Fingerprint equipment

Technical parameters: fully meet the GA standards of the Ministry of Public Security. 1. Fingerprint capture window size: 36 mm × 36 mm 2. Effective image size: the error is ± 0.3 mm 3. Image pixels: 640 X 640 pixels 4. Image Center Deviation: X, Y direction ≤10 pixels 5. Image Resolution: Image Resolution: 500 DPI with an error of ± 0.66% . Image distortion: ≤0.66% 7. Image Gray scale: fingerprint image gray scale of each pixel to 2568. Image background gray value: 240 ~ 2559. The unevenness of image background gray scale: ≤8% 10. Gray dynamic range: ≥180 Grade 11. Ambient Light: When the ambient light ≤300 lx, the fingerprint image can be normally collected 12. Acquisition speed: ≥25 frames/s 13. Fingerprint Image Quality: Dark background optical design, that is, the optical imaging light source is directly below the acquisition prism, the infrared light from the light source produces total reflection at the fingerprint mastoid line and diffuse reflection between the two mastoid lines, in this way, the gray value of the non-fingerprint region (background region) image is close to 0, that is, the dark background, which can effectively improve and enhance the gray range of the fingerprint image, thus effectively improve the image quality of dry, peeling, adhesion, elderly, etc. . The device as a whole contains the driver.

Colors and styles can be customized