Laser x Optical
Well, if you still interested...
Hope it helps you.
From http://www.dvhardware.net/review70_logitech-mx1000.html
How Optical mice work
Logitechs revolutionary laser-powered mice unite the precision of laser illumination with the proven technology of sensor-based motion tracking in a way never done before. To detect movement, all sensor-based mice, regardless of light source, use sensors to read the light beam as it is reflected back into the mouse from the tracking surface
(Picture 1)
Each second, Agilents optical sensor inside Logitechs mouse takes more than 6000 snapshot fingerprints, converts the information to digital format and uses the changes in fingerprints to calculate the mouses precise location, speed and direction of movement. Armed with that knowledge, Logitechs driver software then communicates with the computers operating system, which moves the cursor image on the screen.
Surface Smoothness (or roughness):
The measure of a surface is defined as the peak-valley surface roughness of that surface. To eliminate measurement noise or outliers, an average of 20 of the highest peak-valley points on the surface in question was used as the final measure of surface roughness. Monotonic surfaces were used for consistency in results.
(Picture 2)
With enhanced image contrast enabling a 20x improvement, the laser mouse can track on surfaces where the LED mouse cannot.
A laser-based mouse can see more detail
Laser illumination reveals structure that an LED simply cannot express. The coherent nature of laser light creates patterns of high contrast when its light is reflected from a surface. The pattern appearing on the sensor reveals details on any surface, even glossy surfaces that would look totally uniform when exposed to the LED incoherent illumination. The precision image sensors then have no difficulties in tracking on these patterns and calculating position and movement. This is how laser enables tracking on virtually any surface.
Fábio.
devilot76 said:There is a difference. I don't know the technicalities... but they are different.I'll shush and let someone else elaborate.
Well, if you still interested...
Hope it helps you.
From http://www.dvhardware.net/review70_logitech-mx1000.html
How Optical mice work
Logitechs revolutionary laser-powered mice unite the precision of laser illumination with the proven technology of sensor-based motion tracking in a way never done before. To detect movement, all sensor-based mice, regardless of light source, use sensors to read the light beam as it is reflected back into the mouse from the tracking surface
(Picture 1)
Each second, Agilents optical sensor inside Logitechs mouse takes more than 6000 snapshot fingerprints, converts the information to digital format and uses the changes in fingerprints to calculate the mouses precise location, speed and direction of movement. Armed with that knowledge, Logitechs driver software then communicates with the computers operating system, which moves the cursor image on the screen.
Surface Smoothness (or roughness):
The measure of a surface is defined as the peak-valley surface roughness of that surface. To eliminate measurement noise or outliers, an average of 20 of the highest peak-valley points on the surface in question was used as the final measure of surface roughness. Monotonic surfaces were used for consistency in results.
(Picture 2)
With enhanced image contrast enabling a 20x improvement, the laser mouse can track on surfaces where the LED mouse cannot.
A laser-based mouse can see more detail
Laser illumination reveals structure that an LED simply cannot express. The coherent nature of laser light creates patterns of high contrast when its light is reflected from a surface. The pattern appearing on the sensor reveals details on any surface, even glossy surfaces that would look totally uniform when exposed to the LED incoherent illumination. The precision image sensors then have no difficulties in tracking on these patterns and calculating position and movement. This is how laser enables tracking on virtually any surface.
Fábio.