skannauspään

A skannauspään, which translates to "scanning head" in English, is a crucial component in various imaging and sensing technologies. It is the part of a device responsible for capturing an image or data by moving across or illuminating a surface. The specific design and function of a skannauspään vary significantly depending on its application.

In flatbed scanners, the skannauspään typically contains a light source and an array of image sensors, such as CCD (Charge-Coupled Device) or CIS (Contact Image Sensor) elements. This head moves horizontally across the document or object placed on the scanner bed, capturing it line by line. The light illuminates the surface, and the sensors convert the reflected light into digital data, forming the image.

In 3D scanners, the skannauspään may employ different technologies like laser triangulation or structured light projection. A laser line or a pattern of light is projected onto the object, and cameras within the skannauspään capture how this light deforms across the object's surface. By analyzing these deformations, the system can calculate the object's three-dimensional shape.

Other applications for skannauspään include barcode readers, where a laser beam or an image sensor scans a barcode, and medical imaging devices, such as ultrasound machines, where a transducer acts as a skannauspään to generate internal images of the body. The core principle remains the same: controlled movement and detection to acquire spatial information.