METHOD FOR GENERATION OF HIGH RESOLUTION IMAGE IN LENS-FREE CAMERA Russian patent published in 2022 - IPC G01S3/782 G02B27/10 

FIELD: optics.

SUBSTANCE: invention relates to the field of optics, in particular to methods and means for optical conversion of electromagnetic emission; it can be used in generation of an optical object image in miniature lens-free cameras. The claimed method for generation of a high resolution image in a lens-free camera by a shadow from emission on a detector matrix, formed as a result of emission passage through an encoding mask consisting of holes and jumpers, encoded by a random rule, consists in that the image from the object comes in the form of emission to a division prism and is divided into two images, one of which directly passes through the encoding mask, and the other one, through a reflecting prism, passes through the second encoding mask inverse to the first encoding mask. Moreover, both images, using encoding masks, convert coming images into a diffraction pattern in the form of speckles, after which obtained speckle images come in the form of optical signals to two detector matrices, which are made in the form of matrices of devices with a charge connection, for being converted into electrical signals. Next, images, being digitalized using analogue-to-digital converters, come to processing in a computer.

EFFECT: increase in light efficiency and improvement of the quality of a restored image of an initial object.

1 cl, 3 dwg