What is a photoelectric mouse

Photoelectric Mouse is a kind of hardware device which is used to detect the displacement of mouse by infrared ray or laser, convert the displacement signal into electric pulse signal, and then control the movement of the cursor arrow on the screen by program processing and transformation. The photoelectric sensor of the photoelectric mouse replaces the traditional rolling ball. This type of sensor needs to be used in conjunction with a specially designed pad with a striped or dotted pattern.

Introduction of Optical Mouse

Full name: Infrared ray scattering light spot irradiation particles with light-emitting diode and photoelectric sensors of the source of pulse signal sensor

Photoelectric Mouse is a kind of hardware device to control the movement of the cursor arrows on the screen by detecting the displacement of mouse, converting the displacement signal into electric pulse signal, and then processing and converting the program. The photoelectric sensor of the photoelectric mouse replaces the traditional rolling ball. This type of sensor needs to be used in conjunction with a specially designed pad with a striped or dotted pattern.

The photoelectric mouse uses the intermittent device to judge the signal, its most obvious characteristic is needs to use a special reflector as the mouse movement pad. The main feature of this mat is its fine black and white dots. This is because, at the bottom of the optical mouse, there is a light-emitting diode and two mutually perpendicular photosensitive tubes. When the light-emitting diode to the white dots and black spots, will produce refraction and refraction of two states, and photosensitive tube to the two states after processing will produce the corresponding signal, thus prompting the computer to respond. Without that pad, the optical mouse would not work.

The principle of optical mouse

Optical Mouse Photoelectric mouse has a light-emitting diode, through the light emitted by it, you can illuminate the bottom surface of the photoelectric mouse (this is the bottom of the mouse will always glow reason). Thereafter, a portion of the light reflected from the bottom surface of the optical mouse is transmitted to an optical sensing device (micro-imager) for imaging through a set of optical lenses. In this way, when the optical mouse moves, the mobile trajectory will be recorded as a group of high-speed shooting coherent images, the interior of the optical mouse a dedicated image analysis Chip (DSP, that is, digital microprocessor) analysis and processing. By analyzing the location of the feature points on these images, the chip is used to judge the direction and distance of the mouse, so as to complete the positioning of the cursor.

Optical Mouse composition

Wireless Optical Mouse Photoelectric mouse is usually composed of the following parts: optical sensors, optical lenses, light-emitting diodes, interface microprocessors, touch keys, rollers, wiring, PS/2 or USB interface, Shell and so on.