What Is the Difference Between an Optical Mouse and a Laser Mouse?

The laser mouse is actually an optical mouse, but it uses laser instead of ordinary LED light. The advantage is that it can pass through more surfaces, because the laser is Coherent Light (coherent light), almost a single wavelength, and can maintain its intensity and waveform even after long distance propagation; while LED light is Incoherent Light (non-coherent light) .

Laser mouse

Laser mouse

Resolution

Which is the sensitivity of the mouse.

The process of obtaining images by the laser mouse sensor is based on the laser light generated on the surface of the object.

Divided into wired mouse and

The wavelength of the laser used on the mouse is 850nm. In the infrared region, we can't see it with the naked eye, so many people distinguish between the laser mouse and the optical mouse to see if there is red light in the bottom case. The laser mouse that does not emit light is wrong. Of course, the optical mouse that emits red light is a real laser mouse, and the other is a fake laser mouse. The LED of the fake laser mouse uses a common infrared light. LEDs are made with ordinary optical sensors. Although ordinary infrared LEDs have the same wavelength as the laser used by the mouse and cannot be seen by the naked eye, the laser is a strong light. The working principle of ordinary infrared LEDs is like our ordinary optical mouse. exactly the same.

The cause of fake lasers has led consumers to mistakenly believe that there is no difference between a laser mouse and an optical mouse, making it difficult to popularize laser mice in China. So how to distinguish between real and fake laser mice: I have seen the interface situation, the most typical is to put a piece of glass on the table, and the one that can work well on glass is a laser mouse. A fake laser mouse cannot be moved because of a fake laser. The emitted light has spread out through the glass long ago, and there is no way to reflect it back to the sensor of the mouse. The second question is the mouse IC (sensor) model, which is specially used for laser sensors: Agilent (Avago) A6010. Original phase (PAN) 3601 3602 and ST (STMicroelectronics) 5363 5366.