CN108572058A - Lens focus point detection device and its application method - Google Patents
Lens focus point detection device and its application method Download PDFInfo
- Publication number
- CN108572058A CN108572058A CN201710480579.XA CN201710480579A CN108572058A CN 108572058 A CN108572058 A CN 108572058A CN 201710480579 A CN201710480579 A CN 201710480579A CN 108572058 A CN108572058 A CN 108572058A
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- Prior art keywords
- lens
- hot spot
- fixed
- lifting platform
- focus point
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- G—PHYSICS
- G01—MEASURING; TESTING
- G01M—TESTING STATIC OR DYNAMIC BALANCE OF MACHINES OR STRUCTURES; TESTING OF STRUCTURES OR APPARATUS, NOT OTHERWISE PROVIDED FOR
- G01M11/00—Testing of optical apparatus; Testing structures by optical methods not otherwise provided for
- G01M11/02—Testing optical properties
- G01M11/0228—Testing optical properties by measuring refractive power
Abstract
The present invention relates to lens technologies, more particularly to a kind of lens focus point detection device and its application method, it include the lifting platform for placing exemplar, lifting platform is driven by elevating mechanism and realizes lifting, elevating mechanism is fixed on bottom plate, fixing bracket on bottom plate, it is fixed for that the fixture of lens is clamped on holder, lens are arranged in the top of exemplar, scale is attached on the upper face of bottom plate, the length direction of scale is parallel with the optical axis length direction of lens, thimble is vertically fixed in one end of scale on bottom plate, focal zone and the accurate measurement focus point temperature of progress that the sunlight of different angle generates after lens are detected using the detection device, in this way in car light mounting design, it can be kept away in the enterprising professional etiquette of structure, the higher position of focus point temperature is avoided as possible, reduce the possibility that lens surrounding components are focused sunlight ablation.
Description
Technical field
The present invention relates to lens technology more particularly to a kind of lens focus point detection device and its application methods.
Background technology
It is quickly propelled with modular in car headlamp, lens module is generous with its moulding, light type is good, uniform-illumination
The characteristics of just more and more favored by car light designer.However, often occurring lens surrounding components quilt in use
The case where focusing sunlight spot ablation after lens refraction, scrapping for entrucking lamp is caused, more serious quality accident is formed, gives
Car light manufacturer causes huge economy and fame to lose.
Invention content
The purpose of the present invention is overcoming defect of the existing technology, a kind of lens focus point detection device is provided and its is made
With method, the focal zone that the sunlight of different angle generates after lens can be found out and accurately measured, in structure
Evaded when design, reduces the possibility that lens surrounding components are focused sunlight ablation.
To achieve the above object, the present invention proposes following technical scheme：A kind of lens focus point detection device, including be used for
The lifting platform of exemplar is placed, lifting platform is driven by elevating mechanism realizes that lifting, elevating mechanism are fixed on bottom plate, fixed on bottom plate
Holder is fixed on holder that the fixture of lens is clamped, and lens are arranged in the top of exemplar, mark is attached on the upper face of bottom plate
The length direction of ruler, scale is parallel with the optical axis length direction of lens, and thimble is vertically fixed in one end of scale on bottom plate.
Further, the fixture includes the fixed block and movable block for lens to be clamped positioned opposite, and movable block can
Slidingtype is arranged in the slot of fixed seat, and the outer end far from fixed block connects adjusting screw rod in movable block, and adjusting screw rod includes hand
The end of handle and shaft, shaft is inserted into movable block and the two is threadedly coupled, and flange is arranged on shaft, flange holding is in fixed seat
The movement of bar length direction in the card slot of side setting for limiting shaft, fixed seat and fixed block are fixed on holder.
Further, raised line is arranged in the both sides of the movable block, and bar-shaped trough, raised line arrangement is arranged in both sides in the slot of fixed seat
Composition is slidably matched in bar-shaped trough and the length direction of the two is parallel with the bar length direction of shaft.
Preferably, the fixed block and the opposite end of movable block open up the notch for lens to be clamped respectively, notch and
Positioned spacers between the edge of lens.
A kind of application method of lens focus point detection device, includes the following steps：
A. hand lens is placed between fixed block and movable block, and transfers adjusting screw rod and lens are pressed from both sides in movable block movement
Tightly；
B. adjustment whole device position, by the solar direction of thimble face at this time, when the inverted image of thimble is overlapped with scale,
It is considered as and is adjusted in place；
C. by adjust elevating mechanism drive lifting platform move up and down, at this time penetrate lens refraction light can on exemplar shape
At hot spot, and with the movement of lifting platform, size, the length of hot spot constantly change, when lifting platform is moved to lens rear
Lifting platform is locked at hot spot minimum position, fixed block center line is measured to the distance H of exemplar and the plane of lens with ruler
To the horizontal distance L of hot spot, and record hot spot diameter D, 5min or more time focus after, with infrared radiation thermometer record hot spot
Temperature T；
D. lifting platform is driven to move up and down by adjusting elevating mechanism, sunlight is totally reflected to front simultaneously through lens at this time
Hot spot is formed on exemplar, as the size of the mobile spot of lifting platform, length constantly change, when being moved in front of lens
Lifting platform is locked at hot spot minimum position；Fixed block center line is measured to the distance H of exemplar and the plane of lens with ruler
To the horizontal distance L of hot spot, and record the diameter D of hot spot；After the time of 5min or more focuses, hot spot is recorded with infrared radiation thermometer
Temperature T, at this point, just recording identical sunlight and facula position and focus point temperature before and after lens when lens axis angle α；
E. for different sunlight and lens axis angle α, need in one day different moments repeatedly measure, generally every
5 ° measure primary, multiplicating step c, d；
F. data are arranged, the position of the higher focal beam spot of temperature and temperature are found out, assess the possibility of exemplar ablation.
Advantageous effect：Detect that the focal zone that the sunlight of different angle generates after lens is gone forward side by side using the detection device
The accurate focus point temperature that measures of row can keep away in the enterprising professional etiquette of structure in this way in car light mounting design, avoid focus point as possible
The higher position of temperature reduces the possibility that lens surrounding components are focused sunlight ablation.
Description of the drawings
Fig. 1 is the dimensional structure diagram of the present invention；
Fig. 2 is partial schematic diagram in Fig. 1；
Fig. 3 is the schematic cross-section of the present invention；
Fig. 4 is sunlight of the present invention and optical axis angle schematic diagram calculation.
In figure：10- exemplars；20- lifting platforms；30- elevating mechanisms；40- bottom plates；50- holders；60- lens；71- fixed blocks,
72- movable blocks, 721- raised lines, 73- fixed seats, 731- card slots, 74- adjusting screw rods, 741- handles, 742- shafts, 75- flanges,
76- notches；80- scales；90- thimbles.
Specific implementation mode
With reference to Fig. 1-Fig. 4, the invention will be further described.
A kind of lens focus point detection device includes the lifting platform 20 for placing exemplar 10, and lifting platform 20 is by elevator
Structure 30, which drives, realizes that lifting, elevating mechanism 30 are fixed on bottom plate 40, fixing bracket 50 on bottom plate 40, is fixed on holder 50
The fixture of lens 60 is clamped, lens 60 are arranged in the top of exemplar 10, scale 80 is attached on the upper face of bottom plate 40, scale 80
Length direction is parallel with the optical axis length direction of lens 60, and thimble 90 is vertically fixed in one end of scale 80 on bottom plate 40.
Further, the fixture includes the fixed block 71 and movable block 72 for lens 60 to be clamped positioned opposite, is moved
Motion block 72 is slideable to be arranged in the slot of fixed seat 73, and the outer end far from fixed block 71 in movable block 72 connects adjusting screw rod
74, adjusting screw rod 74 includes handle 741 and shaft 742, and the end of shaft 742 is inserted into movable block 72 and the two is threadedly coupled,
Flange 75 is set on shaft 742, and 75 holding of flange is in the card slot 731 that 73 side of fixed seat is arranged for limiting shaft 742
The movement of bar length direction, fixed seat 73 and fixed block 71 are fixed on holder 50.When rotating the handle 741 of adjusting screw rod 74, by
It is limited and can only be rotated by card slot 731 in the shaft 742 of adjusting screw rod 74, and between shaft 742 and movable block 72
It is threadedly coupled, so rotation adjusting screw rod 74 can drive the movement of movable block 72, to realize clamping and the pine to lens 60
It opens.
Preferably, raised line 721 is arranged in the both sides of the movable block 72, and bar-shaped trough is arranged in both sides in the slot of fixed seat 73, convex
Item 721 is arranged in bar-shaped trough to constitute and be slidably matched and the length direction of the two is parallel with the bar length direction of shaft 742.Rotation
While adjusting screw rod 74 drives movable block 72 to move, raised line 721 slides in bar-shaped trough, plays the role of guiding so that moves
The movement of motion block 72 is more stable.
Further, the fixed block 71 and the opposite end of movable block 72 open up the notch for lens 60 to be clamped respectively
76, positioned spacers between notch 76 and the edge of lens 60.Rubber or other soft materials may be used in gasket, not only to lens
60 edges play a protective role, moreover it is possible to which the gasket by replacing different-thickness realizes consolidating to the lens 60 of different edge thickness
Fixed, applicability is wider.
A kind of application method of lens focus point detection device, includes the following steps：
A. hand lens 60 is placed between fixed block 71 and movable block 72, and transfers adjusting screw rod 74 so that movable block 72 moves
It is dynamic to clamp lens 60；
B. adjustment whole device position, by the solar direction of 90 face of thimble at this time, when inverted image and the scale 80 of thimble 90
When coincidence, it is considered as and is adjusted in place；
C. lifting platform 20 is driven to move up and down by adjusting elevating mechanism 30, the refraction light for penetrating lens 60 at this time can be in sample
Hot spot is formed on part 10, and with the movement of lifting platform 20, size, the length of hot spot constantly change, when lifting platform 20 moves
It moves to locking lifting platform 20 at 60 rear hot spot minimum position of lens, 71 center line of fixed block is measured to exemplar 10 with ruler
The plane of distance H1 and lens 60 is to the horizontal distance L1 of hot spot, and the time for recording the diameter D1,5min or more of hot spot is poly-
It is defocused, with infrared radiation thermometer record hot spot temperature T1；
D. lifting platform 20 is driven to move up and down by adjusting elevating mechanism 30, sunlight is totally reflected to through lens 60 at this time
Front simultaneously forms hot spot on exemplar 10, as the size of the mobile spot of lifting platform 20, length constantly change, works as movement
Lifting platform 20 is locked to 60 front hot spot minimum position of lens；With ruler measure 71 center line of fixed block to exemplar 10 away from
Horizontal distance L2 from the plane of H2 and lens 60 to hot spot, and record the diameter D2 of hot spot；The time of 5min or more focuses
Afterwards, hot spot temperature T2 is recorded with infrared radiation thermometer, at this point, just recording identical sunlight and the lens 60 when lens axis angle α
Front and back facula position and focus point temperature；
E. for different sunlight and lens axis angle α, need in one day different moments repeatedly measure, generally every
5 ° (angle need to be converted into time interval according to place longitude and latitude is measured) measure primary, multiplicating step c, d；
F. data are arranged, the position of the higher focal beam spot of temperature and temperature are found out, assess the possibility of 10 ablation of exemplar
Property, to be taken precautions against accordingly in structure design.
Focal zone that the sunlight of different angle generates after lens is detected using the detection device and is accurately surveyed
Amount focus point temperature can keep away in the enterprising professional etiquette of structure in this way in car light mounting design, it is higher to avoid focus point temperature as possible
Position, reduce the possibility that lens surrounding components are focused sunlight ablation, improve the service life of lens surrounding components.
It should be appreciated that specific embodiment described above is only used for explaining the present invention, it is not intended to limit the present invention.By
The obvious changes or variations that the spirit of the present invention is extended out are still in the protection scope of this invention.
Claims (5)
1. a kind of lens focus point detection device, it is characterised in that：Lifting platform (20) including being used to place exemplar (10), lifting
Platform (20) is driven by elevating mechanism (30) realizes that lifting, elevating mechanism (30) are fixed on bottom plate (40), fixed on bottom plate (40)
Holder (50) is fixed on holder (50) that the fixture of lens (60) is clamped, and lens (60) are arranged in the top of exemplar (10), bottom
Scale (80) is attached on the upper face of plate (40), the length direction of scale (80) is parallel with the optical axis length direction of lens (60),
Thimble (90) is vertically fixed in one end of scale (80) on bottom plate (40).
2. lens focus point detection device according to claim 1, it is characterised in that：The fixture includes positioned opposite
Fixed block (71) for lens (60) to be clamped and movable block (72), movable block (72) is slideable to be arranged in fixed seat (73)
In slot, the outer end connection adjusting screw rod (74) far from fixed block (71) in movable block (72), adjusting screw rod (74) includes handle
(741) and shaft (742), the end of shaft (742) is inserted into movable block (72) and the two is threadedly coupled, and shaft is set on (742)
Set flange (75), bar of flange (75) holding in the card slot (731) that fixed seat (73) side is arranged for limiting shaft (742)
The movement of length direction, fixed seat (73) and fixed block (71) are fixed on holder (50).
3. lens focus point detection device according to claim 2, it is characterised in that：The both sides of the movable block (72) are set
Raised line (721) is set, bar-shaped trough is arranged in both sides in the slot of fixed seat (73), and raised line (721), which is arranged in bar-shaped trough to constitute to slide, matches
It closes and the length direction of the two is parallel with the bar length direction of shaft (742).
4. lens focus point detection device according to claim 3, it is characterised in that：The fixed block (71) and movable block
(72) opposite end opens up the notch (76) for lens (60) to be clamped respectively, between notch (76) and the edge of lens (60)
Positioned spacers.
5. a kind of application method of lens focus point detection device, includes the following steps：
A. hand lens (60) is placed between fixed block (71) and movable block (72), and transfers adjusting screw rod (74) so that movable block
(72) it moves and clamps lens (60)；
B. adjustment whole device position, by the solar direction of thimble (90) face at this time, when the inverted image and scale of thimble (90)
(80) when overlapping, it is considered as and is adjusted in place；
C. lifting platform (20) is driven to move up and down by adjusting elevating mechanism (30), the refraction light for penetrating lens (60) at this time can be
Hot spot is formed on exemplar (10), and as the movement of lifting platform (20), size, the length of hot spot constantly change, works as lifting
Platform (20), which is moved at the hot spot minimum position of lens (60) rear, locks lifting platform (20), is measured in fixed block (71) with ruler
Heart line and records the diameter of hot spot to the distance H1 of exemplar (10) and the plane of lens (60) to the horizontal distance L1 of hot spot
After the time of D1,5min or more focus, with infrared radiation thermometer record hot spot temperature T1；
D. lifting platform (20) is driven to move up and down by adjusting elevating mechanism (30), sunlight is totally reflected through lens (60) at this time
Hot spot is formed to front and on exemplar (10), as the size of the mobile spot of lifting platform (20), length constantly change,
Lifting platform (20) are locked when being moved in front of lens (60) at hot spot minimum position；Fixed block (71) center line is measured with ruler
To the distance H2 of exemplar (10) and the plane of lens (60) to the horizontal distance L2 of hot spot, and the diameter D2 of hot spot is recorded；
After the time of 5min or more focuses, hot spot temperature T2 is recorded with infrared radiation thermometer, at this point, just recording identical sunlight and lens light
Facula position and focus point temperature before and after lens (60) when axis angle α；
E. for different sunlight and lens axis angle α, need in one day different moments repeatedly measure, generally every 5 ° of surveys
Amount is primary, and step c, d is repeated several times；
F. data are arranged, the position of the higher focal beam spot of temperature and temperature are found out, assess the possibility of exemplar (10) ablation.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201710480579.XA CN108572058A (en) | 2017-06-22 | 2017-06-22 | Lens focus point detection device and its application method |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201710480579.XA CN108572058A (en) | 2017-06-22 | 2017-06-22 | Lens focus point detection device and its application method |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN108572058A true CN108572058A (en) | 2018-09-25 |
Family
ID=63576145
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201710480579.XA Pending CN108572058A (en) | 2017-06-22 | 2017-06-22 | Lens focus point detection device and its application method |
Country Status (1)
| Country | Link |
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| CN (1) | CN108572058A (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109830154A (en) * | 2019-03-20 | 2019-05-31 | 程淑鑫 | A kind of physics convex lens experimental demonstration device |
| CN110261073A (en) * | 2019-06-10 | 2019-09-20 | 必亚检测技术(上海)有限公司 | A kind of simulated solar irradiation focuses the test method of calcination |
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| US20110069492A1 (en) * | 2009-09-21 | 2011-03-24 | Becton, Dickinson And Company | Lens positioning apparatus |
| CN105842145A (en) * | 2016-04-26 | 2016-08-10 | 上海小糸车灯有限公司 | Sunlight focusing analysis device for automobile lamp lens and use method thereof |
| CN105855696A (en) * | 2016-05-10 | 2016-08-17 | 西安中科微精光子制造科技有限公司 | Laser focusing spot positioning method and device |
| CN106555969A (en) * | 2016-11-24 | 2017-04-05 | 武汉通畅汽车电子照明有限公司 | For positioning the alignment system and localization method of LED car lamp light source |
| CN207850652U (en) * | 2017-06-22 | 2018-09-11 | 常州星宇车灯股份有限公司 | Lens focus point detection device |
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- 2017-06-22 CN CN201710480579.XA patent/CN108572058A/en active Pending
Patent Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US20110069492A1 (en) * | 2009-09-21 | 2011-03-24 | Becton, Dickinson And Company | Lens positioning apparatus |
| CN105842145A (en) * | 2016-04-26 | 2016-08-10 | 上海小糸车灯有限公司 | Sunlight focusing analysis device for automobile lamp lens and use method thereof |
| CN105855696A (en) * | 2016-05-10 | 2016-08-17 | 西安中科微精光子制造科技有限公司 | Laser focusing spot positioning method and device |
| CN106555969A (en) * | 2016-11-24 | 2017-04-05 | 武汉通畅汽车电子照明有限公司 | For positioning the alignment system and localization method of LED car lamp light source |
| CN207850652U (en) * | 2017-06-22 | 2018-09-11 | 常州星宇车灯股份有限公司 | Lens focus point detection device |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109830154A (en) * | 2019-03-20 | 2019-05-31 | 程淑鑫 | A kind of physics convex lens experimental demonstration device |
| CN109830154B (en) * | 2019-03-20 | 2020-11-13 | 程淑鑫 | Physical convex lens experiment demonstration device |
| CN110261073A (en) * | 2019-06-10 | 2019-09-20 | 必亚检测技术(上海)有限公司 | A kind of simulated solar irradiation focuses the test method of calcination |
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