WO2018055722A1 - Video projection lighting device - Google Patents

Abstract

The present invention is provided with: a video projection unit that projects video onto a first region; and a peripheral lighting unit that emits a luminous flux of peripheral light that illuminates a second region surrounding the first region.

Description

Video projection lighting device

The present invention relates to a video projection illumination device.

Various devices have been provided that improve the visibility of the visual field range and improve the realistic sensation of the displayed image by surrounding illumination.

For example, Patent Document 1 discloses an endoscope configured such that illumination light transmitted through a lens is distributed so that the center is dark and the periphery is brightened in a ring shape. In this endoscope, the illumination light emitted from the optical element illuminates the periphery of the visual field range in a ring shape, so that the visual field range such as the inner wall surface of the tube at the time of use is efficiently and preferentially illuminated.

Japanese Patent Application Laid-Open No. 2004-228561 can enhance the sense of realism of an image displayed on the screen of the image display device by controlling the illumination of the viewing space in conjunction with the image displayed on the screen of the image display device. An illumination method and an illumination device are disclosed. In order to enhance the realistic sensation of an image, for example, the lighting device is virtualized from an image displayed on the image display device with at least one of the illumination level, light color, light distribution, and direction of the viewing space. One or more light sources provided in the viewing space are controlled so as to substantially match the corresponding parameters in the virtual image space.

JP-A-60-52816 JP 2000-173783 A

In the endoscope disclosed in Patent Document 1, the optical element emits the illumination light received from the light guide from the emission end, but the brightness of the illumination light cannot be controlled for each region. Moreover, the emitted illumination light is not bright enough for general illumination.

Further, in Patent Document 2, the image display device and the illumination device are configured separately. For this reason, the user needs to separately prepare an image display device and an illumination device suitable for the viewing space, and then adjust the image and the illumination light so that the sense of reality of the image is improved. However, the image quality may deteriorate due to insufficient adjustment of the image and the illumination light, such as when the image and the illumination light are overlapped only by integrating them.

Therefore, an object of the present invention is to provide a video projection illumination device that illuminates the periphery of a projection video while suppressing deterioration in image quality of the projection video.

Of the inventions disclosed in this application, the outline of typical ones will be briefly described as follows.

An image projection illumination apparatus according to a representative embodiment of the present invention emits a light beam of ambient illumination light that illuminates a second area surrounding a first area and a video projection unit that projects an image onto the first area. And an ambient lighting unit.

Among the inventions disclosed in the present application, effects obtained by typical ones will be briefly described as follows. That is, according to the representative embodiment of the present invention, it is possible to provide a video projection illumination device that illuminates the periphery of the projection video while suppressing deterioration in the image quality of the projection video.

It is a figure which shows an example of a structure of the video projection illumination apparatus which concerns on Embodiment 1 of this invention. It is a block diagram which shows an example of the system configuration | structure of the video projection illumination apparatus which concerns on Embodiment 1 of this invention. It is a figure which shows an example of a structure of the light source which concerns on Embodiment 1 of this invention. It is a figure which illustrates the use condition of the image projection illumination apparatus which concerns on Embodiment 1 of this invention. It is sectional drawing of the periphery illumination part which concerns on Embodiment 1 of this invention. It is a figure explaining the principle of the light distribution control by a periphery illumination orientation control part. It is a figure which shows the relationship between the irradiation distance of ambient illumination light and center illumination light, and illuminance distribution. It is a figure which shows the relationship between the irradiation distance of ambient illumination light and center illumination light, and illuminance distribution. It is a flowchart figure which shows an example of the usage method of the video projection illumination apparatus which concerns on Embodiment 1 of this invention. It is a figure which shows the example of the combination of the shape of the image | video projection area | region which concerns on Embodiment 2 of this invention, and the shape of an image | video peripheral area. It is a figure which shows an example of a structure of the surrounding illumination part and center illumination part which concern on Embodiment 2 of this invention. It is a figure which shows the example of the combination of the projection image and surrounding illumination light which concern on Embodiment 3 of this invention. It is a figure which shows an example of the form of the auxiliary illumination light in Embodiment 3 of this invention. It is a figure which shows the other example regarding the image | video control using the auxiliary illumination light which concerns on Embodiment 3 of this invention. It is a figure which shows an example of the video projection illumination apparatus which concerns on Embodiment 4 of this invention. It is sectional drawing which shows the modification of the light distribution control part which concerns on Embodiment 5 of this invention. It is sectional drawing which shows an example of the light distribution control using the diffusion cover which concerns on Embodiment 6 of this invention. It is a figure which shows an example of the orientation control using the spreading | diffusion cover which made the spreading | diffusion performance differ in the side surface side and the video projection side in Embodiment 6 of this invention. It is sectional drawing which shows an example of the modification of the light source which concerns on Embodiment 7 of this invention. It is a figure which shows the other modification of the light source which concerns on Embodiment 7 of this invention. It is a figure which shows the other modification of the light source which concerns on Embodiment 7 of this invention. It is a figure which shows the other modification of the light source which concerns on Embodiment 7 of this invention. It is a figure which shows an example of the acquisition method of the three-dimensional positional information which concerns on Embodiment 8 of this invention. It is a figure which shows the example of a structure of the light distribution control part which concerns on Embodiment 9 of this invention. It is a figure which shows an example of the illumination intensity distribution at the time of using the some video projection illumination apparatus which concerns on Embodiment 9 of this invention side by side.

Hereinafter, embodiments of the present invention will be described in detail with reference to the drawings. Note that components having the same function are denoted by the same reference symbols throughout the drawings for describing the embodiment, and the repetitive description thereof will be omitted.

(Embodiment 1)
<Device configuration>
FIG. 1 is a diagram showing an example of the configuration of the video projection lighting apparatus according to Embodiment 1 of the present invention. FIG. 1A is a cross-sectional view of the video projection illumination device, and FIG. 1B is a plan view of the video projection illumination device viewed from the emission side. FIG. 2 is a block diagram showing an example of the system configuration of the video projection illumination apparatus according to Embodiment 1 of the present invention. FIG. 3 is a diagram showing an example of the configuration of the light source according to Embodiment 1 of the present invention. FIG. 3A is a plan view of the light source viewed from the emission side, and FIG. 3B is a cross-sectional view of the light source. FIG. 4 is a diagram illustrating a usage state of the video projection illumination device according to the first embodiment of the present invention. FIG. 4A is a diagram showing a usage situation in a video playback mode to be described later. FIG. 4B is a diagram illustrating a usage situation in an illumination mode to be described later.

As shown in FIG. 1A, the video projection illumination device 1 includes a light source substrate 51, a light source 5, a light distribution control unit 6, a video projection unit 7, a camera (imaging unit) 8, an environmental sensor 9, a housing 10, and the like. It has. Further, as shown in FIG. 2, for example, the video projection illumination device 1 includes a power source 107, an environment sensing unit 100, an operation input unit 101, a data storage unit 102, a video reception unit 103, a control unit 110, an ambient illumination unit 21, An illumination unit 22 and the like are provided. The control unit 110 includes an illumination video management unit 106, an illumination control unit 104, and a video control unit 105, as shown in FIG.

The light source substrate 51 is made of a material having excellent heat dissipation, such as a metal substrate or a ceramic substrate. On the first main surface 51a of the light source substrate 51, for example, as shown in FIG. 1A, a light source 5, a circuit pattern (not shown) connected to the light source 5, and the like are provided. A circuit pattern may also be formed on the second main surface 51 b of the light source substrate 51. In this case, the circuit pattern of the first main surface 51a and the second main surface 51b are formed through through holes (not shown) penetrating the first main surface 51a and the second main surface 51b of the light source substrate 51. A circuit pattern may be connected. Electric power is supplied to the light source 5 from the power source 107 via the circuit pattern.

For example, as shown in FIG. 1B, a plurality of light sources 5 are arranged in an annular shape in plan view when viewed from the emission side. For example, the plurality of light sources 5 have a double structure in which a plurality of light sources 5 are arranged along the respective circumferential directions of the inner periphery and the outer periphery. In FIG.1 (b), the light source 5 is arrange | positioned at both the inner periphery and outer periphery in the annular | circular shape. However, in addition to this, the light source 5 may be arranged in an elliptical ring shape, a rectangular ring shape, or the like. Further, the shape of the arrangement of the light sources 5 may be different between the inner peripheral side and the outer peripheral side.

The light source 5 includes, for example, a base 5a, an LED (Light Emitting Diode) chip 5c, and a sealing body 5d as shown in FIG. For example, as shown in FIG. 3, the base 5 a has a rectangular shape in a plan view from the emission side and a U shape in a sectional view. As shown in FIG. 3B, the base 5a has an opening 5b, and the LED chip 5 is disposed in the opening 5b of the base 5a. The sealing body 5 covers the LED chip 5c and is provided so as to fill the space in the opening 5b of the base body 5a.

The base 5a is made of a material having excellent heat dissipation, such as metal or ceramic. The sealing body 5d is made of, for example, a transparent resin. In FIG. 3A, the shape of the base body 5a in a plan view is a rectangle, but other than this, for example, any shape such as a polygon excluding a rectangle, a circle, an ellipse, or the like may be used.

The light source 5 is composed of, for example, an LED chip 5c that emits white light. Alternatively, the light source 5 may be composed of, for example, an LED chip 5c that emits blue light and a phosphor that is excited by receiving blue light and emits light having a spectral characteristic from green to red. In this case, white light is emitted from the light source 5 by overlapping the blue light and the light emitted from the phosphor. The phosphor is composed of, for example, a YAG (Yttrium Aluminum Garnet) phosphor. The phosphor is mixed with the sealing body 5d, for example.

Also, the light source 5 may be provided with optical components such as a lens and a reflector for adjusting the light distribution of the emitted light and improving the light extraction efficiency. Examples of optical components include a convex lens made of a light-transmitting material, a mirror made of metal vapor deposition, a reflector using total reflection, and the like. The convex lens may be constituted by, for example, a sealing body 5d constituting the light source 5, or may be separately provided on the emission side of the light source 5. Moreover, a mirror may be comprised by metal-depositing the wall surface in the opening part 5b of the light source 5, for example. Further, the reflector may be constituted by a reflector provided on a wall surface or the like in the opening 5 b of the light source 5.

In FIG. 3 (a), one LED chip 5c is provided for each light source 5, but a plurality of LED chips 5c may be provided for each light source 5. As described above, the LED chip 5c is divided into a plurality of parts in the light source 5, whereby the heat dissipation of the LED chip 5c is improved, and the light source 5 having an increased amount of light is provided.

Further, in the light source 5 having the plurality of LED chips 5c, the plurality of LED chips 5c may be arranged symmetrically, for example, in a rectangular shape or a concentric shape with respect to the center of the light emitting surface of the light source 5. desirable. The area where the plurality of LED chips 5c are arranged can be collectively regarded as the light emitting area of the light source 5, and the plurality of LED chips 5c are arranged symmetrically, so that the design of optical components of the light source 5 is facilitated.

In FIG. 3A, the shape of the LED chip 5c is a rectangle in plan view, but other than this, for example, any shape such as a polygon, a circle, an ellipse, etc. excluding the rectangle may be used. Absent. Moreover, in FIG.1 (b), although the several light source 5 is divided | segmented into inner periphery and outer periphery and is arrange | positioned along with two rows concentrically, arrangement | positioning of the light source 5 is limited to such a form. is not. For example, the light sources 5 may be arranged for one row, or may be arranged for three or more rows.

When the light sources 5 are arranged for one row, for example, it is desirable that the light sources 5 that emit the luminous flux of the ambient illumination light 11 and the light sources 5 that emit the central illumination light 12 are alternately arranged. Specifically, it is desirable that the later-described light distribution control unit 6 is provided with alternately a later-described peripheral illumination light distribution control unit 6a and a central illumination light distribution control unit 6b illustrated in FIG. In this case, since the number of the light sources 5 can be reduced, the video projection illumination device 1 with reduced power consumption is provided. In addition, the video projection lighting device 1 that is small in size and easy to handle is provided. On the other hand, when the light sources 5 are provided in three or more rows, the shape of the light distribution control unit 6 may be adjusted so that the orientation control is different for each row or for each light source 5. As described above, by increasing the number of the light sources 5, the video projection illumination device 1 is provided in which a sufficient amount of light is obtained and the degree of freedom of light distribution control of the light emitted from the light sources 5 is improved.

In FIG. 1B, the light sources 5 are arranged concentrically in a plan view from the emission side, but in addition to this, the peripheral illumination light 11 such as a polygonal shape such as a rectangular shape, an elliptical shape, etc. You may change arbitrarily according to the condition of the area | region illuminated with the central illumination light 12, or the area | region where an image | video is projected.

Moreover, it is preferable that the light sources 5 are arranged densely. Here, “densely arranged” means, for example, the peripheral illumination light 11 emitted from the adjacent light sources 5 in the video peripheral region (second region) 11a shown in FIGS. 4 (a) and 4 (b). It means that the light source 5 is arranged so that the ends of the two overlap. Similarly, for the central illumination light 12, “densely arranged” means that the central illumination light emitted from the adjacent light sources 5 in the image peripheral area 11 a shown in FIGS. 4A and 4B. This means that the light source 5 is arranged so that the ends of 12 overlap. In this way, if the light sources 5 are densely arranged, the illuminance distributions of the peripheral illumination light 11 emitted from the respective light sources 5 overlap each other little by little, so that uneven illuminance is suppressed and smooth illuminance is achieved in the video peripheral area 11a. Distribution is obtained. Similarly, with respect to the central illumination light 12, if the light sources 5 are densely arranged, the illuminance distributions of the central illumination light 12 emitted from the respective light sources 5 overlap little by little. A smooth illuminance distribution is obtained at 12a.

Further, when the light sources 5 are arranged in a plurality of rows, it is desirable that the light sources 5 in adjacent rows are arranged so as not to line up in a direction orthogonal to the rows. Specifically, it is desirable that the light sources 5 in adjacent rows are not arranged adjacent to each other but are alternately arranged along the columns. As a result, in the region where the illumination light emitted from the light sources 5 in the adjacent rows overlaps, the region illuminated mainly by the illumination light emitted from the light sources 5 in one row and the other mainly in the rows. The areas illuminated by the illumination light emitted from the light sources 5 in the rows appear alternately. Therefore, in a region where the illumination light emitted from the light sources 5 in the adjacent rows overlaps, the illuminance unevenness of the illuminance distribution due to the illumination light emitted from the light sources 5 arranged in one row, and the light emitted from the light sources 5 in the adjacent rows. Since the illuminance unevenness of the illuminance distribution due to the illuminating light is canceled, high-quality illumination light is provided.

For example, in FIG. 1B, the inner peripheral light source 5 and the outer peripheral light source 5 are arranged only in the radial direction, that is, in the linear direction extending from the center of the light source substrate 51, either the inner peripheral or the outer peripheral light source 5. It has come to be. In the circumferential direction, the inner peripheral light source 5 and the outer peripheral light source 5 are alternately arranged. Thereby, in the area | region of the boundary of the image | video periphery area | region 11a and the image | video projection area | region 12a, the area | region mainly illuminated by the surrounding illumination light 11 and the area | region mainly illuminated by the center illumination light 12 appear alternately. Therefore, the illuminance unevenness of the illuminance distribution due to the ambient illumination light 11 and the illuminance unevenness of the illuminance distribution due to the central illumination light 12 are canceled out, so that high-quality illumination light is provided.

As shown in FIG. 1A, the light distribution control unit 6 is arranged to face the light source substrate 51 on the first main surface 51a side that is the emission side. The orientation control unit 6 includes a peripheral illumination orientation control unit 6a that controls the light distribution of the light source 5 on the outer peripheral side, and a central illumination light distribution control unit 6b that controls the light distribution of the light source 5 on the inner peripheral side. As shown in FIG. 1A, the light distribution control unit 6 is configured by integrating a peripheral illumination orientation control unit 6a and a central illumination orientation control unit 6b. The orientation control unit 6 is made of, for example, a resin having translucency such as polymethyl methacrylate resin (PMMA: Polymethyl Methacrylate), polycarbonate (PC: polycarbonate), or the like. In the orientation control unit 6, for example, an ambient illumination orientation control unit 6a corresponding to a plurality of light sources and a central illumination orientation control unit 6b are integrally molded by injection molding. Thereby, the orientation control unit 6 that is easy to assemble and has reduced manufacturing costs is provided.

The outer peripheral light source 5 and the ambient illumination light distribution control unit 6a constitute an ambient illumination unit 21 shown in FIG. Further, the inner peripheral light source 5 and the central illumination orientation control unit 6b constitute a central illumination unit 22 shown in FIG. For example, as shown in FIG. 1A, the ambient illumination orientation control unit 6 a of the ambient illumination unit 21 has a surface facing the light source 5, that is, a light incident surface 6 c that is flat, and a surface opposite to the light source 5. That is, the light exit surface 6d is formed of a convex lens protruding in the light exit direction. The ambient illumination light distribution control unit 6a suppresses the divergence of the light beam emitted from the light source 5, and emits the light beam emitted from the light source 5 so as not to overlap a video projection region (first region) 12a described later. It is configured to be oriented outward.

Hereinafter, the ambient illumination light distribution control unit 6a will be described in detail. FIG. 5 is a cross-sectional view of the ambient illumination unit according to Embodiment 1 of the present invention. The divergence angle of the luminous flux emitted from the outer light source 5 is suppressed by the peripheral illumination light distribution control unit 6 a of the light distribution control unit 6.

For example, in FIG. 5, the ambient illumination light distribution control unit 6 a is arranged so that its optical axis is located on the opposite side of the image projection unit 7 with respect to the optical axis of the light source 5. Therefore, the peripheral illumination light 11 is emitted toward the outside of the video projection area 12a. Specifically, as indicated by the arrows in FIG. 5, the light beam emitted from the light source 5 is directed toward the image peripheral area 11a outside the front of the video projection illumination device 1, that is, outside the video projection area 12a. Are emitted.

The principle that the ambient illumination light 11 is emitted outward will be described below. FIG. 6 is a diagram for explaining the principle of light distribution control by the ambient illumination orientation control unit. FIG. 6A is a diagram illustrating a state in which the light distribution of the light source is converted when the optical axis of the light source matches the optical axis of the peripheral illumination light distribution control unit. FIG. 6B is a diagram illustrating a state in which the light distribution of the light source is converted when the optical axis of the light source is different from the optical axis of the peripheral illumination light distribution control unit. FIG. 6C is a diagram showing a light distribution in the optical system of FIG. FIG. 6D is a diagram showing a light distribution in the optical system of FIG. FIGS. 6A to 6D show a case where the light source has a diameter of 2R and emits Lambert light.

When the optical axis of the light source 1500 and the optical axis of the lens 1600 are aligned and the light source 1500 is disposed at the focal position f of the lens 1600, for example, as shown in FIG. Go straight in the horizontal direction (the direction of the thick arrow) that is the axial direction. The emitted light beam from the end of the light source 1500 (for example, coordinate r = R) travels downward in the direction of θ _{0 in} the drawing. Note that the emitted light beam from the other end of the light source 1500 (eg, coordinates, r = −R) travels upward in the direction of θ _{0 in} the drawing.

When the center of the light source 1500 is shifted from the axis of the lens 1600 so that the coordinate r = R, the light flux at the center of the optical axis is directed downward in the direction of θ ₀ (the direction of the thick arrow) as shown in FIG. ). The emitted light beam from the end point (coordinate r = 2R) of the light source 1500 travels downward in the direction of 2θ _{0 in} the drawing. The emitted light beam from the other end point (coordinate r = 0) of the light source 1500 travels in the horizontal direction (0 ° direction) in the figure.

As shown by the broken lines in FIGS. 6C and 6D, the light distribution distribution (luminous intensity) I of the light source 1500 that emits Lambert light is the largest in the front direction (θ = 0 °) according to cos θ. The intensity is strong and becomes 0 in the horizontal direction (θ = ± 90 °).

As shown in FIG. 6A, when the optical axes of the light source 1500 and the lens 1600 are aligned and the light source 1500 is disposed at the focal position f of the lens 1600, Lambertian emission is performed as shown in FIG. 6C. light distribution of the light source 1500, a lens 1600 is converted from upward theta ₀ in the light distribution between the downward θ ₀ (± θ _0).

As shown in FIG. 6B, when the center of the light source 1500 is shifted from the axis of the lens 1600 so that the coordinate r = R, the light source 1500 that emits Lambert light is emitted as shown in FIG. The light distribution is converted by the lens 1600 into a light distribution between the angle 0 ° and the downward 2θ ₀ .

If the focal length of the lens 1600 is f, θ ₀ satisfies the condition of tan θ ₀ = R / f. When the light emitting area of the light source 1500 is the same, the divergence angle of the light beam after passing through the lens 1600 is narrower as the focal length of the lens 1600 is longer and wider as the focal length of the lens 1600 is shorter. That is, when the position of the light source 1500 is shifted to the lens 1600 side along the optical axis direction, the light distribution of the light beam after passing through the lens 1600 is widened, and the light quantity is attenuated as the angle with respect to the optical axis is increased.

As described above, if the refraction of the lens is used, the angle at which the light beam emitted from the light source 5 diverges and the direction in which it exits can be controlled. In the present embodiment, as shown in FIG. 1A, the optical axis of the ambient illumination light distribution control unit 6 a in the light distribution control unit 6 is outside the video projection device 1 with respect to the optical axis of the light source 5. Since it has shifted | deviated, the light beam from the light source 5 is radiate | emitted toward an outer side. The ambient illumination light distribution control unit 6a may be a spherical lens, or may be an aspheric lens, a free-form surface lens, or the like according to a desired light distribution.

As described above, the peripheral illumination unit 21 does not illuminate the video projection area 12a, and the video peripheral area (second area) 11a surrounding the video projection area 12a as shown in FIGS. 4A and 4B. The surrounding illumination light 11 to be illuminated is emitted.

On the other hand, the central illumination orientation control unit 6b of the central illumination unit 22 has a flat entrance surface 6c and exit surface 6d as shown in FIG. 1A, for example. Therefore, the central light distribution control unit 6b shown in FIG. 1A does not have the function of changing the orientation of the light emitted from the light source 5, unlike the peripheral orientation control unit 6a. That is, the central illumination orientation controller 6b emits the central illumination light 12 at the same angle as the incident angle on the incident surface 6c. Therefore, the central illumination light 12 emitted from the central illumination unit 22 emits Lambert light to illuminate the video projection area 12a. Hereinafter, the peripheral illumination light 11 and the central illumination light 12 may be collectively referred to as “illumination light”. The peripheral illumination unit 21 and the central illumination unit 22 may be collectively referred to as “illumination unit”.

Note that light passing through a region or an end face where the light distribution control effect is weak may become unnecessary stray light and overlap with illumination light to generate clear bright lines or shadows. For this reason, in the light distribution control unit 6, diffusion processing for diffusing the light beam emitted from the light source 5 is performed on a region or an end surface where the light distribution control effect is weak, or a light shielding surface for shielding the light beam is provided. It may be provided. Thereby, since generation | occurrence | production of a stray light is suppressed, the high quality periphery illumination light 11 and the center illumination light 12 are provided.

In addition, the surrounding illumination part 21 and the central illumination part 22 are provided with two or more, and light distribution control may differ for every illumination part. In addition, the peripheral illumination unit 21 and the central illumination unit 22 may be configured to be able to illuminate over a wide range such as a floor, a wall, and a ceiling, or may be configured to select and illuminate these arbitrary regions. May be. Further, FIG. 1A shows an example in which the peripheral illumination unit 21 is arranged outside the central illumination unit 22, but the arrangement of the peripheral illumination unit 21 and the central illumination unit 22 is limited to such a case. I can't. For example, the central illumination unit 22 may be disposed outside the peripheral illumination unit 21.

7 and 8 are diagrams showing the relationship between the illumination distance of the peripheral illumination light and the central illumination light and the illuminance distribution. FIG. 7 shows the relationship between the irradiation distance and the illuminance distribution when the outer peripheral light source 5 constitutes the peripheral illumination unit 21 and the inner peripheral light source 5 constitutes the central illumination unit 22. On the other hand, FIG. 8 shows the relationship between the irradiation distance and the illuminance distribution in the case where the inner light source 5 forms the peripheral illumination unit 21 and the outer light source 5 forms the central illumination unit 22. . That is, FIG. 8 shows the relationship between the illumination distance of the peripheral illumination light and the central illumination light and the illuminance distribution when the central illumination unit 22 is disposed outside the peripheral illumination unit 21. 7 and 8, the central illumination light distribution control unit 6b of the light distribution control unit 6 protrudes toward the emission side, and the light distribution of the central illumination light 12 is controlled by the central illumination light distribution control unit 6b. .

FIG. 7A shows the illumination range of the peripheral illumination light 11 and the central illumination light 12 at positions separated from the light source substrate 51 in the optical axis direction of the light source 5 by distances L0 and L1 (L0 <L1). FIG. 7B shows the illuminance distribution of the peripheral illumination light 11 and the central illumination light 12 at positions separated from the light source substrate 51 in the optical axis direction of the light source 5 by the distances L0 and L1. In FIG. 7B, an area illuminated by the ambient illumination light 11 at the position of the distance L0 is shown as an illumination area A1, and an area illuminated by the ambient illumination light 11 at the position of the distance L1 is shown as an illumination area A2. . In FIG. 7B, the area illuminated by the central illumination light 12 at the position of the distance L0 is indicated by the illumination area B1, and the area illuminated by the central illumination light 12 at the position of the distance L1 is indicated by the illumination area B2. Has been.

According to FIG. 7A, since the surrounding illumination unit 21 is arranged outside the central illumination unit 22, that is, on the opposite side of the central illumination unit 22 from the video projection unit 7, illumination areas A1 and B1 However, even if the distance L0 changes to L1, the illumination areas A2 and B2 do not intersect. In this case, as shown in FIG. 7B, an illuminance distribution shape that is not affected by the irradiation distance is obtained. In addition, the illumination intensity of each illumination light in illumination area A2, B2 is lower than the illumination intensity in illumination area A1, B1, as shown in FIG.7 (b).

With this configuration, even when the illumination distance is not determined in advance, the user can arbitrarily determine the distance between the video projection illumination device 1 and the projection destination and illumination destination without being affected by the shape of the illumination distribution.

FIG. 8A shows the illumination range of the peripheral illumination light 11 and the central illumination light 12 at positions L0 and L1 (L0 <L1) away from the light source substrate 51 in the optical axis direction of the light source 5. FIG. 8B shows the illuminance distribution of the ambient illumination light 11 and the central illumination light 12 at positions separated from the light source substrate 51 in the optical axis direction of the light source 5 by the distances L0 and L1. In FIG. 8B, an area illuminated by the ambient illumination light 11 at the position of the distance L0 is shown as an illumination area B11, and an area illuminated by the ambient illumination light 11 at the position of the distance L1 is shown as an illumination area B12. . In FIG. 8B, the area illuminated by the central illumination light 12 at the position of the distance L0 is indicated by the illumination area A11, and the area illuminated by the central illumination light 12 at the position of the distance L1 is indicated by the illumination area A12. Has been. In FIG. 8A, the peripheral illumination light distribution control unit 6a is disposed on the inner side, and the central illumination light distribution control unit 6b is disposed on the outer side.

According to FIG. 8A, since the peripheral illumination unit 21 is disposed inside the central illumination unit 22, that is, between the central illumination unit 22 and the video projection unit 7, the illumination regions A11 and B11, the illumination region A12 and B12 cross each other. Moreover, in the area where the illumination light intersects, as shown in FIG. 8B, the illuminance is increased as compared with the other areas. Further, when the distance in the optical axis direction of the light source 5 from the light source substrate 51 changes from L0 to L1, the position at which the illuminance increases as compared to the illuminance distribution shape at the distance L0 changes.

In this way, when the positions of the peripheral illumination unit 21 and the central illumination unit 22 are switched, the shape of the illuminance distribution is affected by the illumination distance, so that depending on the assumed illumination distance so that the desired illuminance distribution shape can be obtained. Thus, the shape of the light distribution control unit 6 may be changed as appropriate. For example, the shape of the central illumination light distribution controller 6b is changed so that the central illumination light 12 further illuminates the inside. Alternatively, the shape of the ambient illumination light distribution controller 6a is changed so that the ambient illumination light 11 further illuminates the outside. Moreover, the change of the shape of the peripheral illumination light distribution control unit 6a and the change of the shape of the central illumination light distribution control unit 6b may be combined. Thereby, as shown in FIG. 8, the surrounding illumination part 21 can also be arrange | positioned inside the center illumination part 22. FIG.

7 and 8, the boundary between the light beams from each light source 5 is described in a clear manner. However, in order to obtain a smooth illuminance distribution by connecting the light beams from each light source 5, the boundary between the light beams is It may be a light distribution that attenuates from the center toward the periphery. Even in such a case, if the angle at which the light beams intersect is reduced, an illuminance distribution shape in which the influence of the illumination distance is suppressed can be obtained.

The video projection unit 7 projects a video according to the video signal output from the control unit. The video projection unit 7 includes an illumination system for video projection and a projection system inside. The projection system projects an image by emitting image light 4 corresponding to the image signal toward the image projection area 12a. The illumination system emits a luminous flux of illumination correction light described later.

For example, an LED or a semiconductor laser is used as the light source of the illumination system of the video projection unit 7. For image modulation in the projection system, for example, DMD (Digital Mirror Device), LCD (Liquid Crystal Display) or the like is used. If necessary, the illumination system for video projection may include, for example, a polarization conversion element, an integrator lens such as a light guide, a multi-lens, and the like.

As another video projection method, a video may be projected by performing laser scanning in combination with a laser light source and a two-axis MEMS (Micro Electro Mechanical Systems) mirror.

The camera 8 shoots the object in the video projection area 12a and its surrounding area, and generates a captured image of the object. Then, the camera 8 outputs the generated captured image to the control unit 110, for example. The captured image generated by the camera 8 is used, for example, for acquiring luminance information such as the peripheral illumination light 11 that illuminates the video peripheral region 11a and the luminance of the video projected on the video projection region 12a. The captured image is used to acquire operation signals related to operations related to changes in various settings such as illumination intensity of illumination light, operations related to switching to a video playback mode and illumination mode, which will be described later, and other operations related to the video projection illumination device 1. Also used for. The operation signal acquisition method will be described later.

And the control part 110 acquires the operation signal regarding operation of the video projection illumination apparatus 1 based on the captured image output from the camera 8. FIG. For example, the control unit 110 detects the operation of an object such as a user's hand or finger or a pointing stick from a plurality of captured images, and acquires the operation signal by analyzing the detected operation. Specifically, for example, the control unit 110 reads a pattern for extracting the shape of the target object stored in advance in the data storage unit 102, and extracts the shape and position of the target object by pattern matching. The control unit 110 detects the operation of the user's hand, finger, etc. by performing such processing on each captured image. And the control part 110 controls each part of the video projection illumination apparatus 1 based on the acquired operation signal.

The angle of view of the camera 8 is wider than the image projection angle of view by the image projection unit 7, and is set so that, for example, the entire image projection area 12a can be imaged. Further, it is desirable that the angle of view of the camera 8 is set so that a region further outside the video peripheral region 11a illuminated with the peripheral illumination light 11 shown in FIG.

It is desirable that the camera 8 has an optical performance capable of focusing at an arbitrary position between the video projection illumination device 1 and the video projection area 12a. The camera 8 may have an autofocus function. According to this configuration, it is possible to acquire information such as the brightness of the projected video that is affected by, for example, illumination light, the color or material of the projection destination (video projection area 12a), etc., in the entire projectable range of the video. It becomes. Specifically, by comparing the color and brightness of the assumed video signal at a certain position with the color and brightness of the projection destination obtained from the image captured by the camera 8, the optical destination of the projection destination is compared. Feature quantities can be extracted. By analyzing and calculating this feature amount, for example, by the control unit 110 or the like, it is possible to correct the projected video so that the intended video is displayed. Thus, in the video projection illumination device 1, the projected video is automatically adjusted.

In addition to the camera 8, the video projection lighting device 1 may acquire an operation signal based on the distance of the user's hand or finger measured by, for example, the TOF (Time Of Flight) method. Further, the video projection lighting device 1 may acquire an operation signal from a remote controller, a touch panel, an input button, or the like. Moreover, the video projection illumination device 1 may acquire an operation signal based on audio information input from a microphone (not shown).

The environment sensor 9 acquires environmental information such as the ambient environment of the video projection lighting device 1, for example, brightness and ambient color. The environment sensor 9 outputs the acquired environment information to, for example, the environment sensing unit 100 shown in FIG. The acquired environment information is used, for example, when calculating a video correction parameter for correcting the projected video. The video correction parameters will be described later. The environment sensor 9 may be connected to the control unit 110 and output the acquired environment information to the control unit 110, for example. In this case, the control unit 110 calculates the video correction parameters described above.

The housing 10 accommodates each part shown in FIG. 1 and FIG. The shape of the housing 10 may be, for example, a truncated cone or cylinder in which the inside is hollow and the emission side of the peripheral illumination light 11, the central illumination light 12, and the image light 4 is opened, as shown in FIG. For example, a pyramid such as a quadrangular frustum or a hexagonal frustum having an opening on the output side may be used.

The power source 107 supplies power to each part of the video projection lighting device 1. The power source 107 may acquire power through an outlet, for example, or may be configured with a battery, for example.

The environment sensing unit 100 corrects the projected image based on the environment information acquired by the environment sensor 9. For example, the environment sensing unit 100 adjusts the brightness, color, etc. of the projection video based on information such as ambient brightness and color included in the environment information so that the influence of the ambient light on the brightness and color of the projection video can be suppressed. It has a video correction function to correct. Specifically, the environment sensing unit 100 calculates a video correction parameter for correcting the video so as to obtain a desired brightness and color based on the environmental information acquired by the environmental sensor 9. Alternatively, the environment sensing unit 100 may read a predetermined video correction parameter based on the environment information from the data storage unit 102 shown in FIG. The environment sensing unit 100 outputs the calculated or read image correction parameters to the control unit 110.

The environment sensing unit 100 may be provided in the control unit 110 described later. In this case, the environmental sensor 9 is connected to the control unit 110, and the acquired environmental information is output from the environmental sensor 9 to the control unit 110.

The operation input unit 101 includes, for example, an operation signal receiving unit transmitted from a remote controller, a touch panel, an input button, and the like. For example, an operation signal from a user is directly input to a touch panel, an input button, and the like. The operation input unit 101 includes, for example, the camera 8 and the control unit 110. The camera 8 and the control unit 110 acquire an operation signal based on the motion of the object, and each unit of the video projection illumination device 1 is controlled based on the acquired operation signal.

The data storage unit 102 is composed of, for example, a non-volatile memory, and stores various data related to the video projection illumination device 1. The data storage unit 102 stores, for example, a program for operating the video projection illumination device 1, various setting information, various parameters related to the ambient illumination light 11, the central illumination light 12, the image light 4, image correction parameters, and the like. The parameters stored in the data storage unit 102 include, for example, data indicating the relationship between the brightness and current of the ambient illumination light 11 and the ambient illumination light 11 and the central illumination light 12 that are set at the time of shipping work. Data indicating the relationship between the environmental information and the brightness of the illumination light.

The video receiving unit 103 is connected to, for example, an external device (not shown), and receives a video signal related to a video to be projected to the video projecting unit 12a from the external device. The video signal here includes, for example, content linked to a smartphone, content stored in an external memory, content obtainable from the Internet, and the like. The video reception unit 103 may be connected to an external device by wire, or may be connected to the external device wirelessly, for example, by short-range wireless. The video receiving unit 103 includes a data reading unit of an external memory such as an SD card, a CD (Compact Disc), a DVD (Digital Versatile Disc), and the like, and reads the video signal stored in the external memory. Also good. The video receiving unit 103 outputs the received or read video signal to the control unit 110. The video receiving unit 103 may output the video signal to the data storage unit 102 and store the video signal in the data storage unit 102.

The control unit 110 includes an illumination video management unit 106, an illumination control unit 104, and a video control unit 105, as shown in FIG.

The control unit 110 controls, for example, the peripheral illumination unit 21, the central illumination unit 22, the video projection unit 7, and the like. For example, the illumination video management unit 106 performs predetermined illumination control signals and video control based on various information output from the environment sensing unit 100, the operation input unit 101, the video reception unit 103, parameters read from the data storage unit 102, and the like. Generate a signal. In addition, the illumination video management unit 106 outputs the generated illumination control signal to the illumination control unit 104, and outputs the generated video control signal to the video control signal 105.

Based on the illumination control signal output from the illumination video management unit 106, the illumination control unit 104 switches on / off the light emission of the peripheral illumination unit 21 and the central illumination unit 22, and sets the light emission intensity, the light emission color, and the like. Do.

Based on the video control signal output from the illumination video management unit 106 and the video signal output from the video reception unit 103, the video control unit 105 switches on / off of video projection by the video projection unit 7, 4 modulation or the like is performed. For example, the video control unit 105 corrects the brightness, color, and the like of the projected video based on the video correction parameter output from the environment sensing unit 100. Thus, since the brightness and color of the projected video are corrected according to the surrounding environment, the video projection illumination device 1 capable of projecting a desired video even under different environmental light conditions is provided. The

Further, the control unit 110 calculates a video correction parameter based on the environment information output from the environment sensor 9. For example, the illumination video management unit 106 calculates video correction parameters based on the environment information. Alternatively, the illumination video management unit 106 may read video correction parameters based on the environment information from the data storage unit 102.

Further, the control unit 110 switches the operation mode of the video projection lighting device 1 to a menu display mode, a lighting mode, and a video playback mode, which will be described later. Here, each operation mode will be described.
[Menu display mode]

First, the menu display mode is a mode that accepts menu selection by the user. In the menu display mode, for example, a menu video for selecting the operation mode is projected onto the video projection area 12 a, and the video peripheral area 11 a is illuminated with the peripheral illumination light 11. In the menu display mode, it is only necessary to project a menu video, and the video peripheral area 11 a may not be illuminated by the peripheral illumination light 11. Further, the central illumination unit 22 does not illuminate the video projection area 12a.

In the menu display mode, the control unit 110 reads, for example, image data related to the menu video from the data storage unit 102, and generates a video control signal based on the read image data or the like. For example, the control unit 110 generates an illumination control signal such that the ambient illumination light 11 is emitted from the ambient illumination unit 21 and the central illumination light 12 is not emitted from the central illumination unit 22. Then, the video projection unit 7 emits video light 4 related to the menu video based on the generated video control signal. The ambient illumination unit 21 emits ambient illumination light 11 based on the generated illumination control signal, and the central illumination unit 22 does not emit central illumination light 12 based on the generated illumination control signal.

The menu video may include not only a video relating to the selection of the illumination mode and the video reproduction mode, but also a video relating to various settings of the video projection lighting device 1, for example.
[Lighting mode]

Next, the illumination mode (second mode) will be described. The illumination mode is a mode in which emission of the ambient illumination light 11 by the ambient illumination unit 21 and emission of the central illumination light 12 by the central illumination unit 22 are simultaneously performed based on the operation signal received by the operation input unit 101. In the illumination mode, the video projection unit 7 does not perform video projection.

In the illumination mode, for example, the control unit 110 generates an illumination control signal that causes the ambient illumination unit 21 to emit the ambient illumination light 11 and causes the central illumination unit 22 to emit the central illumination light 12. For example, the control unit 110 generates a video control signal that prevents the video light 4 from being emitted from the video projection unit 7. Then, the ambient illumination unit 21 and the central illumination unit 22 emit the ambient illumination light 11 and the central illumination light 12 based on the generated illumination control signal. Further, the video projection unit 7 does not emit the video light 4 based on the generated video control signal.
[Video playback mode]

Next, the video playback mode (first mode) will be described. The video reproduction mode is a mode in which emission of the ambient illumination light 11 by the ambient illumination unit 21 and projection of an image by the video projection unit 7 are simultaneously performed based on the operation signal received by the operation input unit 101. In the video playback mode, the central illumination unit 22 does not emit the central illumination light 12.

In the video reproduction mode, for example, the control unit 110 generates an illumination control signal such that the ambient illumination unit 11 emits the ambient illumination light 11 and the central illumination unit 22 does not emit the central illumination light 12. For example, the control unit 110 generates a video control signal for emitting the video light 4 related to a predetermined video from the video projection unit 7. Then, the ambient illumination unit 21 emits ambient illumination light 11 based on the generated illumination control signal. The video projection unit 7 emits video light 4 based on the generated video control signal. The central illumination unit 22 does not emit the central illumination light 12 based on the generated illumination control signal.

<How to use the video projection lighting device>
Next, a method for using the video projection illumination device will be described. FIG. 9 is a flowchart showing an example of a method of using the video projection lighting apparatus according to Embodiment 1 of the present invention. In the video projection lighting apparatus 1, for example, as shown in FIG. 9, the respective processes in steps S10 to S90 are executed.

First, in step S10, the user operates the power supply 107 to turn on the video projection lighting apparatus 1. Then, the environmental sensor 9 acquires environmental information of the surrounding environment of the video projection lighting device 1. Then, the environmental sensor 9 outputs the acquired environmental information to the control unit 110, for example.

In step S <b> 20, the control unit 110 (for example, the illumination video management unit 106) reads out the video correction parameter based on the environmental information output from the environmental sensor 9 from the data storage unit 102.

In step S30, the illumination image management unit 106 generates an illumination control signal for emitting the ambient illumination light 11 based on the read image correction parameter. Then, the illumination video management unit 106 outputs the generated illumination control signal to the illumination control unit 104. The illumination control unit 104 causes the ambient illumination light 11 to be emitted from the ambient illumination unit 21 based on the output illumination control signal. Thereby, the surrounding illumination part 21 is turned ON.

In step S40, the video projection unit 7 projects a menu video onto the video projection area 12a. For example, the illumination video management unit 106 reads image data related to the menu video from the data storage unit 102 and generates a video control signal based on the read image data and the like. The illumination video management unit 106 outputs the generated video control signal to the video control unit 105. Then, the video control unit 105 causes the video projection unit 7 to emit video light 4 related to the menu video based on the output video control signal. Thereby, the video projection illumination device 1 is set to the menu display mode.

In the menu display mode, the control unit 110 (for example, the illumination video management unit 106) acquires the illuminance information of the ambient illumination light 11, the brightness information of the menu video, and the like based on the captured image generated by the camera 8. Further, the environment sensor 9 may acquire new environment information even after the menu video is projected. And the illumination video management part 106 produces | generates a new illumination control signal and a video control signal based on brightness | luminance information and new environmental information after projection of a menu image | video, the illumination intensity of the surrounding illumination light 11, and the brightness | luminance of a menu image | video Adjust etc. The steps S10 to S40 so far complete the standby process after the power is turned on. When the menu display mode is set, the video projection lighting device 1 enters a state of waiting for an operation signal from the user. During this time, for example, the camera 8 detects an operation signal from the user, for example, by photographing an object near the video projection area 12a.

In step S50, the control unit 110 determines the detected operation signal. For example, when the control unit 110 detects an operation signal for switching to the illumination mode, the process of step S60 is performed as illustrated in FIG. On the other hand, when the control unit 110 detects an operation signal for switching to the video reproduction mode, for example, the process of step S70 is performed as shown in FIG. When the control unit 110 detects an operation signal other than these, the operation signal is detected again in step S40 as shown in FIG.

In step S60, the control unit 110 (for example, the illumination video management unit 106) generates an illumination control signal for emitting the central illumination light 12. Then, the illumination video management unit 106 outputs the generated illumination control signal to the illumination control unit 104. The illumination control unit 104 causes the central illumination light 12 to be emitted from the central illumination unit 22 based on the output illumination control signal. Thereby, the central illumination part 22 is turned ON. Therefore, both the surrounding illumination unit 21 and the central illumination unit 22 are turned on, and the operation mode is switched from the menu display mode to the illumination mode. Further, even after switching to the illumination mode, the control unit 110 adjusts the illuminance and the like of the ambient illumination light 11 and the central illumination light 12 based on the luminance information and new environment information. In step S60, the operation signal is continuously detected even after the operation mode is switched to the illumination mode.

In step S70, the control unit 110 (for example, the illumination video management unit 106) generates a video control signal for emitting the video light 4. At this time, for example, the control unit 110 may cause the user to select content from a content selection video that selects a video to be projected, and generate a video control signal based on the selected content or the like. Then, the illumination video management unit 106 outputs the generated illumination control signal to the video control unit 105. The video control unit 105 causes the video light 4 to be emitted from the video projection unit 7 based on the output video control signal. Thereby, an image is projected, and the operation mode is switched from the menu display mode to the image reproduction mode. In addition, even after switching to the video playback mode, the control unit 110 adjusts the illuminance of the ambient illumination light 11, the brightness of the video light 4, and the like based on the brightness information and new environment information. In step S70, the operation signal is continuously detected even after the operation mode is switched to the video reproduction mode.

Next, the case of switching between the illumination mode and the video playback mode will be described. In step S80, control unit 110 determines an operation signal detected during the illumination mode. When the control unit 110 detects an operation signal for switching to the video reproduction mode during the illumination mode, the process of step S70 is performed as shown in FIG.

When the operation mode is switched from the illumination mode to the video reproduction mode, in step S70, the control unit 110 (for example, the illumination video management unit 106) stops the emission of the central illumination light 12, and then the video projection unit. 7 to project a predetermined image. For example, the illumination video management unit 106 generates an illumination control signal for stopping the emission of the central illumination light 11. The illumination control unit 104 stops the emission of the central illumination light 12 from the central illumination unit 22 based on the generated illumination control signal. Thereby, the central illumination part 22 is turned off. And the control part 110 implements the process etc. which radiate | emit the image light 4 mentioned above.

In step S80, when it is determined that the operation signal for ending the illumination mode is detected, the control unit 110 performs a process of stopping the emission of the central illumination light 12. In this way, when the central portion 22 is turned off, the illumination mode ends as shown in FIG. If the control unit 110 determines that an operation signal other than these has been detected, the illumination mode is continued as shown in FIG.

In step S90, the control unit 110 determines an operation signal detected during the video playback mode. When the control unit 110 detects an operation signal for switching to the illumination mode during the video reproduction mode, the process of step S60 is performed as shown in FIG.

When the operation mode is switched from the video playback mode to the illumination mode, in step S90, the control unit 110 (for example, the illumination video management unit 106) stops the emission of the video light 4, and then the central illumination light 12 is stopped. Is emitted. For example, the illumination video management unit 106 generates a video control signal for stopping the emission of the video light 4. The video control unit 105 stops the emission of the video light 4 from the video projection unit 7 based on the generated video control signal. Thereby, video projection is turned off. And the control part 110 implements the process etc. which radiate | emit the central illumination light 12 mentioned above.

In step S90, when it is determined that the operation signal for ending the video reproduction mode is detected, the control unit 110 performs a process of stopping the emission of the video light 4. In this way, when the video projection is turned off, the video playback mode ends as shown in FIG. If the control unit 110 determines that an operation signal other than these has been detected, the video playback mode is continued as shown in FIG.

Although not shown in FIG. 9, the control unit 110 detects a predetermined operation signal such as an object such as a user's hand or finger crossing the front of the camera 8 in the illumination mode or the video playback mode. In this case, the operation mode may be switched to the menu display mode. In this way, the menu video can be displayed at an arbitrary timing and switched to the menu display mode. In order to return to the menu display mode, the function of the operation input unit 101 other than the camera 8 may be used, as long as the operation input unit 101 can detect the operation of the user. Moreover, the flowchart shown in FIG. 9 is an example of a method of using the video projection illumination device, and various modifications may be added depending on the situation.
<Effects of this embodiment>

According to the present embodiment, the video projection illumination device 1 includes the video projection unit 7 that projects a video on the video projection region 12 a and the peripheral illumination unit 21 that illuminates the video peripheral region 11 a surrounding the video projection region 12. ing.

According to this configuration, since the projection image 14 and the ambient illumination light 11 do not overlap with each other, the image projection illumination device 1 that illuminates the periphery of the projection image 14 while suppressing deterioration in image quality of the projection image 14 is provided.

In addition, according to the present embodiment, the central illumination unit 22 that illuminates the video projection region 12a is provided. According to this configuration, since the ambient illumination light 11 and the central illumination light 12 can be emitted simultaneously, the video projection illumination device 1 in which the illuminance of the illumination light is further improved is provided.

Further, according to the present embodiment, the light distribution control unit 6 is provided in the peripheral illumination unit 21 and the central illumination unit 22. According to this configuration, since the luminous fluxes of the peripheral illumination light 11 and the central illumination light 12 are controlled to be distributed, the video projection illumination device 1 that further improves the accuracy of the emission direction of the peripheral illumination light 11 and the central illumination light 12 is provided. Provided.

Further, according to the present embodiment, the control unit 110 adjusts the illuminance of the ambient illumination light 11 based on the environmental information acquired by the environmental sensor 9. According to this configuration, the ambient illumination light 11 can be adjusted to the surrounding environment, so that the video projection illumination device 1 with improved versatility is provided.

Further, according to the present embodiment, the control unit 110 adjusts the brightness of the projected video 14 based on the environmental information acquired by the environmental sensor 9. According to this configuration, the projection video 14 can be corrected in accordance with the surrounding environment, so that the video projection illumination device 1 with improved versatility is provided.

Further, according to the present embodiment, the light source substrate 51 is made of a material excellent in heat dissipation. Generally, when the temperature of the light source 5 rises, the light emission efficiency is lowered. However, if the light source substrate 51 having excellent heat dissipation is used, the temperature rise of the light source 5 can be suppressed. Provided. Thereby, the continuous use time can be extended, and the video projection illumination device 1 excellent in versatility is provided.

Further, according to the present embodiment, the operation input unit 101 that receives an operation signal from the user is provided, and the video projection mode and the illumination mode are switched based on the operation signal. According to this configuration, since the projection image 14 and the central illumination light 12 are switched, the image projection illumination device 1 is provided in which the usage environment is expanded and the versatility is improved.

Further, according to the present embodiment, the operation signal is detected based on the captured image generated by the camera 8. According to this configuration, the user can operate the video projection lighting apparatus 1 without touching the apparatus main body, so that the video projection lighting apparatus 1 excellent in handling is provided.

(Embodiment 2)
Next, a second embodiment of the present invention will be described. In the following description, in principle, the description of the same parts as those in the first embodiment will be omitted. In the present embodiment, a combination of the shape of the video projection area 12a and the shape of the video peripheral area 11a illuminated by the peripheral illumination light 11 will be described. FIG. 10 is a diagram showing an example of a combination of the shape of the video projection area and the shape of the video peripheral area according to Embodiment 2 of the present invention. In FIG. 10, the boundary between the video peripheral area 11a and the video projection area 12a is clearly shown, but the boundary is blurred as necessary, and the illuminance between the video peripheral area 11a and the video projection area 12a is increased. The ambient illumination light 11 may be subjected to light distribution control so as to change smoothly. For example, the ambient illumination light 11 may be subjected to light distribution control so that the illuminance is smoothly attenuated toward the video projection region 12a. In addition, no outline or boundary may be formed outside the video peripheral area 11a. For example, the light distribution control may be performed so that the ambient illumination light 11 illuminates a wide area up to a wall or a ceiling. In FIG. 10, the display range of the projected image 14 is indicated by a dotted rectangle. As shown in FIG. 10, since the projected image 14 and the image peripheral area 11a do not overlap, it is possible to provide a bright viewing environment while displaying the image with high contrast. As a result, the user can freely act even while viewing the video.

FIG. 10A shows a combination in which the outer contour of the video peripheral region 11a is circular in plan view, and the contour of the video projection region 12a, that is, the inner contour of the video peripheral region 11a is circular in plan view. . FIG. 10B shows a combination in which the outer contour of the video peripheral region 11a is elliptical in plan view, and the contour of the video projection region 12a, that is, the inner contour of the video peripheral region is circular in plan view. . FIG. 10C shows a combination in which the outer contour of the video peripheral area 11a is rectangular in plan view, and the contour of the video projection area 12a, that is, the inner contour of the video peripheral area is circular in plan view. FIG. 10D shows a combination in which the outer contour of the video peripheral region 11a is circular in plan view, and the contour of the video projection region 12a, that is, the inner contour of the video peripheral region is elliptical in plan view. . FIG. 10E shows a combination in which the outer contour of the video peripheral region 11a is elliptical in plan view, and the contour of the video projection region 12a, that is, the inner contour of the video peripheral region is elliptical in plan view. Yes. FIG. 10F shows a combination in which the outer contour of the video peripheral area 11a is rectangular in plan view, and the contour of the video projection area 12a, that is, the inner contour of the video peripheral area is elliptical in plan view. Yes. FIG. 10G shows a combination in which the outer contour of the video peripheral region 11a is circular in plan view, and the contour of the video projection region 12a, that is, the inner contour of the video peripheral region is rectangular in plan view. FIG. 10H shows a combination in which the outer contour of the video peripheral area 11a is elliptical in plan view, and the contour of the video projection area 12a, that is, the inner contour of the video peripheral area is rectangular in plan view. . FIG. 10I shows a combination of the outer contour of the video peripheral area 11a being rectangular in plan view and the contour of the video projection area 12a, that is, the inner contour of the video peripheral area being rectangular in plan view.

First, the outer contour of the video peripheral area 11a will be described. As shown in FIGS. 10 (a), 10 (d), and 10 (g), when the outer contour of the image peripheral area 11a is circular, the image projection illumination device 1 emits illumination light in a circular shape. It is possible to give the user the same impression as a general lighting fixture.

10B, FIG. 10E, and FIG. 10H, when the outer contour of the video peripheral area 11a is an ellipse, the projection video 14 and the video peripheral area 11 are illustrated. Since the shape expands in the horizontal direction, the shape of the projected image and the shape of the ambient illumination light 11 can be balanced while giving the user an impression similar to that of a general lighting fixture.

10C, FIG. 10F, and FIG. 10I, when the outer contour of the video peripheral area 11a is rectangular, for example, a plurality of video projection illumination devices 1 are linked. And the boundary of adjacent video peripheral areas 11a are combined without excess or deficiency. Thereby, the some video projection illuminating device 1 functions as a larger illuminating device or a video projection device. Note that, in the vicinity of the boundary of the video peripheral area 11a, the illuminance distribution of the peripheral illumination light 11 may be attenuated smoothly toward the outside, and the adjacent video peripheral areas 11a may be overlapped. As a result, the boundary between adjacent video peripheral areas 11a becomes inconspicuous.

Next, the inner contour of the image peripheral area 11a will be described. As shown in FIG. 10A, FIG. 10B, and FIG. 10C, when the inner contour of the video peripheral area 11a is circular, the contour shape of the video projection area 12a has symmetry. Regardless of the orientation of the video projection lighting device 1, it is possible to project a video without giving the user a sense of incongruity.

10D, FIG. 10E, and FIG. 10F, when the inner contour of the video peripheral area 11a is an ellipse, the rectangular projected video 14 and the video peripheral area 11a It is possible to balance the aspect ratio between the two. For example, when the aspect ratio of the projected video 14 is 16: 9, the distance between the projected video 14 and the boundary of the video projection region 12a is 16: 9 if the ratio of the horizontal direction to the vertical direction of the video projection region 12a is 16: 9. Therefore, the user can be given an impression that the projected image 14 and the ambient illumination 11 are balanced.

Also, as shown in FIGS. 10 (g), 10 (h) and 10 (i), when the inner contour of the video peripheral area 11a is rectangular, a rectangular projected video 14 is displayed in the video projection area 12a. In this case, the projection image 14 and the ambient illumination 11 can be balanced. In particular, as shown in FIG. 10 (i), when the inner contours of the projected video 14 and the video peripheral area 11a are both rectangular, the area between the projected video 14 and the video peripheral area 11a is a so-called frame. A design is provided. Further, if the projection video 14 is displayed over the entire projection video area 12a, it is possible to illuminate the periphery without any gap while a high contrast video is projected over the entire video projection area 12a.

The brightness of the ambient illumination light 11 may be equal to the brightness of the image light 4. With such an illumination method, it is possible to suppress the difference between the luminance of the image that the user views and the illuminance of the image peripheral area 11a, that is, the illuminance of the background visual field. Thereby, fatigue caused by viewing the projected image 14 for a long time is reduced.

Further, when the video projection lighting device 1 is used in consideration of workability at hand, it is desirable that the illuminance of the peripheral illumination light 11 in the vicinity of the video peripheral region 11a is, for example, 300 lux or more.

Also, a design with a sense of unity may be provided by reducing the interval between the projected image 14 and the inner boundary of the image peripheral area 11a. Alternatively, a design that makes the projected video 14 stand out by increasing the interval between the projected video 14 and the inner boundary of the video peripheral area 11a may be provided.

Further, the width from the inner boundary to the outer boundary of the video peripheral area 11a may be wide or narrow. If the image peripheral area 11a is wide, the peripheral illumination light 11 having an impression like a general lighting fixture is provided. On the other hand, if the width of the video peripheral area 11a is narrow, the illuminance of the video peripheral area 11a can be increased even when the amount of light emitted from the light source 5 is constant as compared with the case where the width is wide. Thereby, illuminance can be improved while suppressing power consumption.

Next, a method for differentiating the inner and outer contours of the video peripheral area 11a will be described. Here, a method of making the inner contour of the video peripheral area 11a a rectangle and the outer contour of the video peripheral area 11a circular will be described by taking the case of FIG. 10G as an example. FIG. 11 is a diagram illustrating an example of the configuration of the peripheral illumination unit and the central illumination unit according to Embodiment 2 of the present invention. FIG. 11A is a plan view illustrating an example of the configuration of the peripheral illumination unit 21 and the central illumination unit 22. FIG. 11B is a cross-sectional view illustrating an example of the configuration of the peripheral illumination unit 21 and the central illumination unit 22. FIG. 11C is a diagram illustrating a state of light distribution control in the peripheral illumination unit 21.

The plurality of light sources 5 constituting the peripheral illumination unit 21 are arranged in a rectangular shape on the outer periphery in a plan view viewed from the emission side, for example, as shown in FIG. The ambient illumination light distribution control unit 6a that is the light distribution control unit 6 of the ambient illumination unit 21 is configured such that the curvature decreases as the distance from the video projection unit 7 increases, for example, as illustrated in FIG. . That is, the ambient illumination light distribution control unit 6 a is configured such that the lens effect is strong on the video projection unit 7 side and the lens effect is weak on the side opposite to the video projection unit 7. Thereby, the light flux passing through the peripheral illumination light distribution control unit 6a on the video projection unit 7 side (the central side of the video projection illumination device 1) greatly affects the light distribution control as shown in FIG. 11C, for example. Because it receives, divergence is suppressed. On the other hand, the light flux passing through the peripheral illumination light distribution control unit 6a on the opposite side (outside of the image projection illumination device 1) from the image projection unit 7 side is, for example, as shown in FIG. Since the influence of the control is small, it diverges more than the light flux on the video projection unit 7 side. Therefore, the inner contour of the video peripheral area 11 a has a shape close to a rectangular shape according to the arrangement of the light sources 5. On the other hand, the outer contour of the video peripheral area 11a has a shape close to the light distribution that the light source 5 has. That is, the outer contour of the video peripheral area 11a has a shape close to a circle.

According to this configuration, there is provided the peripheral illumination unit 21 that can illuminate the light source 5 for one row with the inner contour shape and the outer contour shape of the image peripheral region 11a different from each other. The In addition, according to this configuration, it is possible to make the shape of the outer contour of the image peripheral area 11a nearly circular regardless of the arrangement shape of the light source 5.

As for the central illumination unit 22, as shown in FIG. 11B, for example, the lens is arranged so that the central illumination light distribution control unit 6b of the light distribution control unit 6 suppresses the divergence of the luminous flux of the light source 5 on the inner periphery. It may be configured to have an effect. FIG. 11 shows an example of a method for differentiating the inner contour and the outer contour of the image peripheral area 11a. For example, the curvature of the peripheral illumination light distribution control unit 6a and the central illumination light distribution control unit 6b The desired illuminance distribution shape can be obtained by appropriately changing the positional relationship between the light source 5 and the ambient illumination light distribution control unit 6a and the central illumination light distribution control unit 6b.

(Embodiment 3)
Next, a third embodiment of the present invention will be described. In the following description, in principle, the description of the same parts as those in the first and second embodiments will be omitted. In the present embodiment, a case will be described in which video control is performed by linking the projection video 14 and the ambient illumination light 11 together. FIG. 12 is a diagram illustrating an example of a combination of a projected image and ambient illumination light according to Embodiment 3 of the present invention. For example, as shown in FIG. 12, the projected video 14 is projected over the video projection area 12a and the video peripheral area 11a. Thereby, since the peripheral part of the projection video 14 overlaps with the video peripheral area 11a, the video control is performed in cooperation with the projection video 14 and the peripheral illumination light 11.

In FIG. 12, the boundary between the video peripheral area 11a and the video projection area 12a is clearly shown. However, the boundary between the video peripheral area 11a and the video projection area 12a is blurred as necessary. The ambient illumination light 11 may be subjected to light distribution control so as to change smoothly. For example, the light distribution control may be performed so that the ambient illumination light 11 is attenuated smoothly toward the video projection region 12a. In addition, no outline or boundary may be formed outside the video peripheral area 11a. For example, the light distribution control may be performed so that the ambient illumination light 11 illuminates a wide area up to a wall or a ceiling. In FIG. 12, the projected image 14 is shown as a horizontally long rectangle, but may be a circle, an ellipse, or the like.

FIG. 12A shows a combination in which the outer contour of the video peripheral region 11a is circular in plan view, and the contour of the video projection region 12a, that is, the inner contour of the video peripheral region 11a is circular in plan view. . FIG. 12B shows a combination in which the outer contour of the video peripheral region 11a is elliptical in plan view, and the contour of the video projection region 12a, that is, the inner contour of the video peripheral region is circular in plan view. . FIG. 12C shows a combination in which the outer contour of the video peripheral region 11a is rectangular in plan view, and the contour of the video projection region 12a, that is, the inner contour of the video peripheral region 11a is circular in plan view. . FIG. 12D shows a combination in which the outer contour of the video peripheral region 11a is circular in plan view, and the contour of the video projection region 12a, that is, the inner contour of the video peripheral region is elliptical in plan view. . FIG. 12E shows a combination in which the outer contour of the video peripheral region 11a is elliptical in plan view, and the contour of the video projection region 12a, that is, the inner contour of the video peripheral region is elliptical in plan view. Yes. FIG. 12F shows a combination in which the outer contour of the video peripheral region 11a is rectangular in plan view, and the contour of the video projection region 12a, that is, the inner contour of the video peripheral region is elliptical in plan view. . FIG. 12G shows a combination in which the outer contour of the video peripheral region 11a is circular in plan view, and the contour of the video projection region 12a, that is, the inner contour of the video peripheral region is rectangular in plan view. FIG. 12H shows a combination in which the outer contour of the video peripheral area 11a is elliptical in plan view, and the contour of the video projection area 12a, that is, the inner contour of the video peripheral area is rectangular in plan view. . FIG. 12 (i) shows a combination of the outer contour of the video peripheral area 11a being rectangular in plan view and the contour of the video projection area 12a, that is, the inner contour of the video peripheral area being rectangular in plan view.

According to these configurations, the contrast of the projected video does not deteriorate inside the video projection area 12a, and the peripheral edge of the projected video 14 and the peripheral illumination light 11 overlap in the video peripheral area 11a. By this cooperative control, a video projection device 10 capable of integrating illumination and video is provided.

First, as shown in FIG. 12A, FIG. 12B, and FIG. 12C, when the inner contour of the video peripheral area 11a is circular, the circular video projection area 12a High contrast is maintained. Therefore, in this case, for example, it is preferable to project a circular image. As a result, the width of the ring-shaped region where the projected image 14 and the ambient illumination light 11 overlap is substantially constant over the entire circumference, so that the balance between the high-contrast region and the low-contrast region can be made substantially constant. It becomes possible. Therefore, in an area where the projection video 14 and the ambient illumination light 11 overlap, an expression in which the ambient illumination light 11 and the projection video 14 are integrated by video control becomes possible.

In addition, as shown in FIGS. 12D, 12E, and 12F, when the inner contour of the video peripheral area 11a is an ellipse, the aspect ratio of the rectangular projected video 14 and the projection It becomes possible to balance the aspect ratio of the region where the image 14 and the ambient illumination light 11 overlap. For example, when the aspect ratio of the projected video 14 is 16: 9, if the ratio of the horizontal direction and the vertical direction of the video projection region 12a is 16: 9, the periphery of the projected video 14 and the boundary between the video projection region 12a and Therefore, the user can have an impression that the high-contrast area and the low-contrast area are balanced.

Also, as shown in FIGS. 12 (g), 12 (h), and 12 (i), when the inner contour of the video peripheral area 11a is rectangular, when the rectangular projected video 14 is displayed, The width of the area overlapping the ambient illumination light 11, that is, the area for controlling the image can be made substantially constant over the entire circumference. For this reason, a design in which the shape of the projected image 14 and the shape of the ambient illumination light 11 are balanced is provided.

Next, as another example of performing video control by linking the projection video 14 and the ambient illumination light 11, a case where auxiliary illumination light is emitted near the boundary between the projection video 14 and the video peripheral area 11 a. explain. FIG. 13 is a diagram illustrating an example of the form of auxiliary illumination light according to the third embodiment of the present invention. FIG. 13A is a diagram illustrating the relationship between the ambient illumination light 11, the image light 4, and the auxiliary illumination light 15. FIG. 13B is a diagram illustrating the illuminance distribution of the ambient illumination light 11, the image light 4, and the auxiliary illumination light 15. FIG. 13C is a diagram illustrating an illuminance distribution obtained by superimposing the ambient illumination light 11, the image light 4, and the auxiliary illumination light 15. In FIG. 13A, the image light 4 and the auxiliary illumination light 15 are indicated by broken lines, and the ambient illumination light 11 is indicated by a solid line. In FIG. 13B, the illuminance distribution by the image light 4 and the auxiliary illumination light 15 is indicated by a broken line, the shaded portion is the illuminance distribution by the image light 4, and the other is the illuminance distribution by the auxiliary illumination light 15. . In FIG. 13B, the illuminance distribution of the ambient illumination light 11 is indicated by a solid line. Depending on the optical characteristics of the projection destination and the viewing direction of the user, the shape of the illuminance distribution may be read as the shape of the luminance distribution.

The auxiliary illumination light 15 adjusts the luminance of the video projected on the video projection area 12a and the illuminance of the video peripheral area 11a. For example, as shown in FIG. 13A, the video projection unit 7 emits a light beam that is a combination of arbitrary video light 4 and illumination correction light 15. For example, as shown in FIG. 13B, the video projection unit 7 illuminates correction light that cancels the attenuation of the area illumination light 11 with respect to a region where the illuminance attenuates inward (projected video 14 side). 15 is emitted together with the image light 4. Then, as shown in FIG. 13C, a substantially uniform illuminance distribution is obtained from the image light 4 toward the ambient illumination light 11.

According to this embodiment, since the difference in illuminance between the image light 4 and the ambient illumination light 11 is suppressed, the ambient illumination light 11 and the projection image 14 are integrated, and an image is projected into the ambient illumination light 11. It is possible to express the image as if it were.

FIG. 14 is a diagram showing other examples relating to video control using auxiliary illumination light according to Embodiment 3 of the present invention. FIG. 14A shows the respective illuminance distributions when the ambient illumination light 11 and the image light 4 are separated from each other and the auxiliary illumination light 15 is smoothly attenuated from the ambient illumination light 11 toward the image light 4. Has been. FIG. 14B shows an illuminance distribution in which the peripheral illumination light 11, the image light 4, and the auxiliary illumination light 15 in FIG.

According to such an illuminance distribution, as shown in FIG. 14B, the illuminance distribution when the ambient illumination light 11 and the illumination correction light 15 are superimposed is attenuated substantially exponentially toward the center. ing. In general, since how the human eye perceives brightness follows a logarithm, as shown in FIG. 14 (b), if the illuminance attenuates exponentially, the illuminance decreases smoothly. felt. Therefore, it is possible to project the peripheral illumination light 11 having an illuminance distribution that naturally decreases smoothly and an arbitrary image with high contrast.

In FIG. 14C, the ambient illumination light 11 and the image light 4 are separated from each other, the image light 4 is smoothly attenuated toward the periphery (toward the ambient illumination light 11), and the auxiliary illumination light 15 is ambient illumination. Each illuminance distribution in the case where the light 11 smoothly attenuates toward the image light 4 is shown. FIG. 14D shows an illuminance distribution obtained by superimposing the peripheral illumination light 11, the image light 4, and the auxiliary illumination light 15 in FIG.

According to such an illuminance distribution, an image is provided in which the ambient illumination light 11 is once darkened toward the center, and the image fades in from the darkened area toward the center.

In FIG. 14E, the ambient illumination light 11 and the image light 4 overlap at the peripheral edge of the projection image 14, the image light 4 is smoothly attenuated toward the ambient illumination light 4, and the auxiliary illumination light 15 is the image light 4. Each illuminance distribution is shown in the case where the sound attenuates smoothly toward the center side. FIG. 14F shows an illuminance distribution obtained by superimposing the peripheral illumination light 11, the image light 4, and the auxiliary illumination light 15 in FIG.

According to such an illuminance distribution, the image is faded in toward the center from the area where the image is dark so that the image is melted into the ambient illumination light 11 while the ambient illumination light 11 is smoothly darkened toward the center. A video like this will be provided.

FIG. 14G shows the respective illuminance distributions when the ambient illumination light 11 and the image light 4 overlap at the peripheral edge of the projection image 14 and the image light 4 is strong in the overlapping region. Yes. In FIG. 14G, the auxiliary illumination light 15 is not emitted. FIG. 14H shows an illuminance distribution obtained by superimposing the ambient illumination light 11 and the image light 4 in FIG.

According to such an illuminance distribution, an image in a region overlapping with the ambient illumination light 11 is emphasized, so that a decrease in contrast and a color shift due to the ambient illumination light 11 can be suppressed.

(Embodiment 4)
Next, a fourth embodiment of the present invention will be described. In the following description, in principle, the description of the same parts as those in the first to third embodiments will be omitted. In this embodiment, an example of light distribution control of ambient illumination light will be described. FIG. 15 is a diagram illustrating an example of a video projection illumination device according to Embodiment 4 of the present invention. FIG. 15A is a perspective view of the video projection illumination device, and FIG. 15B is a cross-sectional view of the video projection illumination device. In FIG. 15B, a cross-sectional shape in the vicinity of the light source 405 is shown, and the positional relationship between the light source 405 and the video projection unit 7 is shown. In addition, in FIG.15 (b), the center illumination part 6 shown in FIG.1 (b) is abbreviate | omitted.

The video projection lighting device 401 includes a housing 410. The housing 410 is configured in a truncated pyramid shape such as a hexagonal truncated cone as shown in FIG. In addition, the housing | casing 410 may be comprised by the cylinder and the truncated cone shape, for example. A light source 405 is provided on the side wall 451 of the housing 410. Specifically, the light source 405 is disposed on the outer surface of the housing 410 as shown in FIGS. 15A and 15B, for example. Therefore, the light beam of the light source 405 is emitted toward the outside of the housing 410. For example, the side wall 451 of the housing 410 may be made of the same material as the light source substrate 51 shown in FIG. In this case, the side wall 451 also functions as a light source substrate for the light source 405. Further, in the example of FIG. 15, the light source 405 is not provided with a light distribution control unit, and a plurality of light sources 405 constitute the ambient illumination unit 421.

The light source 405 is configured by, for example, an LED that emits Lambertian light, as in the light source 5 shown in FIG. A light source that emits Lambert light has the property of emitting the strongest light in the normal direction of the emission surface and emitting the weakest light in the direction parallel to the light emission surface. By utilizing this property, it is possible to prevent the ambient illumination light 11 from being emitted to the video projection region 12a by adjusting the angle of the light emitting surface of the light source 5. For example, as shown in FIG. 15B, if the angle of the light emitting surface of the light source 405 is adjusted to be parallel to the irradiation angle of the video light 4 by the video projection unit 7, the video light 4 and the ambient illumination light A light distribution that does not overlap with 411 is realized.

According to this configuration, the peripheral illumination unit 421 can illuminate not only the periphery of the projected image but also the wall and ceiling around the image projection illumination device 401 over a wide range.

(Embodiment 5)
Next, a fifth embodiment of the present invention will be described. In the following description, in principle, the description of the same parts as those in the first to fourth embodiments will be omitted. In the present embodiment, a modification of the light distribution control unit 6 shown in FIG. 1 will be described. FIG. 16: is sectional drawing which shows the modification of the light distribution control part which concerns on Embodiment 5 of this invention. FIG. 16A shows an ambient illumination light distribution control unit in which a concave portion is provided on the incident surface. In this configuration, the peripheral illumination light distribution control unit 506a is provided with a recess 516a on the incident surface 6c. The concave portion 516a is provided so as to be within the range of the convex portion 517a of the ambient illumination light distribution control unit 506a in plan view. The recess 516a is configured to surround the emission surface of the light source 5. In addition, the ambient illumination light distribution control unit 506a is provided such that the emission surface of the light source 5 is disposed inside the recess 516a. Further, the concave portion 516a is provided, for example, such that the central axis thereof coincides with the optical axis of the light source 5. The concave portion 516a is provided so that its central axis is on the inner side of the central axis of the convex portion 517a, that is, on the video projection unit 7 side.

According to this configuration, the outgoing light beam incident on the peripheral illumination light distribution control unit 506a is refracted toward the convex portion 517a in the concave portion 516a. Therefore, the peripheral illumination light distribution control unit 506a includes the case where the concave portion 516a is not provided. In comparison, more light flux is collected, and highly efficient light distribution control becomes possible. In addition, since the light exit surface of the light source 5 is provided in the recess 516a, the light beam emitted in the surface direction of the light exit surface is subjected to light distribution control, thereby enabling highly efficient light distribution control.

Further, it is desirable that the concave portion 516a is configured such that a light beam in the surface direction of the emission surface of the light source 5 is incident on the convex portion 517a. According to this configuration, since the luminous flux in the surface direction is also subjected to light distribution control and used as ambient illumination light, more efficient light distribution control can be performed.

In addition, the ambient illumination light distribution control unit 506a may be provided with a diffusion surface or a light shielding surface for preventing stray light in a region other than the concave portion 516a on the incident side or a region other than the convex portion 517a on the emission side. Thereby, generation | occurrence | production of a bright line and a shadow is suppressed in the surrounding illumination light 11, and the high quality surrounding illumination light 11 is provided.

FIG. 16B shows an ambient illumination light distribution control unit using multiple reflections. The ambient illumination light distribution control unit 506b in FIG. 16B is configured to have a larger curvature than the ambient illumination light distribution control unit 6a illustrated in FIG. For this reason, a part of the light beam emitted from the light source 5 causes total reflection twice on the wall surface in the convex portion 517 b and is emitted in the direction opposite to the emission direction of the light source 5. For example, a light beam emitted in a direction perpendicular to the emission surface of the light source 5 is emitted in a direction opposite to the emission direction of the light source 5 due to total reflection in the convex portion 517b.

According to this configuration, the light flux from the light source 5 is emitted toward the rear of the light source 5 by total reflection, so that the ceiling, the wall, or the interior of the appliance in a direction different from the image projection direction is illuminated. . Further, according to this configuration, the light beam is emitted in the direction in which it is desired to emit light strongly without changing the arrangement of the light sources 5. This also reduces the number of parts for changing the direction of the light beam. In addition, according to this configuration, since there are a light beam emitted in the gazette by total reflection and a light beam transmitted and refracted by the convex portion 517b and emitted to the image projection side, various light distributions are realized. .

FIG. 16C shows an ambient illumination light distribution control unit using total reflection. The ambient illumination light distribution control unit 506c in FIG. 16C is made of, for example, a transparent material. In the ambient illumination light distribution control unit 506c, a part of the light beam emitted from the light source 5 is totally reflected by the wall surface 517c and emitted from the wall surface 518c to the outside. For example, the light beam emitted in the direction perpendicular to the emission surface of the light source 5 is reflected by the wall surface 517c and emitted from the wall surface 518c to the outside.

According to this configuration, since the emission direction can be greatly changed as compared with the method using refraction, the ambient illumination light 11 is emitted in a wider range. Further, since the light beam emitted from the light source 5 is totally reflected by the wall surface 517c, light distribution control is performed with higher efficiency than using a reflection film that generally absorbs a part of light.

FIG. 16 (d) shows another example of the ambient illumination light distribution control unit using reflection. The ambient illumination light distribution control unit 506d is composed of a structure having a reflective surface. The ambient illumination light distribution control unit 506d is made of, for example, an opaque and highly rigid metal or resin. In addition, the ambient illumination light distribution control unit 506d may be configured with a reflector 518d and a support 517d that supports the reflector 518d, for example, as illustrated in FIG. The reflector 518d may be made of, for example, a metal that performs specular reflection such as a mirror, a dielectric multilayer film, or the like. Specifically, the reflector 518d may be formed on the support 517d by metal vapor deposition, for example, or may be formed by attaching a reflective film to the support 517d. In addition, the reflector 518d may have a rough surface having diffusibility or a reflective surface for scattering and reflecting as required. The angle at which the emission direction of the light beam is bent can be changed more greatly in reflection than in refraction. When the emission direction of the light beam from the light source 5 is greatly changed, it is effective to use reflection in the light distribution control unit 6 as shown in FIGS. 16C and 16D, for example.

Further, the ambient illumination light distribution control unit 506d may be configured in combination with a transmissive resin. According to this configuration, since the light distribution emitted from the light source 5 is controlled even in the portion made of the transmissive resin, various light distributions are realized. In addition, the ambient illumination light distribution control unit 506d may be formed by integrally forming a portion having the reflector 518d and a transparent portion. According to this configuration, the assemblability of the ambient illumination light distribution control unit 506d is improved.

FIG. 16D shows an example in which the cross-sectional shape is a paraboloid, the central axis thereof passes through the center of the light emitting surface of the light source 5, and the light source 5 is located near the focal point of the paraboloid. Yes. According to this configuration, since the light beam is emitted in a direction substantially parallel to the central axis of the paraboloid indicated by the alternate long and short dash line, the design of the emission direction is facilitated.

Also, the divergence angle of the emitted light beam increases as the light emitting surface of the light source 5 becomes larger. Further, the divergence angle of the emitted light beam increases as the focal length of the paraboloid becomes shorter. When the light source 5 is shifted from the focal position, a light distribution with a spread at the bottom of the light distribution that is smoothly attenuated toward a wide angle is realized.

FIG. 16 (e) shows an ambient illumination light distribution control unit using a prism. The ambient illumination light distribution control unit 506e includes a first ambient illumination light distribution control unit 506f and a second ambient illumination light distribution control unit 506g. As shown in FIG. 16E, the first ambient illumination light distribution control unit 506f includes a concave portion 516f on the incident side and a convex portion 517f on the outgoing side. The first ambient illumination light distribution control unit 506f converges the divergence of the light beam emitted from the light source 5. The concave portion 516f and the convex portion 517f are provided such that their central axes substantially coincide with the optical axis of the light source 5. Therefore, the light beam is emitted from the convex portion 517f almost symmetrically with respect to the central axis.

The second ambient illumination light distribution control unit 506g includes a prism 517g and the like. As shown in FIG. 16E, the prism 517g is provided to face the convex portion 517f of the first ambient illumination light distribution control unit 506f. For example, as shown in FIG. 16 (e), the prism 517g has a short length in the central axis direction of the light source 5 or the like on the inner side (video projection unit 7 side) and on the outer side (opposite side of the video projection unit 7). It is configured to be long. The prism 517g changes the emission direction by refracting the light beam emitted from the convex portion 517f. For example, as shown in FIG. 16E, the outer prism 517g changes the emission direction of the light beam more outward than the inner prism 517g. It is desirable that the prism 517g be disposed so as to cover the existing range of the light beam emitted from the convex portion 517g.

Note that the ambient illumination light distribution control unit 506e may arbitrarily change the emission direction of the light flux after transmission, or may not change the emission direction while maintaining the optical axis direction. In order to change the emission direction after passing through the light distribution means to the outside of the image projection device 1, the central axis of the convex portion 517f provided in the vicinity of the light source 5 may be shifted outward. On the other hand, if the outgoing light flux after passing through the light distribution control unit 6 is not changed in the optical axis direction, the convex portion 517f only needs to have symmetry.

Further, since the light flux after passing through the convex portion 517f is suppressed, the size is increased even if the first ambient illumination light distribution control unit 506f and the second ambient illumination light distribution control unit 506g are separated from each other. The prism 517g can be configured without any problem. According to this configuration, the function can be divided so as to suppress the divergence of the light beam by the lens and change the emission direction in the prism 517g, so that the degree of freedom in design regarding light distribution control is improved.

Note that the order of the first ambient illumination light distribution control unit 506f and the second ambient illumination light distribution control unit 506g may be switched. In other words, the prism 517g may be provided not on the emission side but on the light source 5 side. If the prism 517g is provided on the light source side, the emission direction of the light beam becomes larger.

Further, the second ambient illumination light distribution control unit 506g may be configured by a lens instead of the prism 517g. When a lens is used, the divergence angle of the light beam can be freely adjusted after passing through the first ambient illumination light distribution control unit 506f, so that the light distribution can be broadened or the divergence can be suppressed. It becomes.

The first ambient illumination light distribution control unit 506f and the second ambient illumination light distribution control unit 506g may be configured to be connected to each other by, for example, a movable casing component, and the relative arrangement thereof may be adjusted. Good. By adjusting these relative arrangements, the light distribution is freely changed, and the user can change the divergence angle of the emitted light beam.

(Embodiment 6)
Next, a sixth embodiment of the present invention will be described. In the following description, in principle, the description of the same parts as those in the first to fifth embodiments will be omitted. In the present embodiment, light distribution control using a diffusion cover will be described. FIG. 17 is a cross-sectional view showing an example of light distribution control using the diffusion cover according to Embodiment 6 of the present invention. In FIG. 17, the left side of the video projection illumination device 601 is shown enlarged. Note that FIG. 17 illustrates the case where the ambient illumination light distribution control unit 506d illustrated in FIG. 16D is used as the ambient illumination unit. However, the ambient illumination light distribution control unit is, for example, illustrated in FIG. (C), FIG. 16 (e) and the like may be provided.

The diffusion cover 650 is provided on the emission side of the ambient illumination unit 621 as shown in FIG. Specifically, the diffusion cover is provided so as to cover the peripheral illumination unit 621 and the central illumination unit 622 from the emission side of the peripheral illumination unit 621 and the side surface side of the video projection illumination device 601. The diffusion cover 650 may be provided so as to fit into the housing 10 shown in FIG.

The diffusion cover 650 diffuses the ambient illumination light 611 and the central illumination light 612. For example, the diffusion cover 650 may be made of a material having fine particles, or may be made of a transparent material provided with a rough surface. Further, the diffusion cover 650 may have transparency. The diffusion cover 650 performs light distribution control for diffusing the emitted light beam in all directions using fine particles, a rough surface, or the like. Further, when the diffusion cover 650 is transmissive, the light beam incident on the diffusion cover 650 is hardly emitted to the light source 5 side.

The luminous flux from the light source 5 arranged on the outer periphery is reflected by the peripheral illumination light distribution control unit 506d, and illuminates the diffusion cover 650 on the side surface side. The illuminated diffusion cover 650 on the side surface emits light as a secondary light source by diffusing and transmitting the incident light beam. If the diffusion of the light beam is strong, the diffusion cover 650 emits light with a light distribution according to the cos rule and emits ambient illumination light 611. That is, in this case, the transmitted light from the diffusion cover 650 exhibits optical characteristics close to a surface light source that emits Lambert light.

Further, the light flux from the light source 5 arranged on the inner periphery illuminates the diffusion cover 650 located on the video projection side of the video projection illumination device 601. When the inner peripheral light source 5 emits light, the image projection side diffusion cover 650 emits light as a secondary light source and emits central illumination light 612 toward the image projection region 12a.

According to this configuration, the ambient illumination light 611 that illuminates the periphery is provided without the ambient illumination light 611 being emitted toward the center of the video projection device 601. In other words, the video projection illumination device 601 is provided in which a wide area such as a wall or a ceiling is illuminated without the video projection region 12a being illuminated by the ambient illumination light 611.

In order to prevent the projected image 14 and the ambient illumination light 11 from overlapping, the angle of the side surface of the diffusion cover 650 is adjusted so that the tangent plane extending from the side diffusion cover 650 does not intersect the projection image 14. It only has to be done.

Next, light distribution control using a diffusion cover with different diffusion performances on the side surface side and the image projection side will be described. FIG. 18 is a diagram illustrating an example of orientation control using a diffusion cover having different diffusion performances on the side surface side and the video projection side in the sixth embodiment of the present invention. In FIG. 18, the peripheral illumination light distribution control unit 606 a and the central illumination light distribution control unit 606 b of the light distribution control unit 6 protrude toward the emission side.

In the example shown in FIG. 18, the light beams emitted from the peripheral illumination light distribution control unit 606a and the central illumination light distribution control unit 606b both illuminate the diffusion cover 650 on the image projection side and do not illuminate the diffusion cover 650 on the side surface. It is configured.

The diffusion cover 650 is configured such that, for example, the side surface side of the video projection illumination device 601 has higher diffusion performance than the video projection side. That is, the diffusion cover 650 on the side surface side is mixed with more fine particles than the image projection side or has a rougher surface that is stronger. When the diffusion performance of the diffusion cover 650 increases, the light distribution of the light beam emitted from the diffusion cover becomes close to Lambert light emission, so that substantial light distribution control cannot be performed in the diffusion cover 650. However, as shown in FIG. 18, if the light distribution control unit 6 is configured so that the light fluxes emitted from the light sources 5 on the outer periphery and the inner periphery are emitted to the diffusion cover 650 on the image projection side, the diffusion performance is improved. Since it is low, diffusion of the light beam is suppressed, and the emitted light beam can be used for ambient illumination light and central illumination light.

Further, the diffusion cover 650 may have a configuration in which the video projection side is removed instead of lowering the diffusion performance on the video projection side. Here, the case where the diffusion performance is made different between the side surface side and the video projection side has been described, but the diffusion performance of the diffusion cover 650 may be different for each region so as to obtain a desired light distribution. Further, the diffusion cover 650 may be configured to be transparent in a predetermined region according to the diffusion performance, or may be configured to be removed.

According to this configuration, since the diffusion cover 650 on the side surface has high diffusion performance, a design that does not show the internal structure of the video projection illumination device 601 is provided.

(Embodiment 7)
Next, a seventh embodiment of the present invention will be described. In the following description, in principle, the description of the same parts as those in the first to sixth embodiments will be omitted. In this embodiment, a modified example of the light source will be described. FIG. 19 is a cross-sectional view showing an example of a modification of the light source according to Embodiment 7 of the present invention. In the present embodiment, as shown in FIG. 19, a light guide 752 is disposed between the light source 5 and the light distribution control unit 6. The light guide 752 guides the light beam emitted from the light source 5 to the light distribution control unit 6. The light guide 752 is disposed, for example, between the outer peripheral light source 5 and the peripheral illumination light distribution control unit 6a, and guides the light beam emitted from the outer peripheral light source 5 to the peripheral illumination light distribution control unit 6a. Although not shown, the light guide 752 may be disposed, for example, between the inner peripheral light source 5 and the central illumination light distribution controller 6b. The light guide 752 is configured in a columnar shape such as a cylindrical shape, a quadrangular column, a polygonal column, or a column, for example.

According to this configuration, since the light beam emitted from the light source 5 is reliably guided to the light distribution control unit 6 regardless of the distance between the light source 5 and the light distribution control unit 6, the highly efficient peripheral illumination light 11 or Central illumination light 12 is provided.

Further, in the light guide 752, the shape of the entrance surface 752a and the shape of the exit surface 752b may be different. For example, it is desirable that the shape of the incident surface 752 is substantially the same as the shape of the light emitting surface of the light source 5, and the shape of the exit surface 752 b is a predetermined shape that matches the shape of the light distribution control unit 6. For example, when the light distribution control unit 6 has an imaging system structure such as a lens, the light distribution shape of the light beam emitted from the light source 5 disposed at the focal length of the lens is distributed after the light distribution control is performed. It becomes the same as the shape of the light distribution. For this reason, if the light guide 752 is configured in this way, light distribution control by the light exit surface 752b of the light guide 752 becomes possible. Further, if the area of the exit surface 752b of the light guide 752 is larger than the area of the entrance surface 752a, the luminous flux is efficiently guided to the light distribution control unit 6 using total reflection, and highly efficient illumination light is emitted. Provided. In addition, if the area of the exit surface 752b of the light guide 752 is smaller than the area of the entrance surface 752a, the divergence of the light beam can be suppressed every time the reflection is repeated on the side surface, so that a light beam close to parallel light is emitted.

Further, the light guide 752 may be made of, for example, a transparent material, or may have a side surface having a reflective surface. When a transparent material is used, for example, fine particles for adjusting the diffusion performance may be mixed in the light guide 752, and a rough surface is provided on the exit surface facing the light distribution control unit 6. May be. Thereby, the light beam emitted from the light source 5 is scattered while being repeatedly reflected inside the light guide 752, so that the light beam is mixed inside the light guide 752. Thereby, unevenness in the illuminance distribution of the light flux generated on the light emitting surface of the light source 5 is eliminated. Thereby, the illuminance of the light beam emitted from the emission surface 752b of the light guide 752 is made uniform, and high-quality peripheral illumination light 11 and central illumination light 12 are provided.

Next, other modified examples of the light source will be described. FIG. 20 is a diagram showing another modification of the light source according to Embodiment 7 of the present invention. A light source 805 illustrated in FIG. 20 includes, for example, a semiconductor laser 853 and a phosphor 854. The light source 805 emits a light beam when the phosphor 854 is excited by the semiconductor laser emitted from the semiconductor laser 853. When the semiconductor laser 853 is used, the light emitting region of the laser is narrowed down, and the phosphor 854 can be configured to be small. As a result, a small region of the phosphor 854 can emit light to create a minute light emission point. If the light emission point is small, light distribution control by the light distribution control unit 6 is facilitated, so that the optical system constituting the light distribution control unit 6 can be downsized and more effective light distribution control can be performed.

FIG. 21 is a diagram showing another modification of the light source according to Embodiment 7 of the present invention. It is a figure which shows the other modification of a light source. Here, a case where the light emission intensity, color, and the like of the light source are controlled two-dimensionally in the light source will be described. FIG. 21A is a cross-sectional view showing the positional relationship between the light source 905 and the light distribution control unit 6. FIG. 21B is a diagram illustrating an example of the two-dimensional modulation light emitting surface 955 of the light source 905. A light source 905 illustrated in FIG. 21A is configured by, for example, an OLED (Organic Light Emitting Diode). On the emission side of the light source 905, for example, as shown in FIGS. 21A and 21B, a two-dimensional modulation unit 955 that two-dimensionally controls the shape, light emission intensity, color, and the like of the light beam emitted from the light source 905. Is provided. The two-dimensional modulation unit 955 controls the shape, light emission intensity, color, and the like of the light beam emitted from the light source 905. FIG. 21B shows the case where the two-dimensional modulation unit 955 is configured so that the light beam is emitted in an arrow shape, but the shape of the light beam can be arbitrarily adjusted by changing the configuration. Is possible. In addition to the combination of the light source 905 and the two-dimensional modulation unit 955 described above, a light source 905 and a liquid crystal display element (not shown) may be combined in the light source portion.

According to this configuration, since the light emission intensity, color, and the like of the light source 905 are also controlled, the light distribution after being emitted from the light distribution control unit 6 is dynamically controlled. Thereby, the light distribution of illumination light can be controlled in detail.

FIG. 22 is a diagram showing another modification of the light source according to Embodiment 7 of the present invention. Here, a case where the light source is configured in an annular shape will be described. FIG. 22A is a cross-sectional view showing the positional relationship between the light source 1005 and the light distribution control unit 6. FIG. 22B shows the light source part and the light distribution control unit 6 separately. A light source 1005 shown in FIG. 22 is configured in an annular shape. Moreover, the light source 1005 is comprised by OLED, for example. For example, as shown in FIG. 22A, the light source 1005 is arranged separately on the outer periphery and the inner periphery. The outer peripheral light source 1005 constitutes, for example, the peripheral illumination unit 11, and the inner peripheral light source 1005 constitutes, for example, the central illumination unit 12. These light sources 1005 emit light in an annular shape. The ambient illumination light distribution control unit 6a and the central illumination light distribution control unit 6b of the light distribution control unit 6 are configured in an annular shape according to the shape of the light source 1005, for example, as shown in FIG.

FIG. 22B illustrates the case where the light source 1005 for the outer periphery and the inner periphery is provided, but the light source 1005 is provided only for one turn, which is the minimum configuration, for example. Alternatively, three or more turns may be provided to enable finer light distribution control. As the light source 1005, for example, a light source unit in which a diffusion surface and a large number of minute light sources are combined may be used.

According to this configuration, since the circumferential light distribution is a continuous shape, the peripheral illumination light 11 and the central illumination light 12 having a smooth and high-quality light distribution are provided.

(Embodiment 8)
Next, an eighth embodiment of the present invention will be described. In the following description, in principle, the description of the same parts as those in the first to seventh embodiments will be omitted. In the above-described embodiment, the method for detecting the operation signal from the user using the camera 8 has been described. Until now, the direction of an object such as a finger or a hand viewed from the camera 8 has been detected based on the captured image. Two-dimensional position information of the object is acquired based on the detected direction, and an operation signal is detected based on the acquired position information. However, it is difficult to detect a more complicated operation signal with only two-dimensional position information. Specifically, the direction of the user's finger as viewed from the pupil position of the camera lens is only specified, and arbitraryness remains in specifying the position of the object in the three-dimensional space. Therefore, in the present embodiment, a method for acquiring three-dimensional position information will be described.

FIG. 23 is a diagram showing an example of a method for acquiring three-dimensional position information according to Embodiment 8 of the present invention. In the present embodiment, for example, illumination control is performed such that a plurality of light sources 5 such as the light sources 5A and 5B (partial light sources) are sequentially emitted. When each light source 5 (5A, 5B, etc.) emits light, the camera 8 photographs the object and the shadow of the object. In this way, the camera 8 generates a plurality of captured images corresponding to the plurality of light sources 5. From each captured image, the shadow of the object is extracted after the direction of the object viewed from the camera 8 is specified, because the extracted shadow is generated by the illumination light from the lit light source 5. , Appearing on an extension line connecting the emission position of the illumination light and the object, whereby the direction of the object seen from the camera 8 (first direction) and the object seen from the emission position of the illumination light. The direction is detected, and the three-dimensional position information of the object is obtained by calculating the intersection of these two directions. So you can increase the variation of operation signal Kill.

Further, by sequentially illuminating each light source 5, the camera 8 may generate a captured image corresponding to each light source 5. Thereby, since the direction of the target object seen from the radiation | emission position of illumination light is detected, the detection accuracy of three-dimensional position information can be improved.

Here, a method of acquiring three-dimensional position information by exemplifying a user's finger or hand as an object has been described. However, the target object for acquiring the position information is not limited to these, and may be, for example, a rod-like object.

Note that it is desirable that the light source 5 is switched at high speed so as not to cause flickering in human eyes, for example. For example, if the light source 5 is switched at a frequency of 180 Hz or higher, it is difficult for the human eye to see. Therefore, it is desirable to switch the light source 5 at a frequency higher than that.

Further, for example, a light source that emits invisible light having a wavelength band of an invisible region such as infrared light (hereinafter also referred to as an invisible light source) may be separately provided for detecting the position of the object. Even if the invisible light is emitted so as to overlap the projected image 14, the contrast of the projected image 14 is not lowered. According to this configuration, it is possible to sequentially turn on the invisible light source without causing flickering in human eyes regardless of the lighting cycle. In addition, since the light source 5 that emits the illumination light and the light source that emits the invisible light source are used at the same time, the three-dimensional position information of the object is acquired without affecting the illumination light.

In addition, the invisible light source may be configured to illuminate a wider area. Thereby, the acquisition range of three-dimensional position information is expanded.

Further, when the output of the invisible light source is weak, a light distribution control unit corresponding to the invisible light source may be separately provided. The divergence of invisible light is suppressed, the irradiation energy density is increased, and the shadow can be emphasized, and the detection accuracy of the three-dimensional position information is improved.

(Embodiment 9)
Next, a ninth embodiment of the present invention will be described. In the following description, in principle, the description of the same parts as those in the first to eighth embodiments will be omitted. In the above-described embodiment, a case has been described in which light distribution from a light source arranged in an annular shape is controlled in the radial direction of the annular shape, for example. In contrast, in the present embodiment, a case will be described in which light distribution from a light source is controlled in the circumferential direction of the ring. FIG. 24 is a diagram illustrating an example of the configuration of the light distribution control unit according to the ninth embodiment of the present invention. FIG. 24A is a plan view of the light distribution control unit viewed from the emission side. FIG. 24B is a diagram illustrating an example of the configuration of the light distribution control unit. The left side in the drawing is an enlarged plan view, and the right side in the drawing is an enlarged sectional view. FIG. 24C is a diagram illustrating an example of another configuration of the light distribution control unit, in which the left side in the drawing is an enlarged plan view and the right side in the drawing is an enlarged sectional view.

The light distribution control unit 1106 is provided for each light source 5 as shown in FIG. For example, as shown in FIGS. 24A and 24B, each orientation control unit 1106 is configured in a substantially rectangular shape in plan view.

According to this configuration, the light distribution control unit 1106 can control the divergence of the light beam emitted from the light source 5 in a rectangular shape. Thereby, the light distribution control unit 1106 is provided with the image projection illumination device 1101 that can control the light beam emitted from the light source 5 in the circumferential direction of the ring.

Further, the light distribution control unit 1106 may be constituted by, for example, an aspheric lens and may have an optical function in which spherical aberration is suppressed. Further, the light distribution control unit 1106 may be configured by a free-form surface lens, and may be configured to adjust not only spherical aberration but also the light distribution of the light beam in the circumferential direction and the radial direction.

Also, the light source 5 of the video projection illumination device 1101 may be configured to be individually switched on / off. For example, the control unit 110 individually controls ON / OFF of the light source 5. Thereby, there is provided a video projection illumination device 1101 capable of performing more complicated light distribution control combining a region illuminated with illumination light and a region not illuminated with illumination light.

Further, for example, as shown in FIG. 24C, a light beam adjusting member 1156 that adjusts the shape of the light beam emitted from the light source 5 may be provided between the light source 5 and the light distribution control unit 1106. . The light flux adjusting member 1156 is made of a light-shielding or reflective material. As shown in FIG. 24C, the light beam adjusting member 1156 has an opening 1156a in a region facing the light source 5, and the shape of the light beam from the light source 5 is adjusted by the opening 1156a. The light is emitted to the light distribution control unit 1106.

According to this configuration, since the shape of the light beam emitted from the light source 5 is adjusted by the light beam adjusting member 1156, a desired light distribution can be obtained regardless of the shape of the light emitting surface of the light source 5. Further, the light distribution control in the light distribution control unit 1106 is performed with high accuracy.

Further, as shown in FIG. 24C, a protective plate 1157 may be provided between the light source 5 and the light flux adjusting member 1156. For example, the protective plate 1157 can prevent the light flux adjusting member 1156 from being damaged. Further, the protective plate 1157 may be made of, for example, an insulating material. Thereby, electric shock from the light source 5 and the light flux adjusting member 1156 can be prevented. Note that the order of the light flux adjusting member 1156 and the protective plate 1157 may be interchanged.

Further, the light flux adjusting member 1156 and the protective plate 1157 may be integrally formed. Thereby, the manufacturing cost of the light beam adjusting member 1156 and the protective plate 1157 is reduced.

Further, the light flux adjusting member 1156 may be formed on the protective plate 1157 by printing, for example. As a result, the light flux adjusting member 1156 is formed with higher accuracy than in general machining, so that precise light distribution control is possible.

FIG. 24A shows an example in which the light sources 5 are arranged in two rows. However, only one row may be arranged as the minimum necessary configuration, for example, three or more rows are provided. It may be. Further, the arrangement of the light sources 5 is not limited to a concentric circle (annular) in plan view, and may be, for example, a rectangle or other shapes.

FIG. 25 is a diagram showing an example of the illuminance distribution when a plurality of video projection illumination devices according to Embodiment 9 of the present invention are used side by side. When a plurality of video projection devices 1101 in FIG. 24A are arranged side by side, a plurality of video light 4A and video light 4B are connected to provide one large video.

At this time, the ambient illumination light of one image display illumination device 1101 that emits the image light 4A is 1111A. As shown in FIG. 25, the ambient illumination light 1111A does not overlap the image light 4A, but overlaps the image light 4B emitted from the other image projection illumination device 1101.

Therefore, one video display illumination device 1101 that emits the video light 4A includes, for example, the light source 5 that illuminates the peripheral illumination light 1111A in a region overlapping the video peripheral region 11B and the video projection region 12B of the other video projection illumination device 1101. It is turned off so that the ambient illumination light 1111A does not overlap the image light 4B and the ambient illumination light 1111B. Similarly, the other video display illumination device 1101 that emits the video light 4B illuminates the peripheral illumination light 1111B in a region overlapping the video peripheral region 11A and the video projection region 12A of the one video projection illumination device 1101, for example. The light source 5 is turned off so that the ambient illumination light 1111B does not overlap the image light 4A and the ambient illumination light 1111A. For example, the control unit 110 performs such ON / OFF switching of the light source 5.

According to this configuration, since the peripheral illumination lights 1111A and 1111B are divided and controlled in the circumferential direction, a plurality of image lights 4A and 4B emitted from the plurality of image projection illumination devices 1101 are combined to produce one larger projected image. Is provided. Moreover, according to this structure, one larger surrounding illumination light surrounding one large projection image is provided by the surrounding illumination lights 1111A and 1111B of the plurality of image projection illumination devices 1101. Also, a larger projected image with higher contrast and a wider range of ambient illumination light are provided simultaneously.

In addition, although the case where two video projection illumination devices 1101 are used has been described here, more video projection illumination devices 1101 may be used. According to this configuration, one larger projected image is projected. In addition, one larger ambient illumination light surrounding one larger projected image is provided.

As mentioned above, the invention made by the present inventor has been specifically described based on the embodiments of the invention. However, the present invention is not limited to the embodiments of the invention, and various modifications can be made without departing from the scope of the invention. It goes without saying that it is possible.

Note that the present invention is not limited to the above-described embodiment, and includes various modifications. For example, the above-described embodiment has been described in detail for easy understanding of the present invention, and is not necessarily limited to one having all the configurations described.

Further, a part of the configuration of one embodiment can be replaced with the configuration of another embodiment, and the configuration of another embodiment can be added to the configuration of one embodiment. . In addition, it is possible to add, delete, and replace other configurations for a part of the configuration of each embodiment. Note that the members and relative sizes described in the drawings are simplified and idealized for easy understanding of the present invention, and may have a more complicated shape in mounting.

DESCRIPTION OF SYMBOLS 1 ... Video projection illumination apparatus, 4 ... Video light, 5 ... Light source, 6 ... Light distribution control part, 6a ... Peripheral illumination light distribution control part, 6b ... Central illumination light distribution control part, 7 ... Video projection part, 8 ... Camera (Imaging part), 9 ... environmental sensor, 11 ... ambient illumination light, 11a ... ambient illumination area (second area), 12 ... central illumination light, 12a ... video projection area (first area), 14 ... projected video 15 ... Auxiliary illumination light, 21 ... Ambient illumination unit, 22 ... Central illumination unit, 101 ... Operation input unit, 110 ... Control unit, 650 ... Diffusion cover, 752 ... Light guide, 853 ... Semiconductor laser, 854 ... Phosphor , 955 ... Two-dimensional modulation unit

Claims (15)

1. An image projection unit for projecting an image to the first area;
   A peripheral illumination unit that emits a luminous flux of ambient illumination light that illuminates a second region surrounding the first region;
   With
   Video projection lighting device.
2. The video projection illumination device according to claim 1,
   A central illumination unit that emits a luminous flux of central illumination light that illuminates the first region;
   Video projection lighting device.
3. The video projection lighting device according to claim 2,
   The peripheral illumination unit and the central illumination unit include a light distribution control unit that controls the distribution of the peripheral illumination light and the central illumination light.
   Video projection lighting device.
4. The video projection illumination device according to claim 1,
   An environmental sensor for acquiring environmental information of the surrounding environment, and a control unit,
   The control unit adjusts the illuminance of the ambient illumination light based on the environment information.
   Video projection lighting device.
5. The video projection illumination device according to claim 1,
   An environmental sensor for acquiring environmental information of the surrounding environment, and a control unit,
   The control unit adjusts the brightness of the video based on the environment information.
   Video projection lighting device.
6. The video projection lighting device according to claim 3,
   The light distribution control unit of the ambient illumination unit is configured to have a smaller curvature each time it leaves the video projection unit.
   Video projection lighting device.
7. The video projection illumination device according to claim 1,
   The video projection unit emits auxiliary illumination light for adjusting the illuminance of the video projected on the first region and the illuminance of the ambient illumination light illuminated on the second region.
   Video projection lighting device.
8. The video projection lighting device according to claim 2,
   An operation input unit that receives an operation signal from a user, and a control unit,
   The control unit, based on the operation signal received by the operation input unit, a first mode for simultaneously emitting the ambient illumination light by the ambient illumination unit and projecting the video, and the ambient illumination A second mode for simultaneously performing the emission of the ambient illumination light by the unit and the emission of the central illumination light by the central illumination unit,
   Video projection lighting device.
9. The video projection lighting device according to claim 2,
   An imaging unit that generates a captured image of the object, and a control unit,
   The control unit detects an operation signal from the user based on the captured image of the object generated by the imaging unit, and the ambient illumination by the ambient illumination unit based on the detected operation signal A first mode in which light emission and projection of the image are simultaneously performed; emission of the peripheral illumination light by the peripheral illumination unit; and emission of the central illumination light by the central illumination unit are performed simultaneously. Switch between two modes,
   Video projection lighting device.
10. The video projection lighting device according to claim 9,
    In the peripheral illumination unit and the central illumination unit, a plurality of light sources are arranged so as to surround the video projection unit in plan view,
    While some of the light sources emit the luminous flux, the imaging unit generates the captured image of the object,
    The control unit detects a first direction that is a direction of the object viewed from the imaging unit based on the captured image, extracts a shadow of the object based on the captured image, and adds the shadow to the shadow Based on the second direction which is the direction of the object viewed from the part of the light source, and based on the first direction and the second direction, the three-dimensional position information of the target part is obtained. Obtaining and detecting the operation signal based on the three-dimensional position information;
    Video projection lighting device.
11. The video projection illumination device according to claim 1,
    The light source of the peripheral illumination unit is composed of OLED,
    A two-dimensional modulation unit that two-dimensionally controls the shape, light emission intensity, and color of the light beam is provided on the emission side of the light source.
    Video projection lighting device.
12. The video projection illumination device according to claim 1,
    The light source of the peripheral illumination unit includes a semiconductor laser and a phosphor that is excited by the laser light emitted from the semiconductor laser and emits the peripheral irradiation light.
    Video projection lighting device.
13. The video projection illumination device according to claim 1,
    A light distribution control unit for controlling the light distribution of the ambient illumination light;
    A light guide that guides the ambient illumination light to the light distribution control unit is disposed between the light source of the ambient illumination unit and the light distribution control unit.
    Video projection lighting device.
14. The video projection illumination device according to claim 1,
    The peripheral illumination unit includes a plurality of light sources arranged so as to surround the video projection unit in a plan view, and is switched on and off for each light source.
    Video projection lighting device.
15. The video projection illumination device according to claim 1,
    A diffusion cover for diffusing the ambient illumination light is provided on the emission side of the ambient illumination unit.
    Video projection lighting device.

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