JP2013076923A - Projector, projection control method and program - Google Patents

Abstract

PROBLEM TO BE SOLVED: To enable the use of a projector for an illumination device in wide variety.SOLUTION: The projector comprises: a light source part 16; input systems (11 to 13) that input an image signal; projection systems (14, 15, and 17 to 19) that form and project an optical image according to the input image signal by using light from the light source part, and include a projection lens part 18 capable of adjusting a projection angle of view and focus; an image storage section 31A for illumination, which stores an image signal for illumination; photographing systems (20 to 24) that measure the distance of a projection object; and a CPU 29 that selectively sets, according to an operation in an operation section 32, a projection mode for forming and projecting the optical image according to the input image signal or an illumination mode for illumination by using light from the light source part, reads the image signal for illumination from the image storage section for illumination when the illumination mode is set, replaces it with the image signal input by the input systems to project an optical image by the projection systems according to it, and adjusts the projection lens part of the projection systems to a different state during the projection mode on the basis of the distance of the projection object obtained by the photographing systems.

Description

  The present invention relates to a projection apparatus, a projection control method, and a program suitable for a projector using a semiconductor light emitting element as a light source, for example.

  By combining devices with different functions, a technology that enables a simple flashlight usage method with a projector is considered as a portable information device that realizes new ease of use that was not realized with conventional technology It has been. (For example, Patent Document 1)

JP 2006-093801 A

  In the technique described in the above-mentioned patent document, when a portable projector is used as a flashlight, an image pattern forming unit for forming a light image of a projected image, specifically, a transmissive color liquid crystal panel is used as an optical path. By evacuating, the illumination light emitted from the light source is directly and efficiently irradiated onto the subject. As described above, since the capacity of the power source is limited because it is a portable device, there is a search for a technology in a direction in which the brightness of the light source is utilized as much as possible for illumination light.

  On the other hand, considering the case of using a projector that is fixedly installed in one place as a lighting device without assuming use as a portable device, it is not always necessary to make maximum use of the brightness of the light source element. Rather, considering the recent trend toward energy conservation, it is considered that a variety of lighting patterns suitable for the usage environment are demanded while modest brightness. Regarding the technology in consideration of this point, there is no applicable one including the description of the above patent document.

  The present invention has been made in view of the above circumstances, and an object thereof is to provide a projection apparatus, a projection method, and a program that can be used in various variations as illumination.

  According to one aspect of the present invention, there is provided a projection optical system that forms and projects a light image according to an image signal input by the input unit using light from the light source, an input unit that inputs an image signal, and light from the light source. A mode for selectively setting an included projection unit, a projection mode for forming and projecting a light image according to an image signal input by the input unit, and an illumination mode for performing illumination using light from the light source When the illumination mode is set by the setting means, the image storage means for storing the illumination image signal, and the mode setting means, the illumination image signal is read from the image storage means and replaced with the image signal input by the input means. Image control means for projecting a light image corresponding to the illumination image signal by the projection means, distance measuring means for measuring the distance to the projection target by the projection means, and illumination mode by the mode setting means Scheduled to, based on the distance to the projection target obtained in the above distance measuring means, the projection mode of the projection optical system of the projection means is characterized by comprising an optical control means for adjusting the different states.

  According to the present invention, it can be used in various variations as illumination.

The block diagram which shows the functional circuit structure of the illumination projector which concerns on one Embodiment of this invention. 6 is a flowchart showing the processing contents of the entire projection operation according to the embodiment. The flowchart which shows the processing content of the subroutine of the spot illumination condition setting process of FIG. 2 which concerns on the embodiment. The flowchart which shows the processing content of the subroutine of the blurring illumination condition setting process of FIG. 2 which concerns on the same embodiment. The figure which illustrates the illumination operation | movement in the spot illumination mode which concerns on the same embodiment. The figure explaining the tracking operation | movement to the to-be-photographed object position in the spot illumination mode which concerns on the same embodiment. The figure which illustrates the illumination operation | movement in the blur illumination mode which concerns on the embodiment.

  In the following, the present invention is applied to a ceiling-mounted projector for lighting and lighting (projector device having a lighting function) (hereinafter referred to as “lighting projector”) that employs a DLP (Digital Light Processing) (registered trademark) system. An embodiment will be described with reference to the drawings.

  That is, in the present embodiment, for example, an illumination projector installed on a ceiling portion on the upper side of a position where a table in a living room is installed is used as a downlight as a lighting fixture. An image can be projected using the top plate of the table installed in the screen as a screen.

  The illumination projector according to the present embodiment includes a zoom lens in the projection lens system, and illuminates the room with a wide projection field angle of, for example, about 120 ° in the illumination mode, while the projection field angle is about 45 ° in the image projection mode. It is assumed that it is possible to project a bright image in which the aperture is stopped and the luminous flux is concentrated.

  FIG. 1 is a diagram for mainly explaining a functional configuration of an electronic circuit of the illumination projector 10 according to the present embodiment. In the figure, a wireless image signal is input from a wireless LAN antenna 11 via a wireless LAN interface (I / F) 12 and an image signal from an external device (not shown) connected by wire via an input unit 13. The

  The wireless LAN interface 12 is a Wi-Fi compatible interface circuit conforming to, for example, the IEEE802.11a / b / g / n standard, and is used as an external device via the wireless LAN antenna 11 under the control of the CPU 29 described later. For example, data transmission / reception with a personal computer or the like is controlled.

  The input unit 13 includes, for example, a pin jack (RCA) type video input terminal, a D-sub15 type RGB input terminal, an HDMI (High-Definition Multimedia Interface) standard image / audio input terminal, and a USB (Universal Serial Bus) connector. And an image signal and an audio signal are input from an external device connected by wire through any of these terminals.

  Image signals of various standards input from the wireless LAN interface 12 or the input unit 13 are digitized and then sent to the projection image driving unit 14 via the system bus SB. The projection image drive unit 14 multiplies a frame rate according to a predetermined format, for example, 60 [frames / second], the number of color component divisions, and the number of display gradations in accordance with the transmitted image data. The micromirror element 15 is driven to display by faster time-division driving.

  The micromirror element 15 performs display operation by individually turning on / off each tilt angle of a plurality of micromirrors arranged in an array, for example, WXGA (horizontal 1280 pixels × vertical 768 pixels) at high speed. Then, an optical image is formed by the reflected light.

  On the other hand, R, G, B primary color lights are emitted cyclically from the light source unit 16 in a time-sharing manner. The light source unit 16 includes an LED, which is a semiconductor light emitting element, and repeatedly emits R, G, and B primary color lights in a time-sharing manner. The LED included in the light source unit 16 may include an LD (semiconductor laser) or an organic EL element as an LED in a broad sense. The primary color light from the light source unit 16 is totally reflected by the mirror 17 and applied to the micromirror element 15.

  Then, an optical image is formed by the reflected light from the micromirror element 15, and the formed optical image is projected and displayed through the projection lens unit 18.

  The projection lens unit 18 includes a focus lens for moving a focus position and a zoom lens for changing a zoom (projection) angle of view in an internal lens optical system, and each of these lenses is a lens motor (M). The position along the optical axis direction is selectively driven by a gear mechanism (not shown) 19.

  A photographing lens unit 20 is disposed adjacent to the projection lens unit 18. The photographing lens unit 20 includes a focus lens for moving the focus position, and has a photographing field angle that covers the projection field angle at the widest angle of the projection lens unit 18. An external optical image that enters the photographing lens unit 20 is formed on a CMOS image sensor 21 that is a solid-state imaging device.

  An image signal obtained by image formation by the CMOS image sensor 21 is digitized by the A / D converter 22 and then sent to the captured image processing unit 23.

  The captured image processing unit 23 scans and drives the CMOS image sensor 21 to execute a continuous capturing operation, and performs image processing such as contour extraction of each time-series image data obtained by capturing and motion detection between images. By performing this, the movement (gesture) of the person moving into the image is extracted as will be described later.

  In addition, the photographed image processing unit 23 drives a lens motor (M) 24 for moving the focus lens position of the photographing lens unit 20.

  Further, the infrared sensor 26 is disposed via the lens 25 and the illuminance sensor 28 is disposed via the lens 27 so that the projection lens unit 18 and the photographing lens unit 20 are located close to each other so that a detection range equivalent to that of the photographing lens unit 20 is obtained. Provided.

  The infrared sensor 26 is provided as a human sensor, and detects an infrared ray radiated from the human body when the human body is present within the widest angle projection range of the projection lens unit 18. The detection result is digitized and output to a CPU 29 described later.

  The illuminance sensor 28 detects an average illuminance within the widest angle projection range of the projection lens unit 18, digitizes the detection result, and outputs the digitized result to a CPU 29 described later.

  The CPU 29 controls all the operations of the above circuits. The CPU 29 is directly connected to the main memory 30 and the program memory 31. The main memory 30 is composed of, for example, an SRAM and functions as a work memory for the CPU 29. The program memory 31 is composed of an electrically rewritable nonvolatile memory such as a flash ROM, and stores an operation program executed by the CPU 29, various fixed data, and the like.

  The program memory 31 includes an illumination image storage unit 31A and a gesture content storage unit 31B as illustrated. The image storage unit 31A for illumination is image (illumination image) information to be projected in the illumination mode, for example, image information in which only the illumination position is white and other surroundings are black in the spot illumination mode described later, The data of the parameters (brightness etc.) is stored. The gesture content storage unit 31B stores data in which the content of the user's gesture motion, which is set in advance, is expressed by a time-series motion vector.

  The CPU 29 controls the lighting projector 10 by reading out the operation program and the fixed data stored in the program memory 31, developing and storing them in the main memory 30, and executing the program. To do.

  The CPU 29 executes various projection operations in accordance with operation signals from the operation unit 32. The operation unit 32 receives a key operation signal sent from a remote controller (not shown) dedicated to the illumination projector 10 via an infrared light receiving unit provided in the main body of the illumination projector 10, and receives a signal corresponding to the content of the key operation. The data is sent to the CPU 29. The operation signal from the remote controller (not shown) received by the operation unit 32 includes, for example, turning on / off the power of the illumination projector 10 and switching the illumination mode described later.

  Further, the CPU 29 cooperates with the captured image processing unit 23 to determine what kind of operation the content of the gesture corresponds to.

The CPU 29 is further connected to the sound processing unit 33 via the system bus SB.
The sound processing unit 33 includes a sound source circuit such as a PCM sound source, converts the sound signal given during the projection operation into an analog signal, drives the speaker unit 34 to emit sound, or generates a beep sound or the like as necessary.

Next, the operation of the above embodiment will be described.
The operation shown below is executed after the CPU 29 develops the operation program read from the program memory 31 and the standard data in the main memory 30 as described above. The operation program and the like stored in the program memory 31 are not only those stored in the program memory 31 at the time of factory shipment of the lighting projector 10, but also the wireless LAN interface 12 and the wireless LAN antenna after the user purchases the lighting projector 10. 11 includes a version upgrade program downloaded from a personal computer (not shown) through the Internet via the Internet.

  FIG. 2 shows the processing contents of basic operations executed by the CPU 29. Initially, the operation unit 32 waits for a key operation to turn on the power from the remote controller (step M101).

  When the key operation for turning on the power is performed by the remote controller, the CPU 29 determines that in step M101 and executes a predetermined initial setting process (step M102).

  Next, as a distance measurement process, the CPU 29 causes the captured image processing unit 23 to start an imaging operation with the CMOS image sensor 21, while sequentially moving the focus lens position of the photographing lens unit 20 via the lens motor 24, for example, a contrast method. An accurate focus position up to the projection plane facing the projection lens unit 18 is acquired by the AF (automatic focusing) operation (step M103).

Next, the CPU 29 reads out the projection mode information set at that time from the program memory 31 (step M104).
In the present embodiment, a “normal projection mode” for performing projection corresponding to an input image signal, a “spot illumination mode” as a first illumination mode for illuminating a range of interest intensively, and a position around a location of interest There are a total of three modes of “blurred illumination mode” as the second illumination mode for illuminating the whole. For example, the spot illumination mode is set as a default immediately after the power is turned on.

Based on the read mode information, the CPU 29 first determines whether any one of the illumination modes is indicated (step M105).
If it is determined that neither illumination mode is set, the CPU 29 executes a process for setting conditions in the normal projection mode in order to shift to the operation in the normal projection mode (step M106).

  As the setting conditions for the normal projection mode, for example, image signal input switching information that was set when the power was last turned off, projection mode information indicating the brightness and color of the image to be projected, the presence or absence of audio information, and audio are output. Including voice information indicating the volume of the case.

If it is determined in step M105 that the illumination mode is set, the CPU 29 next determines whether or not the illumination mode is a spot illumination mode (step M107).
If it is determined that the spot illumination mode is selected, the CPU 29 next executes a condition setting process in the spot illumination mode (step M108).

  FIG. 3 is a subroutine showing the detailed contents of the condition setting process in the spot illumination mode. At the beginning of the subroutine processing, the CPU 29 reads, as a default preliminary illumination, a test image that is a white color using the entire surface of the micromirror element 15 from the illumination image storage unit 31A and projects it on the projection target surface. Can be recognized (step S101).

  Next, the CPU 29 causes the captured image processing unit 23 to perform an imaging operation with the CMOS image sensor 21 to capture an image of the projection target surface including the subject (step S102). For the image obtained by shooting, the CPU 29 further executes subject recognition processing from the image in the captured image processing unit 23 by contour extraction processing or the like (step S103).

  The CPU 29 waits until an object having a shape different from the table is extracted from the image by comparing the result of the recognition processing with data indicating the shape of the table stored in advance (step S104).

  At this time, the user within the imaging range performs a gesture for indicating the position of the subject on the table, for example, an operation for pointing the subject with a finger as necessary, and causes the captured image processing unit 23 and the CPU 29 to recognize it. It is good as a thing.

  In that case, the captured image processing unit 23 performs image processing such as contour extraction of each time-series image data obtained from the A / D converter 22 and motion detection between images under the control of the CPU 29. The CPU 29 stores, in the gesture content storage unit 31B of the program memory 31, the data representing the movement of the person's fingers obtained from the photographed image processing unit 23, and the gesture content related to operations of various preset projection operations. The degree of coincidence is calculated as a recognition rate in comparison with each of the above data, and a recognition rate that exceeds a certain recognition rate, for example 80 [%].

  When it is determined that the shape of the subject has been extracted, the CPU 29 next recognizes the shape of the subject extracted from the image by the captured image processing unit 23 and the projection angle of view that covers the range (step S105).

  Furthermore, the CPU 29 reads the selection setting information of the projection image for illumination stored in advance in the program memory 31 (step S106).

  The CPU 29 further determines whether or not a mode for setting the shape of the projected image following the shape of the subject is set in advance (step S107). If it is determined that the same setting has not been made in advance, the CPU 29 illuminates the image information for illumination of the image shape (for example, “circle”) corresponding to the setting made in advance read in step S106. Selection is made from among a plurality of illumination image information stored in the image storage unit 31A (step S108).

  If the CPU 29 determines in step S107 that the mode for setting the shape of the projected image following the shape of the subject has been set, the CPU 29 matches the shape of the subject recognized in step S105 (an ellipse close to a circle, It is determined whether or not the illumination image information of a horizontally long ellipse, rectangle, etc. is in advance in the illumination image storage unit 31A of the program memory 31 (step S109).

  If it is determined that there is illumination image information having a shape that matches the illumination image storage unit 31A, the CPU 29 selects the illumination image information that has been determined to match the shape and reads it from the illumination image storage unit 31A. (Step S110).

  If it is determined in step S109 that there is no illumination image information having a shape that matches the illumination image storage unit 31A, the CPU 29 newly creates illumination image information that matches the shape of the subject (step S111). .

  When the illumination image information is selected or created in any one of the above steps S108, S110, and S111, the CPU 29 next determines whether or not the illumination color reflection mode is set in advance (step S112).

  If it is determined that the illumination color reflection mode is set, the CPU 29 recognizes the main colors of the subject in the captured image (step S113) and selects an illumination color that reflects the recognized color. (Step S114).

  Regarding the selection of the illumination color, for example, a lookup table is prepared in advance in the program memory 31, and the illumination color can be easily selected by reading the corresponding illumination color with reference to the recognized color.

  If it is determined in step S112 that the illumination color reflection mode is not set, the CPU 29 selects a preset default illumination color, such as white, regardless of the recognized main color of the subject (step S115). ).

  Thereafter, the degree of blurring on the peripheral side of the portion to be illuminated by the center is determined by reflecting the preset contents (step S116).

  Furthermore, when a mechanism for shifting the optical axis, that is, a so-called “tilting” mechanism is formed in the lens optical system constituting the projection lens unit 18, the optical axis is changed by swinging or tilting by a necessary angle. Then, settings may be made so as to suppress the deformation of the image when the projection optical axes with respect to the projection plane are not orthogonal (step S117).

  Subsequently, the CPU 29 reads information on the optical system set in advance in the spot illumination mode (step S118), and sets the zoom lens in the projection lens unit 18 by driving the lens motor 19 based on the read information. The zoom angle of view is moved (step S119).

  Here, because of the nature of spot illumination, although the details will be described later, it is preferable to move the zoom angle of view so that the angle of view includes only the subject and its vicinity.

At the same time, the CPU 29 moves the focus lens in the projection lens unit 18 by driving the lens motor 19 based on the distance information to the projection plane acquired in step M103 of the main routine (step S120).
Here, due to the nature of spot illumination, the focus is moved so as to be in focus, although details will be described later.

  Thus, the subroutine of FIG. 3 is once ended, and the process returns to the main routine of FIG.

  If it is determined in step M107 of the main routine in FIG. 2 that the illumination mode is not the spot illumination mode, the set illumination mode is the blur illumination mode. The condition setting process is executed (step M109).

  FIG. 4 is a subroutine showing the detailed contents of the condition setting process in the blurred illumination mode. At the beginning of the subroutine processing, the CPU 29 reads selection setting information of the projection image for illumination stored in advance in the program memory 31 (step S201).

  The CPU 29 determines whether or not an instruction for the shape of the projection image is given from the read setting information (step S202). When it is determined that the setting for instructing the shape is made, the CPU 29 stores the image information for illumination of the image shape (for example, “circular”) according to the instruction in the illumination image storage unit 31A. A plurality of illumination image information are selected (step S203).

  If it is determined in step S202 that the shape instruction is not set, the CPU 29 stores the default shape, for example, oval illumination image information corresponding to the aspect ratio of the display element in the illumination image storage unit 31A. Selection is made from among a plurality of stored illumination image information (step S204).

  When the illumination image information is selected in step S203 or S204, the CPU 29 next determines how much the blurring degree on the peripheral side is to be reflected by reflecting the preset contents (step S205).

  Subsequently, the CPU 29 reads information on the optical system set in advance in the blur illumination mode (step S206), and sets the zoom lens in the projection lens unit 18 by driving the lens motor 19 based on the read information. The zoom angle of view is moved (step S207).

  Here, because of the nature of blur illumination, the zoom angle of view is moved to the maximum angle of view, as will be described in detail later.

At the same time, the CPU 29 moves the focus lens in the projection lens unit 18 by driving the lens motor 19 based on the distance information to the projection plane acquired in step M103 of the main routine (step S208).
Here, due to the nature of blur illumination, the focus is moved so as to be in an out-of-focus state, as will be described in detail later.

  Thus, the subroutine of FIG. 4 is temporarily terminated, and the process returns to the main routine of FIG.

  In the main routine of FIG. 2, the projection or illumination operation is performed according to the normal projection mode condition set in step M106, the spot illumination mode condition set in step M108, or the blur illumination mode condition set in step M109. Is executed (step M110).

  FIG. 5 illustrates the illumination operation in the spot illumination mode. FIG. 5A illustrates a state in which only the circular area SA11 corresponding to the periphery of the subject OJ1 is illuminated in white in the projection image IA11 with the extracted subject OJ1 as the center, and the others are black (no illumination). Indicates.

  By moving the zoom lens of the projection lens unit 18 according to the size of the subject OJ1 and narrowing the projection angle of view, the range of the entire projection image IA12 is narrowed as shown in FIG. At this time, the circular area SA12 including the subject OJ1 is relatively enlarged, and as a result, the same size as the circular area SA11 shown in FIG. 5A is maintained, and the entire projection image IA12 is maintained. Since the ratio of the size of the circular area SA12 in the area SA12 is increased, the luminance of the light source unit 16 is effectively used in the area SA12, and the area is illuminated brighter.

  Further, in FIG. 5C, by measuring the distance to the projection surface and the subject OJ1, the focus lens position of the projection lens unit 18 is adjusted to accurately focus on the projection surface, so that the circular range SA13 can be seen from the surroundings. It is possible to clearly distinguish and illuminate the subject OJ1 so that it stands out.

  FIG. 6 is a diagram for explaining the tracking operation of the subject position in the spot illumination mode. In this example, in the projection image IA31 that follows the position of the subject OJ3 extracted from the table TB and narrows the zoom position to the range including the subject OJ3, only the oval range SA31 corresponding to the periphery of the subject OJ3 is white. Illuminates with, and the others are black (not illuminated).

  FIG. 7 illustrates the illumination operation in the blur illumination mode. FIG. 7A shows a case where an ellipse is instructed as a shape in the projection image IA21. FIG. 6A shows a projected image IA21 in which gradation is drawn so that the luminance decreases as the plurality of ellipses concentrically goes outward.

  By moving the zoom lens of the projection lens unit 18 to widen the projection angle of view, the range of the entire projection image IA22 is widened as shown in FIG. 7B.

  Further, in FIG. 7C, the focus lens position of the projection lens unit 18 is adjusted and moved so as to be in focus on the farthest side, and the intentionally blurred projection image IA23 is obtained. It is possible to realize a naturally blurred lighting.

  While performing the projection operation in the mode set in any of the normal projection mode, the spot illumination mode, and the blur illumination mode as described above, the user is also instructed from the operation unit 32 by any key operation or gesture. If there is no operation or instruction, the projection and illumination operations in step M110 are continued.

  In this operation state, when a key operation signal is input from the operation unit 32 or a gesture instruction is recognized, the CPU 29 determines this in step M111, and first the key operation or gesture instruction turns off the power. It is determined whether or not the instruction is for instructing (step M112).

  If it is determined that the power supply is instructed to be turned off, the CPU 29 performs a series of power-off operations from storing various setting states to stopping the power supply to some circuits other than the next power-on. After executing the process (step M113), the process returns to the process from step M101.

  If it is determined in step M112 that power-off is not instructed, the CPU 29 next determines whether or not a mode change is instructed (step M114). If it is determined that the mode change has been instructed, the CPU 29 performs the mode state change setting in accordance with the operated key operation signal or the gesture instruction (step M115), and then returns to the processing from step M110.

  If it is determined in step M114 that the mode change is not instructed, the CPU 29 next determines whether or not the key operation signal or gesture instruction is for instructing to change the illumination setting (step M116).

  If it is determined that the operation is an operation for instructing to change the illumination setting or a gesture instruction, the CPU 29 executes a process for changing an optional item of the illumination setting in accordance with the user's key operation or gesture instruction (step M117).

  With regard to this illumination setting change, in the spot illumination mode, for example, whether or not the subject shape follows (default), the shape of the illumination image (frame image) when there is no subject shape tracking (circle (default), ellipse, rectangle) , Star shape ...), whether subject color is reflected, lighting color when subject color is not reflected (inside frame color (white (default), blue, ...)), outside frame color (black (default) ), Yellow,..., Selection of the degree of blur around the image for illumination (none (default), weak, medium, strong), presence / absence of tracking of the zoom angle according to the subject, zooming according to the subject Zoom angle of view (maximum wide angle, wide angle, medium, telephoto, maximum telephoto) and focus position for the subject (most recently out of focus, in focus (default), farthest out of focus) And brightness (dark, medium, light (default ) Including the selection and the like.

  In addition, regarding the change of the illumination setting in the blur illumination mode, the selection of the frame shape of the illumination image (circle, ellipse (default), ...), the illumination color of the illumination image (inside frame color (white (default)) , Blue, ...), out-of-frame color (black (default), yellow, ...), selection of blurring level (low, medium (default), strong) around the lighting image, zoom angle of view ( Selection of the widest angle (default), wide angle, medium, telephoto, and maximum telephoto), selection of the focus position on the projection plane (most recently out-of-focus state, in-focus state, farthest out-of-focus state (default)), and brightness ( Includes selection of dark (default), medium, bright).

  The contents described in parentheses and the default settings are specific examples and can be arbitrarily set.

  When the illumination setting changing process is executed, the CPU 29 stores the contents of the changed illumination setting in the program memory 31 (step M118), and then uses the changed illumination setting. The process returns to step M110.

  On the other hand, when it is determined that the content of the key operation or gesture instruction in step M116 is not a change in the lighting setting, the CPU 29 executes other processing corresponding to the content of the key operation or gesture instruction (step M119). Then, the process returns to step M110.

  As described above in detail, according to the present embodiment, a driving mechanism for a projection optical system (a zoom function, a focus adjustment function, a shift mechanism, etc.) used for projection can be used in the illumination mode. It becomes possible to use it as lighting that matches the situation with variations.

  In addition, in the above embodiment, a plurality of illumination modes are provided, and any one of them can be selected to enable illumination. Therefore, any illumination mode can be selected and illuminated according to the situation and preference. It becomes.

  In the above-described embodiment, the shape of the subject within the illumination range is recognized in the spot illumination mode, and the spot light having a shape matching the shape is selected or created. Effective lighting can be realized.

  Furthermore, in the above-described embodiment, the color used for illumination can be set by recognizing the color of the subject. For example, a suitable spot effect can be achieved by illuminating with a color that reflects the color of the subject. it can.

  In the above-described embodiment, illumination using a test image is performed as preliminary illumination at the beginning of setting, so that the shape and color of the subject can be accurately recognized and utilized for appropriate illumination.

  Furthermore, in the above embodiment, the positions of the zoom lens and focus lens of the lens optical system constituting the projection lens unit 18 are controlled in accordance with the illumination mode. It can be used effectively to achieve more diverse and expressive lighting.

  In particular, in the above embodiment, a natural blur effect due to the out-of-focus state can be produced, such as intentionally positioning the focus lens at the farthest or nearest side in the blur illumination mode.

  Further, in the above embodiment, the illumination with the projection angle of view suitable for the illumination mode is performed by the zoom lens of the lens optical system that constitutes the projection lens unit 18 in particular. For example, in the spot illumination mode, the light source unit 16 emits light. By effectively using light, it is possible to realize illumination with brighter illumination light in accordance with a required illumination range, and effective illumination can be performed with an angle of view suitable for the illumination mode.

  In the above embodiment, the case where the present invention is applied to a ceiling-mounted illumination and projector apparatus adopting the DLP (registered trademark) system has been described. However, the present invention is a projector system, an installation place, and light emission of a light source. The configuration of the elements and various sensors is not limited.

  In addition, the present invention is not limited to the above-described embodiments, and various modifications can be made without departing from the scope of the invention in the implementation stage. Further, the functions executed in the above-described embodiments may be combined as appropriate as possible. The above-described embodiment includes various stages, and various inventions can be extracted by an appropriate combination of a plurality of disclosed constituent elements. For example, even if several constituent requirements are deleted from all the constituent requirements shown in the embodiment, if an effect is obtained, a configuration from which the constituent requirements are deleted can be extracted as an invention.

Hereinafter, the invention described in the scope of claims of the present application will be appended.
The invention according to claim 1 is a projection optical system that uses a light source, an input means for inputting an image signal, and a light from the light source to form and project an optical image corresponding to the image signal input by the input means. And a projection mode for forming and projecting a light image corresponding to an image signal input by the input unit, and an illumination mode for performing illumination using light from the light source are selectively set. A mode setting unit, an image storage unit that stores an image signal for illumination, and an illumination mode signal set by the mode setting unit, the illumination image signal is read from the image storage unit and replaced with the image signal input by the input unit. An image control means for projecting a light image corresponding to the illumination image signal by the projection means, a distance measuring means for measuring the distance to the projection target by the projection means, and an illumination mode by the mode setting means. To de setting, based on the distance to the projection target obtained in the above distance measuring means, the projection mode of the projection optical system of the projection means is characterized by comprising an optical control means for adjusting the different states.

  According to a second aspect of the present invention, in the first aspect of the invention, the optical control means is different in at least one of a projection field angle, a focus and a shift mechanism of the projection optical system of the projection means in the projection mode. It is characterized by adjusting to the state.

  The invention described in claim 3 is the invention described in claim 1 or 2, characterized in that the illumination mode set by the mode setting means includes a plurality of illumination modes.

  According to a fourth aspect of the present invention, in the invention of the third aspect, the image storage means stores a plurality of illumination image signals, and the image control means performs the lighting mode setting by the mode setting means. The illumination image signal corresponding to the illumination mode set from the image storage means is read out, and a light image corresponding to the illumination image signal is projected by the projection means.

  The invention according to claim 5 is the invention according to any one of claims 1 to 4, further comprising imaging means for imaging a projection target surface onto which a light image is projected by the projection means.

  The invention according to claim 6 further comprises shape recognition means for recognizing the shape of the subject from the image of the projection target surface obtained by the imaging means in the invention according to claim 5, wherein the image control means comprises: When the illumination mode is set by the mode setting means, the illumination image signal corresponding to the shape of the subject recognized by the shape recognition means is read, and the light image corresponding to the illumination image signal is projected by the projection means. It is characterized by.

  According to a seventh aspect of the present invention, in the sixth aspect of the invention, the image control unit further includes an image generation unit that generates an illumination image signal corresponding to the shape of the subject recognized by the shape recognition unit. If the image storage means does not have an illumination image signal corresponding to the shape of the subject recognized by the shape recognition means, the projection means projects a light image corresponding to the illumination image signal created by the image creation means. It is characterized by making it.

  The invention according to claim 8 is the invention according to claim 6 or 7, wherein the projection means includes a projection optical system capable of adjusting a projection angle of view, and the optical control means is recognized by the shape recognition means. Based on the shape of the subject, the projection optical system of the projection unit is adjusted to a different projection angle of view in the projection mode.

  The invention according to claim 9 is the invention according to any one of claims 5 to 8, further comprising color recognition means for recognizing the color of the subject from the image of the projection target surface obtained by the imaging means. When the illumination mode is set by the mode setting unit, the control unit reads the illumination image signal corresponding to the color of the subject recognized by the color recognition unit, and the projection unit outputs an optical image corresponding to the illumination image signal. Is projected.

  According to a tenth aspect of the present invention, in the invention according to any one of the fifth to ninth aspects, the image storage means is a test for determining the shape or color of the subject on the projection target surface onto which the light image is projected by the projection means. An image signal for illumination is stored, and the image control unit reads the image signal for test illumination from the image storage unit when an image of the projection target surface is captured by the imaging unit, and the image signal for test illumination is read by the projection unit. A corresponding light image is projected.

  According to an eleventh aspect of the invention, in the invention according to any one of the third to tenth aspects, the optical control means projects the projection means according to the set illumination mode when the illumination mode is set by the mode setting means. The optical system is adjusted to different states.

  According to a twelfth aspect of the present invention, in the invention according to any one of the first to eleventh aspects, the projection unit includes a projection optical system capable of adjusting a focus, and the optical control unit performs the projection when setting an illumination mode. The projection optical system of the means is adjusted to an out-of-focus state.

  A thirteenth aspect of the invention includes a light source, an input unit that inputs an image signal, and a projection optical system that uses the light from the light source to form and project a light image according to the image signal input from the input unit. A projection control method using an apparatus having a projection unit, wherein a projection mode for forming and projecting a light image according to an image signal input by the input unit, and illumination using light from the light source A mode setting step for selectively setting the illumination mode, and an image input by the input unit by reading the illumination image signal from the image storage unit for storing the illumination image signal when the illumination mode is set by the mode setting step. An image control step of projecting a light image according to the illumination image signal by the projection unit instead of a signal, a distance measurement step of measuring a distance to a projection target by the projection unit, and an illumination mode by the mode setting step Scheduled to, based on the distance to the projection target obtained in the above ranging procedure, the projection mode of the projecting optical system of the projection portion is characterized by having an optical control step of adjusting to a different state.

  The invention described in claim 14 includes a light source, an input unit for inputting an image signal, and a projection optical system that uses the light from the light source to form and project a light image according to the image signal input by the input unit. A program executed by a computer built in an apparatus having a projection unit, wherein the computer forms and projects a light image according to an image signal input by the input unit, and a projection from the light source. Mode setting means for selectively setting an illumination mode in which illumination is performed using light, and when the illumination mode is set by the mode setting means, the illumination image signal is read out from an image storage unit that stores the illumination image signal, and Image control means for projecting a light image corresponding to the illumination image signal by the projection unit instead of the image signal input by the input unit, and distance measurement for measuring the distance to the projection target by the projection unit And an optical control unit that adjusts the projection optical system of the projection unit to a different state in the projection mode based on the distance to the projection target obtained by the ranging unit when the illumination mode is set by the mode setting unit. It is made to function.

  DESCRIPTION OF SYMBOLS 10 ... Lighting projector, 11 ... Wireless LAN antenna, 12 ... Wireless LAN interface (I / F), 13 ... Input part, 14 ... Projection image drive part, 15 ... Micromirror element, 16 ... Light source part, 17 ... Mirror, 18 DESCRIPTION OF SYMBOLS ... Projection lens part, 19 ... Lens motor (M), 20 ... Shooting lens part, 21 ... CMOS image sensor, 22 ... A / D converter, 23 ... Shooting image processing part, 24 ... Lens motor (M), 25 ... Lens, 26 ... Infrared sensor, 27 ... Lens, 28 ... Illuminance sensor, 29 ... CPU, 30 ... Main memory, 31 ... Program memory, 31A ... Illumination image storage unit, 31B ... Gesture content storage unit, 32 ... Operation unit, 33 ... Audio processing unit, 34 ... Speaker unit, SB ... System bus.

Claims (14)

A light source;
An input means for inputting an image signal;
A projection unit including a projection optical system that uses the light from the light source to form and project a light image according to an image signal input by the input unit;
A mode setting means for selectively setting a projection mode for forming and projecting a light image according to an image signal input by the input means, and an illumination mode for performing illumination using light from the light source;
Image storage means for storing an image signal for illumination;
When the illumination mode is set by the mode setting unit, the illumination image signal is read from the image storage unit, and a light image corresponding to the illumination image signal is projected by the projection unit instead of the image signal input by the input unit. Image control means for causing
Distance measuring means for measuring the distance to the projection target by the projection means;
Optical control means for adjusting the projection optical system of the projection means to a different state in the projection mode based on the distance to the projection target obtained by the distance measurement means when the illumination mode is set by the mode setting means. A projection apparatus characterized by that.   The projection apparatus according to claim 1, wherein the optical control unit adjusts at least one of a projection field angle, a focus, and a shift mechanism of the projection optical system of the projection unit to a different state in the projection mode.   The projection apparatus according to claim 1, wherein the illumination mode set by the mode setting means includes a plurality of illumination modes. The image storage means stores a plurality of illumination image signals,
The image control means reads the illumination image signal corresponding to the illumination mode set from the image storage means when the illumination mode is set by the mode setting means, and the projection means responds to the illumination image signal. The projection apparatus according to claim 3, wherein an optical image is projected.   The projection apparatus according to claim 1, further comprising an imaging unit that captures a projection target surface onto which a light image is projected by the projection unit. Further comprising shape recognition means for recognizing the shape of the subject from the image of the projection target surface obtained by the imaging means,
The image control means reads the illumination image signal corresponding to the shape of the subject recognized by the shape recognition means when the illumination mode is set by the mode setting means, and the projection means responds to the illumination image signal. The projection apparatus according to claim 5, wherein an optical image is projected. Further comprising image creating means for creating an image signal for illumination according to the shape of the subject recognized by the shape recognizing means,
When the image storage means does not have an illumination image signal corresponding to the shape of the subject recognized by the shape recognition means, the image control means responds to the illumination image signal created by the image creation means by the projection means. The projection apparatus according to claim 6, wherein an optical image is projected. The projection means includes a projection optical system whose projection angle of view is adjustable,
The optical control means adjusts the projection optical system of the projection means to a different projection angle of view in the projection mode based on the shape of the subject recognized by the shape recognition means. The projection device described. A color recognition means for recognizing the color of the subject from the image of the projection target surface obtained by the imaging means;
The image control means reads the illumination image signal corresponding to the color of the subject recognized by the color recognition means when the illumination mode is set by the mode setting means, and the projection means responds to the illumination image signal. The projection apparatus according to claim 5, wherein an optical image is projected. The image storage means stores a test illumination image signal for determining the shape or color of the subject on the projection target surface onto which the optical image is projected by the projection means,
The image control unit reads a test illumination image signal from the image storage unit when an image of the projection target surface is captured by the imaging unit, and causes the projection unit to project a light image corresponding to the test illumination image signal. The projection apparatus according to claim 5, wherein:   11. The optical control unit adjusts the projection optical system of the projection unit to a different state according to the set illumination mode when the illumination mode is set by the mode setting unit. Projection device. The projection means includes a projection optical system capable of adjusting the focus,
The projection apparatus according to claim 1, wherein the optical control unit adjusts the projection optical system of the projection unit to an out-of-focus state when setting an illumination mode. An apparatus including a light source, an input unit for inputting an image signal, and a projection unit including a projection optical system that forms and projects a light image corresponding to the image signal input from the input unit using light from the light source. A projection control method,
A mode setting step for selectively setting a projection mode for forming and projecting a light image according to an image signal input by the input unit, and an illumination mode for performing illumination using light from the light source;
When the illumination mode is set by the mode setting step, the illumination image signal is read from the image storage unit that stores the illumination image signal, and the projection unit converts the illumination image signal into the illumination image signal instead of the image signal input by the input unit. An image control step of projecting a corresponding light image;
A distance measuring step for measuring the distance to the projection target by the projection unit;
An optical control step of adjusting the projection optical system of the projection unit to a different state in the projection mode based on the distance to the projection target obtained in the ranging step when the illumination mode is set by the mode setting step. A projection control method characterized by that. An apparatus including a light source, an input unit for inputting an image signal, and a projection unit including a projection optical system that forms and projects a light image according to the image signal input from the input unit using light from the light source. A program executed by a built-in computer,
The computer
Mode setting means for selectively setting a projection mode for forming and projecting a light image according to an image signal input by the input unit, and an illumination mode for performing illumination using light from the light source;
When the illumination mode is set by the mode setting means, the illumination image signal is read from the image storage unit that stores the illumination image signal, and the projection unit converts the illumination image signal into the illumination image signal instead of the image signal input by the input unit. Image control means for projecting a corresponding light image,
A distance measuring unit that measures the distance to the projection target by the projection unit, and a projection optical system of the projection unit based on the distance to the projection target obtained by the distance measurement unit when setting the illumination mode by the mode setting unit. A program which functions as an optical control means for adjusting to a different state in the projection mode.

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