common problems
FAQ
Frequently Asked Questions and Answers
Frequently Asked Questions about Studying Abroad
A: The fundamental difference is the difference between three imaging cores and how one imaging core synthesizes the screen. 3DLP and 3LCD have three imaging cores, the screen is synthesized in the projector, and the viewer can see the finished product directly.1-DLP has only one imaging core, and the screen needs to be handed over to the viewer to be synthesized, if the viewer is a person, it will be synthesized by the brain, which is often tiring to the brain and the eyes, and if the viewer is a camera or a cell phone, it will be synthesized by the CPU, which often causes rainbow and trailing shadows. If the viewer is a camera or a cell phone, it is synthesized by the CPU, which is often characterized by rainbow and shadow dragging.
AIn a word, there is an essential difference: 3DLP is imaging by the way light is reflected or not, and 3LCD is imaging by the way light is transmitted or not.
A difference in principle: The micro-reflector of 3DLP is a mechanical actuator, which is designed to be turned on and off when it is ordered to do so!
The LCD sub-division of the 3LCD is "soaked" in a "swimming pool" in which electricity is applied to force it to perform actions, but there are always those who are "not afraid of electricity"!
Other differences: The entire optical path is completely closed after the 3DLP lens is mounted, except for the difference in cooling efficiency, no matter whether it is cooled or liquid-cooled.
Brightness degradation due to dust.3LCDs could not be fully sealed in the optical path under the pre-production technology, and the dust led to the loss of brightness.
The light decay is always present and irreversible.
A: To summarize, there are three main reasons:
1. Super-complex structure: 3LCD technology has very high requirements on light, which usually consists of P-waves, S-waves (transverse and longitudinal) and stray waves, and LCD can only deal with S-waves. Therefore, it is necessary for the light to be sorted out and discarded from P-waves and stray waves through PBS, polarizer, etc., before entering the LCD, and then the S-waves are transformed into P-waves by LCD, and then the leaked S-waves are treated by means of optical compensation, pre-polarization, and polarization before projecting out to form images. Finally, the S-wave is processed by optical compensation, pre-polarization, polarization, etc. before it is projected to form an image. It is complicated, isn't it? When this series of light source elements are exposed to high intensity light for a long period of time, they will quickly turn to low light, and the image will start to have problems such as uneven brightness. ......
2. Liquid crystal sub-division disobedient: 3LCD controls liquid crystal sub-division by energizing the "swimming pool". Due to the difference of sub-division's tolerance and sensitivity, there will always be uncontrolled sub-division, so light leakage, delay, poor shutdown, incomplete opening ......
3. The opening ratio is not going up: Each pixel of the 3LCD has to be connected to the control and signal wires, which will block the light from passing through, which means that the ratio of the opening ratio for the light is very difficult to be raised. ......
A: There are two reasons for this: one is because it is cheap! 3LCD projectors are the cheapest in terms of brightness and resolution, and low prices come at the expense of stability, reliability, and durability.
...... for a change. When price is the only reason not to buy 3DLP, don't push for performance ......
Two this is actually propaganda on the deliberate misinterpretation as well as misunderstanding, if you count the micro-projection, DLP projector sales to far more than 3LCD hundred times ......
A: First, Texas Instruments (T.I.) sells DLP imaging chips, DMD, in accordance with the size, resolution, etc., divided into several decades of grade, as small as 100 yuan of micro-projectors, up to several million projectors can be purchased from the T.I. to the appropriate DMD chips.
Even the same grade of DMD is sold to T.I.-certified projector manufacturers at different technology levels, depending on the high or low quality, yield, etching accuracy, etc.
Distinction: A projector manufacturer with the highest level of T.I. certification can produce a movie projector.
In addition to the differences in core grades, the following designs are required to be performed independently by each manufacturer after receiving the cores:
1. Optical path design, 2. Prism material, 3. Blackhole range, 4. Frequency refreshment
5. Heat dissipation efficiency, 6. Lens work, 7. Laser light source ......
These will directly affect the brightness, contrast, clarity, life span, and many other user-related properties and parameters of the entire unit.
A: RGB tricolor lasers were the most advanced laser technology in the past, and were the first choice for ultra-high brightness and spectral 3D, but they have lost their gamut advantage and are no longer the preferred technology for cinema projectors, and fourth-generation monochrome laser technology has been able to satisfy the gamut requirements of cinema projectors.
Fourth-generation monochrome laser technology no longer requires the addition of red light to increase the red light rate, as the level of technology has been raised to a point where the red light rate in blue-white synthesized white light is sufficiently high.
The third and previous generations of monochromatic lasers were severely deficient in red light in the dyed plasma due to the limitations of the fluorescence technology, resulting in a substandard red light rate and the need for a separate and additional red light source to supplement the red light in order to produce a beautiful red color.
A: Different resolutions: Today's movie cameras have a resolution of 4096*2160, while the resolution of a comparable workstation is 3840*2400. If a movie camera is used as a workstation, the 3840*2400 signal output from the control server becomes a 3456*2160 display, which is not only 640 pixels horizontally, but also wastes 15.621 lumens of the TP3T's brightness. Not only was 640 pixels less used horizontally, but more importantly, 15.621 lumens were wasted, which is a waste of 3124 lumens for a 20,000 lumen projector that does not display resolution one-to-one.
Functional design is different: Cinema cameras are installed and fixed by default, so they are not designed for various adjustments. The most important thing is that cinema cameras require pixels to go in and out all the time, and once adjusted, the image will be distorted and exceeded, so cinema cameras do not support basics of correction and splicing and fusion, which makes the use of cinema cameras in your workplace unsuitable.
Differences in Heat Dissipation: Cinema cameras are designed with only the constant temperature and humidity environment of a movie theater room and good dust control in mind, so not much consideration is given to heat dissipation, dust prevention, etc., and thus reliability and durability will be compromised once they are in use.