What is ALPD® technology?

ALPD, or Laser Display Technology, is a technical route based on laser-excited rare-earth materials and mixed multi-color lasers for image display. It is a clever optical architecture based on the optical extension Etendue proposed by Light Peak Technology in 2007, which can not only retain the high brightness of the laser, but also overcome the scattering defects of the traditional laser display technology, and through continuous evolution and evolution, to realize the process of using laser as a light source applied to the display or virtual display.


Origin of Technology

From ancient flames and candles to incandescent lamps, metal halide lamps, xenon lamps, light-emitting diodes, lasers… various lighting technologies have been more or less applied to projection systems. The advancement of projection technology has been inseparable from the progress of lighting technology since its inception. The advancement of lighting technology directly determines the quality of the projected image.

The term “laser” is an acronym for “Light Amplification by Stimulated Emission of Radiation”. It is another major invention of mankind since the 20th century, following nuclear energy, computers, and semiconductors. It is known as the “fastest knife”, the “most accurate ruler”, and the “brightest light”.

In 1916, the renowned physicist Albert Einstein (Nobel Prize in Physics winner in 1921) pioneeringly proposed the working principle of lasers, pointing out the theoretical feasibility of lasers. In 1960, American scientist Theodore Maiman used ruby as a medium to create the first working laser in human history. In 1992, Japanese scientist Shuji Nakamura (Nobel Prize in Physics winner in 2014) successfully developed a high-power, high-efficiency gallium nitride-based blue LED. Four years later, Shuji Nakamura successfully realized the gallium nitride-based blue laser.

Since then, lasers, as the brightest artificial light source that humans can currently achieve, have gradually come into people’s view as lighting sources. Compared to traditional light sources, lasers have higher brightness, higher energy efficiency, good monochromaticity, small structural size, and long life. They are the ideal light source technology for improving the brightness of projection systems.

ALPD technology keenly perceived the feasibility of combining laser technology with rare earth materials for high-brightness projection light sources. It creatively proposed the ALPD technology framework, achieving a laser light source with low cost, high brightness, wide color gamut, and no speckle. This revolutionary solution overcame the difficulties encountered in the industrialization of laser displays, realized the civilian use of laser technology, and gradually applied it to displays, lighting, and more.

Continuous Innovation ALPD®

For over a decade dedicated to technology, Appotronics has evolved from ALPD®1.0 to ALPD®5.0, bringing not only advantages in high brightness, good color, and no speckle, but also elevating the height of technology and industry. A technical system has been gradually formed, with continuous innovation.

1. In 2007, Appotronics proposed ALPD laser display technology route and applied for patent
2. Revolutionary solution to the difficulties encountered in the industrialization of laser display
3. High brightness, high color gamut, low scattering, more simple architecture

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What is ALPD®? 1

1. Successfully developed in 2012
2. High brightness
3. Visual Security Design
4. The same light path, good uniformity

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What is ALPD®? 2

1. Successfully developed in 2015
2. Light source efficiency increased by 20%
3. DCI P3 color gamut
4. 100% color brightness

What is ALPD®? 3

1. Successfully developed in 2018
2. Larger color gamut (color gamut value up to 98.5% of Rec.2020)
3. The application of ALPD ® 4.0 product contrast ratio of up to 2500:1 far beyond the theater standards
4. Higher luminous efficacy (30% higher efficiency than ALPD® 3.0 generation products)

What is ALPD®? 4

1. Officially released in November 2022 to take advantage of more flexible core devices
2. Larger color gamut (gamut values up to 120% Rec.2020, 165% DCI-P3, 210% Rec.709)
3. Higher luminous efficacy (ALPD 5.0 Pro>20lm/W; ALPD 5.0 Lite>10lm/W)
4. Smaller size (0.47/0.33/0.23 platform, more flexible optical configuration)

Advantages of ALPD® technology

The overall light efficiency of the ALPD® digital projector is much higher than other light sources.

High light efficiency leads to high brightness. With the use of ALPD® technology, the brightness reaches up to 60,000lm, maintaining a leading position in the world.

The color performance meets the DCI cinema-level standard, with the maximum color gamut reaching 120% of Rec.2020.

Products using ALPD®4.0 can achieve a contrast ratio of 2500:1, far exceeding cinema standards.

The product has undergone various experimental tests, including aging tests, dustproof tests (meeting IP5X dustproof level), heat dissipation tests, structural strength tests, and high temperature and humidity tests.

Market Coverage

Essentially, Appotronics has invented a new lighting technology and transformed this technology into products that have become a part of people’s daily lives, opening up a broader visual horizon for everyone. Using the light of technology to create a beautiful visual world. New light, new life.

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