CN105139719A - Electronic pointer capable of directly generating dynamic emphasis sign pattern - Google Patents
Electronic pointer capable of directly generating dynamic emphasis sign pattern Download PDFInfo
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- CN105139719A CN105139719A CN201510654229.1A CN201510654229A CN105139719A CN 105139719 A CN105139719 A CN 105139719A CN 201510654229 A CN201510654229 A CN 201510654229A CN 105139719 A CN105139719 A CN 105139719A
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- laser
- grating eyeglass
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- push rod
- rotating shaft
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- G—PHYSICS
- G09—EDUCATION; CRYPTOGRAPHY; DISPLAY; ADVERTISING; SEALS
- G09B—EDUCATIONAL OR DEMONSTRATION APPLIANCES; APPLIANCES FOR TEACHING, OR COMMUNICATING WITH, THE BLIND, DEAF OR MUTE; MODELS; PLANETARIA; GLOBES; MAPS; DIAGRAMS
- G09B17/00—Teaching reading
- G09B17/02—Line indicators or other guides or masks
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- Engineering & Computer Science (AREA)
- Business, Economics & Management (AREA)
- Physics & Mathematics (AREA)
- Educational Administration (AREA)
- Educational Technology (AREA)
- General Physics & Mathematics (AREA)
- Theoretical Computer Science (AREA)
- Mechanical Light Control Or Optical Switches (AREA)
- Position Input By Displaying (AREA)
Abstract
The invention discloses an electronic pointer capable of directly generating a dynamic emphasis sign pattern. The electronic pointer comprises a housing and a first laser output assembly arranged on the housing. The left end of the housing is provided with a left light outlet. The first laser output assembly comprises a first installation plate, a rotation shaft, a first grating lens, a first laser emitter and a rotation shaft driving device. The first installation plate is fixedly arranged on the inner wall of the housing; the rotation shaft is rotatably arranged on the first installation plate; the first grating lens is fixedly arranged on the rotation shaft; the rotation shaft driving device is used for driving the rotation shaft to rotate; the first laser emitter is installed to the first installation plate; and the first grating lens is used for transmitting and diffracting the laser light emitted by the first laser emitter, thereby enabling the laser light obtained after transmission and diffraction to be emitted from the left light outlet, and enabling the image displayed on a screen to be circular or oval. The electronic pointer has the advantages of being convenient, quick, better in prompt effect and wider in application range and the like in the actual use process.
Description
Technical field
The invention belongs to electronic teacher pointer field, more specifically, relate to and a kind ofly can directly produce the electronic teacher pointer dynamically emphasizing identification pattern.
Background technology
In the area of activities such as teaching, engineering construction, floor manager, guide, need a well explanation, interchange, communication link.Along with the change of explanation, interchange, communication way, communication between explanation person and audience has become and has become increasingly complex, sometimes the content object explained and explanation person and audience are separated by very far away, and the traditional instrument of strengthening communication, drawing audience's notice such as common hand-held teacher's pointer can not produce good auxiliaring effect.In order to the concern enabling explanation person better attract audience, realize a more humane communication exchange link, the aid using some new in these area of activities is necessary.
In present teaching, computing machine and projector equipment are more and more widely used, the electronic teacher pointer (Chinese patent see publication number CN200420014950.1) only having simple control function of mouse that its teaching tool instrument has specially and computer is used in combination, or the electronic teacher pointer (Chinese patent see publication number CN94216245.5) of single red laser bright spot instruction, or realize different display effects (Chinese patent see publication number 201320689118.0) by artificially changing pointer rod head.Such teacher's pointer mark is not obvious, or can not generation freely as wave or straight line, ellipse or circle frame etc. emphasize identification pattern in case to explanation person tell about content and carry out Special attention will be given to or to show explanation progress, more do not possess hommization dynamic marks and emphasize function, identification pattern can not be emphasized by random picture such as wave or straight line, ellipse or circle frame etc. as the hand-held chalk of people, can better not attract the notice of audience, a well explanation, interchange, communication link can not be formed, neither one is well strengthened memory and is understood, the effect of transmission of information.
The existing electronic teacher pointer (Chinese patent see publication number 01228912.4) that can produce setting-out, picture frame, amplification roaming, the operation of high brightness show tags, need to be equipped with computing machine, receive other servicing units such as transmitting, complex structure, body weight is large, inconvenient operation, expensive, and the place being equipped with computing machine can only be used for, computer equipment is not had as sheet of showing slides, engineering construction, floor manager at other, can not use in the occasions such as guide interpreting, its dirigibility, versatility are not strong.
At present in the activities such as playing lantern slides, engineering construction, floor manager, guide, do not have special teacher's pointer aid, lacking does not need allocation of computer and can directly use, dirigibility, the electronic teacher pointer of highly versatile.
Summary of the invention
For above defect or the Improvement requirement of prior art, the invention provides and a kind ofly have and directly can emphasize the electronic teacher pointer of function by dynamic marks, this electronic teacher pointer can directly produce as multiple identification patterns of dynamically emphasizing such as wave or straight line, ellipse or circle frames, arbitrarily can change the shape size regulating and emphasize identification pattern, there is hommization and arbitrarily dynamically emphasize identification function, to carry out Special attention will be given to content that explanation person tells about or to show explanation progress.
For achieving the above object, according to the present invention, provide and a kind ofly can directly produce the electronic teacher pointer dynamically emphasizing identification pattern, it is characterized in that, comprise shell and be arranged on the first Laser output assembly on shell, the left end of described shell is provided with left light-emitting window, and described first Laser output assembly comprises the first installing plate, rotating shaft, the first grating eyeglass, the first generating laser and rotating shaft drive unit, wherein
Described first installing plate is fixedly mounted on the inwall of described shell;
Described rotating shaft is rotatably arranged on described first installing plate;
Described rotating shaft drive unit rotates for driving described rotating shaft;
Described first generating laser is arranged on described first installing plate, and it is positioned at the right of described first grating eyeglass;
Described first grating eyeglass is fixedly mounted in described rotating shaft, and it is for the laser of the first laser transmitter projects described in transmission and diffraction, thus makes the laser after transmission and diffraction show circle or oval at screen after described left light-emitting window sends; In addition, described first grating eyeglass can make the figure that screen shows switch between circle and ellipse around the rotation of described shaft axis.
Preferably, also comprise the second Laser output assembly be arranged on shell, described second Laser output assembly comprises the second installing plate, the second generating laser, the second grating eyeglass, wherein, described second installing plate, the second generating laser, the second grating eyeglass are all positioned at described shell, described second installing plate is fixedly mounted on the inwall of described shell, and on it, direction from left to right installs described second generating laser and the second grating eyeglass successively; In addition, the right-hand member of described shell is also provided with right light-emitting window, and described second grating eyeglass is used for the laser of the second laser transmitter projects described in transmission and diffraction, thus makes the laser after transmission and diffraction linear from showing at screen after described right light-emitting window sends.
Preferably, described second grating eyeglass is a wordline grating eyeglass, thus shows straight line on screen; Or described second grating eyeglass is a word waveform grating eyeglass, thus shows wave on screen.
Preferably, described rotating shaft drive unit comprises swing pinion, sliding rack and the first push rod, described swing pinion is fixedly mounted in described rotating shaft, described sliding rack engages with described swing pinion and can move left and right, described first push rod is fixedly connected on described sliding rack and also can moves left and right, and described swing pinion and described axis of rotation can be driven by moving left and right of described first push rod, and then described first grating eyeglass is driven to rotate around the axis of described rotating shaft.
Preferably, described first Laser output assembly also comprises slide block, and described skid is connected on described first installing plate and also can horizontally slips, and described slide block fixedly mounts described first generating laser.
Preferably, described first Laser output assembly also comprises the second push rod and described second push rod can horizontally slip, and described second push rod is fixedly connected with described slide block.
Preferably, described second Laser output assembly also comprises roller blind device and the 3rd push rod, the curtain plate that described roller blind device comprises spool and installs on said reel, described spool is rotatably arranged on the sidewall of described shell, described curtain plate is positioned at described shell, described 3rd push rod can move left and right and it moves left and right described spool can be driven to rotate, thus make described curtain plate curling or stretch, described curtain plate is arranged between described second grating eyeglass and described right light-emitting window, and it can block the fraction of laser light after described second grating lens transmission and diffraction, thus adjust the length of the light sent from described right light-emitting window.
In general, the above technical scheme conceived by the present invention compared with prior art, can obtain following beneficial effect:
1) the present invention uses the first grating eyeglass, the light that first generating laser sends is converted into ellipse or circle etc. and dynamically emphasizes identification pattern, the shape size emphasizing identification pattern can be regulated, there is hommization and arbitrarily dynamically emphasize identification function, to carry out Special attention will be given to content that explanation person tells about or to show explanation progress.
2) the present invention uses the second grating eyeglass, is converted into by the light that the second generating laser sends linear dynamically to emphasize identification pattern, with at the enterprising line identifier of screen.
3) roller blind device of the present invention coordinates with the second grating eyeglass, by the curling of curtain door and stretching, extension, can adjust the area of the light blocked, thus it is adjusted to make right light-emitting window send the length of linear laser pattern, is conducive to the length adjusting the content required emphasis on screen.
4) the present invention is by rotating described first grating eyeglass, and the pattern on screen can be made to change between circular and ellipse, does not therefore need to change the conversion that grating can realize between different pattern;
5) slide block of the present invention can horizontally slip on the first installing plate, thus can adjust the spacing with the first generating laser, and then can adjust the size of the pattern shown on screen;
6) the present invention in actual use, has the features such as convenient, fast, suggesting effect is stronger, the scope of application is wider.
Accompanying drawing explanation
Fig. 1 is circle identification pattern principle schematic;
Fig. 2 is line identification pattern principle schematic;
Fig. 3 is electronic teacher pointer one-piece construction principle schematic;
Fig. 4 is the first Laser output modular construction principle schematic;
Fig. 5 is the first Laser output assembly schematic three dimensional views;
Fig. 6 is the second Laser output modular construction principle schematic;
Embodiment
In order to make object of the present invention, technical scheme and advantage clearly understand, below in conjunction with drawings and Examples, the present invention is further elaborated.Should be appreciated that specific embodiment described herein only in order to explain the present invention, be not intended to limit the present invention.In addition, if below in described each embodiment of the present invention involved technical characteristic do not form conflict each other and just can mutually combine.
With reference to Fig. 1 ~ Fig. 6, a kind ofly can directly produce the electronic teacher pointer dynamically emphasizing identification pattern, comprise shell IV and be arranged on the first Laser output assembly I on shell IV, the left end of described shell IV is provided with left light-emitting window 15, described first Laser output assembly I comprises the first installing plate 8, rotating shaft, the first grating eyeglass 1, first generating laser 6 and rotating shaft drive unit, wherein
Described first installing plate 8 is fixedly mounted on the inwall of described shell IV;
Described rotating shaft is rotatably arranged on described first installing plate 8, and it fixedly mounts described first grating eyeglass 1;
Described rotating shaft drive unit rotates for driving described rotating shaft;
Preferably, described rotating shaft drive unit comprises swing pinion 4, sliding rack 2 and the first push rod 3, described swing pinion 4 is fixedly mounted in described rotating shaft, described sliding rack 2 engages with described swing pinion 4 and can move left and right, described first push rod 3 is fixedly connected on described sliding rack 2 and also can moves left and right, and described swing pinion 4 and described axis of rotation can be driven by moving left and right of the first push rod 3, and then described first grating eyeglass 1 is driven to rotate around the axis of described rotating shaft.As preferred further, can arrange a chute on shell IV, described first push rod 3 can stretch out shell IV from chute, like this with dynamic first push rod 3 of hand-lifting, just can make axis of rotation.Preferred as another kind, also can open a T-shaped chute in left-right direction on the sidewall of shell IV, at T-shaped chute, place arranges a slide block, and the first push rod 3 is fixedly connected with slide block, then sliding slider, and rotating shaft also can be driven to rotate.
In addition, described rotating shaft drive unit also can for being arranged on the knob in rotating shaft, and knob exposes to shell IV, uses hand turning knob, also can make axis of rotation
Described first generating laser 6 is arranged on described first installing plate 8, and it is positioned at the right of described first grating eyeglass 1;
The laser that described first grating eyeglass 1 is launched for the first generating laser 6 described in transmission and diffraction, thus the figure making the laser after transmission and diffraction send also screen 14 display from described left light-emitting window 15 is rounded or oval; In addition, described first grating eyeglass 1 can make the figure of display on screen 14 switch between circle and ellipse around the rotation of described shaft axis.
In addition, this electronic teacher pointer also comprises the second Laser output assembly II be arranged on shell IV, described second Laser output assembly II comprises the second installing plate 10, second generating laser 9, second grating eyeglass 11, wherein, described second installing plate 10, second generating laser 9, second grating eyeglass 11 is all positioned at described shell IV, described second installing plate 10 is fixedly mounted on the inwall of described shell IV, and on it, described second generating laser 9 and the second grating eyeglass 11 is installed in direction from left to right successively; In addition, the right-hand member of described shell IV is also provided with right light-emitting window 16, described second grating eyeglass 11 for described in transmission and diffraction second generating laser 9 launch laser, thus make the laser after transmission and diffraction from described right light-emitting window 16 send and screen 14 show figure be linear.Preferably, described second grating eyeglass 11 is a wordline grating eyeglass, thus shows straight line on screen 14, or described second grating eyeglass 11 is a word waveform grating eyeglass, thus shows wave on screen 14.
Preferably, described first Laser output assembly I also comprises slide block 7, and described first generating laser 6 is arranged on described first installing plate 8 by described slide block 7.Described first Laser output assembly I also comprises the second push rod 5 and described second push rod 5 can horizontally slip, described slide block 7 is slidably connected on described first installing plate 8 and also can horizontally slips, described slide block 7 is fixedly connected with described second push rod 5, and described second push rod 5 horizontally slips for driving described slide block 7.As preferred further, can arrange a chute on shell IV, described second push rod 5 can stretch out shell IV from chute, like this with dynamic second push rod 5 of hand-lifting, the first generating laser 6 just can be driven to move left and right.Preferred as another kind, also can open a T-shaped chute in left-right direction on the sidewall of shell IV, at T-shaped chute, place arranges a slide block, and the second push rod 5 is fixedly connected with slide block, then sliding slider, and the first generating laser 6 also can be driven to move left and right.
Preferably, described second Laser output assembly II also comprises roller blind device 13 and the 3rd push rod 12, and the roller blind device 13 in the present invention is the structure after existing commonplace employing rolling-door structure reduces, to adapt to the installing space of electronic teacher pointer, described roller blind device 13 comprises spool 131 and curtain plate 132, described spool 131 is rotatably arranged on the sidewall of described shell IV, described curtain plate 132 is positioned at described shell IV, described 3rd push rod 12 can move left and right and it moves left and right described spool 131 can be driven to rotate, thus make described curtain plate 132 curling or stretch, described curtain plate 132 is arranged between described second grating eyeglass 11 and described right light-emitting window 16, and it can block the some light after described second grating eyeglass 11 transmission and diffraction, thus adjust the length of the light sent from described right light-emitting window 16.As preferred further, can arrange a chute on shell IV, described 3rd push rod 12 can stretch out shell IV from chute, like this with dynamic 3rd push rod 12 of hand-lifting, spool 131 just can be driven to rotate.Preferred as another kind, also can open a T-shaped chute in left-right direction on the sidewall of shell IV, at T-shaped chute, place arranges a slide block, and the 3rd push rod 12 is fixedly connected with slide block, then sliding slider, and spool 131 also can be driven to rotate.
In addition, be the device of the rotary motion of spool 131 by the transform linear motion of the 3rd push rod 12, have a lot inside prior art, such as linkage rod slide block mechanism, rack and pinion mechanism etc.
Be provided with supply module III in shell IV of the present invention, power to the electronic original part in electronic teacher pointer by supply module III, dynamically emphasize identification pattern directly to produce.
As shown in Figure 3, the first Laser output assembly I can produce circle frame or pattern of oval shapes on screen 14, and can regulate the size of pattern.Its concrete occurring principle is as follows: as shown in Figure 4, and the beam of laser point that the first generating laser 6 can send by the first grating eyeglass 1 is dispersed and become circle framework laser pattern.Now fix the second push rod 5, by promoting the first push rod 3, rack and pinion engagement transmission, swing pinion 4 drives the first grating eyeglass 1 to pivot, end face along with the first grating eyeglass 1 and the change perpendicular to the angle theta of the plane of laser rays, can change into pattern of oval shapes by circular laser pattern; When angle theta be the end face of 0 ° of i.e. first grating eyeglass 1 perpendicular to laser rays time, on screen 14, the pattern of display be circular, and as angle 0 ° of < θ < 90 °, its pattern is ellipse; If now fix the first push rod 3, promote the second push rod 5, first generating laser 6 and follow slide block 7 and slide, change the distance L between the first generating laser 6 and the first grating eyeglass 1, the size of pattern can be regulated.
As shown in Figure 3, the second Laser output assembly II can produce linear pattern on screen 14, and can regulate its length scale.Its concrete occurring principle is as follows: as shown in Figure 6, the beam of laser point that second generating laser 9 can send by the second grating eyeglass 11 diverges to linear (specifically in-line or waveform depends on that the second grating eyeglass 11 adopts a wordline grating eyeglass or a word wave eyeglass).Because the position of the second generating laser 9 and the second grating eyeglass 11 is all fixing, now by curtain door shield portions light, by promoting the 3rd push rod 12, make roller blind device 13 fold or stretch, thus reach the object of the length regulating linear pattern.
Those skilled in the art will readily understand; the foregoing is only preferred embodiment of the present invention; not in order to limit the present invention, all any amendments done within the spirit and principles in the present invention, equivalent replacement and improvement etc., all should be included within protection scope of the present invention.
Claims (7)
1. one kind can directly produce the electronic teacher pointer dynamically emphasizing identification pattern, it is characterized in that, comprise shell and be arranged on the first Laser output assembly on shell, the left end of described shell is provided with left light-emitting window, described first Laser output assembly comprises the first installing plate, rotating shaft, the first grating eyeglass, the first generating laser and rotating shaft drive unit, wherein
Described first installing plate is fixedly mounted on the inwall of described shell;
Described rotating shaft is rotatably arranged on described first installing plate;
Described rotating shaft drive unit rotates for driving described rotating shaft;
Described first generating laser is arranged on described first installing plate, and it is positioned at the right of described first grating eyeglass;
Described first grating eyeglass is fixedly mounted in described rotating shaft, and it is for the laser of the first laser transmitter projects described in transmission and diffraction, thus makes the laser after transmission and diffraction show circle or oval at screen after described left light-emitting window sends; In addition, described first grating eyeglass can make the figure that screen shows switch between circle and ellipse around the rotation of described shaft axis.
2. according to claim 1ly a kind ofly can directly produce the electronic teacher pointer dynamically emphasizing identification pattern, it is characterized in that, also comprise the second Laser output assembly be arranged on shell, described second Laser output assembly comprises the second installing plate, second generating laser, second grating eyeglass, wherein, described second installing plate, second generating laser, second grating eyeglass is all positioned at described shell, described second installing plate is fixedly mounted on the inwall of described shell, on it, direction from left to right installs described second generating laser and the second grating eyeglass successively, in addition, the right-hand member of described shell is also provided with right light-emitting window, and described second grating eyeglass is used for the laser of the second laser transmitter projects described in transmission and diffraction, thus makes the laser after transmission and diffraction linear from showing at screen after described right light-emitting window sends.
3. according to claim 2ly a kind ofly can directly produce the electronic teacher pointer dynamically emphasizing identification pattern, it is characterized in that, described second grating eyeglass is a wordline grating eyeglass, thus shows straight line on screen; Or described second grating eyeglass is a word waveform grating eyeglass, thus shows wave on screen.
4. according to claim 1ly a kind ofly can directly produce the electronic teacher pointer dynamically emphasizing identification pattern, it is characterized in that, described rotating shaft drive unit comprises swing pinion, sliding rack and the first push rod, described swing pinion is fixedly mounted in described rotating shaft, described sliding rack engages with described swing pinion and can move left and right, described first push rod is fixedly connected on described sliding rack and also can moves left and right, and described swing pinion and described axis of rotation can be driven by moving left and right of described first push rod, and then drive described first grating eyeglass to rotate around the axis of described rotating shaft.
5. according to claim 1ly a kind ofly can directly produce the electronic teacher pointer dynamically emphasizing identification pattern, it is characterized in that, described first Laser output assembly also comprises slide block, described skid is connected on described first installing plate and also can horizontally slips, and described slide block fixedly mounts described first generating laser.
6. according to claim 5ly a kind ofly can directly produce the electronic teacher pointer dynamically emphasizing identification pattern, it is characterized in that, described first Laser output assembly also comprises the second push rod and described second push rod can horizontally slip, and described second push rod is fixedly connected with described slide block.
7. according to claim 1ly a kind ofly can directly produce the electronic teacher pointer dynamically emphasizing identification pattern, it is characterized in that, described second Laser output assembly also comprises roller blind device and the 3rd push rod, the curtain plate that described roller blind device comprises spool and installs on said reel, described spool is rotatably arranged on the sidewall of described shell, described curtain plate is positioned at described shell, described 3rd push rod can move left and right and it moves left and right described spool can be driven to rotate, thus make described curtain plate curling or stretch, described curtain plate is arranged between described second grating eyeglass and described right light-emitting window, and it can block the fraction of laser light after described second grating lens transmission and diffraction, thus adjust the length of the light sent from described right light-emitting window.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201510654229.1A CN105139719B (en) | 2015-10-12 | 2015-10-12 | It is a kind of directly to produce the electronic teacher pointer that dynamic emphasizes identification pattern |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201510654229.1A CN105139719B (en) | 2015-10-12 | 2015-10-12 | It is a kind of directly to produce the electronic teacher pointer that dynamic emphasizes identification pattern |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN105139719A true CN105139719A (en) | 2015-12-09 |
| CN105139719B CN105139719B (en) | 2017-08-01 |
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| Application Number | Title | Priority Date | Filing Date |
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| CN201510654229.1A Active CN105139719B (en) | 2015-10-12 | 2015-10-12 | It is a kind of directly to produce the electronic teacher pointer that dynamic emphasizes identification pattern |
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Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106781848A (en) * | 2016-12-16 | 2017-05-31 | 朱虹斐 | Laser pointer |
| CN107909884A (en) * | 2017-12-27 | 2018-04-13 | 浙江水利水电学院 | A kind of Intelligent Laser pen and laser width adjusting method |
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| CN2346018Y (en) * | 1998-08-28 | 1999-10-27 | 欧普康光电(厦门)有限公司 | New-structure of laser indicator |
| US20020184774A1 (en) * | 2001-05-10 | 2002-12-12 | Kim Byoung Chul | Verticality/horizon indicator for construction |
| CN200979759Y (en) * | 2006-04-25 | 2007-11-21 | 韩毓敏 | A laser fescue |
| CN101408672A (en) * | 2007-10-10 | 2009-04-15 | 先进微系统科技股份有限公司 | Laser indication device |
| US20140340725A1 (en) * | 2013-05-15 | 2014-11-20 | Zhen Tang | Laser marker |
| CN204576876U (en) * | 2015-05-12 | 2015-08-19 | 湖南理工职业技术学院 | Electronic multimedia teaching pen |
-
2015
- 2015-10-12 CN CN201510654229.1A patent/CN105139719B/en active Active
Patent Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN2346018Y (en) * | 1998-08-28 | 1999-10-27 | 欧普康光电(厦门)有限公司 | New-structure of laser indicator |
| US20020184774A1 (en) * | 2001-05-10 | 2002-12-12 | Kim Byoung Chul | Verticality/horizon indicator for construction |
| CN200979759Y (en) * | 2006-04-25 | 2007-11-21 | 韩毓敏 | A laser fescue |
| CN101408672A (en) * | 2007-10-10 | 2009-04-15 | 先进微系统科技股份有限公司 | Laser indication device |
| US20140340725A1 (en) * | 2013-05-15 | 2014-11-20 | Zhen Tang | Laser marker |
| CN204576876U (en) * | 2015-05-12 | 2015-08-19 | 湖南理工职业技术学院 | Electronic multimedia teaching pen |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106781848A (en) * | 2016-12-16 | 2017-05-31 | 朱虹斐 | Laser pointer |
| CN107909884A (en) * | 2017-12-27 | 2018-04-13 | 浙江水利水电学院 | A kind of Intelligent Laser pen and laser width adjusting method |
Also Published As
| Publication number | Publication date |
|---|---|
| CN105139719B (en) | 2017-08-01 |
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