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A Dot Projector Module is a compact optical component used in various technologies, most notably in facial recognition systems and depth-sensing applications.
It projects a pattern of structured light onto a surface or an object and then measures the deformation of the pattern to create a 3D map of the object’s surface.
This technology is commonly used in smartphones for secure facial recognition (Face ID in iPhones) and in augmented reality (AR) devices to create more accurate depth maps for virtual object placement.
Dot projectors are utilized in a wide range of applications such as projection mapping, projection displays, and augmented reality (AR).
A pattern of dots is projected onto various objects or surfaces to produce 3D images in projection mapping.
Projections are classified according to their class, case, and aspect.
All three of these properties speak to how the developable surface is related to the reference globe.
The class of a projection denotes which developable surface was used to construct the projection.
The Global Dot projector module market accounted for $XX Billion in 2022 and is anticipated to reach $XX Billion by 2030, registering a CAGR of XX% from 2023 to 2030.
Metalenz Launches Orion, the World’s Simplest, Most Compact Dot Pattern Projector.
The world’s simplest, highest performing dot pattern projectors, the Orion product line, were unveiled by Metalenz Inc., a pioneer in metasurface design and commercialization.
Dot pattern projectors, which are currently employed in mobile devices for features like facial recognition and 3D sensing, have caused logistical and aesthetic problems for cell phone manufacturers because they take up valuable space, interfere with the phone’s display, and require the intricate assembly of numerous distinct components.
With an optical module height that is thin enough for the most cutting-edge mobile devices, the Orion 50, the family’s product with the highest dot density, has more over 50,000 projected dots.
One meta-optic system replaces what was previously a six element stack (four refractive lenses, mirrors to create a folded optical path, and a DOE).
Orion 50 means significantly simpler production, smaller size, performance that is familiar to us, and reduced component count.
More phone manufacturers will be able to place sensors and cameras under glass displays, and eventually in users hands, thanks to this simplification.
On the other hand, smartphones with world-facing 3D depth sensing cameras provide photography effects like bokeh that seem professional and are enabling new AR applications.
Lasers are used to actively illuminate the area for depth sensing cameras, and specialised ToF sensors are used to capture reflected light.
The battery life of a phone can be significantly decreased by flooding the scene with light for extended periods of time and shining brighter in order to reach wider distances.
These go against the grain of developing more all-encompassing and immersive AR applications.
In order to increase the amount of light that returns to the image sensor, Orion 2.5 projects 2,500 high intensity dots onto the scene.
At distances of ten metres or greater, high resolution depth information is made possible.
Orion 2.5 reduces power consumption and opens a new market for augmented reality in mobile devices, head-mounted displays, and consumer electronics.
It eliminates system complexity and lowers the obstacles to integration and board acceptance while staying faithful to the foundations of the Orion family—simpler, brighter, better optics.
