Sofa butler projection With the continuous development of projection technology, 3D projection, holographic projection and other projection technology is no longer unfamiliar. The author is introducing another projection technology today - stereo projection. What is stereo projection? Then we come to a comprehensive analysis of stereoscopic projection technology.
What is a stereo projection:
Through the special projection equipment and the polarization effect of light, a three-dimensional effect is projected on the screen, so that when people watch the effect, it is a three-dimensional feeling.
Stereoscopic projection principle:
The principle of stereoscopic projection technology is achieved through the polarization of light, that is, using two projectors to synchronously project images, and the polarization directions of the polarizers in front of the two projectors are perpendicular to each other, so that the polarization directions of the two polarized lights generated are also perpendicular to each other. . However, when the polarized light is projected on a dedicated projection screen and then reflected to the audience position, the direction of polarized light must not change, and the viewer can only see the corresponding polarized light image through each eye of the polarized glasses, thereby generating a stereoscopic feeling in the visual nervous system.
Stereo projection classification:
Stereo projection is divided into active stereo projection and passive stereo projection
Active stereo projection:
Through the polarization principle of light, that is, using two projectors to synchronously project images, the polarization directions of the polarizers in front of the two projectors are perpendicular to each other, so that the polarization directions of the two polarized lights generated are also perpendicular to each other. However, when the polarized light is projected on a dedicated projection screen and then reflected to the audience position, the direction of polarized light must not change, and the viewer can only see the corresponding polarized light image through each eye of the polarized glasses, thereby generating a stereoscopic feeling in the visual nervous system.
Passive stereo projection:
Passive stereoscopic projection requires special glasses for viewing, which uses a simple image polarizer to distinguish the left and right eye information. The polarizer separates the left and right eye information by dividing the divergent light into horizontal and vertical planes. A conversion polarizer is placed in front of the projection lens for timely separation of left and right eye images. In this system, glasses are cheap, but the projection screen must be specific to maintain the polarization of light.
The use of stereo projection:
According to foreign media reports, Japanese researchers have recently developed a device that uses projection mapping technology to project directly to the liver of liver cancer patients, distinguish between the tumor site and the normal site, and assist in the accurate and safe operation. This device is named "visible light projection device." Kyoto University researchers who developed the device said that this technology can not only shorten the operation time, but also reduce the burden on patients. In addition to liver cancer, it is also expected to be used in various cancers such as breast cancer, lung cancer, and rectal cancer.
What is a stereo projection:
Through the special projection equipment and the polarization effect of light, a three-dimensional effect is projected on the screen, so that when people watch the effect, it is a three-dimensional feeling.
Stereoscopic projection principle:
The principle of stereoscopic projection technology is achieved through the polarization of light, that is, using two projectors to synchronously project images, and the polarization directions of the polarizers in front of the two projectors are perpendicular to each other, so that the polarization directions of the two polarized lights generated are also perpendicular to each other. . However, when the polarized light is projected on a dedicated projection screen and then reflected to the audience position, the direction of polarized light must not change, and the viewer can only see the corresponding polarized light image through each eye of the polarized glasses, thereby generating a stereoscopic feeling in the visual nervous system.
Stereo projection classification:
Stereo projection is divided into active stereo projection and passive stereo projection
Active stereo projection:
Through the polarization principle of light, that is, using two projectors to synchronously project images, the polarization directions of the polarizers in front of the two projectors are perpendicular to each other, so that the polarization directions of the two polarized lights generated are also perpendicular to each other. However, when the polarized light is projected on a dedicated projection screen and then reflected to the audience position, the direction of polarized light must not change, and the viewer can only see the corresponding polarized light image through each eye of the polarized glasses, thereby generating a stereoscopic feeling in the visual nervous system.
Passive stereo projection:
Passive stereoscopic projection requires special glasses for viewing, which uses a simple image polarizer to distinguish the left and right eye information. The polarizer separates the left and right eye information by dividing the divergent light into horizontal and vertical planes. A conversion polarizer is placed in front of the projection lens for timely separation of left and right eye images. In this system, glasses are cheap, but the projection screen must be specific to maintain the polarization of light.
The use of stereo projection:
According to foreign media reports, Japanese researchers have recently developed a device that uses projection mapping technology to project directly to the liver of liver cancer patients, distinguish between the tumor site and the normal site, and assist in the accurate and safe operation. This device is named "visible light projection device." Kyoto University researchers who developed the device said that this technology can not only shorten the operation time, but also reduce the burden on patients. In addition to liver cancer, it is also expected to be used in various cancers such as breast cancer, lung cancer, and rectal cancer.
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