) is equipped with card
Disk (10), the chuck (10) are equipped with eyeglass to be measured (8), and pedestal (9) lower end surface is equipped with rubber pad (12).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201821674743.7U CN208999062U (en) | 2018-10-16 | 2018-10-16 | A kind of lens focus measuring device |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201821674743.7U CN208999062U (en) | 2018-10-16 | 2018-10-16 | A kind of lens focus measuring device |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN208999062U true CN208999062U (en) | 2019-06-18 |
Family
ID=66803810
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201821674743.7U Withdrawn - After Issue CN208999062U (en) | 2018-10-16 | 2018-10-16 | A kind of lens focus measuring device |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN208999062U (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109186961A (en) * | 2018-10-16 | 2019-01-11 | 天津中精微仪器设备有限公司 | A kind of lens focus measuring device |
| CN109186961B (en) * | 2018-10-16 | 2024-07-09 | 天津中精微仪器设备有限公司 | Lens focal length measuring equipment |
-
2018
- 2018-10-16 CN CN201821674743.7U patent/CN208999062U/en not_active Withdrawn - After Issue
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109186961A (en) * | 2018-10-16 | 2019-01-11 | 天津中精微仪器设备有限公司 | A kind of lens focus measuring device |
| CN109186961B (en) * | 2018-10-16 | 2024-07-09 | 天津中精微仪器设备有限公司 | Lens focal length measuring equipment |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| GR01 | Patent grant | ||
| GR01 | Patent grant | ||
| AV01 | Patent right actively abandoned |
Granted publication date: 20190618 Effective date of abandoning: 20240709 |
|
| AV01 | Patent right actively abandoned |
Granted publication date: 20190618 Effective date of abandoning: 20240709 |