Abstract: PSF coding has become well known in recent years. Although it enables significant increases in the depth of field, defocus introduces artifacts in images that are a major detraction from the final image quality. A method is described that enables the deduction or defocus and consequently the removal of these artifacts. The principle of the disclosed techniques involves iteratively adjusting the restoration algorithm according to a chosen image metric and choosing the defocus parameter that yields the image the lowest level of artifact.

Abstract: The imaging device includes an image sensor, a lens member adapted to focus external radiation towards the image sensor and a heat shield to inhibit thermal damage to the lens member. The heat shield may include an optical filter between the lens member and the external radiation.

Abstract: An optical mouse includes a base and a lens for forming an image on an image sensor package. An LED projects light into the field of view of the lens via a prism. The prism enables the LED to be set horizontally, which reduces optical losses. The prism and lens may form part of a single molding.

Abstract: An optical device includes a stack having a transparent block with a rear face fixed on a front face of an integrated chip support. A front face of the transparent block that is parallel to its rear face is affixed to a rear face of a converging lens. The lens has a convex frontal surface. A diaphragm is interposed and fixed between the block and the lens. A housing for the optical device is made of an opaque material. A peripheral wall of the housing encloses the stack. An annular front part of the peripheral wall bears on a periphery of the convex frontal surface of the lens so as to define a frontal opening located in front of a central part of the lens.

Abstract: A method for manufacturing an image sensor including an array of pixels and an imaging lens exit pupil for focusing rays of light onto the array of pixels is provided. Each pixel includes a light sensitive region and at least one optical element associated therewith. The method includes positioning the at least one optical element for each pixel relative to its associated light sensitive region based upon a range of acceptable angles of incidence for the rays of light from the imaging lens exit pupil.

Abstract: An imaging assembly for an image sensor may include a lens, a transparent substrate and two aspherical optical coatings on each side of the substrate. The imaging assembly can also incorporate an opaque coating with an opening in-line with the lens to form an aperture, an anti-reflection coating, and an infrared filter coating.

Abstract: An optical mouse includes a base and a lens for forming an image on an image sensor package. An LED projects light into the field of view of the lens via a prism. The prism enables the LED to be set horizontally, which reduces optical losses. The prism and lens may form part of a single molding.

Abstract: A method for manufacturing an image sensor including an array of pixels and an imaging lens exit pupil for focusing rays of light onto the array of pixels is provided. Each pixel includes a light sensitive region and at least one optical element associated therewith. The method includes positioning the at least one optical element for each pixel relative to its associated light sensitive region based upon a range of acceptable angles of incidence for the rays of light from the imaging lens exit pupil.

Abstract: An optical device includes a stack having a transparent block with a rear face fixed on a front face of an integrated chip support. A front face of the transparent block that is parallel to its rear face is affixed to a rear face of a converging lens. The lens has a convex frontal surface. A diaphragm is interposed and fixed between the block and the lens. A housing for the optical device is made of an opaque material. A peripheral wall of the housing encloses the stack. An annular front part of the peripheral wall bears on a periphery of the convex frontal surface of the lens so as to define a frontal opening located in front of a central part of the lens.