Patent ID: 8953087
Filing Date: 2015-02-10
Classification: G02B,H01L,H04N

Abstract:
1. A camera system, comprising: an optics stack including two substrates, the optics stack forming an imaging system, each substrate having two surfaces that are parallel to each other and perpendicular to an optical axis of the imaging system, each opposing surface of the two substrates in the optics stack including a securing region at which the two substrates are to be secured to one another, the two substrates being secured together on a wafer level at their respective securing regions, a first surface of the two substrates including a first refractive surface of the imaging system and a second surface of the two substrates including a second refractive surface of the imaging system; a third refractive surface; a detector substrate having a light sensing area; and a cover structure protecting at least the light sensing area of the detector substrate, the optics stack being secured to an upper surface of the cover structure, a diameter of the first and second refractive surfaces in the optics stack being smaller than a diagonal of the light sensing area corresponding to the imaging system, wherein a diameter of the third refractive surface, which is a closest refractive surface to the light sensing area, is larger than diameters of other refractive surfaces in the optics stack and the third refractive surface is a concave surface.