JP3060267B2 - Spotlight irradiation area control device - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a control device for controlling the direction of illumination of a spotlight for illuminating an actor or the like on a stage or a floor of a theater or a banquet hall, and the opening angle of the illumination light.

[0002]

2. Description of the Related Art FIG. 4 is a block diagram showing a configuration example of an example of a conventional spotlight irradiation area control device.
In the figure, 51 is a lamp body, 52 is a potentiometer for detecting the rotation amount of the horizontal rotation control motor 54 of the lamp body 51 and outputting a voltage signal according to the rotation amount, 53 is for the vertical rotation of the lamp body 51. A potentiometer for detecting the amount of rotation of the control motor 55 and outputting a voltage signal corresponding to the amount of rotation, 60 is a control motor 54 for horizontal rotation of the lamp body 51.
A comparator for comparing the set value of the amount of rotation with the actual detection value and outputting a control signal when there is a difference. 61 is a set value of the amount of rotation of the control motor 55 for vertical rotation of the lamp body 51 and the actual detected value. And a comparator that outputs a control signal when there is a difference, and these constitute the movable spotlight 50.

Reference numeral 56 denotes a joystick, 58 denotes a PAN data register for converting a horizontal operation amount of the joystick 56 into a voltage signal corresponding to a rotation amount of the horizontal rotation control motor 54, and 59 denotes a vertical operation of the joystick 56. This is a TILT data register that converts the amount into a voltage signal corresponding to the rotation amount of the vertical rotation control motor 55, and a PAN data register 58 and a TILT data register 59 constitute a control unit 57.

In such a spotlight irradiation area control device, a person operates the joystick 56 while looking at the irradiation area of the spotlight. For example, the operation amount of the joystick 56 in the horizontal direction is controlled by the PAN data register 58 in the horizontal direction. The voltage signal is converted into a voltage signal corresponding to the rotation amount of the operation control motor 54 and output to the comparator 60.
In the comparator 60, this voltage signal and the potentiometer 5
2 detects the rotation amount of the horizontal rotation control motor 54 and compares it with a voltage signal to be output. If there is a difference, the horizontal rotation control motor 54
The control signal is output to the The above describes the control in the horizontal direction, but the same applies to the control in the vertical direction.

However, in such a spotlight irradiation area control device, the spotlight is not moved manually, but it largely depends on human experience and intuition, and depending on the operator, accurate and smooth control is required. It can be difficult. Also, a method has been devised in which the irradiation direction is calculated and controlled based on spotlight mounting position data by designating the irradiation position on the stage or the like. To specify as the irradiation position,
If the optical axis is not perpendicular to the horizontal plane on the stage or the horizont plane on the back of the stage, the irradiation point will not be at the center of the irradiation area, the indication of the area to be irradiated will be shifted, and the specification of the area to be irradiated will be considered. Therefore, there is a problem that the opening angle of the irradiation light needs to be separately controlled.

[0006]

SUMMARY OF THE INVENTION The present invention has been made in view of the above circumstances, and it is possible to control an irradiation direction of a spotlight and an opening angle of the irradiation light by designating an irradiation area. An object of the present invention is to provide an area control device.

[0007]

A spotlight irradiation area control device according to the present invention proposed to achieve the above object is provided with a control motor for horizontal rotation and a control motor for vertical rotation. In a spotlight irradiation area control device for controlling a direction, a data input unit, a spotlight attachment position data register for storing and setting a spotlight attachment position, an irradiation area position data register for storing and setting an irradiation area position, and an arithmetic unit A FOCUS data register for storing and setting the opening angle of the irradiation light; and a control motor for controlling the opening angle of the irradiation light. The spotlight attachment position data input to the data input unit, and the irradiation Is the position data of two intersections between the vertical line including one point on the optical axis of the light and the edge of the irradiation area of the irradiation light? By the calculation unit calculates the opening angle and the irradiation direction of the irradiation light, and has a configuration for controlling the opening angle and the irradiation direction of the irradiation light.

[0008]

In the spotlight irradiation area control apparatus according to the present invention, the spotlight mounting position data input to the data input unit, a vertical line including one point on the optical axis of the irradiation light, and the irradiation of the irradiation light are used. The calculation unit calculates the irradiation direction and the opening angle of the irradiation light from the position data of the two intersections with the edge of the area, thereby controlling the irradiation direction and the opening angle of the irradiation light. The instruction is not shifted, and the size of the area to be irradiated can be controlled.

[0009]

DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS An embodiment of the present invention will be described below with reference to the accompanying drawings. FIG. 1 is a block diagram showing a configuration example of an example of a spotlight irradiation area control device according to the present invention. 4 are denoted by the same reference numerals, and description thereof is omitted. In the drawing, reference numeral 11 denotes a lamp body whose opening angle of irradiation light can be adjusted by moving a condenser lens or the like;
Is a potentiometer that detects the rotation amount of the opening angle control motor 13 of the irradiation light of the lamp body 11 and outputs a voltage signal corresponding to the opening rotation amount, and 19 is a potentiometer of the opening angle control motor 13 of the irradiation light of the lamp body 11. A comparator that compares the set value of the rotation amount with the actual detection value from the potentiometer 12 and outputs a control signal when there is a difference, and these are movable together with the horizontal rotation control motor 54 and the vertical rotation control motor 55. The spotlight 10 is configured.

Reference numeral 14 denotes a data input unit including a numeric keypad, a digitizer, etc., 15 denotes an irradiation area position data register for storing and setting the irradiation area position data input by the data input unit 14, and 16 denotes a setting for storing the mounting position of the spotlight. Spotlight mounting position data register,
Reference numeral 17 denotes a horizontal rotation angle, a vertical rotation angle, and an opening of irradiation light from the spotlight attachment position data stored and set in the spotlight attachment position data register 16 and the irradiation area position data stored and set in the irradiation area position data register 15. A calculation unit 18 for calculating the angle is a FOCUS data register that converts the opening angle of the irradiation light calculated by the calculation unit 17 into a voltage signal corresponding to the rotation amount of the irradiation light opening angle control motor 13. Constitutes the control unit 20 together with the PAN data register 58 and the TILT data register 59.

The operation of the spotlight irradiation area control device having such a configuration will be described below. When it is desired to illuminate a spotlight on a vertical surface such as the horizont surface on the back of the stage, as shown in FIG. 2, the edge of the irradiation area to be illuminated on the vertical surface s and the point P on the optical axis of the irradiation light are determined. The position data (x1, y1, z1) and (x1, y1, z2) of the two intersections P1, P2 with the included vertical line RP0 are input from the data input unit 14.

The arithmetic unit 17 calculates the two position data (x
1, y 1, z 1), (x 1, y 1, z 2) and the position data (x, y, z) of the spotlight mounting position Q input in advance, the following three equations (1), (2) ,
(3)

[0013]

(Equation 1)

To calculate α, which is the horizontal rotation angle θ, the vertical rotation angle φ, and the opening angle of irradiation light / 2, and calculate each of them as PA
Input to the N data register 58, the TILT data register 59, and the FOCUS data register 18. PAN data register 58, TILT data register 59 and F
In the OCUS data register 18, the horizontal rotation control motor 54, the vertical rotation control motor 55, and the irradiation corresponding to the input horizontal rotation angle θ, vertical rotation angle φ, and α, which is the opening angle of the irradiation light / 2. The signal is converted into a voltage signal corresponding to the rotation amount of the light opening angle control motor 13 and output to the comparators 60, 61, and 19, respectively.

In each of the comparators 60, 61 and 19, P
AN data register 58, TILT data register 59
And the set value (voltage signal) input from the FOCUS data register 18 and the potentiometers 52, 53, 12
The control signals are output to the control motor 54 for horizontal rotation, the control motor 55 for vertical rotation, and the opening angle control motor 13 for the irradiation light when there is a difference between the actual detection values and the actual detection values.

When it is desired to illuminate a spotlight on a horizontal plane or the like on the stage, as in the case of the above-mentioned vertical plane, FIG.
As shown in the figure, the position data (x
(1, y1, 0) and (x2, y2, 0) are input from the data input unit 14. The operation unit 17 calculates the position data (x1, y1, z) of the spotlight attachment position Q from the two position data (x1, y1, 0) and (x2, y2, 0). The following three equations (4), (5),
(6)

[0017]

(Equation 2)

, The horizontal rotation angle θ, the vertical rotation angle φ, and α, which is the opening angle of irradiation light / 2, are obtained.
Input to the N data register 58, the TILT data register 59, and the FOCUS data register 18. The following is the same as the case where it is desired to illuminate the spotlight on the vertical plane.

[0019]

According to the spotlight irradiation area control apparatus of the present invention, the spotlight mounting position data input to the data input unit, the vertical line including one point on the optical axis of the irradiation light, and From the position data of the two intersections with the edge of the irradiation area of the irradiation light, the calculation unit calculates the irradiation direction and the opening angle of the irradiation light, thereby controlling the irradiation direction and the opening angle of the irradiation light. The indication of the area to be irradiated does not shift, and the size of the area to be irradiated can be controlled.

[Brief description of the drawings]

FIG. 1 is a block diagram showing a configuration example of an example of a spotlight irradiation area control device according to the present invention.

FIG. 2 is a diagram illustrating a relationship between a mounting position of a spotlight and an irradiation area on a vertical plane for explaining an operation of the spotlight irradiation area control device according to the present invention.

FIG. 3 is a diagram showing the relationship between the mounting position of the spotlight and the irradiation area on the horizontal plane for explaining the operation of the spotlight irradiation area control device according to the present invention.

FIG. 4 is a block diagram showing a configuration example of an example of a conventional spotlight irradiation area control device.

[Explanation of symbols]

 11: Lamp (spotlight) 13: Control motor for controlling the opening angle of irradiation light 14: Data input unit 15: Irradiation area position data register 16: Spotlight mounting position data register 17 arithmetic unit 18 FOCUS data register

──────────────────────────────────────────────────の Continuation of the front page (51) Int.Cl. ⁷ identification code FI // F21W 131: 406 (58) Field surveyed (Int.Cl. ⁷ , DB name) F21S 10/00 F21S 2/00 F21V 14 / 00 F21V 21/14

Claims (1)

(57) [Claims] 1. A spotlight irradiation area control device having a control motor for horizontal rotation and a control motor for vertical rotation to control the irradiation direction of a spotlight, wherein a data input unit and a spot for storing and setting a spotlight mounting position. A light attachment position data register, an irradiation area position data register for storing and setting an irradiation area position, an arithmetic unit,
A FOCUS data register for storing and setting the opening angle of the irradiation light, and a control motor for controlling the opening angle of the irradiation light, the spotlight attachment position data input to the data input unit, and the irradiation light 1 on the optical axis of
2 between the vertical line including the point and the edge of the irradiation area of the irradiation light
The spotlight irradiation area control device, wherein the calculation unit calculates the irradiation direction and the opening angle of the irradiation light from the position data of the intersections, thereby controlling the irradiation direction and the opening angle of the irradiation light. .