CN2482243Y

CN2482243Y - Laser source lighting device

Info

Publication number: CN2482243Y
Application number: CN 01224371
Authority: CN
Inventors: 林志峰
Original assignee: TOPSEED TECHNOLOGY
Current assignee: TOPSEED TECHNOLOGY
Priority date: 2001-05-23
Filing date: 2001-05-23
Publication date: 2002-03-13
Anticipated expiration: 2011-05-23

Abstract

The utility model provides a laser light source luminescent device, which comprises an input circuit. An output circuit and a control circuit are arranged, wherein the input circuit is provided with a first switch, the output circuit is provided with a laser diode, the control circuit is respectively connected with the input circuit and the output circuit, when the first switch of the input circuit is pressed, the control circuit can continuously start up and shut down the laser diode of the output circuit, to control the flickering state of the laser diode, thereby the damage of the laser to eyes is decreased, and the efficacy of power saving can be attained.

Description

Radium-shine light sources

The utility model relates to a kind of radium-shine light sources, particularly a kind of control by circuit, and the radium-shine light source that its output is glimmered has the radium-shine light sources of protecting eyes and power saving.

When radium-shine indicating device comes out at first, because its definite object thing at a distance to make PowerPoint or teaching usefulness, was subjected to the shortcoming of distance limit with baton before having improved, so gets consumer reception greatly.

Current, known radium-shine indicator circuit as shown in Figure 1, its power supply VCC ' serial connection one resistance R 1 ' and a Zener diode (Zener diode) ZD ', this Zener diode ZD ' also is connected to the emitter-base bandgap grading of PNP transistor Q1 ', the base stage of PNP transistor Q1 ' is connected on the laser diode PD ' utmost point and the variable resistor VR1 ', be used to adjust the luminous intensity of the laser diode LD ' utmost point, the collector electrode of this PNP transistor Q1 ' is connected to base stage and the capacitor C 1 ' of NPN transistor Q2 ', the collector electrode of this NPN transistor Q2 ' is also connected to the LD ' utmost point of laser diode, is used to control the extremely shinny intensity of laser diode LD '.

But the radium-shine indicating device that above-mentioned electronic building brick is formed will cause retina or crystalline topical burn even rotten if direct irradiation is of a specified duration excessively in the time of retina or irradiation eye, thereby cause temporary transient or permanent loss vision.

As from the foregoing, above-mentioned known circuit on reality is used, obviously has inconvenience and exists with shortcoming, and await being improved.

In order to improve known above-mentioned every shortcoming, main purpose of the present utility model is that improved circuit is to change radium-shine ejaculation frequency, though radium-shine flash transmission, because the persistence of vision is, human eye can't be discovered out, and can avoid the infringement of eyes, and reduce power output.

To achieve these goals, the utility model mainly provides a kind of radium-shine light sources, and it comprises:

One input circuit, it is provided with first switch:

One output circuit, it is provided with laser diode; And

One control circuit connects this input circuit and output circuit respectively, and when first switch of this input circuit was pressed, this control circuit just constantly started and cut out the laser diode of this output circuit, to control the flicker situation of this laser diode.

Described radium-shine light sources, wherein this input circuit further is provided with second switch, and this output circuit also further is provided with infrared diode, and then when this second switch was pressed, it is shinny that this control circuit just starts this infrared diode.

In order further to understand the utility model is to reach technology, means and the effect that predetermined purpose is taked, see also following about detailed description of the present utility model and accompanying drawing, believe the purpose of this utility model, feature and characteristics, when obtaining thus deeply and concrete understanding, yet institute's accompanying drawing only provides reference and explanation usefulness, is not to be used for the utility model is limited.

Fig. 1 is known circuit diagram;

Fig. 2 is a circuit diagram of the present utility model;

Fig. 3 is an action flow chart of the present utility model.

Seeing also shown in Figure 2ly, is the circuit diagram for radium-shine light sources of the present utility model.The utility model is a kind of radium-shine light sources, comprises an input circuit 1, an output circuit 2 and a control circuit 3, wherein:

This input circuit 1 is made up of first switch 11 and second switch 12.

This output circuit 2 is to be connected to form by NPN transistor Q1, Q2, resistance R 1～R5, laser diode D1 and infrared diode D2, when NPN transistor Q1 conducting, laser diode D1 will start luminous, and when NPN transistor Q2 conducting, infrared diode D2 will start luminous.

This control circuit 3 connects this input circuit 1 and output circuit 2 respectively, it is by DC power supply VB, resistance R 6, capacitor C 1, C2, control chip U1 and quartz (controlled) oscillator X1 connect to form, it has the effect of voltage stabilizing, and quartz (controlled) oscillator x1 provides this control circuit 3 required running clock, and control chip U1 then provides the transistor Q1 or the Q2 of conducting output circuit 2.

See also shown in Figure 3ly, circuit flow process of the present utility model is to comprise the following steps:

Does step 21: this control circuit detect whether push switch of user?

If not, then enter power down mode 30, and rebound step 21.

If then enter step 22.

Is step 22: it first switch 11 that this control circuit detects the switch that is pressed?

If not, then skip to step 27:

If, then enter step 23, do the emission of laser light;

Step 23: evaluation is set at 1;

Step 24: the transistor Q1 of this this output circuit of control circuit conducting, it is shinny to make that this laser diode starts:

Step 25: this control circuit is by the transistor Q1 of this output circuit, and it is not shinny to make this laser diode close:

Is step 26: evaluation 5?

If not, then enter step 31, evaluation added 1, and get back to step 24:

If then get back to step 21:

Is step 27: the switch that is pressed a second switch 12?

If not, then skip to power down mode 30, and rebound step 21:

If then enter step 28:

Step 28: the transistor Q2 of this this output circuit of control circuit conducting starts after making this infrared diode through one period time of delay shinny:

Step 29: this control circuit is by the transistor Q2 of output circuit, and it is not shinny to make this infrared diode close, and gets back to step 21.

In view of the above, this circuit can be selected laser light or ultrared emission, and during the laser light emission, continue 5 startups and close, return detected state, to cause laser light to launch with flashing mode, but because of its flicker frequency fast, owing to the reason user of the persistence of vision is difficult for discovering out, therefore, just the injury of laser light can be reduced, and the consumption of power can be reduced eyes; Again, when first switch 11 and second switch 12 all are not pressed, just enter power down mode automatically, have the effect of power saving.

So, by radium-shine light sources of the present utility model, have characteristics described as follows:

(1) can select to launch laser light or infrared ray.

(2) reduce the injury of eyes.

(3) consumed power reduces, comparatively power saving.

The above; it only is the detailed description of specific embodiment of one of the utility model the best and graphic; but feature of the present utility model is not limited thereto; be not to be used to limit the utility model; protection range of the present utility model should be as the criterion with the scope of its claim; the embodiment of all spirit variations similar according to the utility model claim with it; all should be contained in the category of the present utility model; any people who is familiar with this technology in field of the present utility model, can think easily and variation or modify all should be encompassed in the scope of claim of the present utility model.

Claims

1. radium-shine light sources is characterized in that it comprises:

One input circuit, it is provided with first switch:

One output circuit, it is provided with laser diode; And

2. radium-shine light sources according to claim 1, it is characterized in that this input circuit further is provided with second switch, and this output circuit also further is provided with infrared diode, then when this second switch was pressed, it is shinny that this control circuit just starts this infrared diode.