CN110956872A - Color-adjustable electronic laser pen - Google Patents
Color-adjustable electronic laser pen Download PDFInfo
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- CN110956872A CN110956872A CN201911306571.7A CN201911306571A CN110956872A CN 110956872 A CN110956872 A CN 110956872A CN 201911306571 A CN201911306571 A CN 201911306571A CN 110956872 A CN110956872 A CN 110956872A
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- laser
- laser diode
- pen
- reflector
- green
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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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- G—PHYSICS
- G02—OPTICS
- G02B—OPTICAL ELEMENTS, SYSTEMS OR APPARATUS
- G02B27/00—Optical systems or apparatus not provided for by any of the groups G02B1/00 - G02B26/00, G02B30/00
- G02B27/10—Beam splitting or combining systems
- G02B27/14—Beam splitting or combining systems operating by reflection only
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- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01S—DEVICES USING THE PROCESS OF LIGHT AMPLIFICATION BY STIMULATED EMISSION OF RADIATION [LASER] TO AMPLIFY OR GENERATE LIGHT; DEVICES USING STIMULATED EMISSION OF ELECTROMAGNETIC RADIATION IN WAVE RANGES OTHER THAN OPTICAL
- H01S5/00—Semiconductor lasers
- H01S5/04—Processes or apparatus for excitation, e.g. pumping, e.g. by electron beams
- H01S5/042—Electrical excitation ; Circuits therefor
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- Optics & Photonics (AREA)
- Engineering & Computer Science (AREA)
- Condensed Matter Physics & Semiconductors (AREA)
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- Business, Economics & Management (AREA)
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- Educational Technology (AREA)
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Abstract
The invention discloses a color-adjustable electronic laser pen, which is characterized in that the laser pen consists of red, green and blue laser diodes arranged in a pen shell, as well as a reflector, a laser emitting circuit and a light adjusting switch which are correspondingly arranged, wherein the laser emitting circuit consists of three constant current source circuits which are respectively and correspondingly connected with the red, green and blue laser diodes; the reflector is three light path adjusting devices which are respectively arranged corresponding to the red, green and blue laser diodes, and three paths of laser lights with different colors are emitted out by the diaphragm on the pen shell after being combined by the reflector. Compared with the prior art, the invention has the advantages of simple structure and flexible use, can meet the laser indication requirements in different use scenes, and realizes clear display in different PPT backgrounds.
Description
Technical Field
The invention relates to the technical field of electronic pens, in particular to an electronic laser pen capable of adjusting laser color.
Background
At present, most of common laser pens in the market are monochromatic laser pens, and the color is single. However, the existing PPT backgrounds are various and rich in color, and the single-color laser pen cannot meet the requirement of realizing clear display under different PPT backgrounds. Therefore, it is necessary to develop a laser pen capable of color matching according to the background color of the PPT to cope with different usage scenarios.
The electronic laser pen in the prior art is single in color, cannot be mixed with colors according to the background color of the PPT, greatly limits the application scenes of the laser pen, and is inconvenient to use. At present, no report about an electronic laser pen capable of adjusting laser color is found, and similar documents and published technical contents at home and abroad are not collected.
Disclosure of Invention
The invention aims to provide a color-adjustable electronic laser pen designed aiming at the defects of the prior art, the color-adjustable electronic laser pen adopts a color-adjusting module to complete the transformation and the output of laser with different colors, can select the laser intensity with different colors according to the use requirement, combines red, green or blue laser with different light intensities, has simple structure and convenient use, greatly meets the requirement of realizing clear display under different PPT backgrounds, and further widens the application scene of the electronic laser pen.
The purpose of the invention is realized as follows: a color-adjustable electronic laser pen is characterized in that the laser pen consists of a red laser diode, a green laser diode and a blue laser diode which are arranged in a pen shell, as well as a reflector, a laser emitting circuit and a light adjusting switch which are arranged correspondingly, wherein the laser emitting circuit consists of three constant current source circuits which are respectively connected with the red laser diode, the green laser diode and the blue laser diode in a one-to-one correspondence manner; the light adjusting switches are three knobs which respectively adjust the light emitting and laser brightness of the red laser diode, the green laser diode and the blue laser diode; the reflector is three light path adjusting devices which are respectively in one-to-one correspondence with the red light-emitting laser diode, the green light-emitting laser diode and the blue light-emitting laser diode, and three paths of lasers with different colors are emitted out through the aperture on the pen shell after being combined by the reflector.
The front surface and the back surface of the reflector are respectively plated with a high-reflection film and a high-transmission film.
The laser emission circuit is powered by a battery which is connected with a power switch in series; the power switch is provided with an on gear and an off gear, the on-off of a power supply of the whole laser pen is controlled, when the power switch is adjusted to the off gear, the laser emitting circuit is disconnected with the battery, the laser pen does not emit light, when the power switch is adjusted to the on gear, the laser emitting circuit is connected with the battery, and the laser pen emits laser with different colors.
The current value of each constant current source circuit can be adjusted by changing the variable resistance value in the circuit, so that the laser intensity emitted by the laser diode with the corresponding color can be adjusted.
Compared with the prior art, the electronic laser pen has the advantages that the structure is simple, the use is flexible, the laser indication requirements under different use scenes can be met, lasers with different colors can be selected, the emission of red, green and blue lasers with different intensities is controlled by utilizing the three-way constant current source circuit, and the combination of the lasers is carried out by the reflector, so that the clear display under different PPT backgrounds is realized, and the application scenes of the electronic laser pen are further widened.
Drawings
FIG. 1 is a schematic structural view of the present invention;
FIG. 2 is a schematic diagram of a laser emitting circuit;
FIG. 3 is a schematic diagram of a constant current source circuit;
FIG. 4 is a schematic diagram of multiple laser beam combination;
fig. 5 is a schematic view of a mirror structure.
Detailed Description
The present invention is further illustrated by the following specific examples.
Example 1
Referring to the attached figure 1, the invention is composed of a red laser diode 5, a green laser diode 6 and a blue laser diode 7 which are arranged in a pen shell 1, and a reflector 2, a laser emitting circuit 4 and a light adjusting switch 3 which are arranged correspondingly to the red laser diode 5, the green laser diode 6 and the blue laser diode 7, wherein the laser emitting circuit 4 is composed of three constant current source circuits 8 which are respectively connected with the red laser diode 5, the green laser diode 6 and the blue laser diode 7 in a one-to-one correspondence manner; the light adjusting switch 3 is three knobs which respectively adjust the light emitting and laser brightness of the red laser diode 5, the green laser diode 6 and the blue laser diode 7; the reflector 2 is three glass sheets plated with a high reflection film 9 and a high transmission film 10 respectively, and is arranged corresponding to the red laser diode 5, the green laser diode 6 and the blue laser diode 7 one by one, and three paths of lasers with different colors are emitted out by an aperture 21 arranged at one end of the pen shell 1 after being combined by the reflector 2.
Referring to fig. 2, the laser emitting circuit 4 includes three constant current source circuits 8 with the same structure, that is, three parallel constant current source circuits 8 respectively corresponding to the red laser diode 5, the green laser diode 6 and the blue laser diode 7, which are connected in parallel and then connected in series with the power switch 13 and the battery 14 and are grounded, and the battery 14 provides a voltage source for the laser emitting circuit 4. The variable resistor R in each constant current source circuit 8 is changed by the light adjusting switch 32The resistance value of the laser diode can meet the requirements of working power ranges of laser diodes with different colors and models, and laser with corresponding colors with different intensities is output. Resistance R2The adjusting pointer is connected with the rotating pointer of the light adjusting switch 3, the knob switch is rotated clockwise, the intensity of the corresponding color laser is increased, and otherwise, the intensity of the corresponding color laser is reduced.
Referring to fig. 3, the constant current source circuit 8 is composed of an integrated operational amplifier F, a transistor G, and a current sampling resistor R1Variable resistor R2Current negative feedback is formed to realize constant current output, the transistor G is a PNP type tube, and the resistor R3、R4The total voltage of the laser emitting circuit 4 is divided. Due to the voltage dividing resistor R3、R4The resistance value and the total voltage are constant values, so that the output current of the constant current source circuit 8, that is, the current value flowing through the red laser diode 5, the green laser diode 6 or the blue laser diode 7 is only obtained by the variable resistor R2If determined, the output current of the constant current source circuit 8 is calculated by the following equation a:
the red laser diode 5, the green laser diode 6 or the blue laser diodeThe luminous intensity of the tube 7 depends on the current flowing through the laser diode D, the higher the current is, the higher the intensity of the laser emitted by the laser diode D is, and conversely, the lower the intensity of the laser is, therefore, when the variable resistor R is2When the resistance value is changed, the output current of the constant current source circuit 4, that is, the current flowing through the laser diode D is changed, so that the intensity of the laser emitted by the corresponding red laser diode 5, green laser diode 6 or blue laser diode 7 is adjusted. In order to prevent the laser diode D from being burnt out due to overhigh current, the protective resistor R is added5Limiting the magnitude of the current in the circuit.
The invention is used as follows: the power switch 13 is adjusted to the on gear, the laser brightness of the color corresponding to the dimming switch 3 is rotated, the aperture 21 of the laser pen emits the selected synthetic laser beam with different colors/brightness, and the function of adjusting the color of the laser emitted by the laser pen is realized.
Referring to fig. 4 to 5, the reflector 2 is three glass sheets plated with a high reflective film 9 and a high transmissive film 10 respectively, and is disposed on a parallel straight line in the pen case 1 in one-to-one correspondence with the red laser diode 5, the green laser diode 6, and the blue laser diode 7, and the three reflectors 2 form 45-degree included angles with the long side of the pen case 1, that is, are disposed at 45-degree angles with the emission light paths of the red laser diode 5, the green laser diode 6, and the blue laser diode 7 respectively. When the red laser diode 5, the green laser diode 6 and the blue laser diode 7 emit laser, the corresponding reflector 2 reflects the laser by using the high reflection film 9, so that the light path of the reflected laser is perpendicular to the plane of the diaphragm 21, then the laser penetrates through the high transmission film 10 to be polymerized with other lasers, the combined laser 30 of the lasers with different colors is realized, and finally the laser is emitted out of the diaphragm 21.
The invention has been described in further detail in order to avoid limiting the scope of the invention, and it is intended that all such equivalent embodiments be included within the scope of the following claims.
Claims (3)
1. A color-adjustable electronic laser pen is characterized in that the laser pen is composed of a red laser diode, a green laser diode and a blue laser diode which are arranged in a pen shell, as well as a reflector, a laser emitting circuit and a light adjusting switch which are arranged correspondingly, wherein the laser emitting circuit is composed of three constant current source circuits which are respectively connected with the red laser diode, the green laser diode and the blue laser diode in a one-to-one correspondence manner; the light adjusting switches are three knobs which respectively adjust the light emitting and brightness of the red laser diode, the green laser diode and the blue laser diode; the reflector is three light path adjusting devices which are arranged in one-to-one correspondence with the red laser diode, the green laser diode and the blue laser diode, and three paths of laser with different colors are combined by the reflector and then are emitted out of the pen shell through the aperture.
2. The color tunable electronic laser pen according to claim 1, wherein the front and back surfaces of the reflector are coated with a high reflective film and a high transmissive film, respectively.
3. The color tunable electronic laser pointer as claimed in claim 1, wherein the laser emitting circuit is powered by a battery connected in series to a power switch.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201911306571.7A CN110956872A (en) | 2019-12-18 | 2019-12-18 | Color-adjustable electronic laser pen |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201911306571.7A CN110956872A (en) | 2019-12-18 | 2019-12-18 | Color-adjustable electronic laser pen |
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| Publication Number | Publication Date |
|---|---|
| CN110956872A true CN110956872A (en) | 2020-04-03 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201911306571.7A Pending CN110956872A (en) | 2019-12-18 | 2019-12-18 | Color-adjustable electronic laser pen |
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| CN (1) | CN110956872A (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN111679440A (en) * | 2020-05-22 | 2020-09-18 | 季华实验室 | Multispectral LED light path synthesizer based on formation of image |
-
2019
- 2019-12-18 CN CN201911306571.7A patent/CN110956872A/en active Pending
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN111679440A (en) * | 2020-05-22 | 2020-09-18 | 季华实验室 | Multispectral LED light path synthesizer based on formation of image |
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