JP2012059515A - Remote controller and projector set - Google Patents

Abstract

PROBLEM TO BE SOLVED: To provide a remote controller and a projector set capable of making a color of the light to be projected constant.SOLUTION: A projector set 100 is provided with a projector and a remote controller 13 which remote-controls the projector. The projector is a device which can project a full color light which uses an LED as a light source and is provided with a casing 14 and a light projection part installed in the casing 14. The remote controller 13 is provided with the casing 14, an imaging element 131 installed in the casing 14, an image processing part, an analysis part, a control part, a storage part, and a transmission part 136. An operation part 15 which performs each operation is provided on a top face of the casing 14. The remoter controller 13 detects a color of the light projected from the projector and creates correction data for correcting a driving signal of the corresponding LED based on the detected color so that the color of the light projected from the projector comes within a targeted range.

Description

  The present invention relates to a remote control device and a projector set.

  A projector using an LED (Light Emitting Diode) as a light source is known (see, for example, Patent Document 1). LEDs have many advantages such as low power consumption, brightness and long life.

  However, LEDs have variations in emission color and intensity of emitted light, and LEDs have the disadvantage that the emission color and intensity of emitted light change over time.

  That is, the LED changes its emission color and the intensity of emitted light due to temperature changes. For example, when the projector is turned on and starts projecting, the temperature of the LED rises, causing the emission color to lighten. Or the intensity of the emitted light decreases. As a result, in a projector using an LED as a light source, when a predetermined time elapses from when the projection is started, it is impossible to project light of an initial (original) color. In addition, the color of light in this specification is a concept including the color of light (color in a narrow sense) and the intensity of light.

  In addition, since the LEDs have variations in emission color and emitted light intensity, even if the same setting is made for a plurality of projectors, variations in the color of the light to be projected will occur between the projectors.

JP 2009-238734 A

  An object of the present invention is to provide a remote control device and a projector set that can make the color of light to be projected constant.

Such an object is achieved by the present inventions (1) to (18) below.
(1) A remote control device for remotely operating a projector including a light projecting unit having an LED and a drive unit that sends a drive signal to the LED and causes the LED to emit light,
A color detection means for detecting the color of the light projected from the projector;
Correction for creating correction data for correcting the driving signal of the LED based on the color detected by the color detection means so that the color of the light projected from the projector falls within a target range. Data creation means;
A remote control device comprising: transmission means for transmitting the correction data to the projector.

(2) The light projecting unit includes a plurality of the LEDs that emit light of the same color,
The remote controller according to (1), wherein the correction data is for increasing or decreasing the magnitude of the drive signal.

(3) The light projecting unit includes a plurality of the LEDs that emit light of different colors, and is configured to project light of a plurality of colors.
The remote control device according to (1), wherein the correction data specifies the LED for which the drive signal is corrected, and increases or decreases the magnitude of the drive signal of the specified LED.

  (4) The remote control according to (3), wherein the color detection means is for specifying the intensity of the red component, the intensity of the green component, and the intensity of the blue component of the light projected from the projector. apparatus.

  (5) The correction data creating means includes the purpose of the intensity of the red component, the intensity of the green component, the intensity of the blue component, and the intensity of the red component of the light projected from the projector specified by the color detection means And the target range of the intensity of the green component and the target range of the intensity of the blue component, respectively, the intensity of the red component, the intensity of the green component and the intensity of the blue component of the light projected from the projector The correction data is generated so as to be within the target range of the intensity of the red component, within the target range of the intensity of the green component, and within the target range of the intensity of the blue component, respectively ( The remote control device according to 4).

  (6) The remote control device includes any of the above (3) to (5) including an operation unit that can select a predetermined color from the plurality of colors as the color of light projected from the projector. A remote control device according to claim 1.

  (7) The remote control device according to any one of (1) to (6), wherein the color detection means includes a light detection sensor that detects an intensity of light projected from the projector.

  (8) The remote control device according to (7), wherein the light detection sensor is an image sensor that forms an electronic image.

(9) A projector set comprising the remote control device according to any one of (1) to (8) above and a projector that is remotely operated by the remote control device,
The projector includes a light projecting unit having an LED, a drive unit that sends a drive signal to the LED and causes the LED to emit light, and a receiving unit that receives correction data transmitted from the projector.
The remote control device transmits the correction data to the projector;
The projector set is configured to receive the correction data and correct the drive signal using the correction data.

(10) A projector including a light projecting unit having an LED, a drive unit that sends a drive signal to the LED and causes the LED to emit light, and a receiving unit that receives the signal;
A projector set comprising a transmission means for transmitting a signal, and a remote control device for remotely operating the projector;
The remote control device has color detection means for detecting the color of light projected from the projector, and transmits color data indicating the color detected by the color detection means to the projector. And
Based on the color detected by the color detection means, the projector corrects the LED driving signal so that the color of the light projected from the projector falls within a target range. Correction data generation means for generating the correction data, receiving the color data, generating the correction data based on the color data, and correcting the drive signal using the correction data. A projector set characterized by

(11) The light projecting unit includes a plurality of the LEDs that emit light of the same color,
The projector set according to (10), wherein the correction data increases or decreases the magnitude of the drive signal.

(12) The light projecting unit includes a plurality of the LEDs that emit light of different colors, and is configured to project light of a plurality of colors.
The projector set according to (10), wherein the correction data specifies the LED whose drive signal is corrected, and increases or decreases the size of the drive signal of the specified LED.

  (13) The projector according to (12), wherein the color detection means specifies the intensity of the red component, the intensity of the green component, and the intensity of the blue component of the light projected from the projector. set.

  (14) The correction data creation means includes the purpose of the intensity of the red component, the intensity of the green component, the intensity of the blue component, and the intensity of the red component of the light projected from the projector specified by the color detection means And the target range of the intensity of the green component and the target range of the intensity of the blue component, respectively, the intensity of the red component, the intensity of the green component and the intensity of the blue component of the light projected from the projector The correction data is generated so as to be within the target range of the intensity of the red component, within the target range of the intensity of the green component, and within the target range of the intensity of the blue component, respectively ( The projector set according to 13).

  (15) The remote control device includes an operation unit that can select a predetermined color from the plurality of colors as the color of light projected from the projector. Floodlight set according to crab.

  (16) The projector set according to any one of (10) to (15), wherein the color detection means includes a light detection sensor that detects an intensity of light projected from the projector.

  (17) The light projector set according to (16), wherein the light detection sensor is an image sensor that forms an electronic image.

(18) having a distance detection means for detecting a distance between the remote control device and the projector;
The projector set according to any one of (9) to (17), configured to generate the correction data in consideration of a detection result of the distance detection unit.

  According to the present invention, the driving signal of the LED can be corrected so that the color of the light to be projected is within the target range, and the color of the light to be projected can be made constant.

That is, even if the emission color of the LED or the intensity of the emitted light changes, the color of the projected light can be made constant by correcting the LED drive signal.
In addition, it is possible to prevent variations in the color of the light projected between the plurality of projectors.

  In addition, since the remote control device has the color detection means, the optical path length until the light emitted from the light projecting unit is received is required compared with the case where the color detection means is provided in the projector. This makes it possible to make the length sufficiently long. Thus, when the light projecting unit has a plurality of LEDs that emit light of different colors, the color of the light to be projected can be accurately detected, and the correction data can be reliably obtained. Can be created.

It is a perspective view which shows the projector in 1st Embodiment of the projector set of this invention. It is a perspective view which shows the remote control apparatus in 1st Embodiment of the projector set of this invention. It is a block diagram of the light projector shown in FIG. It is a block diagram of the remote control device shown in FIG. It is a flowchart which shows the control operation of the light projector shown in FIG. 3 is a flowchart showing a control operation of the remote control device shown in FIG.

  Hereinafter, a remote control device and a projector set according to the present invention will be described in detail based on preferred embodiments shown in the accompanying drawings.

  In the present invention, the communication method between the projector and the remote control device that remotely controls the projector is not particularly limited, and may be either wireless communication (wireless communication method) or wired communication (wired communication method). However, in the following embodiment, a case where infrared communication among wireless communication is typically employed will be described.

<First Embodiment>
FIG. 1 is a perspective view showing a projector in the first embodiment of the projector set of the present invention, FIG. 2 is a perspective view showing a remote control device in the first embodiment of the projector set of the present invention, and FIG. 4 is a block diagram of the remote control device shown in FIG. 2, FIG. 5 is a flowchart showing the control operation of the projector shown in FIG. 1, and FIG. 6 is a control operation of the remote control device shown in FIG. It is a flowchart to show.

  In the following description, the left side in FIG. 1 is referred to as “front (tip)” and the right side is referred to as “back (base)”.

  As shown in these drawings, the projector set 100 includes a projector 1 and a remote control device 13 for remotely operating the projector 1 by wireless communication.

  As shown in FIGS. 1 and 3, the projector 1 is a device that can project full-color light using an LED (Light Emitting Diode) as a light source, and is installed in the casing 2 and the casing 2. The light projecting unit 3 is provided.

  The casing 2 is provided at a bottomed cylindrical (bottomed cylindrical shape in the illustrated configuration) main body 21 and a front end of the main body 21, and also serves as a lid that closes the opening of the front end of the main body 21. And a window portion 22. The window portion 22 is made of a transparent (light transmissive) member.

  The light projecting unit 3 includes a plurality (six in the illustrated configuration) of LED chips (first LED chips) 31a, a plurality of (three in the illustrated configuration) LED chips (second LED chips) 31b, And a substrate 32 that supports the LED chips 31a and 31b. Each LED chip 31a, 31b is installed on the front side (front end side) of the substrate 32, that is, on the side where light is projected (irradiated). The substrate 32 is fixed to the inside of the front end portion of the main body portion.

  The LED chip 31a includes an LED that emits red (R) light (red wavelength band light), an LED that emits green (G) light (green wavelength band light), and a blue (B) light (blue light). An LED that emits light in a wavelength band and an LED that emits white (W) light. In addition, the number of LEDs emitting red light, LEDs emitting green light, LEDs emitting blue light, and LEDs emitting white light in the LED chip 31a may be one or more, respectively.

  The LED chip 31b has an LED that emits amber (A) light. As described above, the light projecting unit 3 has a number of LEDs that emit light of different colors. Note that the number of LEDs emitting amber light in the LED chip 31b may be one or more.

  By adjusting the output of each LED of each LED chip 31a, 31b, full color light, that is, light of any color can be projected. As described above, the color of light in this specification is a concept including the color of light (color in a narrow sense) and the intensity of light.

  Moreover, each LED chip 31a is arrange | positioned at equal angular intervals (equal intervals) along the circumferential direction, and each LED chip 31b is equiangular intervals along the circumferential direction on the inner peripheral side of the LED chip 31a. Has been placed. Needless to say, the arrangement of the LED chip 31a and the LED chip 31b is not limited to this.

  Hereinafter, the LED chip 31a and the LED chip 31b are collectively referred to as “LED chip 31”, and the term “LED chip 31a” and “LED chip 31b” are used when distinguished from each other.

  The light emitted from the LEDs of the LED chips 31a and 31b is also simply referred to as “light emitted from the LED”.

  Further, the projector 1 sends a drive signal to the LED and causes the LED to emit (drive) the LED, a receiver (receiver) 5 that receives a signal transmitted from the remote control device 13, and a controller (control). Means) 7 and a storage unit 4 for storing each piece of information (data).

  The control unit 7 corrects the drive signal based on correction data, which will be described later, and controls the overall operation of the projector 1, such as the reception unit 5, the drive unit 6, and the storage unit 4. As this control part 7, a microcomputer etc. can be used, for example.

  As shown in FIGS. 2 and 4, the remote control device 13 includes a casing 14, an image sensor (light detection element) 131 installed in the casing 14, an image processing unit 132, an analysis unit 133, and a control unit (control means). 134, a storage unit 135 that stores each piece of information (data), and a transmission unit (transmission unit) 136 that transmits a signal to the projector 1. Further, on the upper surface of the casing 14, an operation unit (operation means) 15 for performing each operation is provided. In this embodiment, infrared communication is employed as a communication method, and a signal is transmitted from the transmission unit 136 to the projector 1 by infrared rays, and the projector 1 is remotely operated.

  The operation unit 15 includes a plurality of operation dials 151 and a plurality of operation buttons 152, 153, 154, and 155.

  Each operation button 152 is a means for selecting the color of light to be projected. In the configuration shown in the figure, 29 operation buttons 152 are provided, and an arbitrary color can be selected from 25 types of color colors and 4 types of white colors. Each operation button 152 is colored in the same color as the color of the light to be projected.

  Each operation dial 151 is a means for adjusting the hue, brightness, and saturation of the light to be projected. When each operation dial 151 is rotated, the hue, brightness, and saturation are changed.

  Each operation button 153 is a means for registering the color of the light to be projected, and selecting the registered color as the color of the light to be projected.

Each operation button 154 includes an output of an LED emitting red light, an output of an LED emitting green light, an output of an LED emitting blue light, an output of an LED emitting white light, and an LED emitting an amber light. It is a means for adjusting each output. When one end or the other end of each operation button 154 is pressed, an LED that emits red light, an LED that emits green light, an LED that emits blue light, an LED that emits white light, or an LED that emits amber light Each output is changed.
The operation button 155 is means for operating lighting / extinguishing of the projector 1.

  Further, on the upper left side of the casing in FIG. 2, an image sensor (solid-state image sensor) 131 that forms an electronic image is used as a light detection sensor that detects the intensity of light projected from the light projecting unit 3 of the projector 1. is set up.

  As the image sensor 131, for example, a CCD image sensor, a CMOS sensor, or the like in which primary color filters having respective color elements (colored portions) of red (R), green (G), and blue (B) are provided on the imaging surface. Can be used.

  The image sensor 131 detects the intensity (level) of the red component, the intensity of the green component, and the intensity of the blue component of the light projected from the light projecting unit 3, that is, the light emitted from each LED. can do.

  The control unit 134 controls the overall operation of the projector 1 such as the image sensor 131, the image processing unit 132, the analysis unit 133, the storage unit 135, and the transmission unit 136, in addition to the generation of correction data described later. For example, a microcomputer or the like can be used as the control unit 134.

  In the projector set 100, the color of the light projected from the light projecting unit 3 of the projector 1 is detected, and the color of the projected light falls within the target range based on the detected color. Thus, the drive signal of the corresponding LED is corrected.

  That is, first, the image sensor 131 images the light projected from the projector 1, and the image processing unit 132 creates image data. This image data indicates the intensity of the red component, the intensity of the green component, and the intensity of the blue component for each pixel of the image sensor 131.

  Next, the analysis unit 133 specifies the intensity of the red component, the intensity of the green component, and the intensity of the blue component of the projected light based on the image data. In this case, since the intensity of the red component, the intensity of the green component, and the intensity of the blue component of the projected light are obtained for each pixel of the image sensor 131, for example, for each color component, for example, An average value is obtained, and the average value is set as the intensity of the red component, the intensity of the green component, and the intensity of the blue component of the projected light.

  Next, the control unit 134 controls the intensity of the red component, the intensity of the green component and the intensity of the blue component, the target range of the intensity of the red component, and the target range of the intensity of the green component. The range and the target range of the intensity of the blue component are respectively compared. Then, the intensity of the red component, the intensity of the green component, and the intensity of the blue component of the projected light are within the target range of the intensity of the red component, within the target range of the intensity of the green component, and the intensity of the blue component, respectively. The correction data for correcting the LED drive signal is created so as to be within the target range.

  The correction data specifies an LED whose drive signal is corrected, and increases or decreases the magnitude of the drive signal of the specified LED.

  In this case, the intensity of the color components of the projected light (red component, green component, blue component) specified by the analysis unit 133 in advance, the target range of the color components of the projected light, and the LED A calibration curve such as a table or an arithmetic expression indicating a relationship with data used when the magnitude of the drive signal is increased or decreased is experimentally created and stored in the storage unit 135 described later. For example, the calibration curve is prepared for a red component, a green component, and a blue component, respectively. Then, when creating the correction data, the control unit 134 reads the calibration curve from the storage unit 135 and uses the calibration curve to determine the intensity of the color component of the projected light identified by the analysis unit 133. Then, based on the target range of the color component of the projected light, data used to increase or decrease the magnitude of the LED drive signal in the correction data is obtained (created).

  Note that the target ranges of the intensity of the red component, the green component, and the blue component correspond to the setting values (setting colors) of the light to be projected, and are determined for each color.

  As described above, in the projector 1, the color of the light to be projected can be freely set by operating the operation unit 15, and the light to be projected by operating the operation button 152 of the operation unit 15. When a predetermined color is input as the color of the image, the control unit 134 includes data indicating the color of the light to be projected and a command (command) for setting the color of the light to be projected. Is transmitted from the transmitter 136 to the projector 1.

  In the projector 1, the command transmitted from the remote control device 13 is received by the receiving unit 5, and the control unit 7 sets the color of light to be projected according to the command. That is, the control unit 7 sets an initial value of the magnitude of the drive signal sent to the LED when light is projected according to the set color. Then, when projecting light, the drive unit 6 sends a drive signal of the set size to the LED, causing the LED to emit light.

  The LED driving method is not particularly limited. For example, a pulse (pulse signal) is used as a driving signal, and a PWM method for adjusting the value of the current input (supplied) to the LED by changing the duty ratio of the pulse is used. adopt.

  The image sensor 131, the image processing unit 132, and the analysis unit 133 constitute a main part of the color detection means that detects the color of the projected light.

  The control unit 134 constitutes a main part of correction data creating means for creating correction data for correcting the LED driving signal.

Next, the operation of the projector set 100 will be described.
As described above, in the projector set 100, the operation unit 15 of the remote control device 13 can be operated to freely set the color of light projected from the projector unit 3 of the projector 1. Yes. Here, a case where the operation button 152 is operated to select (set) the color of light projected from the projector 1 will be described here. Further, after the operation, the remote control device 13 is disposed at a position where the light projected from the projector 1 is irradiated onto the image sensor 131 and the distance from the projector 1 becomes a predetermined value (predetermined value). The

First, the operation of the remote control device 13 will be described.
As shown in FIG. 6, in the remote control device 13, the control unit 134 determines whether the operation unit 15 is operated and the color of light projected from the projector 1 is selected (step S <b> 201).

  If it is determined that the color of the light to be projected has been selected, a command for setting (changing) the color of the light to be projected is transmitted to the projector 1 including data indicating the selected color ( Step S202).

  As will be described later, the projector 1 receives the command transmitted from the remote control device 13, and the control unit 7 sets the color of light to be projected according to the command, and projects the light of that color. To do.

  Next, in the remote control device 13, the image sensor 131 images the light projected from the projector 1, and the image processing unit 132 creates image data (step S203).

  Next, the analysis unit 133 specifies the intensity of the red component, the intensity of the green component, and the intensity of the blue component of the light projected from the light projecting unit 3 based on the image data (step S204).

  Next, the control unit 134 determines the intensity of the red component, the intensity of the green component and the intensity of the blue component, the target range of the intensity of the red component, the target range of the intensity of the green component, and the blue color specified in step S204. Each component intensity is compared with a target range (step S205).

  Next, the control unit 134 determines that the intensity of the red component, the intensity of the green component, and the intensity of the blue component specified in step S204 are within the target range of the intensity of the red component and the target of the intensity of the green component, respectively. It is determined whether it is within the range and the target range of the intensity of the blue component (step S206).

  If it is determined in step S206 that one of the intensity of the red component, the intensity of the green component, and the intensity of the blue component of the light projected from the light projecting unit 3 is not within the target range, The process proceeds to S207.

  In step S207, the control unit 134 determines that the intensity of the red component, the green component, and the blue component of the light projected from the light projecting unit 3 is not within the target range. Correction data for correcting the drive signal of the LED is generated so as to be inside, and a command for correcting the drive signal including the correction data is transmitted to the projector 1 by the transmission unit 136.

  As a specific example, for example, when only the intensity of the red component is not within the target range, correction data for increasing or decreasing the drive signal is created only for the LED emitting red light. The correction data is created using the calibration curve stored in the storage unit 135 as described above.

  As will be described later, the projector 1 receives the command transmitted from the remote control device 13, and the control unit 7 corrects the corresponding LED drive signal with the correction data in accordance with the command. As a result, the intensity of the red component, the intensity of the green component, and the intensity of the blue component of the projected light that is not within the target range falls within the target range (even if it does not enter at one time, whatever Step S207 (entered by executing Step S105 described later). Thereby, the light of the set color is always projected.

  Next, the remote control device 13 returns to step S203 and executes step S203 and subsequent steps again.

  On the other hand, if it is determined in step S206 that the intensity of the red component, the intensity of the green component, and the intensity of the blue component of the light projected from the light projecting unit 3 are all within the target range, a timer (not shown) is reset. Then, measurement of time is started (step S208), and when measurement of the set time is completed (“Yes” in step S209), the process returns to step S202, and step S202 and subsequent steps are executed again.

  The set time of the timer is not particularly limited, but is set by dividing it into a first period from the start of light projection to time t and a second period from time t to end of light projection. It is preferable to do.

  The first period is a period in which the emission color of the LED and the intensity of the emitted light are relatively large and change (decrease) with time. In the first period, the timer setting time is set to be relatively short. Is preferred. In addition, the second period is a period in which the emission color of the LED and the intensity of emitted light are relatively small and change (decrease) with time or hardly change. In the second period, the set time of the timer is It is preferable to set a relatively long time.

  Specifically, the time t is preferably set within a range of about 30 minutes to 4 hours, and more preferably set within a range of about 1 to 3 hours.

  In the first period, the timer setting time is preferably set within a range of about 10 seconds to 5 minutes, and more preferably set within a range of about 30 seconds to 2 minutes.

  In the second period, the timer setting time is preferably set within a range of about 15 minutes to 3 hours, and more preferably set within a range of about 30 minutes to 2 hours.

  In step S209, if the measurement of the set time does not end (“No” in step S209), it is determined whether the operation unit 15 has been operated and the color of the light to be projected has been selected. If the color of the light to be projected is selected before the measurement of the set time is completed, the process returns to step S202, and step S202 and subsequent steps are executed again.

Next, the operation of the projector 1 will be described.
The receiving unit 5 of the projector 1 is always in a state of waiting for reception of a signal (command) transmitted from the remote control device 13.

  There are roughly two types of commands, one is a command for setting the color of light to be projected, and the other is a command for correcting a drive signal.

  As shown in FIG. 5, in the projector 1, when the control unit 134 receives a command transmitted from the remote control device 13 (“Yes” in step S <b> 101), the color of light emitted from the projector 1 is transmitted by the command. If it is a command to set only the color (“Yes” in step S102), the color of the light to be projected is set (changed) to the color based on the received data indicating the color (step). S103).

  If the command is a command for correction (“Yes” in step S104), the corresponding LED drive signal is corrected with the correction data (step S105).

  After step S105, the process returns to step S101, and step S101 and subsequent steps are executed again.

  As described above, according to the projector set 100, the LED that emits red light, the LED that emits green light, the LED that emits blue light, and the white light are emitted from each LED chip 31a of the light projecting unit 3. From the LED, the LED emitting light of each LED chip 31b, even if the emission color of any LED or the intensity of the emitted light changes, the corresponding LED drive signal is corrected. The color of the light to be projected can be changed to a target color (a constant color).

  In addition, it is possible to prevent variations in the color of the light projected between the plurality of projectors 1.

  Further, when the remote control device 13 includes the image pickup element 131 and the remote control device 13 detects the color of light projected from the light projecting unit 3 of the projector 1, the projector 1 detects the color of light. Compared to the above, it is possible to make the required optical path length until the light emitted from the light projecting unit 3 is received sufficiently long. It can be detected accurately and correction data can be generated reliably.

Second Embodiment
Hereinafter, the second embodiment will be described with a focus on the differences from the first embodiment described above, and the description of the same matters will be omitted.

  The projector set 100 according to the second embodiment is configured to create correction data by the control unit 7 of the projector 1. That is, the control unit 7 constitutes a main part of the correction data creating means.

  In the projector set 100, color data indicating the detected color is transmitted from the transmission unit 136 of the remote control device 13 to the projector 1.

Then, the projector 1 receives the color data by the receiving unit 5, and the control unit 7 creates correction data based on the color data. Since the operation when creating the correction data is the same as that of the first embodiment described above, description thereof is omitted. Note that a calibration curve used when creating correction data is stored in the storage unit 4.
According to the projector set 100, the same effects as those of the first embodiment described above can be obtained.

<Third Embodiment>
Hereinafter, the third embodiment will be described with a focus on differences from the first embodiment described above, and descriptions of the same matters will be omitted.

  The projector set 100 of the third embodiment has distance detection means for detecting the distance between the remote control device 13 and the projector 1 and creates correction data in consideration of the detection result (distance data) of the distance detection means. Except that it is different, it is the same as the first embodiment.

  That is, in the projector set 100 of the third embodiment, the remote controller 13 first detects the color of the light projected from the projector 1 and creates correction data, first, between the remote controller 13 and the projector 1. Detect the distance. When detecting the distance between the remote control device 13 and the projector 1, the remote control device 13 images the projector 1 with the imaging element 131 and creates image data with the image processing unit 132. Then, the control unit 134 recognizes (identifies) the projector 1 based on the image data, specifies the size of the projector 1, and determines the distance between the remote control device 13 and the projector 1 based on the size. Is identified (detected).

  Note that a calibration curve such as a table or an arithmetic expression indicating the relationship between the size of the projector 1 and the distance between the remote control device 13 and the projector 1 is obtained experimentally in advance and stored in the storage unit 135.

  When the remote control device 13 creates correction data, the distance (distance data) between the detected remote control device 13 and the projector 1 and the intensity of the red component of the specified projected light, Correction data is created based on the intensity of the green component and the intensity of the blue component. The reason why the distance data is taken into account is that if the distance between the remote control device 13 and the projector 1 is different, the intensity of each color component of the light detected by the image sensor 131 is different. This is for correction.

The image sensor 131, the image processing unit 132, and the control unit 134 constitute a main part of the distance detection unit.
According to the projector set 100, the same effects as those of the first embodiment described above can be obtained.

  In the projector set 100, the distance between the remote control device 13 and the projector 1 is detected, and correction data is created in consideration of the detected value. Therefore, the remote control device 13 uses the light projected from the projector 1 Can be arranged at any position as long as the image sensor 131 irradiates the image sensor 131, and the correction data can be generated reliably.

  In the present embodiment, the detected distance (distance data) between the remote control device 13 and the projector 1, the intensity of the red component, the intensity of the green component, and the intensity of the blue component of the specified projected light. Although it is configured to create correction data based on (color data), the present invention is not limited to this, and for example, a projector based on distance data and image data created by the image processing unit 132 The intensity of each color component of the projected light at a position a predetermined distance from 1 may be specified, and correction data may be created based on the specified intensity of each color component.

The third embodiment can be applied to the second embodiment.
Further, the distance detecting means may be provided in the projector 1.

  The remote control device and the projector set according to the present invention have been described based on the illustrated embodiment. However, the present invention is not limited to this, and the configuration of each unit is of an arbitrary configuration having the same function. Can be substituted. In addition, any other component may be added to the present invention.

  In the embodiment, the image sensor is used as the light detection sensor. However, the present invention is not limited to this. For example, a combination of a photodiode and a color filter may be used.

  Moreover, in the said embodiment, although the light projector is comprised so that full color light can be projected, it is not limited to this in this invention, For example, a light projection part emits the light of the same color. It may have a plurality of LEDs and be configured to project monochromatic light. The correction data in this case is data for increasing or decreasing the magnitude of the LED drive signal.

  Moreover, in the said embodiment, when the color of the light to project changes while using the projector, it is configured to prevent it, but the application of the present invention is not limited to this, for example, You may comprise so that it may be used for calibration of the color of the light which projects in a projector. This calibration can be performed when shipping from a factory, for example. Thereby, the initial setting of the projector can be surely performed, and variation in the color of the light to be projected can be prevented among the plurality of projectors.

  Further, the method for detecting the distance between the remote control device and the projector is not limited to the method of the above embodiment, and for example, an external light triangle method used in the field of cameras or the like can be used. Furthermore, the method is not limited to the optical detection method, and for example, a method using ultrasonic waves or the like may be employed.

DESCRIPTION OF SYMBOLS 1 Light projector 2 Casing 21 Main body part 22 Window part 3 Light projection part 31, 31a, 31b LED chip 32 Board | substrate 4 Memory | storage part 5 Reception part 6 Drive part 7 Control part 13 Remote control device 131 Image sensor 132 Image processing part 133 Analysis part 134 Control Part 135 Storage part 136 Transmission part 14 Casing 15 Operation part 151 Operation dial 152-155 Operation button 100 Floodlight set S101-S105 Step S201-S210 Step

Claims (18)

A remote control device for remotely operating a projector including a light projecting unit having an LED and a drive unit that sends a drive signal to the LED and causes the LED to emit light,
A color detection means for detecting the color of the light projected from the projector;
Correction for creating correction data for correcting the driving signal of the LED based on the color detected by the color detection means so that the color of the light projected from the projector falls within a target range. Data creation means;
A remote control device comprising: transmission means for transmitting the correction data to the projector. The light projecting unit includes a plurality of the LEDs that emit light of the same color,
The remote controller according to claim 1, wherein the correction data increases or decreases the magnitude of the drive signal. The light projecting unit has a plurality of the LEDs that emit light of different colors, and is configured to project light of a plurality of colors.
2. The remote control device according to claim 1, wherein the correction data specifies the LED for which the drive signal is corrected, and increases or decreases the magnitude of the drive signal of the specified LED.   The remote control device according to claim 3, wherein the color detection means specifies the intensity of the red component, the intensity of the green component, and the intensity of the blue component of the light projected from the projector.   The correction data creating means includes a target range of red component intensity, green component intensity, blue component intensity, and red component intensity of light projected from the projector specified by the color detection means, Comparing the target range of the intensity of the green component and the target range of the intensity of the blue component, respectively, the intensity of the red component, the intensity of the green component, and the intensity of the blue component of the light projected from the projector, 5. The correction data is configured to create the correction data so as to be within a target range of the intensity of the red component, within a target range of the intensity of the green component, and within a target range of the intensity of the blue component. Remote control device.   6. The remote control device according to claim 3, further comprising an operation unit capable of selecting a predetermined color from the plurality of colors as the color of light projected from the projector. .   The remote control device according to any one of claims 1 to 6, wherein the color detection means includes a light detection sensor that detects an intensity of light projected from the projector.   The remote controller according to claim 7, wherein the light detection sensor is an image sensor that forms an electronic image. A projector set comprising the remote control device according to claim 1 and a projector remotely operated by the remote control device,
The projector includes a light projecting unit having an LED, a drive unit that sends a drive signal to the LED and causes the LED to emit light, and a receiving unit that receives correction data transmitted from the projector.
The remote control device transmits the correction data to the projector;
The projector set is configured to receive the correction data and correct the drive signal using the correction data. A light projector including an LED, a drive unit that sends a drive signal to the LED and causes the LED to emit light, and a receiving unit that receives the signal;
A projector set comprising a transmission means for transmitting a signal, and a remote control device for remotely operating the projector;
The remote control device has color detection means for detecting the color of light projected from the projector, and transmits color data indicating the color detected by the color detection means to the projector. And
Based on the color detected by the color detection means, the projector corrects the LED driving signal so that the color of the light projected from the projector falls within a target range. Correction data generation means for generating the correction data, receiving the color data, generating the correction data based on the color data, and correcting the drive signal using the correction data. A projector set characterized by The light projecting unit includes a plurality of the LEDs that emit light of the same color,
The projector set according to claim 10, wherein the correction data increases or decreases the magnitude of the drive signal. The light projecting unit has a plurality of the LEDs that emit light of different colors, and is configured to project light of a plurality of colors.
The projector set according to claim 10, wherein the correction data specifies the LED for which the drive signal is corrected, and increases or decreases the magnitude of the drive signal of the specified LED.   The projector set according to claim 12, wherein the color detection means specifies intensity of a red component, intensity of a green component, and intensity of a blue component of light projected from the projector.   The correction data creating means includes a target range of red component intensity, green component intensity, blue component intensity, and red component intensity of light projected from the projector specified by the color detection means, Comparing the target range of the intensity of the green component and the target range of the intensity of the blue component, respectively, the intensity of the red component, the intensity of the green component, and the intensity of the blue component of the light projected from the projector, The correction data is configured to be generated so as to be within a target range of the intensity of the red component, within a target range of the intensity of the green component, and within a target range of the intensity of the blue component. Floodlight set.   The projector set according to any one of claims 12 to 14, wherein the remote control device includes an operation unit capable of selecting a predetermined color from the plurality of colors as a color of light projected from the projector. .   The projector set according to any one of claims 10 to 15, wherein the color detection means includes a light detection sensor that detects an intensity of light projected from the projector.   The projector set according to claim 16, wherein the light detection sensor is an image sensor that forms an electronic image. A distance detecting means for detecting a distance between the remote control device and the projector;
The projector set according to any one of claims 9 to 17, wherein the correction data is created in consideration of a detection result of the distance detection means.

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