JP2006153936A - Planetarium apparatus - Google Patents

Abstract

<P>PROBLEM TO BE SOLVED: To provide a planetarium apparatus which lightens up the burden of operation on an operator, does not spoil a powerful projection image by an electronic projector, and keeps the beauty of a stellar image by an optical projector. <P>SOLUTION: The planetarium apparatus 100 in which the electronic projector and optical projector cooperate with each other is such that the projection contents of the optical projector 20 can be changed through an operation section 5. An integrated control section 2 controls the quantity of light from the optical projector 20 according to an indication from the operation section 5. Further, the integrated control section 2 instructs an electronic drive control section 3 to open and close a motor-driven stop 11 as the quantity of light from the optical projector 20 is varied. Namely, the quantity of light from the electronic projector 10 is automatically controlled associatively with the change of the projection contents of the optical projector 20. <P>COPYRIGHT: (C)2006,JPO&NCIPI

Description

  The present invention relates to an integrated planetarium apparatus including an electronic projector and an optical projector. In this specification, the planetarium refers to a facility for projecting an image on a dome-shaped screen, and the content of the image is not limited to Hoshino but may be entertainment-type.

  Conventionally, there are known planetarium devices (multi-lens type) in which multiple electronic projectors are arranged around the dome and the output images of those projectors are joined together and projected onto the dome screen. . In addition, a single electronic projector having a fisheye lens that can project an image on the entire dome screen (monocular type, for example, Patent Document 1) has been put into practical use.

As the above-described electronic projectors, video projectors such as liquid crystal, DLP, and DILA are used because of their advantages such as low price, easy availability, small size, and high brightness. These video projectors have high brightness, but have the disadvantage of impairing the blackness on the dome screen. This is because it is difficult to completely shut off the backlight, and the black reproducibility is limited. On the other hand, in an optical projector that projects light from a light source as a star image via a stellar original plate or an optical lens, light other than the star image is ideally blocked. Therefore, high contrast between the star image and other parts can be realized without impairing the blackness, and a beautiful star image with an immersive feeling can be projected. Therefore, in recent planetarium devices, various computer graphic images related to astronomical images and constellations are projected by electronic projectors such as video projectors, while beautiful star images are projected by optical projectors. A so-called integrated planetarium apparatus (for example, Patent Document 2) has been proposed.
US Pat. No. 5,762,413 Japanese Patent Laid-Open No. 10-123938

  However, the above-described integrated planetarium apparatus has the following problems. In other words, if the image of the electronic projector is superimposed on the star image of the optical projector and projected, the star image of the optical projector will be glazed by the black float (slight amount of light) generated by the electronic projector. There is. In other words, a beautiful star image cannot be projected on the dome screen, resulting in an unsightly projection state. In other words, when a star image is projected by an optical projector, if the black level is displayed by the projection of an electronic projector, the star image is glazed. For this reason, it was difficult to provide a beautiful Hoshino image that impressed the audience because the sense of immersion was impaired.

  Also, if the brightness of the electronic projector image is lowered from the beginning, a dark image will be projected even when the star image is not projected by the optical projector, providing a powerful image I can't do that.

  In addition, it is possible with a conventional planetarium device to manually adjust the light quantity of the electronic projector by the operation of the operator. However, controlling the projection contents of the optical projector while adjusting the light quantity of the electronic projector requires an operator's skill and is difficult for an unfamiliar operator.

  The present invention has been made to solve the problems of the conventional integrated planetarium device described above. In other words, the issue is a planetarium device in which an electronic projector and an optical projector collaborate, the operation burden on the operator is light, the powerful projection image by the electronic projector is not impaired, and , To provide a planetarium device that does not impair the beauty of the star image of an optical projector.

  The planetarium apparatus made for the purpose of solving this problem includes an optical projector that projects a star image by light transmitted through a star projection original plate, and an electronic projector that projects an electronic image generated by a computer. It is a planetarium device, and the amount of light projected from an optical projector (hereinafter referred to as “light amount from an optical projector”) and the amount of light projected from an electronic projector (hereinafter referred to as “electronic type”). The light quantity control means controls the light quantity from the electronic projector in conjunction with the increase in the light quantity from the optical projector. It is characterized in that the amount of light from the electronic projector is increased in conjunction with a decrease in the amount of light from the projector.

  In other words, the planetarium apparatus of the present invention projects a star image with an optical projector that does not float black, and an electronic projector that can project an electronic image. It is an integrated planetarium device that projects auxiliary images. And the light quantity control means which controls the light quantity from each projector for every projector is provided.

  In the planetarium device, for example, it is possible to produce an effect related to time changes such as a star gradually appearing from evening to night, or an effect such that a daytime star image appears in a pseudo manner. Therefore, in order to enable these effects, the brightness of the star by the optical projector is made variable, and the brightness, that is, the amount of light from the optical projector is controlled by the light amount control means. Further, the amount of light from the electronic projector is increased or decreased in conjunction with the increase or decrease of the amount of light from the optical projector. In other words, the brightness of the image projected from the electronic projector is automatically controlled according to the brightness of the star. As means for controlling the brightness, for example, an aperture mechanism is provided in each projector, or the energy supplied to the light source of each projector is variable.

  As the control of the light amount, for example, when performing the above-described time change effect, the light amount from the electronic projector is decreased as the light amount from the optical projector is increased. Furthermore, the amount of light from the electronic projector is increased as the amount of light from the optical projector decreases. For example, the same control is performed when the above-mentioned daytime star image is produced. In the planetarium apparatus of the present invention, such effects can be automatically performed by the light quantity control means. Therefore, the operation burden on the operator is reduced. Therefore, the operator can perform a smooth operation without causing discomfort to the audience.

  As described above, in the planetarium apparatus of the present invention, the amount of light from the electronic projector is controlled in accordance with the projection contents of the optical projector. Therefore, when the spectator is observing a star image, the amount of light from the electronic projector is reduced as much as possible to suppress black float. That is, the light quantity control means performs control to suppress the light quantity from the electronic projector if the light quantity from the optical projector is equal to or greater than a predetermined value. As a result, a beautiful star image is projected by the optical projector. Then, if necessary, the amount of light from the electronic projector is increased to provide powerful projection images. Note that when projecting a supplementary supplementary image, the audience sees the supplementary supplementary image, so even if there is a slight black float, the sense of presence and immersion are not impaired.

  Another planetarium apparatus of the present invention is a planetarium apparatus including an optical projector that projects a star image by light transmitted through a star projection original plate, and an electronic projector that projects an electronic image generated by a computer. The observation time changing means for instructing the advancement or retraction of the observation time, and the light quantity control means for controlling the light quantity from the optical projector and the light quantity from the electronic projector. The amount of light from each projector is gradually increased or decreased according to the advance or retreat of the observation time by the observation time changing means. In other words, the projection content of the optical projector is changed in conjunction with the change in the observation time, and the light quantity from the optical projector or the electronic projector is controlled in conjunction with the change. Also good.

  For example, the light quantity control means gradually increases the light quantity from the optical projector and the light quantity from the electronic projector according to the progress of the observation time when each projector switches from daytime video to nighttime video. It is better to gradually decrease. As a result, as the time advances, it is possible to automate the production of crossfading the video from the blue sky to the night sky from the image of the electronic projector to the image of the optical projector. It is possible to achieve a realistic star image.

  In addition, the “observation time” in this specification is the time when the hoshino observation is performed in the direction of the planetarium, and not the actual time.

  Another planetarium apparatus of the present invention is a planetarium apparatus including an optical projector that projects a star image by light transmitted through a star projection original plate, and an electronic projector that projects an electronic image generated by a computer. A light amount adjusting means for instructing increase / decrease of the light amount from the optical projector, and a light amount control means for controlling the light amount from the optical projector and the light amount from the electronic projector. Is characterized in that the amount of light from the electronic projector is increased or decreased in conjunction with the increase or decrease of the amount of light by the light amount adjusting means. That is, the amount of light from the electronic projector is controlled in conjunction with the brightness adjustment of the star of the optical projector. This is particularly effective in the effect of artificially projecting a star image during the daytime. It increases the amount of light from the optical projector and at the same time decreases the amount of light from the electronic projector. This allows the operator to crossfade from the image of the electronic projector to the image of the optical projector simply by adjusting the amount of light from the optical projector without adjusting the amount of light from the electronic projector. Can be made.

  Another planetarium apparatus of the present invention is a planetarium apparatus including an optical projector that projects a star image by light transmitted through a star projection original plate, and an electronic projector that projects an electronic image generated by a computer. An auxiliary image instruction means for instructing projection of an auxiliary image for assisting the explanation of Hoshino with an electronic projector, and a light amount control means for controlling the amount of light projected from the electronic projector. The light quantity control means increases or decreases the quantity of light projected from the electronic projector in accordance with the auxiliary image projection instruction from the auxiliary image instruction means. That is, the light quantity from the electronic projector is controlled in conjunction with the auxiliary image projection instruction by the auxiliary image instruction means, in other words, in conjunction with the auxiliary image projection by the electronic projector. As a result, the operator can fade in or fade out the auxiliary image by simply instructing the projection of the auxiliary image without adjusting the amount of light from the electronic projector.

  Specifically, the light quantity control means increases the quantity of light projected from the electronic projector in conjunction with the auxiliary image projection instruction by the auxiliary image instruction means when the star image is projected by the optical projector. The amount of light projected from the electronic projector is reduced in conjunction with the auxiliary image projection cancellation instruction. In other words, the amount of light projected from an electronic projector is controlled by the combination of an object projected from an optical projector or an object projected from an optical projector and an object projected from an electronic projector. To do. Objects projected from the optical projector are stars that are projected by the optical projector, and objects projected from the electronic projector are celestial objects such as constellation pictures, constellation lines, and planetary images, photographs, and videos. And so on.

  Further, it is better that the light quantity control means defines the light quantity value according to the content of the auxiliary image projection instruction. That is, when projecting a constellation picture or constellation line, it is preferably superimposed on a star, so it is preferable to reduce the amount of light so that the black float is not noticeable. On the other hand, when projecting a magnified image of the planet, the image itself is bright, so there is no need to suppress the black float, and the image becomes clear due to the large amount of light. Therefore, by automatically controlling the amount of light from the electronic projector according to the content of the auxiliary image to be projected, a more effective presentation can be achieved without increasing the operation burden.

  According to the present invention, the light quantity of the electronic projector is automatically adjusted according to the projection content of the optical projector. When projecting star images, the light quantity of the electronic projector is suppressed. Therefore, it is a planetarium device in which an electronic projector and an optical projector cooperate. The operation burden on the operator is light, the powerful projection image by the electronic projector is not impaired, and the optical projector A planetarium device is provided that does not impair the beauty of the star image.

  DESCRIPTION OF THE PREFERRED EMBODIMENTS Embodiments embodying the present invention will be described below in detail with reference to the accompanying drawings. In the present embodiment, the present invention is applied to an integrated planetarium apparatus including an electronic projector and an optical projector.

[First embodiment]
As shown in FIG. 1, a planetarium apparatus 100 according to a first embodiment includes a dome screen 1, an optical projection apparatus 20 installed below the center thereof, and an electronic type disposed at a position adjacent to the optical projection apparatus 20. A projector 10 and an operation unit 5 for operating the content of the projection are provided. Further, in the planetarium apparatus 100 of the present embodiment, as shown in FIG. Further, the electronic drive control unit 3 performs opening / closing control of an electric diaphragm provided in the electronic projector 10. Further, the video generation unit 4 generates a digital video projected by the electronic projector 10. The integrated control unit 2 also outputs a control command to the electronic drive control unit 3 and the video generation unit 4.

  As shown in FIG. 3, the operation unit 5 includes a monitor unit 51 for providing a graphical user interface, an operation console 52 provided with various switches or volumes, an input device (not shown) such as a joystick and a mouse, and the like. It has. An example of the monitor unit 51 is a touch panel. The operation unit 2 enables selection of an explanation auxiliary image and execution operation of an auto program.

  Further, the operation unit 5 has a function of controlling the time, and the time can be virtually advanced or retreated from the blue sky to twilight, sunset, sunset, starry sky, sunrise, sunrise, blue sky. In this time change function, the sky is darkened by sunset, that is, the video from the electronic projector 10 is faded out, and the star image from the optical projector 20 is faded in. Thereby, switching between daytime and nighttime is performed smoothly.

  In addition, the operation unit 5 has a star dimming function, and the brightness of the star image projected by the optical projector 20 can be freely changed. In this dimming function, when the star image is brightened to some extent, that is, when the star image from the optical projector 10 is faded in, the image from the electronic projector 10 is faded out. This makes it possible to project daytime star images in a simulated manner.

  It should be noted that the change in time and the adjustment of the brightness of the star can be manually changed by a time volume and a dimming volume provided on the console 52 as shown in FIG. In addition, what can be selected by the monitor unit 51 of the operation unit 5 includes observation time and observation place as well as so-called explanation auxiliary images such as constellation picture, constellation line, polar coordinate line and the like. To set the observation time, enter the date and time. To set the observation location, enter the latitude and longitude. In addition, the observation time and the observation location can be changed during the demonstration by the operation unit 5.

  The integrated control unit 2 outputs control signals such as stellar dimming, multi-axis drive, up-and-down operation of the unit, and electronic shutter to the optical projector 20 in accordance with a command transmitted from the operation unit 5. Also, some astronomical data is stored in advance, and based on the observation time and observation place set by the operation unit 5, celestial images such as stars, planets, and satellites that should be visible on the observation ground are extracted. Furthermore, supplementary images such as constellation information are extracted. Then, the information of the extracted celestial body or explanation auxiliary image is output to the video generation unit 4. The video generation unit 4 creates a video to be projected on the dome screen 1 based on the sent astronomical information, and outputs it to the electronic projector 10 as a video signal. Further, the integrated control unit 2 outputs a control command for controlling the amount of light from the electronic projector 10 to the electronic drive control unit 3. Details of the light amount control will be described later.

  The electronic projectors 11 to 16 receive digital images such as sunset / sunrise images and commentary auxiliary images via RGB video elements and fisheye lenses with an angle of view of 160 degrees or more according to video signals transmitted from the video generation units. It is projected on the dome screen 1. Specifically, video projectors such as liquid crystal, DLP, and DILA are applicable.

  As a specific example of the electronic projector, a structure of a three-plate video projector is illustrated. The electronic projector 10 shown in FIG. 5 forms a light source 101 that emits white light, total reflection mirrors 102 and 108, dichroic mirrors 103 and 104 that separate the three primary colors RGB, and an optical image of red light. An R image element 105, a G image element 106 that forms an optical image of green light, a B image element 107 that forms an optical image of blue light, and a dichroic prism 109 that synthesizes optical images of RGB colors. Yes. For the light source 101, for example, a metal halide lamp with a reflector is used. The dichroic mirror 103 transmits the light beam of the red light R and reflects the light beams of the green light G and the blue light B. Further, the dichroic mirror 104 reflects the green light G light beam among the green light G and blue light B light beams reflected by the dichroic mirror 103 and transmits the blue light B light beam.

  The electronic projector 10 also includes a first projection optical system 12 and a second projection optical system 13 for projecting the optical image synthesized by the dichroic prism 109 onto the dome screen 1, and further includes a first projection optical system. An electric diaphragm 11 that can be electrically opened and closed is disposed between the system 12 and the second projection optical system 13.

  As shown in FIG. 6, the electric diaphragm 11 includes a rotating gear 114 that is rotatably supported, shielding blades 111 to 113 that are rotationally driven by the rotating gear 114, and a motor 115 that drives the rotating gear 114. Yes. In the electric diaphragm 11, three shielding blades 111 to 113 having the same shape are sequentially stacked, and the opening 110 is narrowed to a desired diameter by simultaneously rotating the shielding blades 111 to 113. Can do. In FIG. 7, (A) shows a fully opened state, and (B) shows a closed state. By opening and closing the electric diaphragm 11, the amount of light projected from the electronic projector 10 can be adjusted.

  The electronic projector 10 shown in FIG. 5 and the electric diaphragm 11 shown in FIG. 6 are merely examples, and are not limited to this device configuration.

  The optical projector 20 mainly includes a light source, a star original plate, a projection lens, an optical fiber, and a plurality of shaft drive systems. Details of the optical projector 20 are disclosed in, for example, Japanese Patent Laid-Open Nos. 2001-109063 and 2001-109371. Then, according to the control instructions such as stellar dimming, multi-axis drive, vertical movement of this machine, electronic shutter, etc. transmitted from the integrated control unit 2, motion simulation such as daily or annual is performed, and the star image or planetary image is displayed on the dome screen. Projected on top of 1. Further, the amount of light projected from the optical projector 20 can be adjusted in accordance with a control command transmitted from the integrated control unit 2.

  Next, the opening / closing control of the electric diaphragm 11 of the electronic projector 10, that is, the light amount control of the electronic projector 10 will be described with the planetarium apparatus 100 of the present embodiment. In the planetarium apparatus 100 of the present embodiment, it is possible to select whether or not the motorized diaphragm 11 is automatically opened and closed. The situation in which the electric diaphragm 11 is opened and closed includes, for example, an effect in which stars appear gradually from evening to night (that is, when the time volume is rotated), or when the brightness of the star is adjusted (that is, adjustment). (When rotating the optical volume). In addition, explanation assistance may be projected during star image projection. Therefore, the following description will be divided into a case where it is linked to the time volume, a case where it is linked to the dimming volume, and a case where it is linked to the explanation-assisted projection.

  First, the control in the case of interlocking the opening / closing of the electric diaphragm 11 with the time volume will be described. In this control, the motorized diaphragm 11 of the electronic projector 10 is adjusted as the observation time advances or retreats. Specifically, as shown in FIG. 8, a daytime image is projected by the electronic projector 10 from daytime to immediately after sunset (β in FIG. 8), that is, until it reaches a full starry sky. When the time is further advanced, the opening of the electric diaphragm 11 is gradually narrowed, and the video from the electronic projector 10 is faded out. Then, the star image or the planetary image from the optical projector 20 is faded in to crossfade. That is, at night, the electric diaphragm 11 is closed to suppress the black float caused by the electronic projector 10.

  Hereinafter, the opening / closing control of the electric diaphragm 11 during rotation of the time volume will be described based on the flowchart of FIG. This flowchart shows the procedure when the time before rotating the time volume is the daytime time. Therefore, before rotating the time volume, a daytime image is projected by the electronic projector 10, and the electric diaphragm 11 is fully opened.

  First, it is confirmed that rotation of the time volume is started (S1). Next, the value of the aperture interlock flag is confirmed (S2). This aperture interlock flag means that the opening and closing of the electric aperture 11 is manual when the value is 0, and automatic when the value is 1. Therefore, when the value of the aperture interlock flag is 0 (S2: flag = 0), the processing from S3 to S11 is bypassed, and the processing proceeds to S12.

  On the other hand, when the value of the aperture interlocking flag is 1 (S2: flag = 1), it is determined whether or not the time volume is normal rotation (S3). Note that the time volume being forwardly rotated means that the time is advanced. On the other hand, the time volume being reversely rotated means returning the time. If the time volume is forward rotation (S3: YES), the observation time (simulation time) has passed a predetermined time after sunset (β in FIG. 8, hereinafter this time is referred to as “time β”). It waits until it does (S4).

  After the time β has elapsed (S4: YES), the electric throttle 11 is gradually closed (S5). The motorized aperture 11 is completely closed by a predetermined time after time β (time γ in FIG. 8 (hereinafter referred to as “time γ”)). When the motorized aperture 11 is completely closed, black floating by the electronic projector 10 is eliminated, and a jet-black night sky is reproduced.

  The electronic projector 10 projects a daytime video until a predetermined time before sunset (time T0 in FIG. 8 (hereinafter referred to as “time T0”)), and sunsets occur after time T0. Switch to video.

  Further, the optical projector 20 starts projection from a predetermined time after the time T0 and before sunset (time α in FIG. 8 (hereinafter referred to as “time α”)) and gradually. Control to increase the amount of light is performed. As a result, the sunset video image projected by the electronic projector 10 is cross-faded to the star image projected by the optical projector 10. In other words, a full star image is projected on the dome screen 1 on which the jet-black night sky is reproduced.

  Returning to the description of the opening / closing control of the electric diaphragm 11, the process waits until the observation time passes a predetermined time before sunrise (γ ′ in FIG. 8; hereinafter, this time is referred to as “time γ ′”) (S6). ). After the time γ 'has elapsed (S6: YES), the electric diaphragm 11 is gradually opened (S7). The motorized aperture 11 is completely opened by a predetermined time (time β ′ in FIG. 8 (hereinafter referred to as “time β ′”) before sunrise and after time γ ′. As the motorized aperture 11 is gradually closed, the star image from the optical projector 20 becomes invisible and the blue sky is reproduced.

  The electronic projector 10 is basically in a non-projecting state because the motorized diaphragm 11 is closed from time γ to time γ ′. If there is an instruction to project an auxiliary commentary image such as a planet or a constellation picture, the motorized aperture 11 is opened and the image is projected. In addition, if the observation time passes the time γ ′, a morning glow image is projected. The control of the electric diaphragm 11 by the projection of the explanation auxiliary image will be described later.

  Further, the optical projector 20 performs control to gradually reduce the light amount from the time γ ′. As a result, the star image produced by the projection by the optical projector 20 is cross-faded from the sunrise image produced by the projection by the electronic projector 10. Thereafter, the process proceeds to S12.

  On the other hand, when the time volume is reverse rotation (S3: NO), it waits until the observation time goes back to a predetermined time β 'before sunrise (S8). After retreating to time β '(S4: YES), the electric throttle 11 is gradually closed (S9). The electric diaphragm 11 is completely closed by the time γ ′. Then, it waits until observation time goes back to time (gamma) (S10). After retreating to time γ (S10: YES), the electric diaphragm 11 is gradually opened (S11). The motorized aperture 11 is completely opened by time β. That is, the flow control opposite to that performed when the time volume is forward rotation is performed. Thereafter, the process proceeds to S12.

  Note that the optical projector 20 also controls the flow opposite to the processing when the time volume is normal rotation. That is, control is performed to gradually increase the amount of light from time α ′. As a result, the morning glow image produced by the projection by the electronic projector 10 is cross-faded to the star image produced by the projection by the optical projector 20.

  Next, it is confirmed whether or not the rotation of the time volume is stopped (S12). If not stopped (S12: NO), the process returns to the process of S2 and this process is repeated. If it is stopped (S12: YES), this process is terminated. Note that this processing is also ended when the rotation of the time volume is stopped during the standby processing in the processing of S4, S6, S8, and S10. As a result, the control for automatically opening and closing the electric diaphragm 11 of the electronic projector 10 in conjunction with the time volume is realized.

  Next, opening / closing control of the electric diaphragm 11 during rotation of the dimming volume will be described. In this control, the opening amount of the electric diaphragm 11 of the electronic projector 10 is adjusted as the amount of light from the optical projector 20 increases or decreases. Hereinafter, the opening / closing control of the electric diaphragm 11 of the electronic projector 10 will be described based on the flowchart of FIG.

  First, it is confirmed that rotation of the dimming volume is started (S21). Next, the value of the aperture interlock flag is confirmed (S22). When the value of the aperture interlocking flag is 0 (S22: flag = 0), the processing from S23 to S26 is bypassed, and the processing proceeds to S27.

  On the other hand, when the value of the aperture interlocking flag is 1 (S22: flag = 1), it is determined whether or not the dimming volume is normal rotation (S23). In addition, that the light control volume is forward rotation means that the amount of light from the optical projector 10 is increased. On the other hand, that the dimming volume is reversely rotated means that the amount of light is reduced.

  If the dimming volume is forward rotation (S23: YES), it waits until the dimming volume rotates to the predetermined position T (S24). While the dimming volume is rotating forward, the amount of light from the optical projector 20 gradually increases. When the dimming volume is rotated to the position T (S24: YES), the electric diaphragm 11 of the electronic projector 10 is gradually closed (S25). As a result, the image projected by the electronic projector 10 is cross-faded from the image projected by the optical projector 20 to the star image. Thereafter, the process proceeds to S28.

  When the dimming volume is reversely rotated (S23: NO), it waits until the dimming volume rotates to the predetermined position T '(S26). During the reverse rotation of the light control volume, the amount of light from the optical projector 20 gradually decreases. When the dimming volume is rotated to the position T ′ (S26: YES), the electric diaphragm 11 of the electronic projector 10 is gradually opened (S27). As a result, the star image produced by the projection by the optical projector 20 is cross-faded from the image produced by the electronic projector 10. Thereafter, the process proceeds to S28.

  Next, it is confirmed whether or not the rotation of the dimming volume is stopped (S28). If not stopped (S28: NO), the process returns to S22 and this process is repeated. If it has been stopped (S28: YES), this process ends. Note that this process is also terminated when the rotation of the light control volume is stopped during the standby process in the processes of S24 and S26. Thereby, the control which automatically opens and closes the motorized aperture 11 of the electronic projector 10 in conjunction with the dimming volume is realized.

  Next, the control of the motorized diaphragm 11 by the explanation assistance projection will be described. In this control, the motorized aperture 11 of the electronic projector 10 is adjusted in conjunction with the projection or the cancellation of projection of an image (still image) or video (moving image) for assisting explanation. Specifically, when a star image is projected by the optical projector 20 as shown in FIG. Expand and fade in the video to assist commentary. On the other hand, when canceling the explanation-assistant projection, the aperture of the electric diaphragm 11 is narrowed, and the explanation-assistance image is faded out. That is, the motorized aperture 11 is opened when an auxiliary image is projected even at night. In FIG. 11, the broken line indicating the black level means that the higher the higher, the more black is floating.

  Hereinafter, based on the flowchart of FIG. 12, the opening / closing control of the motorized iris 11 at the time of the projection for assisting explanation will be described.

  First, it waits until the projection of the star on the optical projector 20 is instructed (S31). When the star projection is instructed (S31: YES), closing of the electric aperture 11 of the electronic projector 10 is started (S32). That is, the video by the electronic projector 10 and the star image by the optical projector 20 are crossfade.

  Thereafter, when the projection of the constellation picture is instructed (S33: YES), the electric diaphragm 11 is gradually opened (S34). As a result, a constellation picture as an explanation aid is projected on the dome screen 1 from the electronic projector 10. At this time, a slight black float occurs due to the light from the electronic projector 10. However, the immersive feeling is not lost because the audience sees the explanation assistance. Thereafter, when an instruction to cancel the projection of the constellation picture is given (S35: YES), the electric diaphragm 11 is gradually closed (S36). The processing from S33 to S36 is repeated until an instruction to cancel projection of a star is instructed (S37).

  Thereafter, when the instruction to cancel projection of the star is instructed (S37: YES), the motorized aperture 11 is gradually opened (S38). As a result, the image from the electronic projector 10 is projected onto the dome screen 1 and crossfade with the star image from the optical projector 20. After the process of S38, this process ends. As a result, the control for automatically opening and closing the electric diaphragm 11 of the electronic projector 10 in conjunction with the constellation picture projection instruction is realized.

  In addition to the constellation picture, the explanation auxiliary image or the explanation auxiliary image projected from the electronic projector 10 includes, for example, celestial lines, planets, and other celestial bodies, photographs, and moving images. And when performing such projection, the same control as in FIG. 12 is performed. For example, when zooming up the planetary image as shown in FIG. 13, the electronic aperture of the electronic projector 10 is gradually opened in conjunction with the projection instruction of the planetary image as shown in FIG. Further, the electronic aperture of the electronic projector 10 is gradually closed in conjunction with the planetary image projection release instruction. Note that the opening amount of the electric diaphragm 11 varies depending on the object to be projected (explanatory assistance). That is, the amount of light necessary to project each object is provided.

  If the opening amount of the electric diaphragm 11 is defined for each explanation assistance, the opening is made according to the opening amount. For example, as shown in FIG. 11, when projecting a constellation picture or a constellation line, it is superimposed on the star image from the optical projector. Therefore, in order to reduce the black float, the aperture amount is reduced and projection is performed with a small amount of light. On the other hand, when projecting spacecraft images and daytime landscape images, it is not necessary to suppress the black float. Therefore, a clearer image can be projected with a larger amount of light. Therefore, projection is performed with the maximum light amount with the electric aperture 11 fully opened. By performing such control, more effective performance can be achieved without increasing the operation burden.

  Note that the opening / closing control (see FIG. 10) of the electric diaphragm 11 during rotation of the dimming volume and the control of the electric diaphragm 11 (FIG. 12 or FIG. 14) by projection for assistance are not linked to the observation time. Therefore, these controls can be performed even when the observation time is interrupted during the demonstration.

  As described above in detail, the planetarium apparatus 100 according to the first embodiment can change the projection content of the optical projector 20 by the time volume and dimming volume provided in the operation unit 5. The integrated control unit 2 controls the projection content of the optical projector 20 by rotating these volumes. Furthermore, the integrated control unit 2 instructs the electronic drive control unit 3 to open and close the electric diaphragm 11 in accordance with the change in the projection content of the optical projector 20. That is, the amount of light from the electronic projector 10 is adjusted in conjunction with the change in the projection content of the optical projector 20.

  Specifically, in the time variation control, as shown in FIG. 8, the image projected by the electronic projector 10 at the time of sunrise or sunset and the star image projected by the optical projector 20 are linked to the variation of the observation time. Automatically crossfades. Thereby, the operation burden on the operator is reduced. Therefore, the operator can perform a smooth operation without causing discomfort to the audience. Further, at night, control is performed to suppress the amount of light from the electronic projector 10 by restricting the opening of the electric diaphragm 11. Thereby, the floating of black by the electronic projector 10 is suppressed, and a beautiful star image by the optical projector 20 is projected.

  Further, the planetarium apparatus 100 increases the amount of light from the electronic projector 10 according to the projection of the explanation auxiliary image, and provides a powerful explanation auxiliary image. This operation is also performed in conjunction with the projection instruction of the explanation auxiliary image, thereby reducing the burden on the operator. Therefore, it is a planetarium device in which an electronic projector and an optical projector cooperate. The operation burden on the operator is light, the powerful projection image by the electronic projector is not impaired, and the optical projector A planetarium device that does not impair the beauty of the star image has been realized.

[Second form]
As shown in FIG. 15, the planetarium apparatus 200 according to the second embodiment includes a dome screen 1, electronic projection units 11 to 16 installed on the periphery thereof, an optical projector 20 installed below the center thereof, And an operation unit 5. The operation unit 5 is used to set the content of the image projected on the entire dome screen 1. Each electronic projection unit projects a digital image on the dome screen 1 and is in charge of an allocated area of the entire sky. Then, the image of Hoshino is projected on the entire dome screen 1 by the cooperation of the electronic projection units 11 to 16. Specifically, as shown in FIG. 16, the electronic projection units 11 to 15 are in charge of five areas along the periphery, and the electronic projection unit 16 is in charge of one area of the zenith portion. That is, the planetarium apparatus 100 according to the first embodiment is a monocular projection apparatus that projects a digital image by one electronic projector, whereas the planetarium apparatus 200 according to the present embodiment includes a plurality of electronic projectors. This is a multi-view projector that projects digital video.

  The planetarium apparatus according to the present embodiment includes an integrated control unit 2, a video generation unit group 40 including a plurality of video generation units, a video adjustment unit 6, and an electronic drive control unit 3 as shown in the block diagram of FIG. And. The integrated control unit 50 performs video control, audio control, illumination control, and the like in accordance with instructions from the operation unit 5. Furthermore, one image projected on the dome screen 1 is divided into six regions. In the video generation unit group 40, each video generation unit corresponds to each of the electronic projection units 11 to 16, and generates a video corresponding to each electronic projection unit. The video adjustment unit 6 performs a joining process for overlapping portions among the six divided regions. The adjusted image is sent to each electronic projection unit and projected on the dome screen 1.

  Even in the planetarium apparatus configured as described above, time variation or stellar dimming is possible as in the first embodiment. During these processes, it is possible to perform opening / closing control of the motorized diaphragm of each electronic projection unit in conjunction with fluctuations in the amount of light from the optical projector 20. Therefore, if the amount of light from the optical projector 20 is equal to or greater than a predetermined value (for example, the observation time is after the time β or the position of the dimming volume is equal to or greater than the position T), the light from each electronic projection unit Control to suppress the amount of light. As a result, the cross-fading between the star image from the optical projector 20 and the images from the electronic projectors 11 to 16 is automatically performed, and the floating of black by each electronic projector is suppressed. A beautiful star image by the machine 20 is projected.

  In the planetarium apparatus 200, the electronic projection units 11 to 16 can also provide explanation assistance. During the projection of the star image by the optical projector 10, it is possible to control the opening / closing of the electric diaphragm of each electronic projection unit in conjunction with the explanation-assisting projection. Accordingly, a planetarium device is realized in which the operation burden on the operator is light, the powerful projection image by the electronic projector is not impaired, and the beauty of the star image of the optical projector is not impaired.

  Note that this embodiment is merely an example, and does not limit the present invention. Therefore, the present invention can naturally be improved and modified in various ways without departing from the gist thereof. For example, in the present embodiment, the present invention is applied to a planetarium apparatus, but the present invention is not limited to this. That is, it may be a video image projection device that projects onto a flat screen.

  In the present embodiment, the light amount is adjusted by opening / closing control of the electric diaphragm 11, but the light amount adjusting means is not limited to this. For example, the amount of light may be adjusted by controlling the energy of the light source.

It is the schematic which shows the apparatus structure of the planetarium apparatus which concerns on a 1st form. It is a block diagram which shows the system configuration | structure of the planetarium apparatus which concerns on a 1st form. It is a figure which shows an example of the external appearance of an operation part. It is a figure which shows an example of the console of an operation part. It is a block diagram which shows typically the structure of the optical system of an electronic projector. It is the schematic which shows the mechanism of an electric aperture. It is a figure which shows the open state and closed state of an electric aperture, respectively. It is a time chart which shows the time variation control which concerns on a 1st form. It is a flowchart which shows the time variation control which concerns on a 1st form. It is a flowchart which shows the light control which concerns on a 1st form. It is a time chart which shows the opening / closing control of the electric diaphragm at the time of explanation assistance (constellation picture) projection. It is a flowchart which shows the opening / closing control of the motorized aperture at the time of explanation assistance (constellation picture) projection. It is a time chart which shows opening / closing control of the motorized aperture at the time of explanation assistance (planetary image) projection. It is a flowchart which shows the opening / closing control of the motorized aperture at the time of explanation assistance (planetary image) projection. It is the schematic which shows the apparatus structure of the planetarium apparatus which concerns on a 2nd form. It is the image figure which looked at the planetarium apparatus shown in FIG. 15 from the dome zenith. It is a block diagram which shows the system configuration | structure of the planetarium apparatus which concerns on a 2nd form.

Explanation of symbols

1 Dome screen 2 Integrated control unit (light quantity control means)
3 Electronic drive control unit (light quantity control means)
5 Operation part (observation time changing means, light intensity adjusting means, auxiliary image instruction means)
10 Electronic projector (electronic projector)
11 Electric aperture (light quantity control means)
20 Optical projector (optical projector)
100 planetarium equipment (planetarium equipment)

Claims (9)

In a planetarium apparatus comprising an optical projector that projects a star image by light transmitted through a star projection original plate, and an electronic projector that projects an electronic image generated by a computer,
A light amount control means for controlling the amount of light projected from the optical projector and the amount of light projected from the electronic projector;
The light amount control means reduces the light amount of light projected from the electronic projector in conjunction with the increase of the light amount projected from the optical projector, and projects light from the optical projector. A planetarium apparatus characterized by increasing the amount of light projected from the electronic projector in conjunction with a decrease in the amount of light. In a planetarium apparatus comprising an optical projector that projects a star image by light transmitted through a star projection original plate, and an electronic projector that projects an electronic image generated by a computer,
Observation time changing means for instructing the advancement or retraction of the observation time;
A light amount control means for controlling the amount of light projected from the optical projector and the amount of light projected from the electronic projector;
The planetaryium apparatus characterized in that the light quantity control means gradually increases or decreases the light quantity of light projected from each projector according to the advance or retreat of the observation time by the observation time changing means. The planetarium device according to claim 2,
The light amount control means gradually increases the amount of light projected from the optical projector according to the progress of observation time when each projector switches from daytime video to nighttime video, and the electronic type A planetarium device characterized by gradually reducing the amount of light projected from a projector. In a planetarium apparatus comprising an optical projector that projects a star image by light transmitted through a star projection original plate, and an electronic projector that projects an electronic image generated by a computer,
A light amount adjusting means for instructing increase / decrease in the amount of light projected from the optical projector;
A light amount control means for controlling the amount of light projected from the optical projector and the amount of light projected from the electronic projector;
The planetaryium apparatus characterized in that the light quantity control means increases or decreases the light quantity projected from the electronic projector in conjunction with the increase or decrease of the light quantity by the light quantity adjustment means. The planetarium device according to claim 4,
The planetaryium apparatus characterized in that the light quantity control means performs control to suppress the light quantity of light projected from the electronic projector if an instruction value from the light quantity adjustment means is a predetermined value or more. In the planetarium device according to any one of claims 1 to 5,
Auxiliary image instruction means for instructing projection of an auxiliary image that assists explanation of Hoshino with the electronic projector.
The planetaryium apparatus characterized in that the light quantity control means increases or decreases the quantity of light projected from the electronic projector in response to an auxiliary image projection instruction by the auxiliary image instruction means. In a planetarium apparatus comprising an optical projector that projects a star image by light transmitted through a star projection original plate, and an electronic projector that projects an electronic image generated by a computer,
An auxiliary image instruction means for instructing the projection of an auxiliary image for assisting the explanation of Hoshino with the electronic projector;
A light amount control means for controlling the amount of light projected from the electronic projector,
The planetaryium apparatus characterized in that the light quantity control means increases or decreases the quantity of light projected from the electronic projector in response to an auxiliary image projection instruction by the auxiliary image instruction means. The planetarium device according to claim 6 or 7,
The light amount control unit is configured to control a light amount of light projected from the electronic projector in conjunction with an auxiliary image projection instruction by the auxiliary image instruction unit when a star image is projected by the optical projector. A planetarium device characterized in that it increases and reduces the amount of light projected from the electronic projector in conjunction with an auxiliary image projection cancellation instruction. The planetarium device according to any one of claims 6 to 8,
The planetaryium apparatus characterized in that the light amount control means defines a light amount value in accordance with the content of the auxiliary image projection instruction.

Images