Development of Novel Technology in Reducing Speckle Noise in Projectors and Displays using Laser Light Source by DNP

December 9, 2010 · Filed Under Trendy Products · Comments Off on Development of Novel Technology in Reducing Speckle Noise in Projectors and Displays using Laser Light Source by DNP 

In spite of LED’s advantages over high pressure mercury lamp as a light source for displays, projectors as well as illumination, offering a longer life cycle and reduced power consumption, not to mention the possibility of downsizing the optical components, the laser light source are prone to generate speckle noise which appears as a fine mottled splashing causing scintillation. To overcome this issue, DNP has developed a new technology which is based on multi-recording and light-forming functions of holograms with an aim to reduce speckle noise that is the cause of scintillation. DNP has used volume hologram functions capable of reproducing the same image in the same position no matter which point on the hologram the light beam is projected upon. Read more

Release of 3D Ready Ultra Short-Focus Projectors by SANYO

May 21, 2010 · Filed Under Trendy Products · 1 Comment 

SANYO made an announcement on release of world’s shortest-focus 3D ready ultra short focus projectors. The new PDG-DWL2500J model can be set up either vertically or horizontally. With projection distance of just 32 cm, a projection of an 80 inch image is possible, where the distance between projector unit and screen is only 2.4 cm. This is all possible thanks to newly developed ultra short-focus mirror projection optical unit. But this is not all, when the distance between projector unit and screen surface is 0 cm, a 74 inch image can be projected from a position close to the screen, allowing presenter to stand in front of the projected image without casting a shadow on the screen or being bothered by projector’s light. The maximum available projection image size is 110 inch. Read more

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