DLP technology is a fully digital display solution. It enables corporate, home entertainment, and cinema projection systems to better display images and graphics.
Projection technology precisely controls light to repeatedly display fully digital images.
The images are eye-catching bright in any light and crisp and clear at any resolution.
Follow iSEMC’s article to learn more about DLP
What is monochrome laser DLP?
Monochromatic laser technology:
Using a single blue laser light source, the yellow and green phosphors on the laser fluorescent color wheel are divided into red, green, and blue colors through a prism, and then projected on the DMD chip to form a projection display image.
Three-color laser technology:
The three primary colors of red, green, and blue are emitted by three-color lasers respectively, and can be directly imaged without passing through the fluorescent color wheel.
The Importance of Light Sources to DLP Systems
Among the many subsystems of the DLP system, the light source subsystem is a very important part and is usually designed as an independent subsystem.
It is generally composed of four parts: light-emitting components, power components, heat dissipation components, and structural components.
The importance of light source to the DLP system is reflected in:
Imaging quality：
the light source determines the initial values of system brightness, uniformity, and contrast, and plays a decisive role in the image quality of the DLP system.
Stability:
The light source subsystem usually generates a lot of heat and has a high temperature, so its stability also plays a key role in the stability of the DLP system.
In the early days of DLP system development, some manufacturers used dual light source systems to improve overall stability.
Maintenance cycle:
Light sources will face attenuation cycles and are relatively uncontrollable, causing changes in brightness, color, etc. after users use them for some time.
Among the many factors that determine the maintenance cycle, the light source plays a decisive role.
Maintenance costs:
Due to the different technological maturity and service life of different light sources, the price and frequency of components that need to be updated in the later maintenance period are different, resulting in different maintenance costs.
Common light sources for DLP systems
The four most common light sources currently used in DLP systems include UHP light source, LED light source, laser light source, and LED+laser hybrid light source.
However, the mixed light source can usually be regarded as a supplement to the LED light source, so only the other three light sources are introduced in detail here.
UHP light source:
UHP light source technology is mature and low-priced, but it also has some defects and is currently rarely used in the field of rear projection.
LED light source：
As a new type of light source, ED light source has its own RGB three primary color system and does not use a color wheel, so it has extremely excellent color gamut performance.
However, low brightness is a fatal flaw, because the use of multiple light bulbs at the same time also increases the probability of color drift.
Therefore, it is very suitable for indoor environments with extremely high color accuracy requirements, such as meteorological stations.
Laser light source：
The laser light source achieves high brightness which is difficult to achieve with LED light sources, which is crucial for large-scale engineering applications.
At the same time, it has a wide color gamut and is not prone to color drift, ensuring the application effect. But it is still immature and the price is relatively high.
The application of monochromatic lasers is still difficult to get rid of the fluorescent pink wheel.
Overall, the performance of the laser light source is outstanding. A breakthrough in LED light sources has been achieved in terms of brightness and other aspects.
However, considering the price factor, laser light sources are also suitable for mid-to-high-end projects.
iSEMC DLP products adopt laser solid-state light source design, multi-channel input backup design, unique intelligent adjustment of color brightness, signal data transmission encoding technology and six color gamut adjustment, and other advanced technologies.
The unit has a built-in high-performance embedded splicing processor, supporting Full HD signal input display that has the characteristics of long life, maintenance-free, high brightness, strong color expression, low power consumption, green and environmental protection.
DLP advantages
High-brightness three-color laser light source
The product adopts a high-brightness three-color laser light source DLP movement, with a brightness of up to 1500/2000 ANSI lumens (2 times the brightness of the LED light source), and a lifespan of up to 60,000 hours, which is 10 times the lifespan of the UHP light source.
It has the characteristics of high brightness, long life, maintenance-free, bright colors, low power consumption, and green environmental protection.
Broad color gamut, brighter colors
The three-color laser light source has an ultra-wide color gamut space, which is closer to the international standard color gamut value.
The color gamut coverage can reach 90%, which can achieve 2 times the color reproduction capability of traditional light sources, and can restore a more perfect color of true vision.
The light source changes smoothly, and the light machine attenuates very little with working time, providing fuller color purity and more uniform and lasting high brightness for image display, and the color of the picture is always as bright as new;
Intelligent brightness and chroma adjustment
Use intelligent color adjustment technology to maintain picture color consistency and reduce color rendering differences between screens;
Built-in smart brightness sensor automatically adjusts the brightness to make the entire screen consistent;
Convenient for later use and maintenance;
Full HD signal input, multi-channel redundant backup
Rich signal interfaces, multi-channel input redundant backup;
Compatible with traditional analog RGB signals, video signals of various formats and standards;
Supports full digital high-definition image signals from 720P to 1080P;
Final thought
DLP technology has been widely used to meet various demands for excellent visual image quality.
It is also the most versatile display technology on the market. It's the only display technology capable of supporting both the world's smallest projectors and the largest movie screens.
This technology enables images to achieve extremely high fidelity, giving clear, bright, and lifelike colors.
