JPS584501B2 - remote control device - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION The present invention relates to a remote control device, and more particularly to a remote control device that uses light beams as a remote control signal.

Conventionally, various devices have been proposed that perform various remote controls by wirelessly transmitting remote control signals from a transmitter located at a remote location.

The most commonly used method is to use radio waves as wireless signals, but when transmitting radio waves, there are problems such as radio wave interference, and there are various restrictions such as frequency band limitations and output watt limitations. are doing.

In addition, although it is theoretically possible to provide a variety of remote control distances and control modes using radio wave remote control methods, due to the above constraints, in reality, the distance at which remote control can be performed reliably varies. It is not possible to obtain a very long distance, and due to frequency band restrictions, there is a high risk of malfunction due to mixing of various nozzles.
It has an impractical aspect.

As an alternative method, a method has been proposed that uses light such as ultraviolet light, infrared light, or white light for the remote control signal, but it is difficult to reach the luminous flux itself over a long distance and perform remote control. It is necessary to give directivity to the light flux itself and to reliably irradiate the converged light flux onto the light-receiving property provided in the receiver.

However, in order to increase the distance that can be reached, it is necessary to increase the directivity as much as possible because the light emission output itself cannot be increased significantly due to the capacity of the battery used as a power source for the transmitter. Because of this directivity, even if the receiver to be remotely controlled is located at a short distance, it is necessary to aim the transmitter in the direction of the receiver to ensure that the light beam from the transmitter is incident on the receiver. be.

Although this type of aiming is complicated, it is especially useful when the remote control signal emitted by the light source is emitted for only a short time due to battery capacity, or when using invisible light such as infrared light. , is a necessary operation.

As mentioned above, the object of the present invention is to eliminate the need for the aiming operation that is performed each time during remote control when the distance to be remotely controlled is not a relatively long distance; The aim is to provide a remote control system that enables reliable remote control over a considerable distance by aiming.The main features of this method are the emission energy distribution of the transmitter and the sensitivity characteristic distribution of the receiver's light-receiving element. The purpose is to realize the above functions by combining the following.

Hereinafter, specific embodiments of the present invention will be described with reference to the drawings.

FIG. 1 shows a transmitting unit 1 of a remote control device according to the present invention, in which 2 is a front light emitting opening, 3 is a remote control operation surface, 4 is a ready lamp confirmation window,
5 is a channel selector, switch knob, 6 is a power switch, 7 is a remote control operation button, 8A,
Reference numeral 8B indicates a protrusion formed on the side wall that forms a sight, 9 a battery cover plate, and 10 a suspension string.

As shown in FIG. 2, an infrared filter plate 10 is provided in the opening 2.
are fitted, behind which the xenon tube 12 and reflector 11 are placed.

The reflector 11 is integrally composed of two reflective umbrella parts 11A1.
The xenon tube 12 emitted light beam is emitted from the xenon tube 12 in the peripheral direction by the 11A part, and by the 11B part,
It is made to converge in the direction of the central axis and has directivity in that direction.

Naho B indicates a battery housed in the battery compartment.

FIG. 4 shows an electric circuit incorporated in the first illustrated transmitting unit 11, in which B is a battery, SM is a switch that opens and closes in conjunction with the power switch 6, and DC is a known DC-DC. A booster circuit that boosts the battery B voltage to a high voltage of several hundred square meters, CM is the main capacitor, and Ne is the resistor R.
When the neon tube connected in parallel to the main capacitor through 1 is charged and the capacitor CM is fully charged, it lights up and the window 4
Visible from the outside through.

L is a coil to sustain the light emission time,
C4 is a control signal forming capacitor, SCR1 is a semiconductor controlled rectifier connected to capacitor C4, R2 is a resistor,
C2 is a trigger capacitor, S1 is a switch that closes in conjunction with the press of button 7, T is a trigger transformer, D1 is a constant voltage diode, Co1 to Co3 are small capacitors forming a timer circuit, Sc is a selector switch knob 5 The switches that can be switched in conjunction with are shown.

When the power switch 6 is turned on, a high voltage output is obtained by the booster circuit DC and the capacitor CM is charged.

When charging is complete, the neon tube Ne lights up, and after confirming it through the window 4, press the remote control operation button 7, the switch S1 closes, and the trigger capacitor C2
The electric charges charged in this flow into the primary winding of the trigger transformer T.

As a result, the xenon tube 12 is triggered by the high pressure induced on the secondary side of the trigger transformer, and the main capacitor CM
The charges stored in the xenon tube 12 are discharged to the xenon tube 12, and the xenon tube emits flash light.

At the time of this light emission, the control signal forming capacitor C4 is charged via the resistor R4 at the same time as the switch S1 is turned on, and after a predetermined time, the SCR1 becomes conductive due to the gate current of the SCR1 element.

As a result, the charge of the main capacitor CM temporarily flows into the capacitor CD1 selected by the selector switch SC, and the current flowing through the xenon tube 12 decreases, so that the amount of light emitted temporarily decreases.

When charging of the capacitor Co1 is completed, the current from the main capacitor CM flows into the xenon tube 12 again, and the amount of light emission increases.

Therefore, as shown in Figure 4, the light emitting characteristics of the xenon tube are such that it attenuates by 1 after a time t1 determined by the time constant circuits R4 and C'4, and increases again after a time t2 determined by the capacitance of the capacitor Co1. 10, only infrared components are emitted.

Furthermore, as shown in FIG. 6, the emission energy distribution is determined by focusing the light source, that is, in the central axis direction of the xenon tube 12, in other words, with the maximum energy in the direction of 90 degrees with respect to the infrared filter plate 10. 11B, and in the peripheral declination direction, in other words, 3 with respect to the infrared filter plate 10.
In the ranges of 0° to 60° and 120° to 150°, the reflective umbrella portion 11A provides a luminous flux having approximately constant energy intensity.

FIG. 3 shows a camera 200 that can be remotely controlled and equipped with a receiving unit 100 that constitutes a receiving section of a remote control device according to the present invention.

Naho 300 indicates a known electric winding device attached to the bottom of the camera 200.

Reference numeral 101 indicates a light-receiving section opening of the receiving unit 100, behind which a light-receiving element is arranged.

Reference numeral 102 indicates a selector switch knob, 103 indicates a continuous shooting/single frame shooting switching button, and 104 indicates a power switch.

FIG. 5 is a third illustration, which is incorporated into the receiving unit 100.
It shows the main parts of the electric circuit, where PD is a light receiving element, D2 is a constant voltage diode, C5 and C6 are capacitors and resistors forming a differential circuit, D3 is a diode, and TD is input 11.
a waveform shaping circuit that is set by a rising signal input to the delay circuit and outputs a pulse signal after a predetermined time;
The known delay circuit Sc' constituted by a monostable multivibrator has a selector switch corresponding to the switch Sc for switching the time constant of the monostable multicircuit in accordance with the capacitance of the capacitors Co1 to Co3 of the aforementioned transmitting unit 1 for the delay time. It is linked to knob 102.

G is an AND gate, SCR is a semiconductor controlled rectifier whose conduction is controlled by gate G, and K1 and K2 are camera side lead-out terminals.

A release signal forming circuit Cc is connected to the camera body side via terminals K1' and K2', and an electromagnet Mg for operating the release mechanism of the camera is connected to its output.

The forming circuit Cc is a known pulse circuit in which one electromagnet driving pulse is formed when the input level changes to a high level.

SW is a contact that is linked to the switching knob 103 and closes when the button is set to continuous shooting mode C.

When the light receiving element PD receives the remote control light emitted from the transmitting unit 1, its output generates an electrical signal with the same waveform, which is sliced by the diode D2, differentiated by the differentiating circuits C5 and R8, and then divided by the diode P3. Applied to the gate input, excluding the negative pulse component.

On the other hand, if the delay circuit TD is set in advance to the same channel position as the selector knob 5 on the transmitting unit 1 side by the selector knob 102, a delayed pulse signal will be output after time t2 in FIG. Opening S
CR2 will be made conductive.

As a result, the voltage signal generated across the resistor R9 is the control circuit Cc.
is transmitted through terminals K1-K1' and K2-K2',
The electromagnet Mg is excited to remotely control the camera release.

The light receiving element PD has a light receiving sensitivity as shown in FIG. 7 when a general photovoltaic diode or the like is used.

That is, it has a characteristic that it exhibits maximum sensitivity (100%) for a light beam incident from a direction perpendicular to the surface of the light-receiving section aperture 101, and the sensitivity gradually attenuates as the angle of deviation increases.

Therefore, considering the emission energy distribution on the transmitting unit side, the range that can respond to the remote control light from the transmitting unit can be approximately expressed by the product of the sensitivity distribution of the photodetector PD and the energy distribution, as shown in Fig. 8. As shown, the highest reach can be obtained when the source and the light receiving surface are positioned approximately parallel to each other.

In the above configuration, when performing remote control, if the receiving unit 100 is located at a distance from the transmitting unit 1, as shown in FIG. Since only the light beam converged by the reflector 11B reaches the direction of the central optical axis of the lens 12, use the sights 8A and 8B as shown in FIG. When button 7 is pressed, remote control as described above is performed.

On the other hand, when the receiving unit 100 is placed at a distance that is not too far away, as shown in FIG. growing.

In other words, the light receiving surface of the light receiving element PD and the infrared filter plate 10
There is no problem as long as it is within the range of θ2 and θ1, so there is no need to take aim with the sight. Point the filter plate 10 in the direction of the light-receiving element surface of the receiving unit as shown in Figure 10, and press the operation button. 7, a remote control light is generated in response to this, and the camera 100 is released as described above.

As described above, in the present invention, the energy distribution of the luminous flux emitted from the transmitting unit is divided into areas with strong directivity,
The sensitivity characteristics of the light source and light receiving element are combined so that the peripheral area has an area with an intensity of approximately a certain level or more, and the aim is made so that the strong directivity of the remote control light can be used only at long distances. In other cases, the remote control operation can be performed by simply pointing the transmitting unit toward the receiving unit, which has the advantage of making remote control operation easy and improving operability. This provides an extremely excellent remote control device.

Incidentally, in the above embodiment, a reflector was used to form a light beam with an energy distribution as shown in Figure 6, but it goes without saying that a focusing lens may be used alone or in combination to obtain a beam with a desired distribution intensity.

[Brief explanation of the drawing]

FIG. 1 is a front view of a remote control device transmitting unit to which the present invention is applied, and FIG. 2 is a first illustrated transmitting unit A.
-A sectional view; FIG. 3 is a configuration diagram in which a remote control device receiving unit to which the present invention is applied is attached to a camera;
Fig. 4 is an electrical circuit diagram of the first illustrated transmitting unit, Fig. 5 is an electrical circuit diagram of the second illustrated receiving unit, Fig. 6 is a luminous energy intensity distribution diagram of the first illustrated transmitting unit, and Fig. 7 is a diagram of the second illustrated receiving unit. A sensitivity characteristic diagram of the light receiving element of the receiving unit of the unit, Figure 8 is a correlation diagram between remote controllable distance and angle, Figure 9 is a usage diagram of the first illustrated transmitting unit, and Figure 10 is a diagram of the first illustrated transmitting unit. 1 and 2 show diagrams of other usage modes. 1: Transmission unit, 8A, 9B: Sight, 11A, 11
B: Reflector, 12: Xenon tube, 100: Receiving unit, PD: Light receiving element.

Claims (1)

[Claims] 1 In a remote control device that performs remote control by receiving control light emitted from a transmitter at a receiver, a remote controller is used to provide the control light with different directivity depending on the distance from the transmitter to the receiver. Deflection means for distance and short distance are provided, and the central part of the control light is provided with a directional area having a sharp deflection angle by the deflection means for long distance, and the deflection means for short distance is provided in the peripheral part. What is claimed is: 1. A remote control device having a directional area having a corresponding declination angle, and further comprising a transmitting section equipped with a sight for aiming at the receiving section, which is used when the receiving section is located at a long distance.