Projection system, control device, and image projection method

A projection system that projects image light onto a screen, the projection system comprising:

• a screen forming device including a plurality of nozzles and configured to form the screen by ejecting liquid onto an optical path of the image light from the nozzles;
• and
• a projection device configured to draw an image using a plurality of pixels and project image light modulated by the pixels onto the screen, wherein
• when a direction along the image light is represented as an X axis, an axis orthogonal to the X axis is represented as a Y axis, and an axis orthogonal to the X axis and the Y axis is represented as a Z axis, the screen forming device includes the nozzles disposed side by side in the X-axis direction and the Y-axis direction,
• the projection device includes a storing section configured to store three-dimensional display formation data obtained by executing matching processing for correlating coordinates of a plurality of sectional shape data obtained by dividing three-dimensional shape data in the X-axis direction with the pixels and heights of an ejection space in the Z-axis direction from the nozzles,
• the projection system drives the pixels and the nozzles of the screen forming device based on the three-dimensional display formation data stored in the storing section of the projection device, and
• the plurality of sectional shape data represents a two-dimensional figure in a Y-Z surface extending along the Y axis and along the Z axis.

A projection system comprising:

• a projection device including a light source and a light modulating device configured to modulate light emitted by the light source to form image light, the projection device projecting the image light;
• a screen forming device including a plurality of nozzles disposed side by side in a first direction along an optical path of the image light and a second direction crossing the first direction, the screen forming device forming a screen by ejecting liquid onto an optical path of the image light from the nozzles;
• and
• a control device configured to control the projection device and the screen forming device based on a plurality of sectional shape data, formed by a three-dimensional coordinate system having an X axis, a Y axis, and a Z axis orthogonal to one another, obtained by dividing three-dimensional shape data, wherein
• the control device causes the projection device to project the image light of an image based on the sectional shape data, controls, based on the sectional shape data, timing for ejecting the liquid from a plurality of the nozzles lined in the second direction, and performs control for matching timing for ejecting the liquid from a plurality of the nozzles lined in the first direction with timing when the projection device switches the sectional shape data, and
• the plurality of sectional shape data represents a two-dimensional figure in a Y-Z surface extending along the Y axis and along the Z axis.

A control device used in combination with a projection device that projects image light and a screen forming device that forms a screen by ejecting liquid onto an optical path of the image light from a plurality of nozzles, the control device comprising:

• a data generating section configured to acquire a plurality of three-dimensional shape data formed by a three-dimensional coordinate system having an X axis, a Y axis, and a Z axis orthogonal to one another and divide the three-dimensional shape data to generate sectional shape data;
• and
• a matching processing section configured to correlate coordinates of the sectional shape data, pixels with which the projection device draws an image, the nozzles of the screen forming device, and heights in an ejection space of the liquid ejected from the nozzles, wherein
• the plurality of sectional shape data represents a two-dimensional figure in a Y-Z surface extending along the Y axis and along the Z axis.

An image projection method for projecting an image using a screen forming device that forms a screen by ejecting liquid from a plurality of nozzles and a projection device that draws an image using a plurality of pixels and projects image light modulated by the pixels onto the screen, the image projection method comprising:

• acquiring a plurality of three-dimensional shape data formed by a three-dimensional coordinate system having an X axis, a Y axis, and a Z axis orthogonal to one another;
• dividing the three-dimensional shape data in the X-axis direction to generate sectional shape data;
• acquiring coordinates of the sectional shape data;
• executing matching processing for correlating coordinates of the sectional shape data, pixels with which the projection device draws an image, the nozzles of the screen forming device, and heights in an ejection space of the liquid ejected from the nozzles;
• and
• driving the pixels and the nozzles of the screen forming device based on the sectional shape data and according to the correlation by the matching processing and projecting an image onto the screen, wherein
• the plurality of sectional shape data represents a two-dimensional figure in a Y-Z surface extending along the Y axis and along the Z axis.