Background technology
The studio light that existing photograph industry is used, the triggering method of flashlamp have: line triggers, draw sudden strain of a muscle triggers with flashlamp.Lamp and camera trigger with line, because of wired link to each other easily lamp or camera mixed break, can cause and move inconvenience between lamp and the camera, personnel's inconvenience of walking about, and line is easily broken, causes to dodge with Louing and wastes film.
Draw sudden strain of a muscle and trigger, easily cause and take the photograph the inaccurate of object exposure and influence exposure effect, if low will the causing of the trigger sensitivity of studio light do not glistened with flashlamp.And use with the flashlamp that triggers usefulness and use the expense of battery also very big, the life-span that not only needs frequent charging also to damage flashlamp with rechargeable battery.
Be convenient to narration and understanding, at first draw accompanying drawing:
Summary of the invention
The purpose of this utility model is to provide a kind of infrared ray studio light telepilot, has the characteristics of wireless trigger.
The technical solution of the utility model is: this studio light telepilot, form by telepilot 1 and reception trigger 3.Telepilot comprises shell and hot shoe, and button K is dodged in examination
1, triode BG
1, capacitor C
1Form electronic switching circuit, integrated circuit (IC)
1(LM555), resistance R
1, R
2, capacitor C
2, infrared emission tube V
1-V
5Form the vibration radiating circuit.
Receive trigger and form power switch K by trigger shell, supply socket 2, triggering plug 1 and receiver 4
3, transformer B and bridge rectifier D, electrochemical capacitor C
3Form current rectifying and wave filtering circuit, luminotron LED, resistance R
3Form power indicating circuit, three terminal regulator IC
5(7805), electrochemical capacitor C
4Form filter circuit of pressure-stabilizing, infrared receiving terminal IC
2(TL1380) be the infrared receiver circuit, triode BG
2, resistance R
4, R
5, controllable silicon D
2, diode D
3Form and trigger studio light flasher circuit, electrochemical capacitor C
5, C
6, C
7, resistance R
6, R
7, triode BG
3, BG
4Form on-off circuit, integrated circuit (IC)
3(LM555), compact horn L, capacitor C
8, electric R
8, R
9Form the audio prompt circuit.
Principle of work of the present utility model is: when receiving trigger power switch K
3Close close after, the 220V alternating current through transformer B step-down after bridge rectifier D through electrochemical capacitor C
3Filtering forms DC voltage.Luminotron LDE is through resistance R
3The luminous power supply of doing of current limliting is indicated.DC voltage is through three terminal regulator IC
5Electrochemical capacitor light shines C
4Partly power to triggering and audio switch behind the voltage regulation filtering.After the telepilot hot shoe inserts the camera hot shoe socket, the same K of camera when pressing camera shutter
2Close to close and make telepilot triode BG
1Base stage gets the electric full conducting of closing.Form electronic switch, to integrated road IC
1, resistance R
1, R
2, capacitor C
2Infrared emission tube V
1-V
5The vibration radiating circuit power supply of forming.The oscillatory circuit oscillatory signal is through V
1-V
5Infrared emission tube is installed in the infrared receiving terminal IC of the reception trigger on the studio light to aerial emission infrared signal
2Receive the infrared signal that comes by the telepilot emission, after amplifying shaping, the output two paths of signals, the one tunnel removes to trigger the studio light flasher circuit, and one the tunnel removes on-off circuit, triggers the signal of studio light flasher circuit, makes BG
2The triode conducting is through emitter resistance R
4Current limliting from the collector output voltage through resistance R
5Pressure limiting triggers controllable silicon D
2Conducting makes the C that inserts in the studio light triggering studio light triggering socket
2Rapidly by short circuit, trigger the studio light flash of light, D behind the electricity on the plug
3Be the protection diode, the signal that removes on-off circuit is through electrochemical capacitor C
5Coupling makes triode BG
3Base stage obtains signal and conducting, through resistance R
6Current limliting is to capacitor C
6Charging, capacitor C
6On voltage through resistance R
7To triode BG
4Base-Emitter discharge, make triode BG
4Satisfy and close conducting.Integrated circuit (IC)
3, capacitor C
8, resistance R
8, R
9The audio prompt circuit of forming is because triode BG
4Conducting and electric work produces vibration, drive toy trumpet L sounding and glisten with the prompting studio light.
The utility model is applicable to any camera that has hot shoe socket, comprises Polaroid camera.Do not link to each other with studio light because of it has line, make between camera and the lamp and very big moving range is arranged between the subject, can not influence yet by the accuracy of newspaper object exposure.Can make the low studio light forced trigger flash of light of trigger sensitivity.And the volume of telepilot is little, the power consumptive province, and the shutter not power consumption of being failure to actuate when trigger flashing, has auditory tone cues, the infrared signal strong interference immunity.