Just a few seconds in the hologram!Light modeling 3D printer advances again

The bright green laser rays were released, and when the mucus poured into the plate shines, the shape of the paper clip emerged where nothing was done.At first, the outline that was blurred gradually became clearer.The clip is pulled up from the liquid after 5 seconds, and it can be used by removing excess resin.

The basic principle is a 3D print using already a proven light.It is a method in which multiple laser lights (such as ethylene or vinyl chloride, etc., when many monomers are combined, it becomes polyethylene or poly chloride) and modeled into plastic.However, other techniques are scanning one laser light back and forth, exciting one layer, and modeling three -dimensional objects, while the new system is a three -dimensional light -illuminated field (that is, hologram), all over three -dimensional objects.The point of modeling at a stretch is different.The time required for 3D prints can be greatly reduced.

The holograph irradiation semiconductor chip, which hits the heart of the device printed with a paper clip in the demo image below, is designed and manufactured in the startup company Dakuri (San Francisco and the British Milton Keans labs.)is.Dakuri produces smart glasses similar to Microsoft's HoloLens and in -vehicle head -up displays (150,000 Jaguar Land Rover cars).

The advantage of Dakuri's semiconductor chip is that holograms can be imaged without using complex optical parts.A fine lattice that forms a crystal that can be adjusted to one silicon wafer, controls the intensity, delay time, and phase of the laser rays on the chip surface.By adjusting the crystals with software, a wide variety of light interference patterns are created, and a three -dimensional irradiation field is created.

The Dakuri's development team made a hologram in various optical curing monomers in the container with a demonstration using chips.Currently, small objects such as paper clips can be molded in about 5 seconds.With a conventional 3D printer, it takes a few minutes.

Dakuri's Chief Scientist in Dakuri has a "layer of layer" in the hologram system that can create the target shape with one irradiation, which can be structurally weak, and can be made by scanning a laser rays.It is said that there is a merit that cannot be done.The chief scientist of Blackley says that the support structure required in the modeling system that stacks one layer is unnecessary in the hologram method, and it will be completed at almost the same time as a small model.

However, there are restrictions.With the current hardware, only small things that are not tall, like the paper clips in the video, can be shaped.However, if a large holograph irradiation semiconductor chip can be used for a higher shape, Dakuri is trying to expand the size of the device.

According to David Lakatos, the highest product (CPO) of the 3D print specialized corporate foam lab, heat can also be a problem.Lakatos CPO is a process of solidifying the light stiffening resin of liquids.As a result, it is said that each part may dissolve in a relatively large model.

Nevertheless, Dakuri's holograph irradiation semiconductor chips can be applied to other than 3D prints.Dakuri is currently producing a scalable display, but plans to apply holograph irradiation semiconductor chips for 3D prints to displays that display information on multiple sides.There is already a head -up display prototype that reflects another image at one side of the windshield, and the image can be projected in real time at the same resolution as the 720p HD display.

However, it requires a huge amount of computing processing capacity to project images in three dimensions, not plane.Professor Durpin Chu, Professor Darpin Chu, the Cambridge University Tip Electronics R & D Center, "Calculates 1 million points to generate images of 1000 x 1000 pixels. Generate three -dimensional images at the same resolution.To do, it is necessary to calculate 1 billion points over 1000 again. In principle, there is the same problem, and in reality, the performance of hardware cannot catch up. "Stated.

Currently, Dakuri uses up the processing capacity of the computer in the two -screen device.Dakuri is optimistic that if the processing performance increases, it will be able to project three -dimensional images in real time immediately.