JP2010086928A - Illuminating device - Google Patents

Abstract

<P>PROBLEM TO BE SOLVED: To provide an illuminating device in which irradiation light can be projected against an irradiated object by a simple preliminary work. <P>SOLUTION: The illuminating device in which the projection light is projected against the irradiated object of an optional shape is equipped with a projector 2 that projects projection light including a first irradiation light irradiated so as to cover the irradiated object 10 and a second irradiation light irradiated against other than the irradiated object, a means to measure a distance between the projector 2 and the irradiated object 10 by the work of a user, and a horizontal rotation detecting part 21 and a vertical rotation detecting part 22 which measure angles θ1, θ2 made by the optical axial direction of the projection light projected by the projector 2 by the work of the user and a straight line connecting the projector 2 and the irradiated object 10. The distance measured and the angles measured by the horizontal rotation detecting part 21 and the vertical rotation detecting part 22 are used to control the projection light projected by the projector 2. <P>COPYRIGHT: (C)2010,JPO&INPIT

Description

  The present invention relates to an illumination device that projects illumination light onto an object to be irradiated having an arbitrary shape.

  Conventionally, as an illuminating device that emits illumination light of an arbitrary shape, a filter called a gobo or a mask is installed in a projection device, and a projection unit that emits illumination light from the projection device is shielded. Thereby, the illumination light which passed the filter will be in the state cut out in the specific shape. Specifically, in a conventional illumination system, a filter (gobo etc.) cut out in a base shape composed of circles, triangles, squares, etc. is attached to a projection device to shape the contour of illumination light.

  In addition, in a conventional illumination system, if you want to irradiate only the object to be irradiated, adjust the projection position of the illumination light emitted from the projection device to the position of the object to be irradiated, and then roughly use the aperture function and zoom function of the projection device. The operation of matching the contour of the illumination light with the shape of the irradiated object is performed.

  Further, conventionally, there is an illumination system that performs a space effect by using a projector, which is a projection device, instead of a lighting fixture (light). The lighting fixture used for this lighting system is also called a moving projector. This moving projector emits image light as illumination light. For this reason, the shape and color of irradiation light can be freely set and changed as a moving image.

  However, even with this lighting system, when shaping the illumination light, a method is used that roughly matches the contour of the illumination light to the shape of the object to be irradiated, using the base shape, as with conventional illumination systems. Has been.

Further, conventionally, a technique described in Patent Document 1 below is known as a stereoscopic display device that can effectively express the surface texture of an object in a stereoscopic model.
http://www.egghouse.com/gobo/about.htm http://www.ushiolighting.co.jp/product/productimage/pdf/dl2.pdf JP 2006-338181 A

  However, in the conventional illumination system described above, since the shape filter, aperture, and zoom prepared in advance are used, it is only possible to roughly match the shape of the illumination light to the irradiated object. Further, in the conventional illumination system, when it is desired to change the position or posture of the irradiated object, it is necessary to newly create a shape filter or the like, and it is not possible to easily change the effect of the irradiated object.

  Therefore, the present invention has been proposed in view of the above-described circumstances, and an object of the present invention is to provide an illuminating device that can project irradiation light onto an object to be irradiated by simple preliminary work.

  The present invention is an illumination device that projects projection light toward an irradiated object having an arbitrary shape, and in order to solve the above-described problem, the first irradiation light and the irradiated light that are irradiated so as to cover the irradiated object Measured by a projection means for projecting projection light including second irradiation light emitted other than the object, a distance measurement means for measuring the distance between the projection means and the irradiated object by the user's work, and a distance measurement means Control means for controlling the projection light projected by the projection means using the distance.

  The present invention is an illumination device that projects projection light toward an object to be irradiated having an arbitrary shape, and includes first irradiation light that is irradiated so as to cover the object to be irradiated and second irradiation that is irradiated to other than the irradiation object. Angle measurement that measures an angle formed by a projection unit that projects projection light including light, an optical axis direction of the projection light projected from the projection unit by a user's work, and a straight line connecting the projection unit and the irradiated object Means and control means for controlling the projection light projected by the projection means using the angle measured by the angle measurement means.

  The present invention is an illumination device that projects projection light toward an object to be irradiated having an arbitrary shape, and includes first irradiation light that is irradiated so as to cover the object to be irradiated and second irradiation that is irradiated to other than the irradiation object. Projection means for projecting projection light including light, distance measurement means for measuring the distance between the projection means and the irradiated object by the user's work, and the optical axis direction of the projection light projected from the projection means by the user's work And the angle measuring means for measuring the angle formed by the straight line connecting the projection means and the irradiated object, and the distance measured by the distance measuring means and the angle measured by the angle measuring means are projected by the projecting means. Control means for controlling the projection light.

  According to the present invention, since the distance measuring unit that measures the distance between the projecting unit and the object to be irradiated is provided, the irradiation light can be projected onto the object to be irradiated by a simple prior work for measuring the distance.

  According to the present invention, since the angle measuring means for measuring the angle formed by the optical axis direction of the projection light projected from the projecting means and the straight line connecting the projecting means and the irradiated object is provided, the angle is measured. Irradiation light can be projected onto the object to be irradiated by a simple prior work.

  According to the present invention, the distance between the projection unit and the irradiated object is measured, and the angle formed by the optical axis direction of the projection light projected from the projection unit and the straight line connecting the projection unit and the irradiated object is measured. Irradiation light can be projected onto the object to be irradiated by a simple prior work.

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

[First Embodiment]
The present invention is applied to, for example, the illumination system according to the first embodiment configured as shown in FIGS. 1 to 3.

  This illumination system includes a light control unit 1, projectors 2A and 2B (hereinafter simply referred to as “projector 2” when collectively referred to) operated by the control of the light control unit 1, and the projectors 2A and 2B. Camera devices 3A and 3B (hereinafter simply referred to as “camera device 3” when collectively referred to) (imaging means) and a personal computer 4 are provided. This illumination system projects illumination light from the projector 2 only to specific irradiated objects 10A and 10B (hereinafter simply referred to as “irradiated object 10” when collectively referred to) only by a simple operation of the user. Is.

In this illumination system, the projector 2A and the camera device 3A are provided close to each other, and the projector 2B and the camera device 3B are provided close to each other. And the shooting range A _C of the projection range A _P and the camera unit 3A of the projector 2A becomes the matches by the positional relationship between the projector 2A and the camera device 3A is adjusted. Similarly, it has become that match the photographing range A _C of the projection range A _P and the camera unit 3B of the projector 2B by the positional relationship between the projector 2B and the camera device 3B is adjusted.

  In this illumination system, the light control unit 1 processes image data output from the projectors 2A and 2B in accordance with distance information measured by projectors 2A and 2B described later. Accordingly, the illumination system projects projection light from the projectors 2A and 2B so as to cover the irradiated objects 10A and 10B with illumination light in accordance with a user operation.

The projectors 2A and 2B are installed in a predetermined space such as a show window space. In this predetermined space, irradiated objects 10A and 10B such as mannequins are installed, and the projectors 2A and 2B project projection light that covers the irradiated objects 10A and 10B with illumination light. The projection ranges _AP of the projectors 2A and 2B are determined by the installation positions and orientations of the projectors 2A and 2B, the angle of view, and the driving angle.

  Projection light data is supplied from the light control unit 1 to the projectors 2A and 2B. This projection light data is used to determine an illumination range and a non-illumination range that are irradiated with illumination light within a predetermined projection range of the projectors 2A and 2B. The projectors 2A and 2B include first irradiation light (illumination light) that is irradiated so as to cover the irradiation objects 10A and 10B that are irradiation objects, and second irradiation light (background light) that is irradiated to other than the irradiation objects. Projecting light including This projection light data is corrected according to the distance information measured by the distance measuring function of each of the projectors 2A and 2B.

  The projector 2 includes a distance measuring unit 20 that measures the distance between the projector 2 and the irradiated object 10 according to the user's work. For example, as shown in FIGS. 3A and 3B, the distance measuring unit 20 is configured by incorporating a mechanism (winding mechanism) capable of winding and pulling the belt-like object 202 in the housing 201. ing. Then, when the object to be irradiated 10 and the projector 2 are installed, the operator pulls out the band-like object 202, and the grounding portion 203 provided at the tip of the band-like object 202 is brought into contact with the light irradiation surface of the object to be irradiated 10. At this time, the distance measuring unit 20 can acquire the amount of the belt-like object 202 drawn from the winding mechanism of the belt-like object 202 as the distance between the projector 2 and the irradiated object 10.

  As a method for acquiring the amount of drawer, the operator reads a scale drawn on the band 202 and outputs distance information from the personal computer 4 to the projection light data generation unit 12 of the light control unit 1 according to the user's operation. It is also good. Further, the pull-out amount of the winding mechanism may be automatically measured by an encoder or the like built in the housing 201 and the distance information may be output to the projection light data generation unit 12 of the light control unit 1. The distance information may be output by automatically reading the scale drawn on the screen.

Camera devices 3A, 3B is for a given predetermined space including the projector 2A, a predetermined projection range A _P being Scenography by the illumination light emitted from 2B and shooting range A _C. The camera devices 3 </ b> A and 3 </ b> B include a photographing unit 31 including a photographing element such as a CCD or an optical component, and a photographed image data output unit 32 that outputs photographed image data photographed by the photographing unit 31 to the light control unit 1. .

  The personal computer 4 includes a display monitor (display means) 41, a keyboard 42 and a mouse 43, which are operation I / Fs, and other CPUs and memories. The display monitor 41 is supplied with captured image data captured by the camera devices 3 </ b> A and 3 </ b> B via the captured image data input unit 11 of the light control unit 1. Thereby, the display monitor 41 can present a show window space that the user intends to produce a space, for example.

  The operation I / Fs 42 and 43 are provided with a mechanism for detecting a user operation, and supply operation signals for setting various projection conditions (video, picture, color, brightness, etc.) to the light control unit 1. The operation I / Fs 42 and 43 may include, for example, a touch panel mechanism built in the display screen of the display monitor 41 and an operation stick that is touch-operated on the touch panel mechanism by the user.

  As shown in FIG. 2, the light control unit 1 includes a captured image data input unit 11, a projection light data generation unit 12, an image storage unit 13, and a projection light drawing unit 14. The light control unit 1 is configured by hardware including an I / F circuit, a CPU, a program memory, a RAM, and the like, but is illustrated as a functional block in FIG. 2 for convenience of explanation.

The captured image data input unit 11 is connected to the camera device 3, and the captured image data is supplied from the captured image data output unit 32 of the camera device 3. Since it is positioned in the projector 2 and the camera unit 3 is such that the shooting range A _C of the projection range A _P and the camera unit 3 of the projector 2 are identical, the captured image data, the projection range A _P of the projector 2 It is a video to represent. This captured image data is supplied to the display monitor 41 of the personal computer 4 by the captured image data input unit 11. As a result, the user is presented the video as seen from the projection range A _P of the projector 2.

The projection light data generation unit 12 is connected to the distance measurement unit 20 of the projector 2 and the operation I / Fs 42 and 43 of the personal computer 4. Projection light data generation unit 12, projector 2 according to the operation signal supplied from the operation I / F42,43 generates the projection light data for projecting the projection range A _P.

  The projection light data generation unit 12 generates projection light data based on various projection light data and operation signals stored in the image storage unit 13, and illumination light of the projection light is irradiated. An illumination light correction unit 122 that performs correction according to the shape of the object 10 and a projection light correction unit 123 that corrects projection light data based on distance information are provided. Here, the image storage unit 13 stores various types of projection light data. This projection light data is also image data for driving the projector 2. Examples of the projection light data include image data including a pattern such as monochromatic light, a pattern, characters, and an image. The projection light data is supplied to the projection light data generation unit 12 by selecting one of the projection light data by the personal computer 4 being operated by the user.

  The projection light generation unit 121 of the projection light data generation unit 12 creates projection light data by combining the illumination light and background light colors, patterns, characters, video, etc. in the projection light in response to an operation signal from the personal computer 4. To do. In the projection light data, for example, when the entire irradiated object 10 is illuminated with a single color, the entire projection range of the illumination light is a monochrome signal. Further, even when the illumination light that is a pattern image or video of multiple colors is used as coating light that coats the irradiated object 10, the projection light generation unit 121 has the entire projection range of the illumination light as a pattern image or video. This is a video signal. The projection light data input or generated by the projection light generation unit 121 is supplied to the illumination light correction unit 122.

  The illumination light correction unit 122 corrects the projection light data so as to coat the irradiated object 10 with the illumination light when the irradiated object 10 is irradiated with the illumination light. The illumination light correction unit 122 corrects the projection light data so that the contour of the illumination light matches the contour of the irradiated object 10 by a coating correction process described below.

  The coating correction process corrects the projection light data so as to cut the contour of the illumination light included in the illumination light in accordance with the contour shape of the irradiated object 10. Thus, the coating correction process performs the cutting process on the illumination light irradiation range so that the illumination light is projected only on the irradiated object 10 and the background light is projected on the area other than the irradiated object 10.

  Here, the coating correction process uses shape data of the irradiation object 10 having an arbitrary shape. In the coating correction process, the irradiation range of the illumination light is cut according to the shape data. This shape data may be obtained by analyzing an image photographed by the camera device 3 and extracting the shape of the irradiated object 10, and is multi-directional shape data reproduced three-dimensionally by computer graphic technology. There may be.

  In the coating correction process, the illumination light correction unit 122 performs the mapping process using the shape data, thereby creating projection light data in which the shape and size of the illumination light according to the shape of the irradiated object 10 are adjusted. By this mapping process, the projection light data representing the planar image is mapped to the projection light data in which the illumination light is mapped only on the irradiation object 10 having an arbitrary shape, and the illumination light is not mapped on a portion other than the irradiation object 10. Become. The video signal subjected to this mapping process is a video signal for projecting illumination light onto the irradiated object 10 and projecting background light to a portion other than the video portion corresponding to the illumination light.

  The illumination light correction unit 122 may also input the performance of the projector 2 such as the projection angle of view and the optical axis shift amount of the projector 2 and the position of the observer from the personal computer 4 to correct the projection light data. . Specifically, the illumination system inputs from the personal computer 4 a preset observer position, the shape of the irradiated object 10, and the relative position and orientation of the projector 2 and the irradiated object 10. Then, a correction table is created as a correction parameter that can be coated when the illumination light is projected onto the irradiated object 10. This correction table is a correspondence map between a flat projection surface and a mesh model of the projection surface of the irradiated object 10 having an arbitrary shape. This correspondence map is used to perform coordinate conversion according to the correction table, and to convert projection light data for flat display into projection light data for display in an arbitrary shape for each pixel of the projection light data.

  In this way, the illumination light correction unit 122 can change the contour of the illumination light in the projection light in accordance with the shape of the irradiated object 10.

  The projection light data generation unit 12 includes a projection light correction unit 123 that inputs distance information from the distance measurement unit 20 and corrects the characteristics of the projection light. The projection light correction unit 123 changes at least one of the luminous flux of the projection light, the color density, and the projection range based on the distance information between the projector 2 and the irradiated object 10 measured by the distance measurement unit 20. It becomes a control means. Since the projection light attenuates as the distance between the projector 2 and the irradiated object 10 increases, in order to irradiate the irradiated object 10 as desired by the user, the luminous flux and color density of the projected light are increased. There is a need. Therefore, in this illumination system, when the projector 2 and the irradiated object 10 are installed, the distance measurement unit 20 only measures the distance between the projector 2 and the irradiated object 10 and can cover the object with an appropriate luminous flux and color intensity. It is possible to project illumination light on the irradiated object 10 and project background light on the background. Further, the projection range of the projector 2 is narrowed as the distance between the projector 2 and the irradiated object 10 measured by the distance measurement unit 20 is longer, and the projection range of the projector 2 is expanded as the distance is shorter. Thereby, the projection range with respect to the irradiated object 10 is set as the projection range desired by the user.

  That is, the characteristics of the projection light including the illumination light and the background light flux, the color, the color temperature, the projection range, and the like in the projection light can be adjusted according to the user's operation on the personal computer 4. However, according to this illumination system, the distance measuring unit 20 actually measures the distance between the projector 2 and the irradiated object 10 by the user's work, and according to this distance, the luminous flux of the projection light, the color density, the projection Correct the range. This allows the user to specify the desired projection light characteristics without having to be aware of the exact distance between the projector 2 and the irradiated object 10 and to obtain the appropriate luminous flux, color even if he / she does not have specialized skills. It is possible to project the illumination light onto the irradiated object 10 and project the background light on the background in the darkness and projection range.

  The projection light correction unit 123 changes at least one of the luminous flux of the projection light, the color density, and the projection range based on the distance between the projector 2 and the irradiated object 10 measured by the distance measurement unit 20. It may be a thing.

  Specifically, in the illumination system, when the personal computer 4 is operated, the user designates the luminous flux [lm] of the projector 2 according to the distance between the projector 2 and the irradiated object 10. For example, the luminous flux [lm] is determined based on the distance threshold such that the distance between the projector 2 and the irradiated object 10 is 70% when the distance is 5 m to 10 m, 90% when 10 m to 15 m, and 100% when 15 m or more. In contrast, the illumination system increases the luminous flux [lm] by the projection light correction unit 123 in proportion to the distance measured by the distance measurement unit 20. Further, the projection light correction unit 123 may increase the luminous flux [lm] in proportion to the square of the distance. As a result, the illumination system adjusts the light flux of the projection light according to the actually measured distance with the light flux of the projection light according to the distance desired by the user as a reference, and obtains the projection light of the light flux according to the user's wish. The irradiated object 10 can be irradiated.

  The projection light drawing unit 14 performs a drawing process on the projection light data supplied from the projection light data generation unit 12 and projects the projection light from the projector 2. Here, when the projection light data is generated for each of the projectors 2A and 2B by the projection light data generation unit 12, the projection light drawing unit 14 performs a drawing process on each projection light data, Projection light is projected from the projectors 2A and 2B. Note that the drawing process by the projection light drawing unit 14 will be supplementarily described later.

  As described above, according to this illumination system, the distance measuring unit 20 is provided in the projector 2, and the distance between the projector 2 and the irradiated object 10 can be measured with a simple operation. The distance measured by the distance measuring unit 20 Accordingly, the characteristics of the projection light can be corrected.

  Further, according to this illumination system, the luminous flux of the projection light can be arbitrarily changed according to the distance between the projector 2 and the irradiated object 10 measured by the distance measuring unit 20 by a simple preliminary work of the user, The light beam set according to the user's wish can be corrected to an appropriate light beam according to the actually measured distance.

[Second Embodiment]
Next, an illumination system according to a second embodiment to which the present invention is applied will be described. In addition, about the part which overlaps with the description mentioned above, the detailed description is abbreviate | omitted by attaching | subjecting the same code | symbol.

  As shown in FIG. 4, this illumination system measures an angle between an optical axis direction of projection light projected from the projector 2 by a user's work and a straight line connecting the projector 2 and the irradiated object 10. As control means for controlling the projection light projected by the projector 2 using the horizontal rotation detection unit 21 and vertical rotation detection unit 22 as means, and the angle measured by the horizontal rotation detection unit 21 and vertical rotation detection unit 22 The light distribution direction calculation unit 124 is different from the illumination system according to the first embodiment.

  In addition, the illumination system is a control unit that controls the projection light projected by the projector 2, and the projection light projected from the projector 2 based on the angles measured by the horizontal rotation detection unit 21 and the vertical rotation detection unit 22. The horizontal rotation driving unit 23 and the vertical rotation driving unit 24 are controlled so that the optical axis of the light beam is directed toward the irradiated object 10.

  As shown in FIG. 5A, the projector 2 in such an illumination system is provided with a horizontal rotation detection unit 21 and a vertical rotation detection unit 22 below the projector 2. The horizontal rotation detection unit 21 can rotate in the horizontal direction of the projector 2. The amount of rotation of the projector 2 in the horizontal direction is measured by an angle sensor provided in the horizontal rotation detection unit 21. The measured horizontal rotation amount is supplied to the light control unit 1. The vertical rotation detection unit 22 can rotate in the vertical direction of the projector 2. The amount of rotation of the projector 2 in the vertical direction is measured by an angle sensor provided in the vertical rotation detection unit 22. The measured amount of rotation in the vertical direction is supplied to the light control unit 1.

  In addition, the belt-like object 221 can be pulled out from the vertical rotation detection unit 22 by a built-in winding mechanism. Accordingly, the grounding portion 222 of the strip 221 is brought into contact with the irradiated object 10, and the horizontal rotation detection unit 21 and the vertical rotation detection unit 22 are set so that the strip 221 is linear with respect to the irradiated object 10. Rotate horizontally and vertically. The amount of rotation in the horizontal direction and the vertical rotation is detected by the horizontal rotation detection unit 21 and the vertical rotation detection unit 22.

  Therefore, as shown in the top view of FIG. 5B, the light distribution direction calculation unit 124 calculates the light from the projector 2 based on the amount of rotation in the horizontal direction when the horizontal rotation detection unit 21 is rotated in the horizontal direction. An angle θ1 with respect to the axis (horizontal direction) can be obtained. Similarly, as shown in the side view of FIG. 5C, the light distribution direction calculation unit 124 determines whether or not the light distribution direction calculation unit 124 of the projector 2 is based on the amount of rotation in the vertical direction when the vertical rotation detection unit 22 is rotated in the vertical direction. An angle θ2 with respect to the optical axis (vertical direction) can be obtained.

  As described above, according to the illumination system according to the second embodiment, only the work of bringing the grounding portion 222 at the tip of the belt-like object 221 into contact with the object to be irradiated 10 with respect to the optical axis direction when the projector 2 is installed. The horizontal direction angle θ1 and the vertical direction angle θ2 formed by the straight line connecting the projector 2 and the irradiated object 10 can be easily obtained.

  The illumination system then applies the optical axis of the projection light projected from the projector 2 based on the horizontal direction angle θ1 and the vertical direction angle θ2 measured by the horizontal rotation detection unit 21 and the vertical rotation detection unit 22 to the irradiated object 10. The horizontal rotation drive unit 23 and the vertical rotation drive unit 24 are controlled so that the The horizontal rotation driving unit 23 and the vertical rotation driving unit 24 are provided on the upper portion of the projector 2 as shown in FIG. The horizontal rotation drive unit 23 includes a rotary actuator that rotates in the horizontal direction, and the vertical rotation drive unit 24 includes a rotation actuator that rotates in the vertical direction.

  The horizontal rotation drive unit 23 and the vertical rotation drive unit 24 are supplied with control signals from the light control unit 1 based on the horizontal direction angle θ1 and the vertical direction angle θ2 calculated by the light distribution direction calculation unit 124. The horizontal rotation drive unit 23 is rotated by a horizontal direction angle θ1 according to the control signal, and the vertical rotation drive unit 24 is rotated by a vertical direction angle θ2 according to the control signal. Thereby, the optical axis of the projector 2 can be directed to the irradiated object 10.

  As described above, according to the illumination system according to the second embodiment, the horizontal angle θ1 and the vertical angle θ2 are measured by a simple preliminary work by the user, and the measured horizontal angle θ1 and vertical angle θ2 are measured. The optical axis of the projector 2 can be directed to

[Third Embodiment]
Next, an illumination system according to a third embodiment to which the present invention is applied will be described. In addition, about the part which overlaps with the description mentioned above, the detailed description is abbreviate | omitted by attaching | subjecting the same code | symbol.

  As shown in FIG. 7, the illumination system is configured such that the distance between the projector 2 and the irradiated object 10, the horizontal angle θ 1 and the vertical are detected by the distance measuring unit 20, the horizontal rotation detection unit 21, and the vertical rotation detection unit 22. The direction angle θ2 is measured and supplied to the light control unit 1.

  Further, the illumination system causes the projection light data generation unit 12 to measure the distance measured by the distance measurement unit 20 by the user's work, and the horizontal direction angle measured by the horizontal rotation detection unit 21 and the vertical rotation detection unit 22 by the user's work. A position coordinate calculation unit 125 is further provided as position coordinate calculation means for calculating the positional relationship between the projector 2 and the irradiated object 10 using θ1 and the vertical angle θ2. The position coordinates calculated by the position coordinate calculation unit 125 are used for correction of projection light by the projection light correction unit 123 serving as control means.

As shown in FIG. 8A, the position coordinate calculation unit 125 sets the installation positions of the vertical rotation detection unit 22 and the distance measurement unit 20 as origin coordinates (Xo, Yo, Zo) for distance measurement and angle measurement. The pull-out length S of the band 202 is measured by the distance measuring unit 20, and the horizontal direction angle θ1 and the vertical direction angle θ2 when the grounding unit 203 is in contact with the irradiated object 10 are the horizontal rotation detecting unit 21 and the vertical rotation. It is measured by the detection unit 22. When the grounding portion 203 is in contact with the irradiated object 10, the coordinates (Xe, Ye, Ze) of the grounding portion 203 are
Xe = S × cos θ1 × cos θ2
Ye = S × sin θ 2
Ze = S × cos θ1 × sin θ1
It is represented by

Then, as shown in FIG. 8B, the origin coordinates (Xo, Yo, Zo) are the origin (0, 0, 0) and the light source coordinates of the projector 2 are (Xp, Yp, Zp). The origin coordinates (Xo, Yo, Zo) and the light source coordinates (Xp, Yp, Zp) for distance measurement and angle measurement are mounted on the projector 2, the distance measurement unit 20, the horizontal rotation detection unit 21, and the vertical rotation detection unit 22. It is uniquely determined from the relationship with the position. Therefore, the coordinates of the grounding portion 203 viewed from the light source coordinates (Xp, Yp, Zp) are
Xe = S × cos θ1 × cos θ2-Xp
Ye = S × sin θ2-Yp
Ze = S × cos θ1 × sin θ1-Zp
It becomes. As described above, the position coordinate calculation unit 125 calculates the distance S measured by the distance measurement unit 20, the θ1 measured by the horizontal rotation detection unit 21, and the θ2 measured by the vertical rotation detection unit 22 from the above formula. The coordinates (Xe, Ye, Ze) representing the positional relationship of the irradiated object 10 as viewed from the light source coordinates can be obtained.

The projection light correction unit 123 changes at least one of the characteristics including the projection range A _{P of} the projection light projected by the projector 2, the luminance, and the color temperature using the position coordinates calculated by the position coordinate calculation unit 125. Make corrections. Here, the projection light correction unit 123, the projection range A _P of the projector 2 based on the position coordinates are corrected to direct irradiation target object 10. Thereby, the illumination light is projected onto the irradiated object 10 and the background light is projected near the irradiated object 10, thereby avoiding projecting the projection light onto a portion other than the irradiated object 10. Further, even when the light flux and the color temperature change according to the distance between the projector 2 and the irradiated object 10, the light flux and the color temperature are adjusted based on the positional relationship between the projector 2 and the irradiated object 10. Thus, it is possible to irradiate illumination light and background light having a light flux and color temperature according to the user's wishes.

  In addition, this illumination system may use both or one of the illumination light projected on the irradiated object 10 and the background light projected on other than the irradiated object 10 as an image. In this case, the projection light generation unit 121 of the projection light data generation unit 12 generates video data. Then, the projection light generation unit 121 uses the position coordinates calculated by the position coordinate calculation unit 125 to perform distortion correction processing so that the image can be seen without distortion when the image is projected onto the irradiated object 10.

  Specifically, the projection light generation unit 121 determines the user based on the shape of the irradiated object 10, the positional relationship between the projector 2 and the irradiated object 10 calculated by the position coordinate calculation unit 125, the user's viewpoint position, and the like. This is realized by a known coordinate conversion process so that the image projected onto the irradiated object 10 from the viewpoint position can be seen without distortion. This coordinate conversion process is realized by a projection light data correction process to be described later. Similarly, when an image is projected on a place other than the irradiated object 10, a distortion correction process is performed so that the image can be seen without distortion in a state where the image is projected on a place other than the irradiated object 10.

  As described above, according to the illumination system according to the third embodiment, the distance measurement unit 20 detects the distance and the projector at the same time with only the user's simple work of bringing the grounding unit 203 into contact with the irradiated object 10. The horizontal angle θ1 and the vertical angle θ2 of the irradiated object 10 with respect to the two optical axes can be detected. Thereby, the illumination system calculates the positional relationship of the irradiated object 10 by the position coordinate calculation unit 125, and corrects the projection light correction unit 123 to change the characteristics of the projection light projected by the projector 2 using the position coordinates. It can be carried out.

  Further, according to this illumination system, when at least one of illumination light and background light is used as an image, and the image is projected on the irradiated object 10 using the position coordinates calculated by the position coordinate calculation unit 125, the image is displayed. The distortion correction process is performed so that the image appears without distortion. Thereby, according to the illumination system, even if an image is projected onto the irradiated object 10 based on the positional relationship where the actual projector 2 and the irradiated object 10 are installed, an image without distortion can be viewed. .

"Correction processing of projection light data"
Next, projection light data correction processing in this illumination system will be described. The following description is a process for generating “projection light including first irradiation light irradiated so as to cover the irradiated object 10 and second irradiation light irradiated other than the irradiated object 10”. is there.

  For example, as illustrated in FIG. 9, a planar object 10 is considered as an irradiation object 10 having an arbitrary shape, which is separated from the user U by a distance L and is inclined with respect to the user U. The flat object 10 is visually recognized from the viewpoint position P1 of the user U at a viewing angle θ1. The distance from the point P2 on the flat object 10 intersecting the user U's visual field center to the user U is a distance L1.

  In the positional relationship between the viewpoint position P1 and the point P2 on the flat object 10, as shown in FIG. 10A, the lattice-like planar image 100 (coating light) shown in FIG. Consider the case of viewing on the flat object 10 through the viewing image plane 50U. In this case, when the same image is displayed on the flat object 10 as the flat image 100 shown in FIG. 10B is displayed on the image surface 50U, each coordinate on the image surface 50U and each image on the flat object 10 are displayed. It is necessary to obtain the correspondence with the coordinates. Although schematically shown in FIG. 10A, the points b1, b2, b3, b4, and b5 on the image plane 50U correspond to the points a1, a2, a3, a4, and a5 on the flat object 10. ing. Therefore, the images displayed at the points a1, a2, a3, a4, and a5 on the flat object 10 are visually recognized by the user U as the points b1, b2, b3, b4, and b5 on the image surface 50U.

  Further, as shown in FIG. 11, a point P2 where the line of sight of the user U intersects the flat object 10 and a projection position P3 of the projector 2 are a distance L2. Further, the projector 2 projects the projection light within a predetermined projection angle of view θ2.

  In this case, the positional relationship between the image plane 50P of the projector 2 and the flat object 10 is such that the points a1, a2, a3, a4, a5 on the flat object 10 are on the image surface 50P as shown in FIG. Corresponding to points c1, c2, c3, c4 and c5. That is, points on a straight line obtained by extending the points c1, c2, c3, c4, and c5 on the image plane 50P from the projection position P3 of the projector 2 become the points a1, a2, a3, a4, and a5 of the flat object 10. .

  From such a relationship between the viewpoint position P1 and viewing angle θ1 of the user U, the position of the flat object 10, the projection position P3 of the projector 2, and the projection angle of view θ2, the image plane 50P in the projector 2 shown in FIG. When an image is projected onto the upper points c1, c2, c3, c4, and c5, the image is projected onto the points a1, a2, a3, a4, and a5 on the flat object 10. As a result, the points a1, a2, a3, a4, and a5 on the flat object 10 are visually recognized as the points b1, b2, b3, b4, and b5 on the image plane 50U in FIG. Therefore, in order for the user U to visually recognize the flat image 100, the projector 2 uses the coordinates on the flat object 10 corresponding to the coordinates on the image surface 50U and the flat plate corresponding to the coordinates on the image surface 50P. Based on the correspondence with each coordinate on the object 10, it is necessary to project a distorted planar image 100 ″ as shown in FIG.

  In order to realize such projection operation of illumination light, the light control unit 1, as shown in FIG. 9, the viewpoint position indicating the viewpoint position P <b> 1 of the user U, the viewpoint position / posture parameter indicating the line-of-sight direction, and the user U A viewing angle parameter indicating the viewing angle θ1 is acquired. These user U parameters define the video plane 50U described above.

  Further, the shape data of the flat object 10 onto which the illumination light emitted from the projector 2 is projected is acquired. This shape data is, for example, CAD data. Here, the viewpoint position and orientation parameter is a numerical value that defines a position on the X, Y, and Z axes and a rotation angle around the axis in a three-dimensional coordinate space. This viewpoint position and orientation parameter uniquely determines the distance L1 between the viewpoint position P1 and the flat object 10 and the attitude of the flat object 10 with respect to the viewpoint position P1. The shape data of the flat object 10 is defined as a shape region in a three-dimensional coordinate space based on electronic data created by CAD or the like. This shape data uniquely determines the shape of the flat object 10 viewed from the viewpoint position P1. The shape data of the flat object 10 and the parameters of the user U determine the correspondence between the coordinates of the video plane 50U and the coordinates on the flat object 10.

  In addition, as shown in FIG. 11, the projector 2 is installed, and the light control unit 1 includes the projection position P3 of the projector 2, the position and orientation parameter indicating the optical axis direction of the projector 2, and the projection angle of view of the projector 2. A projection field angle parameter indicating θ2 is acquired. The position and orientation parameters and the projection angle of view parameter of the projector 2 represent the image plane 50P that the projector 2 projects onto the flat object 10. When the image plane 50P is determined, it is determined on which coordinate of the flat object 10 the illumination light projected from the projector 2 is projected via the image plane 50P. That is, the position and orientation parameters and projection angle of view parameter of the projector 2 and the position and orientation parameters and shape data of the flat object 10 uniquely determine the range of the flat object 10 covered by the illumination light emitted from the projector 2. . When the projector 2 is a projector, the projection position P3 is defined by the back focus and the driving angle, and the projection angle of view θ2 is calculated from the horizontal and vertical projection ranges at a fixed distance from the projection position P3.

  The light control unit 1 then intersects the image plane 50P with a straight line connecting the pixels (a1, a2, a3, a4, a5) of the illumination light displayed on the flat object 10 and the projection position P3 of the projector 2. A plane image 100 ″ is formed by arranging pixels at (c1, c2, c3, c4, c5), and the plane image 100 ″ is projected onto the flat object 10. Then, the points c1, c2, c3, c4, c5 on the image plane 50P, the points a1, a2, a3, a4, a5 on the flat object 10, and the points b1, b2, b3, b4, b5 on the image plane 50U. In this way, the user U can visually recognize an image without distortion.

  Similarly, even if the irradiated object 10 is not in the shape of the flat object 10 but is in an arbitrary shape such as a dome shape, it is coated with illumination light without distortion, and the irradiated object 10 is visually recognized by the user U. Can be made. Assume that the irradiated object 10 is a dome-shaped object 10 as shown in FIG. 13A, and the user U visually recognizes the lattice-shaped illumination light as shown in FIG. 13B. In this case, the user U can visually recognize the points a1, a2, a3, a4, and a5 on the dome-shaped object 10 on the extension line of the points b1, b2, b3, b4, and b5 on the video screen 50U. On the other hand, the projector 2 projects projection light onto the image plane 50P as shown in FIG. The projection light that has passed through the points c1, c2, c3, c4, and c5 on the image plane 50P is projected onto the points a1, a2, a3, a4, and a5 on the dome-shaped object 10, and the image shown in FIG. It is visually recognized as points b1, b2, b3, b4, b5 on the surface 50U. Therefore, the projector 2 projects a flat image 100 ″ distorted as shown in FIG. 14B on the image surface 50 </ b> P. On the other hand, the user U can visually recognize a flat image 100 without distortion as shown in FIG.

  The above-described embodiment is an example of the present invention. For this reason, the present invention is not limited to the above-described embodiment, and various modifications can be made depending on the design and the like as long as the technical idea according to the present invention is not deviated from this embodiment. Of course, it is possible to change.

It is a block diagram of the illumination system which concerns on 1st Embodiment to which this invention is applied. It is a block diagram which shows the functional structure of the illumination system which concerns on 1st Embodiment to which this invention is applied. It is a figure which shows a mode that the distance of a projector and a to-be-irradiated object is measured in the illumination system which concerns on 1st Embodiment to which this invention is applied, (a) is a perspective view, (b) is a side view. It is a block diagram which shows the functional structure of the illumination system which concerns on 2nd Embodiment to which this invention is applied. It is a figure which shows a mode that the angle of a projector and a to-be-irradiated object is measured in the illumination system which concerns on 2nd Embodiment to which this invention is applied, (a) is a perspective view, (b) is a top view, (c) is a top view. It is a side view. It is a perspective view which shows the structure which rotationally drives the direction of a projector to a to-be-irradiated object in the illumination system which concerns on 2nd Embodiment to which this invention is applied. It is a block diagram which shows the functional structure of the illumination system which concerns on 3rd Embodiment to which this invention is applied. It is explanatory drawing which calculates | requires the position coordinate of the to-be-irradiated object with respect to a projector in the illumination system which concerns on 3rd Embodiment to which this invention is applied. It is a figure which shows a user's viewpoint position with respect to a flat irradiated object, a viewing angle, and distance in the illumination system to which this invention is applied. It is a figure explaining the image | video which a user visually recognizes in the illumination system to which this invention is applied, seeing a flat irradiated object from a user. It is a figure which shows the projection position of the irradiation light projection part with respect to a flat irradiation object, a projection angle of view, and distance in the illumination system to which this invention is applied. In the illumination system to which the present invention is applied, it is a diagram for explaining how light is projected from an irradiation light projection unit onto a flat object to be irradiated. It is a figure explaining the image | video which a user visually recognizes in the illumination system to which this invention is applied, seeing a dome-shaped irradiated object from a user. It is a figure explaining a mode that light is projected on the dome-shaped irradiated object from the irradiation light projection part in the illumination system to which this invention is applied.

Explanation of symbols

DESCRIPTION OF SYMBOLS 1 Light control unit 2 Projector 3 Camera apparatus 4 Personal computer 10 Dome type object 10 Irradiated object 11 Photographed image data input part 12 Projection light data generation part 13 Image storage part 14 Projection light drawing part 20 Distance measurement part 21 Horizontal rotation detection part DESCRIPTION OF SYMBOLS 22 Vertical rotation detection part 23 Horizontal rotation drive part 24 Vertical rotation drive part 31 Shooting part 32 Captured image data output part 41 Display monitor 42 Keyboard 43 Mouse 121 Projection light generation part 122 Illumination light correction part 123 Projection light correction part 124 Light distribution direction Calculation unit 125 Position coordinate calculation unit

Claims (8)

An illumination device that projects projection light toward an irradiation object of an arbitrary shape,
A projection means for projecting projection light including first irradiation light irradiated so as to cover the irradiated object and second irradiation light irradiated other than the irradiated object;
Distance measuring means for measuring a distance between the projection means and the irradiated object by a user's work;
And a control unit that controls the projection light projected by the projection unit using the distance measured by the distance measurement unit.   The control means changes at least one of the luminous flux of the projection light, the color density, and the projection range based on the distance between the projection means and the irradiated object measured by the distance measurement means. The lighting device according to claim 1, wherein An illumination device that projects projection light toward an irradiation object of an arbitrary shape,
A projection means for projecting projection light including first irradiation light irradiated so as to cover the irradiated object and second irradiation light irradiated other than the irradiated object;
Angle measuring means for measuring an angle formed by an optical axis direction of projection light projected from the projection means by a user's work and a straight line connecting the projection means and the irradiated object;
And a control unit that controls the projection light projected by the projection unit using the angle measured by the angle measurement unit.   The control means controls a rotation driving means for directing an optical axis of projection light projected from the projection means toward the irradiated object with reference to an angle measured by the angle measurement means. Item 4. The lighting device according to Item 3. An illumination device that projects projection light toward an irradiation object of an arbitrary shape,
A projection means for projecting projection light including first irradiation light irradiated so as to cover the irradiated object and second irradiation light irradiated other than the irradiated object;
Distance measuring means for measuring a distance between the projection means and the irradiated object by a user's work;
Angle measuring means for measuring an angle formed by an optical axis direction of projection light projected from the projection means by a user's work and a straight line connecting the projection means and the irradiated object;
An illuminating device comprising: a control unit that controls projection light projected by the projection unit using the distance measured by the distance measurement unit and the angle measured by the angle measurement unit. Using a distance measured by the distance measuring means and an angle measured by the angle measuring means, further comprising a position coordinate calculating means for calculating a positional relationship between the projecting means and the irradiated object,
The lighting device according to claim 5, wherein the control unit corrects the projection light by using the position coordinates calculated by the position coordinate calculation unit.   The control means performs correction for changing at least one of a luminous flux, a color density, and a projection range of projection light projected by the projection means using the position coordinates calculated by the position coordinate calculation means. The lighting device according to claim 6. At least one of the first irradiation light and the second irradiation light is an image,
The control means performs a distortion correction process using the position coordinates calculated by the position coordinate calculation means so that the image can be seen without distortion when the image is projected onto the irradiated object. Item 7. The lighting device according to Item 6.

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