CN101713620A - System capable of automatically adjusting brightness and sighting device - Google Patents
System capable of automatically adjusting brightness and sighting device Download PDFInfo
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- CN101713620A CN101713620A CN200810169310A CN200810169310A CN101713620A CN 101713620 A CN101713620 A CN 101713620A CN 200810169310 A CN200810169310 A CN 200810169310A CN 200810169310 A CN200810169310 A CN 200810169310A CN 101713620 A CN101713620 A CN 101713620A
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Abstract
The invention relates to a system capable of automatically adjusting brightness and a sighting device, and the system capable of automatically adjusting brightness comprises a photographic unit for outputting detecting a signal according to the detected light brightness, a charge/discharge circuit which is coupled with the photographic circuit, is used for receiving the detecting signal and generates a voltage signal with a regular change period according to the detecting signal, a comparing unit for comparing the voltage signal and a threshold signal and outputting a comparison result signal according to the comparison result, and a light source module for adjusting the light brightness according to the comparison result. The invention can automatically adjust the luminous brightness according to the environmental brightness.
Description
Technical field
The present invention relates to a kind of system capable of automatically adjusting brightness, refer in particular to a kind of system capable of automatically adjusting brightness that can be applied on the sight, and have the sight of this system capable of automatically adjusting brightness.
Background technology
As shown in Figure 1, 2, be known a kind of sight that is installed on the gun, but this sight comprises urceolus 1, be installed in the objective lens unit 2 of this urceolus 1 front end, be installed in this urceolus 1 rear end ocular lens unit 3, can adjust the change times unit 4 of enlargement ratio, the impact correcting unit 5 of two aiming off deviations, and aiming unit 6.This aiming unit 6 has the aiming sheet 61 of inner core 401 rear ends that are installed in this change times unit 4, and light feeding mechanism 62.This aiming sheet 61 has the cross portion 611 that can align usefulness for aiming, this light feeding mechanism 62 has the holder 621 that is installed on this urceolus 1 rear end, be installed in the variable resistor 622 in this holder 621, be installed in the circuit board 623 in this holder 621, be installed in the battery bearing 624 on this holder 621, be installed in the battery 625 in this battery bearing 624, be installed in the operation ring 626 on this battery bearing 624, can seal the capping 627 of this battery bearing 624, be installed in this urceolus 1 and be positioned at the refraction ring 628 at these aiming sheet 61 rears, and be installed in this refraction and encircle LED lamp 629 on 628.
When the user desires under the stronger environment border of extraneous light, when carrying out aimed fire, by rotating this operation ring 626 this LED lamp luminosity is improved, and, when the light of this LED lamp 629 when this refraction ring 628 refracts in the cross portion 611 of this aiming sheet 61, this cross portion 611 can reflect light and become shinny point of aim mark, and is like this, the user can utilize this higher cross portion 611 of brightness to carry out aimed fire under the higher environment of brightness.And when carrying out aimed fire under the state by day, when the object of aiming is moved to brighter when regional by darker zone, then must heighten the brightness of point of aim mark again, point of aim mark significantly is presented on the aiming window, allow user's thing that aimed at the mark, at this moment, the user must remove sight line and remove to adjust this operation ring 626, to be adjusted to suitable brightness size, but, original object that has aimed at may be when adjusting, and object moves and loses the trace of object, lose the chance of aiming, therefore, the brightness of manual adjustment point of aim mark has above shortcoming.
Summary of the invention
The technical problem to be solved in the present invention is, can't provide the shortcoming that causes the point of aim mark luminance shortage because of the ambient brightness variation in real time at the brightness of manually adjusting point of aim mark in the prior art, a kind of system capable of automatically adjusting brightness and sight are provided, can control the brightness size of adjusting point of aim mark according to ambient brightness.
The technical scheme that the present invention is adopted for its technical problem of solution is, a kind of auto brightness control system is provided, comprise photosensitive unit, brightness according to sensing, output sensing signal, charge/discharge road, couple this photosensitive unit, in order to receive this sensing signal, and according to voltage signal, the comparing unit of this sensing signal generation rule period of change, relatively this voltage signal and threshold values signal, and according to result relatively, output compare result signal and light source module, according to this compare result signal, adjust luminosity.
The present invention provides a kind of sight in addition, comprise system capable of automatically adjusting brightness, adjust luminosity, supply unit according to the brightness of sensing, this system capable of automatically adjusting brightness power supply and point of aim mark portion are provided, has point of aim mark, can reflect the light that sends by this system capable of automatically adjusting brightness, make this point of aim mark shinny.
Implement system capable of automatically adjusting brightness of the present invention and sight, has following beneficial effect: can be by the ambient brightness size that this photosensitive unit sensed, and control the frequency that flickers of this light source module, reach the result who reduces luminosity or improve luminosity.When run-home, move to along with object under the environment of any brightness, sight is can be automatically corresponding according to the brightness of environment adjusts suitable point of aim mark brightness, make that the user can be wholwe-hearted under any ambient brightness changes, improve the chance of lock onto target.
For above and other objects of the present invention, feature and advantage can be become apparent, cited below particularlyly go out a plurality of embodiment, and conjunction with figs. elaborates.
Description of drawings
The invention will be further described below in conjunction with drawings and Examples, in the accompanying drawing:
Fig. 1 is the known decomposing schematic representation that is installed in the sight on the gun.
Fig. 2 is the known cutaway view that is installed in the sight on the gun.
Fig. 3 is the calcspar of the system capable of automatically adjusting brightness of the embodiment of the invention.
Fig. 4 is the circuit diagram of the embodiment of the invention.
Fig. 5-A is that the magnitude of voltage of first capacitor C 1 changes when ambient brightness is dark.
Fig. 5-B is when ambient brightness is brighter, and the magnitude of voltage of first capacitor C 1 changes.
Fig. 6-A is the output result of comparison circuit when ambient brightness is dark of the embodiment of the invention.
Fig. 6-B is the output result of comparison circuit when ambient brightness is brighter of the embodiment of the invention.
Fig. 7 is the sight schematic diagram of the embodiment of the invention.
Fig. 8 is the structural representation of A portion among Fig. 7.
The specific embodiment
Seeing also shown in Figure 3ly, is the calcspar of system capable of automatically adjusting brightness 30 of the present invention, comprises photosensitive unit 301, charge/discharge road 302, comparing unit 303 and light source module 304.
Be illustrated in figure 4 as the circuit diagram of the embodiment of the invention.
This photosensitive unit 301, in order to the brightness of foundation sensing, output sensing signal SI is optical sensor 3011 in present embodiment, have the collection utmost point and couple power supply VCC and emitter-base bandgap grading, according to the brightness size of institute's sensing, by corresponding this sensing signal SI of emitter-base bandgap grading output, wherein this sensing signal SI is a current signal, when the brightness of sensing brighter, then Shu Chu this current signal is bigger, otherwise then Shu Chu this current signal is littler.
This charge/discharge road 302 couples this photosensitive unit 301, in order to receiving sensing signal SI by 301 outputs of this photosensitive unit, and according to the voltage signal SV of this sensing signal SI generation rule period of change.In present embodiment, this charge/discharge road is the RC circuit, comprise first resistance R 1 and first capacitor C 1, this first resistance R 1 couples emitter-base bandgap grading and this first capacitor C 1 of this optical sensor 3011, this first capacitor C, 1 other end pin ground connection, therefore this current signal is by after this first resistance R 1, and beginning stores electric charge in this first capacitor C 1, mat and make this first capacitor C 1 have this voltage signal SV that changes in the scheduled time.Electric current in input is under the definite value, changes the parameter of this first resistance R 1 and this first capacitor C 1, just can influence the length of this scheduled time.In like manner, when being under the definite value in this first resistance R 1 with this first capacitor C 1, the size of current of input can also influence the length of this scheduled time.Wherein, this scheduled time is this first capacitor C 1 and begins to be charged to the saturated time.So current signal that correspondence is exported by these optical sensor 3011 received brightness sizes, then influence this first capacitor C 1 and begin to be charged to the saturated time, for instance, when the current signal of input is healed greatly, then because electric current is bigger, it is just faster that this first capacitor C 1 arrives saturation voltage, charging interval is just short, otherwise electric current is littler, it is just slower that this first capacitor C 1 arrives saturation voltage, and the charging interval is just long.
This comparing unit 303, in order to this voltage signal SV size relatively, output compare result signal SR, comprise comparison circuit 3031 and this threshold voltage circuit 3032, wherein this comparison circuit 3031 is exported this compare result signal SR according to the comparative result that this voltage signal SV that imports reaches this threshold voltage STH that is exported by this threshold voltage circuit 3032.In the present embodiment, this comparison circuit 3031 comprises amplifier OP, the 7th resistance R 7 and the first diode D1, wherein this amplifier OP has threshold values input (+), couple this threshold voltage circuit 3032 to import this threshold values signal STH, signal input part (-), couple this first capacitor C 1 on this charge/discharge road 302, in order to import this voltage signal SV and voltage output end Vout, in order to exporting the relatively result of this threshold values signal STH and this voltage signal SV of this comparison circuit 3031, and export this compare result signal SR.
This threshold voltage circuit is the bleeder circuit that comprises second resistance R 2, the 3rd resistance R 3 and the 4th resistance R 4, and this power supply VCC is divided into this threshold values signal STH, and wherein this threshold values signal STH is a threshold voltage.
This light source module 304 comprises control circuit 3041 and luminescence component 3042, and wherein this control circuit 3041 drives the frequency of these luminescence component 3042 conductings or not conducting according to this compare result signal SR, controls the brightness of this luminescence component 3042 according to this.In present embodiment, this control circuit 3041 comprises PNP transistor BJT and the 5th resistance R 5, and wherein the emitter-base bandgap grading of this transistor BJT couples this power supply VCC, base stage couples, collects the utmost point by the 5th resistance R 5 with this voltage output end Vout and this luminescence component 3042 couples.When this compare result signal SR imports high levle or the low level of this transistor BJT, can control emitter-base bandgap grading and base stage two ends whether conducting or open circuit.
This luminescence component 3042 comprises LED and the 6th resistance R 6 in present embodiment.When the signal of the base stage of this transistor BJT input is high levle, emitter-base bandgap grading and the not conducting of the collection utmost point, power supply can't be supplied this light emitting diode by R6, so this luminescence component 3042 is not luminous; When the base input signal of this transistor BJT is low level, emitter-base bandgap grading and the conducting of the collection utmost point, power supply can pass through R6, so this luminescence component 3042 is luminous.
Below will illustrate and compare the embodiment of the invention when ambient brightness is dark and brighter, the action situation of system.
When ambient brightness is dark, lower and the output less current signal of the brightness of the corresponding sensing of this optical sensor is to this RC circuit, when this current signal produces less voltage by this first resistance R 1, for this first capacitor C, 1 charging, because of voltage less, so this first capacitor C 1 arrives the long time of saturated needs, shown in Fig. 5-A, be to be shown in ambient brightness when dark, the magnitude of voltage of this first capacitor C 1 changes, this T1 is that the voltage signal SV of this first capacitor C 1 arrives the required time of saturation voltage of this first capacitor C 1 when ambient brightness is low, and this curve promptly is expressed as the voltage signal SV of systematicness period of change.
When ambient brightness is brighter, the brightness of the corresponding sensing of this optical sensor is higher and current signal that output is bigger to this RC circuit, when this current signal produces a bigger voltage by this first resistance R 1, for this first capacitor C, 1 charging, because of voltage bigger, so this first capacitor C 1 arrives the short time of saturated needs, shown in Fig. 5-B, be to be shown in ambient brightness when brighter, the magnitude of voltage of this first capacitor C 1 changes, wherein T2 is when ambient brightness is higher, and the voltage signal SV of this first capacitor C 1 arrives the required time of saturation voltage of this first capacitor C 1.
Therefore, the voltage change of the signal input part input of this comparison circuit 3031 is also as shown in Fig. 5-A and Fig. 5-B, this threshold voltage that the threshold values input of this comparison circuit 3031 is imported is a fixed value, this comparison circuit 3031 is under dark and brighter environment, output result after these comparison circuit 3031 input signal inputs and threshold values input and the comparison can be the output result of this comparison circuit 3031 when ambient brightness is dark shown in Fig. 6-A respectively shown in Fig. 6-A and Fig. 6-B; Shown in Fig. 6-B the output result of this comparison circuit 3031 when ambient brightness is brighter.When the voltage output end Vout of this comparison circuit 3031 output low level, this first capacitor C 1 can be because of the circuit ground conducting, and with the voltage instantaneous discharge that stores, so after the discharge, this voltage signal SV is lower than this threshold voltage again, make the voltage output end Vout output high levle of this comparison circuit 3031 again, and make this first capacitor C 1 begin charging, so go round and begin again.Therefore when threshold voltage be fixedly the time, at the long T1 of systematicness period of change, this voltage signal SV will surpass this threshold voltage and to make the voltage output end Vout of this comparison circuit 3031 export cycle of this low level also longer, on the contrary, the T2 that the systematicness period of change is short, it is also shorter relatively that this voltage signal SV will surpass the time of this threshold voltage, and it is also shorter that the voltage output end Vout of this comparison circuit 3031 exports the cycle of this low level.
This PNP transistor BJT not conducting when this comparison circuit 3031 voltage output end Vout output high levle, this LED is extinguished, and conducting when low level, make this LED shinny, so by shown in Fig. 5-A and the 5-B as can be known, the accurate position of voltage output end Vout changes, can cause the variation that flickers of this LED, but change frequency that should the standard position is exceedingly fast, and the phenomenon that can persist because of human eye vision is when this PNP transistor is output as high levle, being seen LED remains luminous state, but, fast and slow by the change frequency of this standard position, will cause the brightness size variation of LED.Therefore, cycle at the low level shown in Fig. 6-A is longer, so the occurrence frequency of this PNP transistor BJT conducting is lower, therefore the brightness meeting of this LED reduces, otherwise, cycle at the low level shown in Fig. 6-B is shorter, so the glow frequency of this PNP transistor turns is higher, so the brightness meeting of this LED increases.
Another embodiment of the present invention, be to use sight of the present invention, comprise system capable of automatically adjusting brightness 30, supply unit 701, this system capable of automatically adjusting brightness 30 power supply VCC and point of aim mark portion 704 are provided, has point of aim mark 7041, the light that can be sent by this system capable of automatically adjusting brightness 30 makes this point of aim mark 7041 shinny.
This system capable of automatically adjusting brightness 30 more comprises: photosensitive unit 301, and in order to the brightness of foundation sensing, output sensing signal SI; Charge/discharge road 302 couples this photosensitive unit 301, in order to receiving sensing signal SI by 301 outputs of this photosensitive unit, and according to the voltage signal SV of this sensing signal SI generation rule period of change; Comparing unit 303, more include: threshold voltage circuit 3032 and comparison circuit 3031, wherein this comparison circuit 3031 couples this charge/discharge road 302 and this threshold voltage circuit 3032, in order to this voltage signal SV relatively and threshold values signal STH by these threshold voltage circuit 3032 outputs, and output compare result signal SR; And light source module 304, more comprise: control circuit 3041 and luminescence component 3042, wherein this control circuit 3041 drives the frequency of these luminescence component 3042 conductings or not conducting according to this compare result signal SR, controls the brightness of this luminescence component 3042 according to this.
This supply unit 701 is in order to provide this system capable of automatically adjusting brightness 30 power supply VCC.
This point of aim mark portion 704 has this point of aim mark 7041, can reflect the light that is sent by this system capable of automatically adjusting brightness 30, makes this point of aim mark shinny, and wherein this point of aim mark 7041 can be round dot or cross hairs.
As shown in Figure 7 and Figure 8, for using the sight schematic diagram of the embodiment of the invention, this supply unit 701 of present embodiment provides the power supply VCC in this system capable of automatically adjusting brightness 30, and wherein this supply unit can be a battery.This photosensitive unit 301 is installed on the path that the sight interior lights advances, and with the sensitive context brightness, according to the brightness size of sensing, and controls the luminosity of this light source module 304.In present embodiment, this photosensitive unit 301 is optical sensors 702.In an embodiment, this photosensitive unit 301 can be any sensor light brightness and the device or the assembly of output corresponding signal.
This light source module 304 is light emitting diode 705 in present embodiment, but not in order to restriction the present invention.In an embodiment, this photosensitive unit 301 can also be installed in the position that any surround lighting can pass through on the sight.
This charge/discharge road 302 and this comparing unit 303 are in present embodiment, be integrated in circuit board 703, be installed in this supply unit 701 belows, but not in order to restriction the present invention, in fact, the position of this circuit board installing can be because of the consideration of spatial design and module position, and any position of sight is located in variable makeup.
This point of aim mark portion 704 is a clear glass in present embodiment, this point of aim mark 7041 on this clear glass is reached by the etching cross shape, when this light emitting diode 705 of this clear glass periphery of installing is luminous, this etched position will be shinny, and make this point of aim mark 7041 shinny, wherein this point of aim mark 7041 can also be an examples of dot shaped.In another embodiment, this point of aim mark 7041 is plating reflection materials on this clear glass.
Therefore, when the brightness of these optical sensor 702 sense ambient light incidents brightens, when promptly representing ambient brightness brighter, this charge/discharge road 302 and this comparing unit 303 that the signal of these optical sensor 702 outputs is sent on this circuit board 703 carry out respective action, this compare result signal SR at last, control this light emitting diode 705 corresponding raising brightness, make that this point of aim mark is brighter.On the contrary, when the brightness of these optical sensor 702 sense ambient light incidents is dark, when promptly representing the ambient brightness deepening, the also corresponding reduction brightness of this light emitting diode 705, make these point of aim mark 7041 deepenings, do real-time brightness adjustment so can reach the corresponding ambient brightness of these point of aim mark 7041 brightness of this point of aim mark portion 704.
The ambient brightness size that the present invention is sensed by this photosensitive unit 301, and generation corresponding sense signals SI, and utilize charge/discharge road 302 to be arranged the different charging intervals at different sensing signal SI, use the frequency of the identical compare result signal SR of these comparison circuit 3031 outputs is changed, and control the frequency that flickers of this light source module 304, reach the result who reduces luminosity or improve luminosity.And use sight of the present invention, also when run-home, move to along with object under the environment of any brightness, the user does not need to adjust voluntarily brightness again, sight is can be automatically corresponding according to the brightness of environment adjusts suitable point of aim mark brightness, make that the user can be wholwe-hearted under any ambient brightness changes, improve the chance of lock onto target, can not adjust brightness because of needs again, and the opportunity of missing aiming.
Though the present invention with a plurality of embodiment openly as above; but it is not in order to limiting scope of the present invention, those skilled in the art person, without departing from the spirit and scope of the present invention; can do a little change and retouching, so protection scope of the present invention is as the criterion when looking the claim person of defining.
Claims (10)
1. a system capable of automatically adjusting brightness is characterized in that, comprising:
Photosensitive unit, according to the brightness of sensing, the output sensing signal;
The charge/discharge road couples this photosensitive unit, in order to receiving this sensing signal, and according to the voltage signal of this sensing signal generation rule period of change;
Comparing unit, relatively this voltage signal and a threshold values signal, and according to result relatively, the output compare result signal; And
Light source module according to this compare result signal, is adjusted luminosity.
2. system capable of automatically adjusting brightness as claimed in claim 1 is characterized in that, this comparing unit more comprises:
The threshold voltage circuit is in order to produce this threshold values signal; And
Comparison circuit couples this charge/discharge road and this threshold voltage circuit, is used for relatively this voltage signal and this threshold values signal, and exports this compare result signal.
3. system capable of automatically adjusting brightness as claimed in claim 2 is characterized in that, this threshold voltage circuit is a bleeder circuit.
4. system capable of automatically adjusting brightness as claimed in claim 1 is characterized in that, this light source module more comprises:
Control circuit; And
Luminescence component;
Wherein this control circuit drives the frequency of this luminescence component conducting or not conducting according to this compare result signal, controls the brightness of this luminescence component according to this.
5. system capable of automatically adjusting brightness as claimed in claim 1, it is characterized in that, this charge/discharge road is the RC circuit, comprise first resistance and first electric capacity, this first electric capacity is to passing through this first resistance by sensing signal, produce the charging interval variation, and this voltage signal of corresponding generation rule period of change.
6. a sight is characterized in that, comprising:
System capable of automatically adjusting brightness is adjusted luminosity according to the brightness of sensing;
Supply unit provides this system capable of automatically adjusting brightness power supply; And
Point of aim mark portion has point of aim mark, and the light that can be sent by this system capable of automatically adjusting brightness makes this point of aim mark shinny.
7. sight as claimed in claim 6 is characterized in that, this system capable of automatically adjusting brightness more comprises:
Photosensitive unit, according to the brightness of sensing, the output sensing signal;
The charge/discharge road couples this photosensitive unit, in order to receiving this sensing signal, and according to the voltage signal of this sensing signal generation rule period of change;
Comparing unit, relatively this voltage signal and threshold values signal, and according to result relatively, the output compare result signal; And
Light source module according to this compare result signal, is adjusted luminosity.
8. sight as claimed in claim 7 is characterized in that, this comparing unit more comprises:
The threshold voltage circuit is in order to produce this threshold values signal; And
Comparison circuit couples this charge/discharge road and this threshold voltage circuit, in order to relatively this voltage signal and this threshold values signal, and exports this compare result signal.
9. sight as claimed in claim 7 is characterized in that, this light source module more comprises:
Control circuit; And
Luminescence component, wherein this control circuit drives the frequency of this luminescence component conducting or not conducting according to this compare result signal, controls the brightness of this luminescence component according to this.
10. sight as claimed in claim 7 is characterized in that, this charge/discharge road is the RC circuit, comprise first resistance and first electric capacity, this first electric capacity produces the charging interval variation to passing through this first resistance by sensing signal, and this voltage signal of corresponding generation rule period of change.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN200810169310A CN101713620A (en) | 2008-10-06 | 2008-10-06 | System capable of automatically adjusting brightness and sighting device |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN200810169310A CN101713620A (en) | 2008-10-06 | 2008-10-06 | System capable of automatically adjusting brightness and sighting device |
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| Publication Number | Publication Date |
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| CN101713620A true CN101713620A (en) | 2010-05-26 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN200810169310A Pending CN101713620A (en) | 2008-10-06 | 2008-10-06 | System capable of automatically adjusting brightness and sighting device |
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| CN (1) | CN101713620A (en) |
Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102915656A (en) * | 2011-08-01 | 2013-02-06 | 致伸科技股份有限公司 | Laser pointer capable of automatically adjusting light intensity |
| TWI498699B (en) * | 2013-10-31 | 2015-09-01 | Wistron Corp | Signal balance system, light control system, and signal balance method thereof |
| CN106291906A (en) * | 2015-06-04 | 2017-01-04 | 信泰光学(深圳)有限公司 | Optical devices |
| CN110017728A (en) * | 2018-01-08 | 2019-07-16 | 西安华科光电有限公司 | A kind of adaption brightness adjusting circuit based on object and interior red dot take aim at tool |
| CN115176123A (en) * | 2020-01-17 | 2022-10-11 | 西格绍尔公司 | Target point sight with target illumination sensor |
-
2008
- 2008-10-06 CN CN200810169310A patent/CN101713620A/en active Pending
Cited By (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102915656A (en) * | 2011-08-01 | 2013-02-06 | 致伸科技股份有限公司 | Laser pointer capable of automatically adjusting light intensity |
| TWI498699B (en) * | 2013-10-31 | 2015-09-01 | Wistron Corp | Signal balance system, light control system, and signal balance method thereof |
| US9417650B2 (en) | 2013-10-31 | 2016-08-16 | Wistron Corporation | Signal balance system, light control system, and signal balance method thereof |
| CN106291906A (en) * | 2015-06-04 | 2017-01-04 | 信泰光学(深圳)有限公司 | Optical devices |
| CN110017728A (en) * | 2018-01-08 | 2019-07-16 | 西安华科光电有限公司 | A kind of adaption brightness adjusting circuit based on object and interior red dot take aim at tool |
| CN115176123A (en) * | 2020-01-17 | 2022-10-11 | 西格绍尔公司 | Target point sight with target illumination sensor |
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Application publication date: 20100526 |