What is stereo projection? Comprehensive analytical stereo projection technology

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.

Features: 12v Dc geared motor drive precision, small volume, large torque, low noise, durability, low energy consumption, customized power design,easy installation, easy maintenance;Simplify design and save space.

12V Dc Gear Motor, namely Gear Reduction Motor, is based on ordinary Dc Motor, coupled with gear reduction gearbox.

The gear reducer is used to provide low speed and large torque.

At the same time, the gearbox with different deceleration ratio can provide different speed and torque.

Generally different industries, using different power dc motor, generally adopt custom parameter design pattern.

Gear Motor



gear motor


Method of use: the best stable in horizontal plane, installed on the 12v dc gear motor output shaft parts, cannot use a hammer to knock,knock prone to press into the 12v dc gear motor drive, may cause damage to internal components, and cannot be used in the case of blocked.


dc gear motor


Operating temperature range:

12v Dc geared motors should be used at a temperature of -10~60℃.

The figures stated in the catalog specifications are based on use at  ordinary room temperature catalog specifications re based on use at ordinary room temperature  (approximately20~25℃.

If a geared motor is used outside the prescribed temperature range,the grease on the gearhead area will become unable to function normally and the motor will become unable to start.Depending on the temperature conditions ,it may be possible to deal with them by changing the grease of the motor's parts.Please feel free to consult with us about this.


Storage temperature range:

12v Dc geared motors should be stored ta a temperature of -15~65℃.

In case of storage outside this range,the grease on the gearhead area will become unable to function normally and the motor will become unable to start.


Service life:

The longevity of 12v Dc geared motor is greatly affected by the load conditions , the mode of operation,the environment of use ,etc.Therefore,it is necessary to check the conditions under which the product will actually be used .The following conditions will have a negative effect on longevity.Please consult with us should any of them apply.

●Use with a load that exceeds the rated torque

●Frequent starting

●Momentary reversals of turning direction

●Impact loads

●Long-term continuous operation

●Forced turning using the output shaft

●Use in which the permitted overhang load or the permitted thrust load is exceeded

●A pulse drive ,e.g.,a short break,counter electromotive force,PWM control

●Use of a voltage that is nonstandard as regards the rated voltage

●Use outside the prescribed temperature or relative-humidity range,or in a special environment.

●Please consult with us about these or any other conditions of use that may apply,so that we can be sure that you select the most appropriate model.

      12v Dc geared motor   12v Dc geared motor


when it come to volume production,we're a major player as well .each month,we rurn out  600000 units,all of which are compliant  with the rohs directive.Have any questions or special needed, please contact us, we have the engineer group and best sales department  to service to you Looking forward to your inquiry. Welcome to our factory.

12v Dc geared motor



12v Dc Gear Motor

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Shenzhen Shunchang Motor Co., LTD. , https://www.scgearmotor.com