level 10
Migelei
楼主
Dear Ritot Supporters,
Here is the promised update. More developing information, including prototype will go out tomorrow and on the next week.
About Projection Technology
There are several microprojection technologies, including DLP Pico, Microvision PicoP, OnDeGo, LCOS versions by Syndiant and 3M, as well as FLCoS. They all use LEDs as backlights and differ only in the way they project images. However, in reality, only two technologies are currently widely used, they are DLP Pico micromirror technology and the liquid crystal FLCoS.
The Pico projector design is similar to that of single-matrix DLP-projector, except that it uses colored LEDs instead of the light filter disk. The picture is generated by DMD matrix with lots of tiny mirrors, reflecting light from three high power LEDs, which is red, green and blue. Each micromirror corresponds to a pixel in the image, and a color picture is created by sequential switching of LEDs with high frequency imperceptible to humans.
The advantages of DLP Pico include realistic color and high contrast ratio (1000: 1). Screen resolution depends on the matrix. The absence of complex mechanics increases the overall reliability of the system, whereas low heating allows embedding projection modules in almost any device with passive cooling.
FLCoS Projection Technology. The vast majority of Pico projectors sold nowadays use this technology. Such system is based on a chip with LCD panel equipped with a mirror backing. Powerful color LEDs illuminate the panel; the light is reflected from spots where a cell is open, forming a bright pixel, and dark pixels from the closed cells. The principle of forming a color image is the same as in the DLP Pico: red, green and blue LEDs sequentially illuminate the liquid crystal panel with high frequency.
LCD system is cheaper and more compact, as well as more economical than a DLP. Its disadvantages include noticeably worse color reproduction (in particular, the lack of “real” black) and lower contrast (the average contrast - 200:1).
More about DLP/DMD Texas Instruments
Texas Instruments (TI) with their MEMS Digital Light Processing (DLP) technology:
Spatial Light Modulators (SLM) modulates the incoming light in accord with the input – its phase, intensity, polarization, and direction. TI SLM-modulators include selective addressable movable and deformable digital micromirrors modulating the light’s direction or phase via reflection.
2014年08月08日 05点08分
1
Here is the promised update. More developing information, including prototype will go out tomorrow and on the next week.
About Projection Technology
There are several microprojection technologies, including DLP Pico, Microvision PicoP, OnDeGo, LCOS versions by Syndiant and 3M, as well as FLCoS. They all use LEDs as backlights and differ only in the way they project images. However, in reality, only two technologies are currently widely used, they are DLP Pico micromirror technology and the liquid crystal FLCoS.
The Pico projector design is similar to that of single-matrix DLP-projector, except that it uses colored LEDs instead of the light filter disk. The picture is generated by DMD matrix with lots of tiny mirrors, reflecting light from three high power LEDs, which is red, green and blue. Each micromirror corresponds to a pixel in the image, and a color picture is created by sequential switching of LEDs with high frequency imperceptible to humans.
The advantages of DLP Pico include realistic color and high contrast ratio (1000: 1). Screen resolution depends on the matrix. The absence of complex mechanics increases the overall reliability of the system, whereas low heating allows embedding projection modules in almost any device with passive cooling.
FLCoS Projection Technology. The vast majority of Pico projectors sold nowadays use this technology. Such system is based on a chip with LCD panel equipped with a mirror backing. Powerful color LEDs illuminate the panel; the light is reflected from spots where a cell is open, forming a bright pixel, and dark pixels from the closed cells. The principle of forming a color image is the same as in the DLP Pico: red, green and blue LEDs sequentially illuminate the liquid crystal panel with high frequency.
LCD system is cheaper and more compact, as well as more economical than a DLP. Its disadvantages include noticeably worse color reproduction (in particular, the lack of “real” black) and lower contrast (the average contrast - 200:1).
More about DLP/DMD Texas Instruments
Texas Instruments (TI) with their MEMS Digital Light Processing (DLP) technology:
Spatial Light Modulators (SLM) modulates the incoming light in accord with the input – its phase, intensity, polarization, and direction. TI SLM-modulators include selective addressable movable and deformable digital micromirrors modulating the light’s direction or phase via reflection.