A fingerprint identification module includes a lens, an optical sensor, and a light filtering component located between the lens and the optical sensor, where a thickness of an edge area of the light filtering component is greater than a thickness of a central area of the light filtering component, and a thickness of the light filtering component decreases gradually along a direction from the edge area to the central area.

A cover plate and a manufacturing method thereof, an electronic device are disclosed. The cover plate includes an operation area, the operation area includes an identification area and a non-identification area, the cover plate includes a contact surface, the contact surface includes a first contact surface and a second contact surface, the first contact surface is in the identification area, the second contact surface is in the non-identification area, and the first contact surface and the second contact surface have different contact properties.

Embodiments of the present application discloses an under-screen fingerprint identification apparatus, which includes: a micro-lens array, configured to be disposed under the backlight module of the liquid crystal display screen; at least one light shielding layer, disposed under the micro-lens array, wherein the light shielding layer is provided with a plurality of light transmission holes; a photo detecting array, disposed under the light shielding layer; wherein the micro-lens array is configured to converge an optical signal with a specific direction passing through the backlight module to a plurality of light transmission holes, and transmit an optical signal with a non-specific direction passing through the backlight module to a light shielding region of the light shielding layer, wherein the optical signal with the specific direction is transmitted to the photo detecting array through the plurality of light transmission holes.

An apparatus for direct optical capture of security-relevant objects such as at least skin prints and documents produces a contrast between skin ridges and skin valleys in direct optical sensors for capturing skin prints in the range of contrast of conventional systems with frustrated total internal reflection. A contrast enhancing layer is provided with one contrast shield associated with each light-sensitive element of the sensor layer. The associated contrast shield is arranged at a distance above the light-sensitive element and has a surface area at least as large as an active region of the light-sensitive element). The contrast shield is arranged at a distance above the light-sensitive element such that at least 60% of the active region is covered. The illumination layer has a plurality of point light sources which emit in direction of the placement surface in an angular area limited for preventing total internal reflection.

A lighting lens for a biometric measurement device comprises a paraboloidal or ellipsoidal reflector with symmetry of revolution, and a dioptric surface that has two different refractive power values in two perpendicular directions, said two refractive power values being negative or zero. Such a lens can be produced in the form of a block of transparent material and be used in a biometric measurement device. In particular, it makes it possible to capture skin prints as an image with an exposure time that is short.

The present application relates to a fingerprint identification module and a display device. The fingerprint identification module includes: a first lens assembly; a second lens assembly with a primary optical axis not parallel to a primary optical axis of the first lens assembly; a reflecting mirror assembly, including a reflecting mirror and a rotating shaft coupled to the reflecting mirror, wherein the rotating shaft can drive the reflecting mirror to rotate, and the reflecting mirror includes a reflecting surface; and a light-sensitive element located at a light exiting side of the second lens assembly. The first lens assembly converges fingerprint-reflected light and projects the fingerprint-reflected light onto the reflecting surface, the reflecting surface reflects the fingerprint-reflected light to the second lens assembly, the second lens assembly converges the fingerprint-reflected light to the light-sensitive element, the light-sensitive element converts the fingerprint-reflected light into an electrical signal to identify fingerprint information.

A fingerprint identification module, a fingerprint identification device and a display device are provided. The fingerprint identification module includes a transparent substrate, an emission part, a receiving part and a moving part, wherein the emission part and the receiving part are provided adjacent to opposite edges of the transparent substrate, and the emission part and the receiving part are fixed on the moving part, wherein, light emitted from the light sources is incident in the transparent substrate at a first angle θ.sub.1 so as to be propagated in the transparent substrate in a total reflection form; the transparent substrate is provided with an adjusting structure configured to allow the light to exit; the receiving part is configured to receive the light exiting through the adjusting structure; and the moving part is configured to allow the emission part and the receiving part to be moved.

The invention relates to the field of biometric identification. The technical result consists in decreasing the overall dimensions and increasing the reliability of a system for registering papillary ridge patterns, while providing for reduced cost, high image quality, rapid operating speed and reduced energy consumption. The present system comprises a light source, an element which defines the position of a reading surface, an optical system, and a multi-element image receiver, wherein the reading surface is optically linked to the image receiver by rays passing through a guiding optical element, comprising a refractive surface and a reflective surface, by means of consecutive refraction on the refractive surface, reflection on the reflective surface and total internal reflection on the refractive surface

Devices and optical sensor modules are provided for provide on-screen optical sensing of fingerprints by using a under-screen optical sensor module that captures and detects returned light that is emitted by the display screen for displaying images and that is reflected back by the top surface of the screen assembly. Optical collimators are provided in the under-screen optical sensor module to enhance the optical imaging performance.

A fingerprint identification module including a cover plate, a fingerprint identification sensor, a first adhesive layer, and at least one light source is provided. The cover plate has an inner surface, an outer surface opposite to the inner surface, and a plurality of microstructures located at the inner surface. The fingerprint identification sensor is located under the microstructures and attached to the microstructures through the first adhesive layer, wherein the first adhesive layer is adhered between a portion of the microstructures and a portion of the fingerprint identification sensor, and an air gap is located between the other portion of the microstructures and the other portion of the fingerprint identification sensor. The at least one light source is located under the inner surface and adjacent to the fingerprint identification sensor.