JPH11339509A - Radiation angle control device - Google Patents

Abstract

PROBLEM TO BE SOLVED: To automatically control an irradiated spot diameter (radiation angle) in line with the radiation direction, without inputting a setting of height from an irradiated surface to an installation position of a spot light. SOLUTION: A mirror-scan spot light 1 fixed to a luminaire body 1a , is provided with an installation incline detecting part 7 for detecting an incline with respect to installation of the spot light, a radiation direction computing part 9 for computing the radiation direction based on a detected result of the incline by the installation incline detecting part and on a driven result of the radiation direction by a direction driven result detecting part, a setting memory part 8 for storing a set value ϕ0 of an irradiated spot diameter correspondently to a detection result of the radiation angle by the radiation angle detecting part, and a radiation angle computing/controlling part 10 for computing the radiation angle based on the set value of the irradiated spot diameter stored by the setting memory part and on computation results Pn ', Tn ' of the radiation direction found by the radiation direction computing part 9 and controlling the radiation angle drive part according to the computed radiation angle, and the radiation angle is automatically controlled depending on a change of the radiation direction.

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

The present invention relates to a banquet hall, a hall,
The present invention relates to control of an irradiation range of an irradiation angle control device installed on a stage or the like.

[0002]

2. Description of the Related Art A spotlight controlled by a conventional irradiation angle control device will be described with reference to FIG. FIG. 7 is an explanatory diagram of irradiation angle control of a conventional irradiation angle control device.

[0003] The spotlight 1 changes the irradiation direction by performing two-axis rotations of pan (rotation in a horizontal plane) and tilt (rotation in a vertical plane) with a shaft attached to the ceiling as a supporting axis. It is. Spotlight 1 is used for various studios,
Installed in theaters, halls, banquet halls, etc., the irradiation target position such as the standing position and table position of the performers, the irradiation spot diameter, color, pattern, etc. are prepared in advance, while the lighting production To play.

When the irradiation target M such as an actor moves on the stage, the irradiation distance (the straight-line distance from the irradiation angle control device 1 to the irradiation target M) L changes. The diameter φ of the irradiation spot formed on the substrate changes. For example, as shown in FIG. 4, the irradiation target M is initially standing position of the stage on X _0, a horizontal surface for the tilt of the reference,
The tilt angle θ ₀ , the irradiation distance is L ₀ , and the irradiation angle is ε
_0, the irradiation spot diameter is assumed to be phi _0. Irradiation target M
There was moved to the position of the stage on X ₁ by moving the upper stage, the tilt angle is less theta ₁ next irradiation distance than L ₀ L
As the _1, it remains the irradiation angle epsilon _0, even irradiation spot diameter phi _1, is smaller than the irradiation spot diameter phi ₀ in the course. Therefore, the operator of the irradiation angle control device 1 has performed a very troublesome operation of sequentially adjusting both the irradiation direction and the irradiation spot diameter φ in accordance with the moving irradiation target M by manual operation.

In view of the above, there has been proposed an irradiation angle control device as disclosed in Japanese Patent Publication No. 7-56761, which has improved usability by eliminating such troublesome manual operation of adjusting the irradiation spot diameter φ. . The irradiation angle control device described in Japanese Patent Publication No. 7-56761 previously stores the height H from the irradiated surface to the installation position of the irradiation angle control device, detects the tilt angle θ, and sets the height H
And the tilt angle θ, the irradiation distance L is automatically calculated, the irradiation angle ε is automatically adjusted according to the obtained distance L, and the irradiation spot diameter φ is automatically adjusted.

[0006]

However, in the irradiation angle control device described in Japanese Patent Publication No. 7-56761, it is necessary to input and set the height H from the irradiated surface to the mounting position. Therefore, when used in a hole having a complicated structure or the like, it is necessary to perform an operation of determining the height H based on a design drawing of the hole, which is troublesome. Further, in the conventional irradiation angle control device as described above, since the irradiation direction is changed by changing the direction of the lamp, the rotation of the front surface of the light emitting opening can be performed without changing the direction of the lamp. With respect to an irradiation angle control device of a type in which the irradiation direction is changed by a reflection type mirror (an irradiation angle control device represented by a so-called mirror scan type), it is difficult to keep the irradiation diameter constant according to the change of the irradiation direction. .

SUMMARY OF THE INVENTION The present invention has been made to solve the above problems, and an object of the present invention is to install an irradiation angle control device from a surface to be irradiated at the time of installation of the irradiation angle control device. It is an object of the present invention to provide an irradiation angle control device that does not require a setting input of a height to a position, but eliminates a very difficult operation of simultaneously operating an irradiation direction and an irradiation spot diameter.

[0008]

According to the first aspect of the present invention, an irradiation angle indicating the spread of the irradiation light of the spotlight and an irradiation angle for changing an irradiation direction drive unit for changing the irradiation direction are provided. A control device, comprising: an attachment inclination detection unit for detecting an inclination regarding attachment of the spotlight, wherein when the irradiation direction of the spotlight is changed so as to track a moving irradiation target, irradiation is performed according to the irradiation direction. In an irradiation angle control device that irradiates an irradiation target on a surface to be irradiated with a desired size irradiation spot diameter by changing an angle, an attachment inclination detection unit for detecting an inclination related to attachment of the irradiation angle control device. An irradiation direction calculation unit for calculating the irradiation direction based on the inclination detection result of the mounting inclination detection unit and the driving result of the irradiation direction; A setting storage unit for storing the set value of the diameter, and calculating the irradiation angle based on the setting value of the irradiation spot diameter stored in the setting storage unit and the calculation result of the irradiation direction obtained by the irradiation direction calculation unit. An irradiation angle calculation control unit that controls the irradiation angle according to the calculated irradiation angle is provided, and the irradiation angle is automatically controlled according to a change in the irradiation direction.

According to the second aspect of the present invention, the first aspect is provided.
The illumination angle control device according to claim 1, wherein the spotlight controlled by the illumination angle control device has a fixed direction of a lamp body, and the irradiation direction driving unit rotates to a front surface of a light emitting opening of the lamp body. It is characterized by driving a rotatable movable mirror provided to be possible.

[0010] According to the third aspect of the present invention, the first aspect is provided.
3. The irradiation angle control device according to any one of claims 1 to 2, wherein the irradiation angle calculation control unit is configured to irradiate a desired range toward an irradiation target located on a floor surface, regardless of an irradiation direction of a spotlight. , Which controls the irradiation angle.

According to the fourth aspect of the present invention, there is provided the third aspect.
The illumination angle control device according to claim 1, wherein the illumination angle calculation control unit is configured to determine a first predetermined height and a second predetermined height lower than the first predetermined height, regardless of an irradiation direction of the spotlight. It is characterized in that the irradiation angle is controlled so that the irradiation light falls on a height range between the height and the height.

According to the fifth aspect of the present invention, the first aspect is provided.
3. The irradiation angle control device according to any one of claims 1 to 2, wherein the irradiation angle calculation control unit keeps the irradiation spot diameter projected on the irradiation target substantially constant regardless of the irradiation direction of the spotlight.
It is characterized by controlling the irradiation angle.

[0013]

DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS Hereinafter, a first embodiment of an irradiation angle control device according to the present invention will be described with reference to FIGS.
Will be described in detail with reference to FIG.

[First Embodiment] FIG. 1 is a block diagram illustrating an irradiation angle control device. FIG. 2 is a schematic diagram for explaining a mirror scan type irradiation angle control device.
(a) is a front view, and (b) is a side view. FIG. 3 shows the opening and closing of the iris shutter in the lamp body of the irradiation angle control device.
It is explanatory drawing showing the pattern of adjustment of an irradiation angle. 4A and 4B are schematic diagrams showing the inclination of the irradiation angle control device in a mounted state, where FIG. 4A is a plan view, FIG. 4B is a side view, and FIG. 4C is a front view. FIG. 5 is an explanatory diagram of the irradiation spot diameter formed on the irradiation surface.

The irradiation angle control device 1, light body 1 _a direction of not being fixedly attached to the ceiling surface as moving a radiation angle control device of the mirror scan type, as shown in FIG. 1, the irradiation Direction drive unit 2 and direction drive result detection unit 3
, An optical system component 4, an irradiation angle driving unit 5, an irradiation angle detection unit 6, an attachment inclination detection unit 7, a setting storage unit 8, an irradiation direction calculation unit 9, and an irradiation angle calculation control unit 10. It is configured with.

As shown in FIG. 2, the irradiation direction driving unit 2
Rotating movable reflector 2_aAnd motor 2 _b1, 2_b2With
Be composed. Rotating movable reflector 2_aThe spotlight
1 light 1_aPan and tilt directions on the front of the light emitting aperture
Are provided so as to be rotatable in two axial directions. Motor 2_b1Is times
Rollable movable mirror 2_aTo rotate the pan in the pan direction
Means, motor 2_b2Is a rotating movable mirror 2_aChill
Drive means for rotating in the direction G. Rotating movable type
Reflecting mirror 2_aIs a motor 2 through a gear_b1, 2_b2Rotate from
The force is transmitted, and in two axial directions of the pan direction and the tilt direction
Each rotates independently. That is, the irradiation direction driving unit 2
Is the light 1_aLight source 1 inside_bLight emitted from
Rollable movable mirror 2_aIs reflected by the lamp body 1_a
Even if fixed, the direction of irradiation light (irradiation direction) is
It can be changed independently in two directions, the tilt direction and
It is. In this embodiment, the irradiation direction drive unit 2 is
From the dimmer 11 installed separately from the potlight 1,
Motor 2_b1And motor 2_b2Of the drive angle and times
The driving operation is performed in response to a control signal including the moving direction. Sand
That is, the operator of the light control device 11 is installed in the control room.
Operation input of the setting input means 12 of the light control device 11 and rotation
Movable reflector 2_aRotation of the pan and tilt directions of
They operate remotely.

The direction drive result detection section 3 is provided with angle detection sensors 3 _a1 and 3 _a2 typified by a potentiometer. The angle detection sensor _3a1 detects the rotation angle of the motor _2b1 , and the angle detection sensor _3a2 detects the rotation angle of the motor _2b2 . That is, the direction drive result detection unit 3 detects the drive result of the irradiation direction drive unit 2.

The optical system component 4 includes an iris shutter 4 _a
Will be exemplified. The optical system component 4 opens and closes,
The irradiation angle ε that represents the spread of the irradiation light is adjusted. The illumination angle epsilon, light body 1 _a of the light projecting light collected by the lens 1 _c provided on an opening of the (illumination light), which is an irradiation angle.

The irradiation angle drive unit 5 is configured to include a motor 5 _a, the motor 5 _a is engaged with the iris shutter 4 _a, such as via the gears, to adjust the degree of aperture of the iris shutter 4 _a of the openings . That is, the irradiation angle driving unit 5
Drives the optical system component 4 to change the irradiation angle ε, which represents the spread of the irradiation light. The irradiation angle driving unit 5
In this embodiment, also assumed to be configured so as to be able to open and close control of the iris shutter 4 _a in accordance with an input of the setting input unit 12 is controlled from the dimmer 11.

The irradiation angle detector 6 is configured with an angle detection sensor 6 _a typified by potentiometers. Angle detecting sensor 6 _a detects the rotation angle of the motor 5 _a.
That is, the irradiation angle detection unit 6 detects the driving result of the irradiation angle driving unit 5, that is, the irradiation angle ε.

The mounting inclination detecting section 7 detects the inclination from the reference plane.
A plurality of tilt sensors for detecting tilt are provided. Figure
As shown in FIG. 4, the vertical upward direction is the positive direction of the Z axis.
Consider an XYZ rectangular coordinate system. The first inclination sensor is shown in FIG.
(a) As shown in FIG.
And light fixture 1_aDetecting the tilt angle for mounting
You. The second tilt sensor is, as shown in FIG.
Light body 1 around the X axis with respect to the surface_aInstallation
The inclination angle related to the injuries is detected. The third tilt sensor is
As shown in FIG. 4 (c), around the Y axis with respect to the XY plane
About the light 1 _aDetects tilt angle for mounting
I do. In other words, the mounting inclination detecting unit 7
Light 1 of G1_aAbout mounting on the mounting surface (ceiling)
Detect the inclination of

The setting storage section 8 is provided with a memory, and receives a control command from the setting input means 12 of the light control device 11 and stores setting values including an initial setting value of the irradiation spot diameter and the irradiation angle. It is stored in association with the detection result of the irradiation angle ε read by the detection unit 6.

The irradiation direction calculation unit 9 includes an MPU, and receives a detection result of the attachment inclination of the spotlight 1 with respect to the lamp body 1 _a from the attachment inclination detection unit 7.
When the direction drive result detection unit 3 detects the drive result of the irradiation direction drive unit 2 as an angle value in each of the pan and tilt directions, the direction drive result detection unit 3 transmits the angle value detection result to the irradiation direction calculation unit 9. The irradiation direction calculation unit 9 determines the irradiation direction based on the inclination detection result of the attachment inclination detection unit 7 and the detection result of the irradiation direction angle value by the direction drive result detection unit 3 using the following equation (1). calculate. Note that, in the equation (1), the irradiation direction of the spotlight 1 is initially oriented in the direction of (X, Y, Z) = (0, 0, -1) by the rotatable movable mirror _2a . I do. Next, the process of deriving the equation (1) will be described. In the following, the suffix n of each symbol (lowercase n)
Indicates the order of control results of the irradiation direction of the spotlight 1, and each symbol with the same subscript n indicates the control result of the irradiation direction at that n.

[0024]

(Equation 1)

[Derivation of Equation (1)] First, as described above, an XYZ orthogonal coordinate system in which the vertical upward direction is the positive direction of the Z axis is considered. The irradiation direction calculation unit 9 converts the drive result of the irradiation direction drive unit 2 obtained from the direction drive result detection unit 3 into a pan direction drive result [P _n ] and a tilt direction drive result [T
_n ].

The pan direction driving result [P _n ] is a matrix representing an action of rotating the object in the XYZ orthogonal coordinate system by the angle P _n about the Z axis, and can be expressed by equation (2).

[0027]

(Equation 2)

The tilt direction driving result [T _n ] is X
An object in the YZ rectangular coordinate system is set at an angle T _n around the X axis.
Is a matrix representing the action of rotating only the rotation, and can be expressed by equation (3).

[0029]

(Equation 3)

On the other hand, the irradiation direction calculation unit 9, were obtained from the attaching inclination detecting unit 7, the inclination angle about installing the light body 1 _a, a first inclination [a], the second gradient [b] and ,
It is represented by a third slope [c].

The first tilt [a] represents the tilt angle detected by the first tilt sensor, and the direction in which an object in the XYZ orthogonal coordinate system is turned around the Z axis from the X axis to the Y axis is positive. This is a matrix representing the action of rotating by an angle a so as to be in the direction of rotation, and can be represented by equation (4).

[0032]

(Equation 4)

The second tilt [b] indicates the tilt angle detected by the second tilt sensor, and the direction in which the object in the XYZ orthogonal coordinate system is turned around the X axis from the Y axis to the Z axis is positive. This is a matrix representing the action of rotating by the angle b so as to be in the direction of rotation, and can be expressed by equation (5).

[0034]

(Equation 5)

The third tilt [c] represents the tilt angle detected by the third tilt sensor, and the direction in which an object in the XYZ orthogonal coordinate system is turned around the Y axis from the Z axis to the X axis is positive. This is a matrix representing the action of rotating by an angle c so as to be in the direction of rotation, and can be represented by equation (6).

[0036]

(Equation 6)

The initial irradiation direction of the spotlight 1 (0,
0, -1) are the drive angle _Pn and the tilt direction drive result [Tn] represented by the pan direction drive result [ _Pn ] if the spotlight 1 is attached to the ceiling without any inclination. It is rotated according to the driving angle T _n represented by _n], can be calculated accurately irradiation direction after the rotation. However, in practice, the spotlight 1 has no mounting inclination and cannot be mounted on the ceiling surface.
And the second inclination [b] and the third inclination [c]. In other words, the exact irradiation direction after the rotation (X, Y, Z) = (l n, m n, n n) is (2) with up to (6) from the equation, as in (7) Will be revealed.

[0038]

(Equation 7)

The calculation result obtained by the equation (7) includes the respective rotating actions of the first slope [a], the second slope [b], and the third slope [c], and the pan direction driving is performed. It cannot be obtained only by rotating the result [P _n ] and the tilt direction driving result [T _n ]. Then, after including each rotation action of the first inclination [a], the second inclination [b], and the third inclination [c], the converted driving angle P in the pan direction including the mounting inclination is included. _A matrix [P _n '] representing the rotation action of _n ' only
And the converted drive angle T in the tilt direction including the mounting inclination
_n 'matrix representing the rotation action of only [T _n'] and the calculation result, the calculation results obtained by the equation (7), as an equivalent, can be obtained (8). The matrix [P _n '] representing the driving in the pan direction including the mounting inclination is a matrix representing an operation of rotating the object in the XYZ rectangular coordinate system by the reduced driving angle P _n ' around the Z axis. 9) It is expressed by the equation. Further, a matrix [T _n '] representing the drive in the tilt direction including the mounting inclination is represented by an object in the XYZ rectangular coordinate system,
This is a matrix that represents an action of rotating about the X axis by the converted drive angle T _n ′, and is represented by Expression (10).

[0040]

(Equation 8)

[0041]

(Equation 9)

[0042]

(Equation 10)

Paying attention to the second line of the equation (8), the converted drive angle T _n 'can be obtained. Equation (1) is derived in this manner. In addition, the converted drive angle T _n ′ can be obtained, and the converted drive angle P _n ′ can be obtained based on the first or third row of the equation (8).

[End of Derivation of Equation (1)]
The control unit 10 includes an MPU, and includes a setting storage unit 8
From the initial setting of the irradiation spot diameter stored in the setting storage unit 8.
Constant value φ₀To receive. The irradiation direction calculation unit 9 calculates the irradiation direction.
Calculation result P_n’, T_n'To the irradiation angle calculation control unit 10.
I believe. The irradiation angle calculation control unit 10 determines the initial irradiation spot diameter.
Initial setting value φ₀And the calculation result P of the irradiation direction_n’, T_n'When
Based on the irradiation angle ε_nControl value I for determining _n
Is calculated using the following equation (11).

[0045]

[Equation 11]

The function η is an initial setting value φ of the irradiation spot diameter.
_0, that is, the iris shutter 4 based on the desired irradiation spot diameter and the calculation results P _n ′ and T _n ′ of the irradiation direction.
is a function that gives the iris control value I _n representing the degree of suitable aperture _a of the opening hole. The relationship between the drive angle and the iris control value I _n of the motor 5 _a is previously a data table, held in the irradiation angle calculation control unit 10.

[0047] In other words, the irradiation angle calculation control unit 10, the irradiation direction of the operation result P _n ', T _n' in accordance with, from the data table, the motor 5 _a drive angles and iris control value I _n
Reading the relationship between further so that the irradiation spot diameter phi holds the size of the initial set value phi _0, is to determine the iris control value I _n. That is, the irradiation angle calculation control unit 1
0 controls the irradiation angle driving unit 5 so that the irradiation spot diameter φ maintains the value of the initial set value φ ₀ , and sets the irradiation angle ε _n
Make adjustments. The equation for calculating the irradiation angle ε _n is the following equation (12). Next, the process of deriving the equation (12) will be described.

[0048]

(Equation 12)

[Derivation of Expression (12)] From FIG. 5, the irradiation spot diameter φ _n is expressed by Expression (13). Where h
Represents the height from the floor to the ceiling.

[0050]

(Equation 13)

The initial setting value φ ₀ of the irradiation spot diameter φ is a constant, and the initial setting value φ ₀ is substituted into the equation (13) to obtain (1
4) Obtain the equation. Here, to simplify the calculation process,
(15) Formula is defined. A0 is a constant.

[0052]

[Equation 14]

[0053]

(Equation 15)

Since it is not desired to change the irradiation spot diameter φ _n with the initial setting value φ ₀ , the equations are arranged assuming that the equations (13) and (14) are equal, and the equation (15) is substituted. , (16) are obtained.

[0055]

(Equation 16)

Further, in order to make equation (16) easier to read, equation (16) is replaced with equation (17). a
3, b3, and c3 each represent a coefficient (constant).

[0057]

[Equation 17]

If equation (17) is solved for tan (ε _n ) and the condition of 0 <ε _n is taken into account, equation (12) is obtained.

As described above, when the spotlight 1 changes the irradiation direction so as to track the moving irradiation target, the spotlight 1 changes the irradiation angle ε _n according to the irradiation direction. Is changed, the irradiation target on the irradiation surface is irradiated with an irradiation spot diameter φ ₀ of a desired size.

Therefore, the mounting of the irradiation angle control device is not
Mounting inclination detecting unit 7 for detecting the inclination
The inclination detection result of the attachment inclination detection unit 7 and the direction drive result detection
The irradiation direction based on the driving result of the irradiation direction by the output unit 3
Direction calculation unit 9 for calculating the distance and setting the irradiation spot diameter
Value (initial setting value φ₀) Is the irradiation angle ε at the irradiation angle detection unit 6. _n
Setting storage unit 8 for storing in association with the detection result of
And setting of the irradiation spot diameter stored in the setting storage unit 8.
Value (initial setting value φ₀) And irradiation obtained by the irradiation direction calculation unit 9
Irradiation angle ε based on the direction calculation result_nCalculate and calculate
Irradiation angle ε_nTo control the irradiation angle drive unit 5 according to
Since the angle calculation control unit 10 is provided, the irradiation angle ε_nThe irradiation
Accuracy in consideration of mounting inclination according to changes in direction
Well, can be automatically controlled. Ie spot
For the light 1 operator, the spotlight 1
Of the spotlight 1 from the irradiated surface
Although the setting input of the height h to the installation position is unnecessary.
The irradiation direction and irradiation spot diameter φ_nOperate simultaneously with
This is a very difficult task that becomes unnecessary. In this embodiment,
Then, the irradiation angle calculation control unit 10 illuminates the spotlight 1.
Irradiation spot diameter projected onto the irradiation target regardless of the projection direction
φ_nIs approximately constant (initial setting value φ₀) To keep the illumination angle
Irradiation angle ε_nIs controlled.

[0061] Further, the spotlight 1 is a fixed orientation of the light body 1 _a, the irradiation direction driving section 2, light body 1 _a of the light projecting rotating movable mirror 2 _a provided rotatably at the opening front Even if it is a so-called mirror scan type, the irradiation angle ε _n can be automatically controlled according to a change in the irradiation direction.

In the above-described embodiment, the spotlight 1 is exemplified as a so-called mirror scan type. However, the present invention is not limited to this, and the irradiation angle control device can change the direction of the lamp body by changing the direction of the lamp body. Including the type that changes the irradiation direction, the coordinate system of the irradiation angle control device itself is X
Any irradiation angle control device may be used as long as it can be represented by an YZ orthogonal coordinate system, that is, absolute coordinates in an illumination space where construction is performed, such as a hall. In addition, the way of setting the coordinate system such as the XYZ orthogonal coordinate system may be changed as appropriate.

Further, in the above-described embodiment, the direction drive result detection unit 3 and the irradiation angle detection unit 6 have been described as performing angle detection using a potentiometer, but the present invention is not limited to this, and instead of a potentiometer, the present invention is not limited to this. An encoder may be used.

[Second Embodiment] FIG. 6 is an explanatory view for explaining a range irradiated with irradiation light in a height direction from a surface to be irradiated. The same parts as those in the first embodiment are denoted by the same reference numerals, and detailed description of the same parts will be omitted.

The irradiation angle control device according to the second embodiment differs from the irradiation angle control device according to the first embodiment in that the irradiation spot diameter φ _n is substantially constant (initial setting value φ ₀ ). Instead of keeping the height, the height of the irradiation range is limited. In the field of stage lighting, it is required to irradiate an irradiation target, such as an actor, with light of an appropriate height, for the sake of the effect of production. The present embodiment addresses such a demand.

The irradiation angle calculation control unit 10 uses equation (11).
And the iris control value I_nAfter calculating, the irradiation spot diameter
A first predetermined height representing the illumination height, but not with respect to
Sa B _nFor the initial set value B₀To hold the
Iris control value I_nTo determine. First predetermined height B_nBut
Initial setting value B₀And the irradiation angle ε_nAsk for
The following equation (18) is obtained. Continued (18)
The process of deriving the equation will be described.

[0067]

(Equation 18)

[Derivation of Equation (18)] From FIG. 6, the first predetermined height B _n is represented by Equation (19). here,
h represents the height from the floor surface to the ceiling, and h ′ represents a second predetermined height B _ln that is lower than the first predetermined height B _n . The second predetermined height B _ln represents the height from the floor at the point where the direction of the irradiation direction (center of the optical axis) intersects with the irradiation target. Further, d _n, from the point on the floor surface of the irradiation angle control unit vertically downward, representing the distance up to the irradiation spot diameter end.

[0069]

[Equation 19]

First predetermined height B_nInitial settings for
Value B₀Is a constant and the initial set value B ₀Into equation (19)
To obtain equation (20). Here, the calculation process is simplified
(21) is defined. A1 is a constant.

[0071]

(Equation 20)

[0072]

(Equation 21)

The first predetermined height B _n is set to an initial set value B _0.
(19) and (20)
Assuming that the expression is equal to the expression, if the expression is rearranged and the expression (21) is substituted, the expression (22) is obtained.

[0074]

(Equation 22)

Further, in order to make equation (22) easier to read, equation (22) is replaced with equation (23). a
5, b5 and c5 each represent a coefficient (constant).

[0076]

(Equation 23)

Solving equation (23) for tan (ε _n ) and taking into account the condition 0 <ε _n gives equation (18).

As described above, when the spotlight 1 changes the irradiation direction to track the moving irradiation target, the spotlight 1 changes the irradiation angle ε _n according to the irradiation direction. Is changed, the object to be irradiated on the surface to be irradiated is irradiated only within the range of the desired first predetermined height _Bn .

A face portion of an irradiation target such as an actor
It may be possible to aim for a production effect by irradiating only
It is required to irradiate light only to the height corresponding to the part
You. That is, the second predetermined height B from the floor surface_lnUntil the light
Without the second predetermined height B _lnAbove the first
Predetermined height B_nIrradiation range B which is the range of_unOnly
It needs to be illuminated. Upper irradiation range B_unThe act
A height range corresponding to the face of a technician shall be represented.

In this case, the upper irradiation range _Bun may be substituted for the first predetermined height _Bn in the equation (19). That is, equation (19) is represented as equation (24). Here, Equation (25) is defined to simplify the calculation process as in the case _where only the first predetermined height _Bn is limited. A2 is a constant.

[0081]

(Equation 24)

[0082]

(Equation 25)

As in the case _where only the first predetermined height B _n is limited, the upper irradiation range B _un is not desired to be changed to the initial set value B _u0. 24)
Assuming that the expression when n = 0 is equal to the expression, the expression is rearranged and the expression (26) is obtained by substituting the expression (25). a7, b7, and c7 each represent a coefficient (constant).

[0084]

(Equation 26)

By solving equation (26) for tan (ε _n ) and adding the condition of 0 <ε _n , equation (27) is obtained.

[0086]

[Equation 27]

[0087] irradiation angle calculation control unit 10, so as to maintain the state that was substantially equal to the magnitude of (27) performs calculation in equation initial set value B _u0 upper irradiation range B _un, i.e., only to maintain the state that the irradiated portion of the face of the irradiation target, such as actor, controls the adjustment of the irradiation angle epsilon _n.

Therefore, the irradiation angle calculation control unit 10 irradiates the irradiation light from the surface to be irradiated (floor surface) to a height of not more than the first predetermined height _Bn regardless of the irradiation direction of the spotlight 1. As described above, since the irradiation angle drive unit 5 controls the irradiation angle ε _n , the operation of tracking and irradiating the irradiation target while maintaining the first predetermined height B _n can be automatically performed, and the effect of the effect A high spotlight 1 can be provided.

Further, the irradiation angle calculation control section 10 controls the first predetermined height B _n irrespective of the irradiation direction of the spotlight 1.
The irradiation angle drive unit 5 sets the irradiation angle ε _n so that the irradiation light falls on a height range between a lower second predetermined height B _ln and a first predetermined height B _n. Control.
The operation of tracking and irradiating the irradiation target by irradiating only the width in the height direction between the first predetermined height B _n and the second predetermined height B _ln can be automatically performed, and further producing effect. High spotlight 1 can be provided.

In the above embodiment, the spotlight 1 is of a so-called mirror scan type. However, the present invention is not limited to this, and the irradiation angle control device can change the direction of the lamp body by changing the direction of the lamp body. Including the type that changes the irradiation direction, the coordinate system of the irradiation angle control device itself is X
Any irradiation angle control device may be used as long as it can be represented by an YZ orthogonal coordinate system, that is, absolute coordinates in an illumination space where construction is performed, such as a hall. In addition, the way of setting the coordinate system such as the XYZ orthogonal coordinate system may be changed as appropriate.

In the above embodiment, the direction drive result detecting section 3 and the irradiation angle detecting section 6 have been described as performing angle detection using a potentiometer. However, the present invention is not limited to this. Instead of the potentiometer, the present invention is not limited to this. An encoder may be used.

Further, in each of the above embodiments, the irradiation angle control device has been described as being constituted by hardware and software mounted on the spotlight. However, the present invention is not limited to this. The angle control device may be configured by mounting a mountable component on a dimming console installed separately from the spotlight.

Further, the direction drive result detecting section 3 and the irradiation angle detecting section 6 have been described by way of example in which an angle is detected by a potentiometer. However, the present invention is not limited to this, and an encoder may be used instead of the potentiometer.

[0094]

According to the first aspect of the present invention, there is provided an irradiation angle control device for changing an irradiation angle representing the spread of irradiation light of a spotlight and an irradiation direction drive unit for changing the irradiation direction. And a mounting inclination detecting unit for detecting a tilt regarding mounting of the spotlight, and when the irradiation direction of the spotlight is changed so as to track a moving irradiation target, the irradiation angle is changed according to the irradiation direction. In the irradiation angle control device for irradiating the irradiation target on the irradiated surface with the irradiation spot diameter of a desired size by the spotlight, a mounting inclination detecting unit for detecting the inclination related to the mounting of the irradiation angle control device, and the mounting An irradiation direction calculation unit that calculates the irradiation direction based on the inclination detection result of the inclination detection unit and the driving result of the irradiation direction, and a setting value of the irradiation spot diameter. An irradiation angle calculated based on the setting value of the irradiation spot diameter stored in the setting storage unit and the calculation result of the irradiation direction obtained by the irradiation direction calculation unit; An irradiation angle calculation control unit that controls the irradiation angle according to the angle is provided, and the irradiation angle is automatically controlled according to a change in the irradiation direction.
In accordance with the change in the irradiation direction, automatic control can be performed with high accuracy while taking into account the mounting inclination. That is, for the operator of the irradiation angle control device, during the installation of the spotlight, while setting input of the height from the irradiated surface to the installation position of the spotlight is unnecessary,
A very difficult operation of simultaneously controlling the irradiation direction and the irradiation spot diameter becomes unnecessary.

In the invention according to claim 2, claim 1
In addition to the effects of the invention described above, the spotlight controlled by the irradiation angle control device has a fixed direction of a lamp body, and the irradiation direction driving unit is rotatable in front of a light emitting opening of the lamp body. In order to drive the rotatable movable mirror provided on the spotlight, even for spotlights with fixed lamps, the irradiation angle should be automatically and accurately controlled in consideration of the mounting inclination according to the change in the irradiation direction. Can be. That is, the operator of the irradiation angle control device does not need to input the height from the surface to be illuminated to the installation position of the spotlight when installing the irradiation angle control device. A very difficult task of operating both at the same time becomes unnecessary.

In the invention according to claim 3, claim 1
In addition to the effects of the invention described in the first to third aspects, the irradiation angle calculation control unit is configured such that, regardless of the irradiation direction of the spotlight, the irradiation light hits a desired range toward the irradiation target located on the floor surface. Because it is to control the irradiation angle, the task of tracking and irradiating the irradiation target while maintaining the predetermined range of the desired range,
It can be performed automatically and can operate a spotlight with high effect.

In the invention according to claim 4, claim 3
In addition to the effects of the invention described, the irradiation angle calculation control unit,
Irrespective of the irradiation direction of the spotlight, the irradiation light falls on a height range between a first predetermined height and a second predetermined height lower than the first predetermined height, Since the irradiation angle is controlled, a first predetermined height,
The operation of tracking and irradiating the irradiation target so as to irradiate only the width in the height direction with the second predetermined height can be automatically performed, and an irradiation angle control device with a high effect can be provided.

In the invention according to claim 5, claim 1 is
In addition to the effects of the inventions described in the above, the irradiation angle calculation control unit controls the irradiation angle so as to keep the irradiation spot diameter projected on the irradiation target substantially constant regardless of the irradiation direction of the spotlight. Therefore, the irradiation angle of the spotlight can be automatically controlled in accordance with a change in the irradiation direction, with high accuracy, taking into account the mounting inclination of the spotlight and maintaining the irradiation spot diameter substantially constant. That is,
The operator of the irradiation angle control device irradiates the irradiation direction and the irradiation spot diameter while setting the height from the irradiated surface to the installation position of the spotlight when installing the spotlight. The extremely difficult work of operating simultaneously to keep the spot diameter substantially constant becomes unnecessary.

[Brief description of the drawings]

FIG. 1 is a block diagram illustrating an irradiation angle control device according to a first embodiment of the present invention.

FIG. 2 is a schematic view illustrating a mirror scan type spotlight according to the first embodiment;

FIG. 3 is an explanatory diagram showing a pattern of adjusting an irradiation angle by opening and closing an iris shutter in a lamp body of the spotlight.

FIG. 4 is a schematic diagram showing an inclination of the spotlight when the spotlight is attached.

FIG. 5 is an explanatory diagram of the diameter of an irradiation spot formed on the surface to be irradiated;

FIG. 6 is an explanatory diagram illustrating an irradiation angle control device according to a second embodiment of the present invention in a height direction from a surface to be irradiated, which is irradiated with irradiation light.

FIG. 7 is an explanatory diagram of irradiation angle control of a conventional irradiation angle control device.

[Explanation of symbols]

REFERENCE SIGNS LIST 1 spotlight 1 _a lamp 2 irradiation direction drive unit 2 _a rotatable movable mirror 3 direction drive result detection unit 4 optical system component 5 irradiation angle drive unit 6 irradiation angle detection unit 7 attachment inclination detection unit 8 setting storage unit 9 irradiation Direction calculation unit 10 irradiation angle calculation control unit ε _n irradiation angle φ _n irradiation spot diameter φ ₀ irradiation spot diameter setting value B _n first predetermined height B _ln second predetermined height P _n ', T _n '' Calculation result of irradiation direction

 ──────────────────────────────────────────────────続 き Continued on the front page (72) Inventor Kenichi Hagio 1048 Kazuma Kadoma, Kadoma City, Osaka Inside Matsushita Electric Works, Ltd.

Claims (5)

[Claims] 1. An irradiation angle control device for changing an irradiation angle representing the spread of irradiation light of a spotlight and an irradiation direction drive unit for changing an irradiation direction, wherein the inclination detecting device detects an inclination related to the attachment of the spotlight. When the irradiation direction of the spotlight is changed so as to track the moving irradiation target, the irradiation angle is changed according to the irradiation direction, so that the spotlight irradiates the irradiation target on the irradiated surface. In the irradiation angle control device for irradiating the irradiation with the irradiation spot diameter of a desired size, a mounting inclination detection unit for detecting the inclination related to the mounting of the irradiation angle control device, the inclination detection result of the mounting inclination detection unit and the irradiation direction An irradiation direction calculation unit for calculating the irradiation direction based on the driving result, a setting storage unit for storing a set value of the irradiation spot diameter, An irradiation angle calculation for calculating an irradiation angle based on the irradiation spot diameter set value stored in the setting storage unit and the irradiation direction calculation result obtained by the irradiation direction calculation unit, and controlling the irradiation angle according to the calculated irradiation angle. An irradiation angle control device, comprising a control unit, wherein the irradiation angle is automatically controlled according to a change in the irradiation direction. 2. A spotlight controlled by the irradiation angle control device, wherein a direction of a lamp body is fixed, and the irradiation direction drive section is rotatably provided on a front surface of a light emitting opening of the lamp body. The irradiation angle control device according to claim 1, wherein the movable reflection mirror is driven. 3. The irradiation angle calculation control unit controls an irradiation angle so that irradiation light falls on a desired range toward an irradiation target located on a floor surface regardless of the irradiation direction of a spotlight. 3. The irradiation angle control device according to claim 1, wherein: 4. An illumination angle calculation control unit, wherein regardless of an illumination direction of a spotlight, a first predetermined height and a second predetermined height lower than the first predetermined height. 4. The irradiation angle control device according to claim 3, wherein the irradiation angle is controlled so that the irradiation light falls on a certain height range. 5. The irradiation angle calculation control unit controls the irradiation angle so that the diameter of the irradiation spot projected on the irradiation target is kept substantially constant regardless of the irradiation direction of the spotlight. The irradiation angle control device according to claim 1.