JP2015121655A - Screen formation device, projection system and screen formation method - Google Patents

Abstract

PROBLEM TO BE SOLVED: To form a screen with fluid while suppressing generation of a blank space in a peripheral part of a projected image.SOLUTION: A screen formation device 3 includes a generation part 301, and an ejection part 303 which is communicated with the generation part 301 via a duct 302. The generation part 301 generates mist with ultrasonic vibration. The mist 311 supplied into a chamber 312 via the duct 302 with the rotation of a main fan 310 is blown to the upper side of each of individual fans 531-535 by an amount according to the rotational speed of each of the individual fans 531-535. The aggregation of the mist 311 blown to the upper side of each of the individual fans 531-535 forms a screen 315 (also called mist screen).

Description

  The present invention relates to a screen forming apparatus, a projection system, and a screen forming apparatus for projecting an image using a fluid (fluid) such as water particles (also referred to as mist, fog (mist)), water, and powder. The present invention relates to a screen forming method.

  2. Description of the Related Art Conventionally, there has been known an apparatus that forms a screen by stirring a liquid such as water with an ultrasonic vibrator to form particles and ejecting them in a plane (for example, see Patent Document 1). This apparatus is also called a fog screen apparatus, and projects an image on a screen formed of water particles (hereinafter referred to as a fog screen) using a projector or the like. As a result, a hologram effect is obtained in which an image appears to float in the air.

JP-A-5-27694

  During projection, if the fog screen is smaller than the projected image, partial projection loss occurs in the image. Therefore, it is generally performed to form a fog screen that is sufficiently larger than the image. ing. For this reason, the fog of the blank part is visually observed around the image projected on the fog screen, and the effect as an image hologram is impaired.

  The present invention has been made in view of such conventional problems, and a screen forming apparatus, a projection system, and a screen capable of forming a screen with a fluid while suppressing the generation of a blank in the peripheral portion of the projected image. An object is to provide a forming method.

  In order to solve the above problems, a screen forming apparatus according to the present invention includes a supply unit that supplies a fluid, and an ejection unit that ejects the fluid supplied from the supply unit to form a screen for projecting an image. The control part which controls individually the ejection state of the fluid made to eject from the part in a plurality of parts of the ejection part is provided.

  The projection system according to the present invention is a projection system comprising a projection device and a screen forming device, the projection device comprising projection means for projecting an image on a screen, and the screen forming device supplies a fluid. A supply unit that performs the above operation, a jet unit that forms a screen for projecting an image by ejecting the fluid supplied from the supply unit, and a jet state of the fluid that is jetted from the site at a plurality of sites of the jet unit And a control unit for individually controlling.

  Further, the screen forming method according to the present invention supplies a fluid for forming a screen for projecting an image, causes the supplied fluid to be ejected from the part at a plurality of parts, and individually controls the ejection state of the fluid. By doing so, a screen having an outer peripheral shape corresponding to the outer peripheral shape of the image is formed.

  According to the present invention, it is possible to form a screen with a fluid while suppressing the generation of a blank in the peripheral portion of the projected image, and it is possible to project an image without impairing the hologram effect.

1 is a perspective view showing an overall configuration of a system according to an embodiment of the present invention. 1 is a schematic cross-sectional view showing a first embodiment of the present invention. It is a block diagram which shows the circuit structure of a projector. It is a block diagram which shows the circuit structure of a screen formation apparatus. (A) is a conceptual diagram showing a main fan control table, (B) is a conceptual diagram showing an individual fan control table. It is a flowchart which shows the process sequence of a screen formation apparatus. It is a figure which shows the 1st-5th division area at the time of dividing a projection image into five in the perpendicular direction. It is a schematic cross section which shows the screen formation apparatus in the 2nd Embodiment of this invention. It is a schematic cross section which shows the screen formation apparatus in the 3rd Embodiment of this invention. It is a schematic cross section which shows the screen formation apparatus in the 4th Embodiment of this invention.

Hereinafter, an embodiment of the present invention will be described with reference to the drawings.
(First embodiment)
FIG. 1 is a perspective view showing an external configuration of a projection system 1 according to the first embodiment of the present invention. The projection system 1 includes a projector 2 and a screen forming device 3 electrically connected to the projector 2.

  FIG. 2 is a schematic cross-sectional view showing the configuration of the screen forming apparatus 3. The screen forming apparatus 3 includes a generation unit 301 and an ejection unit 303 communicated with the generation unit 301 via a duct 302. The generating unit 301 includes a tank 307 provided with an opening 305 at one end surface, and the duct 302 is communicated with the other end surface of the tank 307. Water 308 is accommodated in the tank 307, and an ultrasonic transducer 309 is disposed in the water 308. The opening 305 is provided with a main fan 310 that blows air toward the inside of the tank 307. Therefore, particles of water 308 (hereinafter referred to as mist 311) are generated along with the operation of the ultrasonic vibrator 309, and the generated mist 311 passes through the duct 302 and is pumped to the ejection portion 303.

  The ejection part 303 has a chamber 312, and the duct 302 is joined to one side surface of the chamber 312. In addition, a single and long upper opening 313 is provided on the upper surface of the chamber 312, and five lower openings 521 to 525 are opened on the lower surface. In each of the lower openings 521 to 525, individual fans 531 to 535 for blowing air in the chamber 312 are arranged. Therefore, when the individual fans 531 to 535 rotate, an amount of outside air corresponding to the rotation speed is sucked from the corresponding lower openings 521 to 525 and blown upward from the upper opening 313. Therefore, the mist 311 supplied into the chamber 312 through the duct 302 as the main fan 310 rotates is blown out above the individual fans 531 to 535 in an amount corresponding to the rotational speed of the individual fans 531 to 535. The Rukoto. A screen 315 (also referred to as a mist screen) is formed by a set of mists 311 blown above the individual fans 531 to 535.

  FIG. 3 is a block diagram showing an electrical configuration of the projector 2. The projector 2 includes a control unit 11, an input / output interface 12, an image conversion unit 13, a display encoder 14, a display driving unit 15, and the like. Image signals (image data) of various standards input from the input / output connector unit 16 are unified into image data of a predetermined format suitable for display by the image conversion unit 13 via the input / output interface 12 and the system bus 17. After being converted to, it is sent to the display encoder 14. The display encoder 14 develops and stores the transmitted image signal in the video RAM 18, generates a video signal from the stored contents of the video RAM 18, and outputs the video signal to the display driving unit 15.

  The display driving unit 15 to which the video signal is input from the display encoder 14 drives the display element 19 which is a spatial light modulation element (SOM) at an appropriate frame rate in accordance with the transmitted image signal. Then, the light bundle emitted from the light source device 20 having a lamp is incident on the display element 19 through the light source side optical system, thereby forming an optical image with the reflected light of the display element 19, and the projection side optical system. An image is projected and displayed on the screen 315 through the movable lens group 21. The movable lens group 21 of the projection side optical system is driven by a lens motor 22 for zoom control and focus control.

  The image compression / decompression unit 23 performs recording processing for compressing the luminance signal and the color difference signal in the image signal by processing such as ADTC and Huffman coding, and writing the data onto a memory card 24 that is a detachable recording medium. The image data recorded on the memory card is read out, is decompressed in units of one frame, is sent to the display encoder 14 via the image conversion unit 13, and allows moving image display based on the image data stored in the memory card 24. .

  The control unit 11 controls the operation of each circuit in the projector 2, and includes a CPU and its peripheral circuits, a ROM 111, a RAM 112, and the like. The ROM 111 stores programs such as various settings, programs and data shown by flowcharts described later, and the RAM 112 is used as a work memory or the like.

  The key / indicator unit 25 includes a main key and an indicator provided on a main body case, a lamp that is turned on when the projector 2 is activated, a key for inputting a distance to the screen forming device 3, and the like. These indicators and the like are displayed and blinked by the control unit 11, and operation signals for various keys are sent to the control unit 11. The control unit 11 controls the light source control circuit 26 to perform time-division control on the red light source, the green light source, and the blue light source according to the image signal.

As described above, the image conversion unit 13 converts the image signals (image data) of various standards input from the input / output connector unit 16 so as to be unified into image data of a predetermined format, and then converts the image signal to the display encoder 14. send. The image data output unit 27 supplies the following data (1), (2), and (3) to the screen forming device 3.
(1) Image data of a predetermined format converted by the image conversion unit 13,
(2) Zoom magnification set in the zoom movable lens group 21 by the lens motor 22 (3) Distance to the screen 315 input by the user at the key / indicator unit 25 Accordingly, the screen forming apparatus 3 is configured so that the projector 2 is connected to the screen 315. The same image data as the image data representing the image to be projected can be acquired. Further, the size of the image projected on the screen 315 can be calculated from the image data, the zoom magnification, and the distance.

  FIG. 4 is a block diagram showing an electrical configuration of the screen forming apparatus 3. The screen forming apparatus 3 includes an image data input unit 31, a control unit 32, and a motor driver circuit 33. The image data input unit 31 is an interface for inputting the data (1), (2), and (3) output from the image data output unit 27 of the projector 2. The control unit 32 controls the operation of each circuit in the screen forming apparatus 3, and includes a CPU and its peripheral circuits, a ROM 111, a RAM 322, and the like. The ROM 321 stores programs, data, and the like shown in the flowcharts described later in advance, and the RAM 112 is used as a work memory or the like.

  A main motor 40 and five individual motors 41 to 45 are connected to the motor driver circuit 33. The main motor 40 is a motor that rotationally drives the main fan 310, and the five individual motors 41 to 45 are motors that rotationally drive the individual fans 531 to 535. The motor driver circuit 33 has a function capable of individually applying different voltages to the six motors 40 to 45 in total. Therefore, when different voltages are applied to the motors 40 to 45, the main fan 310 and the individual fans 531 to 535 can rotate at different speeds.

  FIG. 5 is a diagram showing a configuration of a table stored in advance in the ROM 321 included in the control unit 32. The ROM 321 stores a main fan control table 351 and an individual fan control table 352 in advance. The main fan control table 351 stores a voltage that needs to be applied to the main motor 40 in order to supply the mist 311 when forming the screen 315 having an area where an image can be projected without omission. That is, as the projected area of the screen 315 increases to G1, G2, G3, G4..., The applied voltages VA, VB, VC,. VD... Is stored.

  Therefore, as the necessary area of the screen 315 increases, the main fan 310 rotates at a high speed, and a large amount of mist 311 is supplied from the generating unit 301 to the ejection unit 303 via the lateral duct 360. These values are obtained experimentally.

  In the individual fan control table 352, as shown in FIG. 7, the image (projected image 600) projected on the screen 315 is divided into five parts in the vertical direction in the first to fifth divided areas 601 to 605 in that area. Corresponding to the maximum image heights H1, H2, H3, H4, and H5, the individual motors 41 to 45 required to secure the height of the screen 315 capable of projecting the image portion of the height. Application voltages Va, Vb, Vc, Vd... Are stored. These are values that gradually increase downward. Accordingly, the individual motors 41 to 45 rotate at a high speed as the required height increases, thereby forming a screen 315 having a required height for each of the divided regions 601 to 605.

  In the present embodiment having the above configuration, the projector 2 converts the image data by the image conversion unit 13, and the display encoder 14 develops and stores the image signal in the video RAM 18. A signal is generated and output to the display driving unit 15. The display driving unit 15 drives the display element 19 in response to the transmitted image signal, and the light beam emitted from the light source device 20 is incident on the display element 19 via the light source side optical system, whereby display is performed. An optical image is formed by the reflected light of the element 19, and the image is projected onto the screen 315 through the lens group 21.

  On the other hand, the control unit 32 of the screen forming apparatus 3 executes processing as shown in the flowchart of FIG. 6 based on a program stored in the ROM 321. That is, the above-described (1) image data, (2) zoom magnification, and (3) distance to the screen 315 are input from the image data output unit 27 of the projector 2 to the image data input unit 31 of the screen forming apparatus 3. The Then, using these data, the control unit 32 virtually generates an image projected on the screen 315 in the RAM 322, calculates the size of the projection image, and calculates the surface area thereof (step S1).

  Subsequently, with reference to the main fan control table 351, an applied voltage to the main motor 40 necessary for forming a screen 315 having a size capable of projecting the projection image having the surface area without omission is read out. Then, by supplying this applied voltage to the main motor 40, the main fan 310 is rotated to feed the mist 311 (step S2). Thereby, the screen forming apparatus 3 can form a screen that can project a projected image without omission.

  Further, since the projection image is virtually generated in the RAM 322 by the processing in step S1, the projection image is divided into the same width in the vertical direction by the number of individual fans (step S3). Thereby, as shown in FIG. 7, the 1st-5th division area 601-605 at the time of dividing the projection image 600 into five in the perpendicular direction will be formed.

  Next, the maximum height of each of the divided areas 601 to 605 is calculated (step S4). As a result, the maximum heights H1, H2, H3, H4, and H5 shown in FIG. 7 are calculated. And the applied voltages Va, Vb, Vc, Vd... To the individual motors 41 to 45 corresponding to the calculated maximum heights H1, H2, H3, H4, H5 are read from the individual fan control table 352. Then, by supplying this applied voltage to the individual motors 41 to 45, the individual fans 531 to 535 are rotated at a speed corresponding to the maximum height, respectively (step S5). Therefore, each individual fan 531 to 535 can be formed with a screen having a height required to project the corresponding divided regions 601 to 605 of the projection image.

  Therefore, by forming the screen 315 having a height not less than the projected image 600, it is possible to prevent the peripheral portion of the projected image 600 from being formed in any shape, thereby impairing the hologram effect. An image can be projected without any problems.

  In addition, in the present embodiment, since the mist 311 corresponding to the size corresponding to the projection image is also supplied to the entire screen 315 by the control of the main fan 310, a margin is generated in the peripheral portion of the projection image 600. This can be prevented more reliably.

  In step S6 following step S5, it is determined whether or not to end the projection. When continuing, the process from step S1 is repeated, and when complete | finishing, the process according to this flow is complete | finished.

  In the present embodiment, the distance between the projector 2 and the screen forming device 3 is key-inputted. However, a distance measuring sensor is provided in one of the devices, and the distance data is obtained by distance measurement. You may make it.

(Second Embodiment)
FIG. 8 is a schematic cross-sectional view showing the configuration of the screen forming apparatus 3 according to the second embodiment of the present invention. The screen forming apparatus 3 includes a generating unit 301 and a jet unit 303 integrally coupled to the upper part of the generating unit 301. The generation unit 301 includes a tank 307 formed of a container body whose upper surface is open. Water 308 is accommodated in the tank 307, and an ultrasonic transducer 309 is disposed in the water 308. Accordingly, mist 311 is generated in accordance with the operation of the ultrasonic transducer 309.

  The ejection portion 303 has a chamber 312, and a single and long upper opening 313 is provided on the upper surface of the chamber 312, and five lower openings 521 to 525 are opened on the lower surface. ing. In each of the lower openings 521 to 525, individual fans 531 to 535 for blowing air in the chamber 312 are arranged. Therefore, when the individual fans 531 to 535 rotate, an amount of mist 311 corresponding to the rotation speed is sucked from the corresponding lower openings 521 to 525 and blown upward from the upper opening 313.

  Therefore, according to the screen forming apparatus 3 according to the present embodiment, unlike the apparatus according to the first embodiment, the main fan 310 and its control system are not required, and the apparatus can be simplified. In addition, since the horizontal duct 360 is not required and the generating part 301 and the ejection part 303 are arranged vertically, the apparatus can be downsized.

(Third embodiment)
FIG. 9 is a schematic cross-sectional view showing the configuration of the screen forming apparatus 3 according to the third embodiment of the present invention. The screen forming apparatus 3 includes a generation unit 301 and an ejection unit 303 communicated with the generation unit 301 via a lateral duct 360. The generator 301 has a tank 307 provided with an opening 305 on one end surface, and the lateral duct 360 is communicated with the other end surface of the tank 307. Water 308 is accommodated in the tank 307, and an ultrasonic transducer 309 is disposed in the water 308. The opening 305 is provided with a main fan 310 that blows air toward the inside of the tank 307. Accordingly, mist 311 is generated along with the operation of the ultrasonic vibrator 309, and the generated mist 311 passes through the lateral duct 360 and is pumped to the ejection unit 303.

  The ejection portion 303 is provided with five independent vertical ducts 361 to 365 each having a lower end portion connected to and connected to the horizontal duct 360. Individual fans 531 to 535 are disposed in the lower portions of the vertical ducts 361 to 365, respectively. Moreover, the blower outlets 371-375 are provided in the upper end part of each vertical duct 361-365.

  Therefore, when the main fan 310 rotates, the mist 311 is supplied from the generating unit 301 to the ejection unit 303 via the lateral duct 360. Further, if the individual fans 531 to 535 of the ejection part 303 are also rotating, the mist 311 in the horizontal duct 360 is sucked into the vertical ducts 361 to 365 and then according to the rotational speed of the individual fans 531 to 535. The amount is discharged to the outside through the outlets 371 to 375. A screen 315 is formed by a set of mists 311 blown upward from the air outlets 371 to 375.

  At this time, the mist 311 forming the screen portions of the first to fifth divided regions 601 to 605 is blown out from different independent outlets 371 to 375. Therefore, there is little interference between the mists 311 in the adjacent divided regions 601 to 605, and the height control of the mist 311 can be performed with high accuracy in the first to fifth divided regions 601 to 605. Therefore, it is possible to reliably prevent the screen 315 having a height higher than the projected image 600 from being formed and to generate a blank in the peripheral portion of the projected image 600, and to project the image without impairing the hologram effect. it can.

(Fourth embodiment)
FIG. 10 is a schematic cross-sectional view showing the configuration of the screen forming apparatus 3 according to the fourth embodiment of the present invention. The screen forming apparatus 3 includes a generating unit 301 and a jet unit 303 integrally coupled to the upper part of the generating unit 301. The generation unit 301 includes a tank 307 formed of a container body having an open top surface. Water 308 is accommodated in the tank 307, and an ultrasonic transducer 309 is disposed in the water 308. Accordingly, mist 311 is generated in accordance with the operation of the ultrasonic transducer 309.

  The ejection portion 303 is provided with five independent vertical ducts 361 to 365 whose lower ends are open. Individual fans 531 to 535 are disposed in the lower portions of the vertical ducts 361 to 365, respectively. Moreover, the blower outlets 371-375 are provided in the upper end part of each vertical duct 361-365.

  Therefore, when the individual fans 531 to 535 rotate, the mist 311 in the tank 307 is sucked into the vertical ducts 361 to 365 and then the outlets 371 to 375 are made in an amount corresponding to the rotational speed of the individual fans 531 to 535. It is discharged to the outside. A screen 315 is formed by a set of mists 311 blown upward from the air outlets 371 to 375.

  Therefore, according to the screen forming apparatus 3 according to the present embodiment, unlike the apparatus according to the third embodiment, the main fan 310 and its control system are not required, and the apparatus can be simplified. In addition, since the horizontal duct 360 is not required and the generating part 301 and the ejection part 303 are arranged vertically, the apparatus can be downsized.

  In the present embodiment, the case where water particles (mist) are used as the fluid has been described. However, the present invention is not limited to this, and other fluids such as water and smoke can be used as appropriate. In the case of water particles, as shown in the embodiment, it is easy to form a screen having a desired shape by blowing out from below. Further, in the case of a liquid such as water, it is easy to form a screen having a desired shape if it is dropped from above. .

As mentioned above, although embodiment of this invention was described, these are suitably changeable if it is in the range with which the effect of this invention is acquired, Embodiment after change is also invention described in the claim, And the scope of the invention equivalent to that invention.
The invention described in the scope of the claims of the present application will be appended below.
[Claim 1]
A supply for supplying fluid;
An ejection unit that ejects fluid supplied from the supply unit to form a screen for projecting an image;
A screen forming apparatus comprising: a control unit that individually controls an ejection state of the fluid ejected from the part at a plurality of parts of the ejection part.
[Claim 2]
The screen control device according to claim 1, wherein the control unit controls an ejection amount of fluid ejected from each part.
[Claim 3]
The screen forming apparatus according to claim 1, wherein the fluid is water particles.
[Claim 4]
The screen forming apparatus according to claim 1, wherein the ejection portion is an ejection outlet that ejects the fluid upward.
[Claim 5]
5. The screen forming apparatus according to claim 1, wherein the control unit is a fan that is provided for each of the parts and whose rotation is individually controlled.
[Claim 6]
The screen forming apparatus according to any one of claims 1 to 5, wherein the control unit includes individual jets provided separately for each of the parts.
[Claim 7]
Obtaining means for obtaining an image projected on the screen;
The screen forming apparatus according to claim 1, wherein the control unit controls the amount of fluid ejected from each of the parts based on the shape of the image acquired by the acquiring unit.
[Claim 8]
The said control part controls the quantity of the fluid ejected from each said part so that the screen of the shape approximated to the outer periphery shape of the image acquired by the said acquisition means may be formed. Screen forming equipment.
[Claim 9]
Obtaining means for obtaining an image projected on the screen;
The controller is
Area dividing means for dividing the image acquired by the acquiring means into a plurality of areas corresponding to the respective parts;
Calculating means for calculating the maximum length in the divided direction of the image for each area divided by the area dividing means;
The screen forming apparatus according to claim 1, wherein the ejection length of the fluid is individually controlled for each region based on the maximum length calculated by the calculating unit.
[Claim 10]
A projection system comprising a projection device and a screen forming device,
The projection apparatus includes a projection unit that projects an image on a screen,
The screen forming apparatus includes:
A supply for supplying fluid;
An ejection unit that ejects fluid supplied from the supply unit to form a screen for projecting an image;
A projection system comprising: a control unit that individually controls an ejection state of the fluid ejected from the part at a plurality of parts of the ejection part.
[Claim 11]
The screen forming apparatus includes:
An acquisition means for acquiring an image projected by the projection device;
The projection system according to claim 10, wherein the control unit controls the amount of fluid ejected from each part based on the shape of the image acquired by the acquisition unit.
[Claim 12]
The control unit of the screen forming device controls the amount of fluid ejected from each of the parts so that a screen having a shape approximate to the outer peripheral shape of the image acquired by the acquisition unit is formed. The projection system according to claim 10.
[Claim 13]
The screen forming apparatus includes:
An acquisition means for acquiring an image projected by the projection device;
The controller is
Area dividing means for dividing the image acquired by the acquiring means into a plurality of areas corresponding to the respective parts;
Calculating means for calculating the maximum length in the divided direction of the image for each area divided by the area dividing means;
The projection system according to claim 10, wherein the ejection length of the fluid is individually controlled for each of the regions based on the maximum length calculated by the calculation unit.
[Claim 14]
Supplying a fluid that forms a screen for projecting an image;
Causing the supplied fluid to be ejected from the part at a plurality of parts;
A screen forming method, wherein a screen having an outer peripheral shape corresponding to the outer peripheral shape of the image is formed by individually controlling the ejection state of the fluid.

DESCRIPTION OF SYMBOLS 1 Projection system 2 Projector 3 Screen formation apparatus 11 Control part 12 Input / output interface 13 Image conversion part 14 Display encoder 15 Display drive part 16 Input / output connector part 17 System bus 18 Video RAM
DESCRIPTION OF SYMBOLS 19 Display element 20 Light source device 21 Zoom movable lens group 22 Lens motor 23 Image compression / expansion part 24 Memory card 25 Key / indicator part 26 Light source control circuit 27 Image data etc. output part 31 Image data etc. input part 32 Control part 33 Motor driver Circuit 40 Main motor 41 to 45 Individual motor 111 ROM
112 RAM
DESCRIPTION OF SYMBOLS 301 Generating part 302 Duct 303 Ejection part 305 Opening part 307 Tank 308 Water 309 Ultrasonic vibrator 310 Main fan 311 Mist 312 Chamber 313 Upper opening 315 Screen 351 Main fan control table 352 Individual fan control table 360 Horizontal duct 361-365 Vertical duct 371-375 Outlet 521-525 Lower opening 531-535 Individual fan 600 Projected image 601-605 Divided area

Claims (16)

A supply for supplying fluid;
An ejection unit that ejects fluid supplied from the supply unit to form a screen for projecting an image;
A screen forming apparatus comprising: a control unit that individually controls an ejection state of the fluid ejected from the part at a plurality of parts of the ejection part.   The screen control device according to claim 1, wherein the control unit controls an ejection amount of fluid ejected from each part.   The screen forming apparatus according to claim 1, wherein the fluid is water particles.   The screen forming apparatus according to claim 1, wherein the supply unit includes a fan that pumps the water particles in the direction of the ejection unit.   The screen forming apparatus according to any one of claims 1 to 4, wherein the ejection portion is an ejection port that ejects the fluid upward.   6. The screen forming apparatus according to claim 1, wherein the control unit is a fan that is provided for each part and whose rotation is individually controlled.   The screen forming apparatus according to any one of claims 1 to 6, wherein the control unit includes individual jets provided separately for each of the parts. Obtaining means for obtaining an image projected on the screen;
The screen forming apparatus according to claim 1, wherein the control unit controls the amount of fluid ejected from each of the parts based on the shape of the image acquired by the acquiring unit.   The said control part controls the quantity of the fluid ejected from each said part so that the screen of the shape approximated to the outer periphery shape of the image acquired by the said acquisition means may be formed. Screen forming equipment.   The screen forming apparatus according to claim 1, wherein an ejection unit having the control unit is disposed on the supply unit. Obtaining means for obtaining an image projected on the screen;
The controller is
Area dividing means for dividing the image acquired by the acquiring means into a plurality of areas corresponding to the respective parts;
Calculating means for calculating the maximum length in the divided direction of the image for each area divided by the area dividing means;
The screen forming apparatus according to claim 1, wherein the ejection length of the fluid is individually controlled for each region based on the maximum length calculated by the calculating unit. A projection system comprising a projection device and a screen forming device,
The projection apparatus includes a projection unit that projects an image on a screen,
The screen forming apparatus includes:
A supply for supplying fluid;
An ejection unit that ejects fluid supplied from the supply unit to form a screen for projecting an image;
A projection system comprising: a control unit that individually controls an ejection state of the fluid ejected from the part at a plurality of parts of the ejection part. The screen forming apparatus includes:
An acquisition means for acquiring an image projected by the projection device;
The projection system according to claim 9, wherein the control unit controls the amount of fluid ejected from each of the parts based on the shape of the image acquired by the acquisition unit.   The control unit of the screen forming device controls the amount of fluid ejected from each of the parts so that a screen having a shape approximate to the outer peripheral shape of the image acquired by the acquisition unit is formed. The projection system according to claim 11. The screen forming apparatus includes:
An acquisition means for acquiring an image projected by the projection device;
The controller is
Area dividing means for dividing the image acquired by the acquiring means into a plurality of areas corresponding to the respective parts;
Calculating means for calculating the maximum length in the divided direction of the image for each area divided by the area dividing means;
The projection system according to claim 11, wherein the ejection length of the fluid is individually controlled for each region based on the maximum length calculated by the calculation unit. Supplying a fluid that forms a screen for projecting an image;
Causing the supplied fluid to be ejected from the part at a plurality of parts;
A screen forming method, wherein a screen having an outer peripheral shape corresponding to the outer peripheral shape of the image is formed by individually controlling the ejection state of the fluid.

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