CN206628173U - A kind of laboratory apparatus for measuring thin Concave Mirrors Focus - Google Patents
A kind of laboratory apparatus for measuring thin Concave Mirrors Focus Download PDFInfo
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- CN206628173U CN206628173U CN201720219442.4U CN201720219442U CN206628173U CN 206628173 U CN206628173 U CN 206628173U CN 201720219442 U CN201720219442 U CN 201720219442U CN 206628173 U CN206628173 U CN 206628173U
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Abstract
It the utility model is related to a kind of Optical measurement experiments instrument, it is principle that one kind, which is proposed, based on object distance image distance method, imaging facula is caught using CCD camera, accurate size, the intensity for judging imaging facula on numerical value, image, thin lens imaging law can also be shown while quickly can accurately measuring clear and intuitively, and aid in student to deepen the understanding to imaging law, realize that automatic, manual both of which measures the laboratory apparatus of thin Concave Mirrors Focus, including：Spot light, thin convex lens component, thin concavees lens component, as screen, cone, shell, movable rail, adjust lever, transmission device, infrared distance measuring device, display screen, cpu controller.
Description
Technical field
A kind of Optical measurement experiments instrument is the utility model is related to, is specifically related to a kind of object distance image distance method that is based on as original
Reason, observation imaging facula situation is caught using CCD camera, can realize that automatic, manual both of which measures thin Concave Mirrors Focus
Laboratory apparatus.
Background technology
In optical field, thin lens is a kind of lens center thickness lens more much smaller than the focal length of lens or radius of curvature.
The important component that lens imaging belongs in geometric optics, for university student, understand lens image formation rule, be familiar with lens into
As principle, the measuring method for grasping focal distance of thin convex lens is the basic demand of optics study.
At present, the instrument of the thin Concave Mirrors Focus of measurement used has a lot, mainly there is two classes：One kind is that automatic measurement is set
Standby, the measurement accuracy of this quasi-instrument is high, multiple functional, but can not fully show lens image formation rule；Another kind of is manual
Measuring apparatus, this quasi-instrument are the instruments mainly used in university physicses Experimental Optical teaching demonstration, enable student to lens
Imaging law has further insight, improve to optics study interest according to eyes, but due in measurement process it is artificial because
The influence of element judges that deviation occur causes the degree of accuracy relatively low to imaging clearly situation, and so not only the learning initiative of student is produced
It is raw to influence even throw doubt upon to the accuracy of imaging law.
The utility model proposes primarily directed to problem above, it is proposed that one kind is principle based on object distance image distance method, profit
Imaging facula is caught with CCD camera, accurate size, the intensity for judging imaging facula, quickly can accurately be surveyed on numerical value, image
Thin lens imaging law can also be shown while amount clear and intuitively, and aids in student to deepen the understanding to imaging law,
Realize that automatic, manual both of which measures the laboratory apparatus of thin Concave Mirrors Focus.
Utility model content
A kind of laboratory apparatus for measuring thin Concave Mirrors Focus is the utility model is related to, including：Spot light, thin convex lens group
Part, thin concavees lens component, as screen, cone, shell, movable rail, adjust lever, transmission device, infrared distance measuring device, display
Screen, cpu controller.
Described spot light includes：Base, support, light source frame, LED lamp bead and light hole, wherein described LED lamp bead
Described spot light center is placed in, described light hole is located at the antetheca center of described spot light.
Described thin convex lens component includes：Base, support, lens frame and thin convex lens, wherein described thin convex lens
Focal length be known.
Described thin concavees lens component includes：Base, support, lens frame and thin concavees lens to be measured.
Described picture screen includes：Base, support, as mask, as screen board and CCD modules, wherein described CCD modules are attached
On described picture screen board, the inwall as mask is provided with screw thread, and described base is provided with raised gear line.
Described cone is provided with screw thread, and described screw thread matches with the screw thread as mask, and described
The internal diameter of cone is with described as the internal diameter of mask is identical.
Described movable rail has four support posts and two adjusting posts, and described support post is respectively placed in bottom
Corner, described adjusting post are respectively placed in the both ends of central axis, and each support post is highly identical and vertical higher than regulation
The height of post.
Described shell provides for each part of instrument and holds space, and the axial centerline at internal both ends respectively has a projection
Circular abutment, and described circular abutment highly less than described movable rail support post height.
Described regulation lever is provided with a circular port and a straight trough mouth, wherein the aperture of described circular port and institute
The diameter of the adjusting post for the movable rail stated is identical, the circular abutment diameter phase of described straight width of rebate and described shell
Together, the thickness of described regulation lever is less than the height of the support post of described movable rail.
Described transmission device includes：Motor, gear and transmission belt, wherein described transmission belt is provided with gear line, institute
Gear line, the gear line of described picture screen base on the transmission belt stated match with described gear.
Described infrared distance measuring device includes infrared distance measurement transmitter and each two of infrared distance measurement receiver, wherein described
Two infrared distance measurement transmitters are arranged on the base transverse direction axis of described spot light, and described two infrared distance measurements receive
Device is separately positioned on the horizontal axis of the base of described thin concavees lens component and the base of described picture screen.
Described display screen is provided with image display area and numerical value viewing area, wherein described image display area content
Have：Hot spot pattern and as shield center optical power distribution situation switching show that the distribution curve that luminous power changes with object distance is described
Numerical value viewing area in have：Object space, image point position, lens position and the focal length being calculated.
Described cpu controller is the central controller of described laboratory apparatus, and it is responsible for all of the laboratory apparatus
Data processing and signal transacting.
The support height of the support height of described thin concavees lens component and described spot light, described thin convex lens group
The support height of part, the support height of described picture screen are identicals, and ensure described thin concavees lens, described spot light,
Described thin convex lens, the photocentre of described picture screen are in sustained height.
The screw thread of described cone with described picture screen as the screw thread of mask inwall matches, for shield portions
The external world enters the light of the CCD modules of described picture screen.
Described movable rail is connected with described shell by described regulation lever, and the regulation of described movable rail is vertical
Post is placed in the circular hole of described regulation lever, and the circular abutment of described shell is placed in the straight trough mouth of described regulation lever
It is interior.
The panel of described cpu controller is provided with power key, manual measurement button and automatic measurement button.
Described cpu controller further comprises：Energy supply control module, drive apparatus control module, infrared distance measurement control
Module, CCD control modules, focal length computing module, data acquisition module, display control module, crystal oscillating circuit, reset circuit,
CPU。
Described energy supply control module is responsible for the power supply of all parts of the laboratory apparatus described in drive control；Described biography
Dynamic control module is used to control transmission operation；Described infrared distance measurement control module be used for control infrared distance measurement transmitter with
The signal transmission of infrared distance measurement receiver；Described CCD control modules are used to control the collection of CCD signals, transmission；Described
Focal length computing module is responsible for calculating thin Concave Mirrors Focus using measurement data；Described display control module is used to regulate and control display
The display of numerical value and image on panel；Described CPU uses STC89C54 cake cores.
Under automatic measurement pattern, the first step, thin convex lens are placed, it is more than Jiao of itself the distance between with spot light
Away from；Second step, infrared distance measurement control module, drive apparatus control module, display control module, CCD control modules and data
Acquisition module starts, and motor-driven gear transmission belt makes as screen movement, acquisition and recording during this luminous power with as screen position
Change curve is simultaneously shown that the picture screen position corresponding to peak of curve can also be given in display to be shown, i.e. object position by display screen
Put x1；3rd step, thin concavees lens are placed on thin convex lens and as between screen, infrared distance measurement control module, display control mould
Block starts, and display shows concavees lens position, i.e. lens position O；4th step, infrared distance measurement control module, transmission device control
Module, display control module, CCD control modules and data acquisition module start, and motor-driven gear transmission belt makes as screen moves
Dynamic, luminous power is with as shielding the change curve of position and being shown by display screen during this for acquisition and recording, corresponding to peak of curve
Shown as screen position can also be given in display, i.e. image point position x2；5th step, focal length computing module utilize formulaObtain thin Concave Mirrors Focus f.
Manual measurement pattern is on the basis of automatic measurement pattern, and the mobile picture that changes shields position manually, and switches observation
Hot spot is shown with as shielding center light power diagram picture, finding two positions of maximum optical power, i.e. object space x1And image point position
x2, luminous power that automatic mode measures is may be referred to two peaks on object distance change curve, emphatically measurement of comparison two
Luminous power near individual peak, then according to formulaThin Concave Mirrors Focus is calculated.
The purpose of design of manual measurement pattern is：Premised on accurately measuring thin Concave Mirrors Focus, student can be allowed close
From hands-on, by observing imaging facula pattern and the distribution situation as screen center luminous power, it is familiar with luminous power and becomes with object distance
The distribution curve of change, further understand the imaging law of thin concavees lens.
The measurement for carrying out thin Concave Mirrors Focus using the utility model has following items advantage：
1. light intensity is detected by way of numerical value, image are combined, the accurate readability for judging imaging, from
And effectively improve the measurement accuracy of thin concavees lens.
2. the distribution curve that imaging facula pattern, the distributed image as shielding center luminous power and luminous power change with object distance
Thin lens imaging law can be shown clear and intuitively.
3. using measurement pattern that is manual, being combined automatically, thin Concave Mirrors Focus easily and fast, is accurately obtained, while
Understanding of the student to thin lens imaging law can be deepened.
Brief description of the drawings
Fig. 1 the utility model instrument overall structure diagram Fig. 9 display screen front views
Fig. 2 the utility model instrument overall structure front view Figure 10 movable rail right views
Fig. 3 the utility model instrument overall structure longitudinal sectional drawing Figure 11 cpu controller front views
Fig. 4 the utility model instrument overall structure transverse cross-sectional view Figure 12 hot spot patterns
Fig. 5 spot light schematic diagrames Figure 13 is as screen center optical power distribution
Fig. 6 thin convex lens schematic diagram Figure 14 luminous powers are with object distance change curve
The circuit module figure of the thin concavees lens schematic diagram Figure 15 cpu controllers of Fig. 7
Fig. 8 is as screen and cone schematic diagram Figure 16 automatic measurement model process figures
Label declaration：
1：Spot light, 1-1：Base, 1-2：Support, 1-3：Spot light frame, 1-4：LED lamp bead, 1-5：Light hole
2：Thin convex lens, 2-1：Base, 2-2：Support, 2-3：Lens frame, 2-4：Standard thin convex lens
3：Thin concavees lens, 3-1：Base, 3-2：Support, 3-3：Lens frame, 3-4：Thin concavees lens to be measured
4：As screen, 4-1：Base, 4-2：Support, 4-3：As mask, 4-4：As screen board, 4-5：CCD modules, 4-6：Screw thread,
4-7：Gear line
5：Cone, 5-1：Screw thread
6：Shell, 6-1：Circular abutment
7：Movable rail, 7-1：Support post, 7-2：Adjusting post
8：Adjust lever, 8-1：Straight trough mouth, 8-2：Circular port
9：Transmission device, 9-1：Gear, 9-2：Transmission belt, 9-3：Motor
10：Infrared distance measuring device, 10-1：Infrared distance measurement transmitter, 10-2：Infrared distance measurement receiver
11：Display, 11-1：Hot spot/luminous power viewing area, 11-2：Curve viewing area, 11-3：Object space numerical value shows
Show area, 11-4：Image point position numerical value viewing area, 11-5：Lens position numerical value viewing area, 11-6：Focal length numerical value viewing area, 11-
7：Calculate button, 11-8：Switching key
12：Cpu controller, 12-1：Power button, 12-2：Manual measurement button, 12-3：Automatic measurement button
Embodiment
The utility model is related to and propose one kind based on object distance image distance method is principle, and imaging facula is caught using CCD camera,
Accurate size, the intensity for judging imaging facula on numerical value, image, it can realize that automatic, manual both of which measurement is thin recessed
The laboratory apparatus of mirror focal length, embodiment are as follows：
First, the focal length of thin concavees lens is accurately measured using automatic measurement pattern：
The first step：Place thin convex lens：According to mode as shown in Figure 4 stir regulation lever 8, by thin convex lens 2 be put into
In movable rail 7, regulation thin convex lens 2 position makes the focal length that its distance between spot light 1 is more than standard thin convex lens 2-4,
Then regulation lever 8 is reversely stirred by mode as shown in Figure 4, resets movable rail 7.
Second step：Determine object space：Click on the panel power button 12-1 of cpu controller 12 and automatic measurement button 12-
3, as screen 4 moves in movable rail 7 under transmission belt 9-2 driving, during detecting this as the CCD modules 4-5 on screen 4
Optical power change situation, and in each respective regions display image of display 11, luminous power can be in song with object distance change curve
Shown in the 11-2 of line viewing area, as solid line is shown in Figure 14, wherein position corresponding to peak value is object space x1, its numerical values recited
Can be by being provided in object space numerical value viewing area 11-3.
3rd step：Place thin concavees lens：According to mode as shown in Figure 4 stir regulation lever 8, by thin concavees lens 3 be put into
In movable rail 7, thin concavees lens 3 are located at thin convex lens 2 and as between screen 4, then reversely stirring tune by mode as shown in Figure 4
Lever 8 is saved, resets movable rail 7, the thin position of concavees lens 3 can be remembered by being provided in lens position numerical value viewing area 11-5
For O.
4th step：Determine image point position：Automatic measurement button 12-3 on the panel of cpu controller 12 is clicked on, as screen 4 is being driven
Moved under driving with 9-2 in movable rail 7, the optical power change feelings during this are detected as the CCD modules 4-5 on screen 4
Condition, and can be in the 11-2 of curve viewing area with object distance change curve in each respective regions display image of display 11, luminous power
It has been shown that, as dotted line is shown in Figure 14, wherein position corresponding to peak value is image point position x2, its numerical values recited can be by image point position number
Provided in the 11-4 of value viewing area.
5th step：As a result export：Measure resulting hot spot pattern as shown in figure 12 and as shown in fig. 13 that as screen
Center optical power distribution situation can be on display 11 hot spot/luminous power viewing area 11-1 show, click on switching key 11-8
Switching observation image as needed, click on and calculate button 11-7, focal length computing module starts, with reference to above step gains position
Put x1, image point position x2And lens position O, according to formula Thin Concave Mirrors Focus f is obtained, and in focal length numerical value
Shown in the 11-6 of viewing area.
Then, manual measurement pattern is introduced with reference to the image and result of automatic measurement：
The first step：It is adjusted to manual measurement：Regulation pin 8 is rotated according to direction as shown in Figure 4, makes movable rail 7 to the right
It is mobile, now as the gear line 4-7 on screen 4 separates with transmission belt 9-2.
Second step：Manual measurement：The manual measurement button 12-2 on the panel of cpu controller 12 is clicked on, for following two
Situation is mobile as the position of screen 4 manually respectively, observes the figure and numerical value change situation on display 11：
The first situation：Optical instrument in movable rail 7 has：Spot light 1, thin convex lens 2, as screen 4；
Second of situation：Optical instrument in movable rail 7 has：Spot light 1, thin convex lens 2, thin concavees lens 3, as screen 4.
3rd step：DATA REASONING is with calculating：The luminous power shown obtained by observation automatic measurement in the 11-2 of curve viewing area
With object distance change curve, as shown in figure 14, with reference in the object distance position movement corresponding to peak of curve as screen 4, and by hot spot/light
11-1 switchings in power viewing area are shown as, as screen center optical power distribution, as shown in Figure 13, finding and recording in second step two kinds
In the case of maximum optical power when numerical value viewing area numerical value, i.e., the numerical value x that object space numerical value viewing area 11-3 is shown1, as
The numerical value x that point position numerical value viewing area 11-4 is shown2, observe and record the now position where thin concavees lens 3, i.e. lens position
The numerical value O that numerical value viewing area 11-5 is shown, according to formulaThin Concave Mirrors Focus f is calculated.
The LED of spot light uses red-light LED lamp bead in the utility model, and infrared distance measuring device uses
GP2D12 type infrared distance sensors, CCD modules use TSL1401 type ccd sensors, and CPU uses STC89C54 cores
Piece, motor use STP-42D2060 type stepper motors.Above-described hardware material is the common model of this area, and is only
Preferred embodiment of the present utility model, is not imposed any restrictions to the present invention, every real to more than according to the utility model in essence
Any simple modification, change and equivalent structure transformation that example is made are applied, still falls within the protection of technical solutions of the utility model
In the range of.
Claims (1)
- A kind of 1. laboratory apparatus for measuring thin Concave Mirrors Focus, it is characterised in that including：Spot light, thin convex lens component are thin recessed Lens subassembly, as screen, cone, shell, movable rail, adjust lever, transmission device, infrared distance measuring device, display screen, CPU Controller, whereinDescribed spot light includes：Base, support, light source frame, LED lamp bead and light hole, wherein described LED lamp bead is placed in institute The spot light center stated, described light hole are located at the antetheca center of described spot light；Described thin convex lens component includes：Base, support, lens frame and thin convex lens, wherein Jiao of described thin convex lens Away from being known；Described thin concavees lens component includes：Base, support, lens frame and thin concavees lens to be measured；Described picture screen includes：Base, support, as mask, as screen board and CCD modules, wherein described CCD modules are attached to institute On the picture screen board stated, the inwall as mask is provided with screw thread, and described base is provided with raised gear line；Described cone is provided with screw thread, and described screw thread matches with the screw thread as mask, and described shading The internal diameter of cylinder is with described as the internal diameter of mask is identical；Described movable rail has four support posts and two adjusting posts, and described support post is respectively placed in bottom four Angle, described adjusting post are respectively placed in the both ends of central axis, and each support post is highly identical and is higher than adjusting post Height；Described shell provides for each part of instrument and holds space, and the axial centerline at internal both ends respectively has a raised circle Shape column, and described circular abutment is highly less than the height of the support post of described movable rail；Described regulation lever is provided with a circular port and a straight trough mouth, wherein the aperture of described circular port with it is described The diameter of the adjusting post of movable rail is identical, and described straight width of rebate is identical with the circular abutment diameter of described shell, The thickness of described regulation lever is less than the height of the support post of described movable rail；Described transmission device includes：Motor, gear and transmission belt, wherein described transmission belt is provided with gear line, it is described Gear line, the gear line of described picture screen base on transmission belt match with described gear；Described infrared distance measuring device includes infrared distance measurement transmitter and each two of infrared distance measurement receiver, wherein described two Infrared distance measurement transmitter is arranged on the base transverse direction axis of described spot light, described two infrared distance measurement receivers point It is not arranged on the horizontal axis of the base of described thin concavees lens component and the base of described picture screen；Described display screen is provided with image display area and numerical value viewing area, wherein having in described image display area： Hot spot pattern and as shield center optical power distribution situation switching show that the distribution curve that luminous power changes with object distance is described Numerical value has in viewing area：Object space, image point position, lens position and the focal length being calculated；Described cpu controller is the central controller of described laboratory apparatus, and it is responsible for all numbers of the laboratory apparatus According to processing and signal transacting；The support height of the support height of described thin concavees lens component and described spot light, described thin convex lens component Support height, the support height of described picture screen are identicals, and ensure described thin concavees lens, described spot light, described Thin convex lens, the photocentre of described picture screen be in sustained height；The screw thread of described cone with described picture screen as the screw thread of mask inwall matches, it is extraneous for shield portions Into the light of the CCD modules of described picture screen；Described movable rail is connected with described shell by described regulation lever, and described movable rail adjusting post is put In in the circular hole of described regulation lever, the straight trough that the circular abutment of described shell is placed in described regulation lever is intraoral；The panel of described cpu controller is provided with power key, manual measurement button and automatic measurement button；Described cpu controller further comprises：Energy supply control module, drive apparatus control module, infrared distance measurement control module, CCD control modules, focal length computing module, data acquisition module, display control module, crystal oscillating circuit, reset circuit, CPU.
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| CN201720219442.4U CN206628173U (en) | 2017-03-08 | 2017-03-08 | A kind of laboratory apparatus for measuring thin Concave Mirrors Focus |
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Cited By (9)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN107705684A (en) * | 2017-11-27 | 2018-02-16 | 牡丹江师范学院 | A kind of Optical-Physics Experiment device |
| CN108510847A (en) * | 2018-04-09 | 2018-09-07 | 朱言哲 | A kind of high school student's lever used for physics learning aids |
| CN108597332A (en) * | 2018-06-14 | 2018-09-28 | 黄永怀 | A kind of convex lens experimental provision |
| CN110296819A (en) * | 2019-07-31 | 2019-10-01 | 福建师范大学 | A kind of measurement method measuring Concave Mirrors Focus |
| CN111043561A (en) * | 2018-12-03 | 2020-04-21 | 广东怡隆光学科技有限公司 | Stage lighting source system |
| CN113192389A (en) * | 2021-05-06 | 2021-07-30 | 临沂市拓普网络股份有限公司 | Platform is used in teaching based on wisdom classroom |
| CN114235147A (en) * | 2021-12-21 | 2022-03-25 | 深圳汝原福永智造科技有限公司 | Testing device |
| CN114822189A (en) * | 2022-04-22 | 2022-07-29 | 聊城高级财经职业学校 | Optical lens demonstration device for replacing and adjusting lens and focal length through computer |
| CN115113389A (en) * | 2022-06-08 | 2022-09-27 | 温州医科大学 | Synchronous real-time analysis system for stability of tear film and light path construction method |
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- 2017-03-08 CN CN201720219442.4U patent/CN206628173U/en not_active Expired - Fee Related
Cited By (11)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN107705684A (en) * | 2017-11-27 | 2018-02-16 | 牡丹江师范学院 | A kind of Optical-Physics Experiment device |
| CN108510847A (en) * | 2018-04-09 | 2018-09-07 | 朱言哲 | A kind of high school student's lever used for physics learning aids |
| CN108597332A (en) * | 2018-06-14 | 2018-09-28 | 黄永怀 | A kind of convex lens experimental provision |
| CN111043561A (en) * | 2018-12-03 | 2020-04-21 | 广东怡隆光学科技有限公司 | Stage lighting source system |
| CN110296819A (en) * | 2019-07-31 | 2019-10-01 | 福建师范大学 | A kind of measurement method measuring Concave Mirrors Focus |
| CN113192389A (en) * | 2021-05-06 | 2021-07-30 | 临沂市拓普网络股份有限公司 | Platform is used in teaching based on wisdom classroom |
| CN114235147A (en) * | 2021-12-21 | 2022-03-25 | 深圳汝原福永智造科技有限公司 | Testing device |
| CN114822189A (en) * | 2022-04-22 | 2022-07-29 | 聊城高级财经职业学校 | Optical lens demonstration device for replacing and adjusting lens and focal length through computer |
| CN114822189B (en) * | 2022-04-22 | 2023-08-11 | 聊城高级财经职业学校 | Optical lens demonstration device capable of adjusting lens and focal length through computer replacement |
| CN115113389A (en) * | 2022-06-08 | 2022-09-27 | 温州医科大学 | Synchronous real-time analysis system for stability of tear film and light path construction method |
| CN115113389B (en) * | 2022-06-08 | 2023-08-18 | 温州医科大学 | Tear film stability synchronous real-time analysis system and optical path construction method |
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Granted publication date: 20171110 Termination date: 20180308 |