Patent ID: 9748297
Date: 2017-08-29
CPC Classifications: B29D,G02B,H01L,H04N,Y10T

Claim:
1. A method of fabricating optical devices, the method comprising: providing first spacers on a first side of a wafer composed of a material that is substantially transparent to light of a predetermined wavelength or range of wavelengths; providing second spacers on a second side of the wafer, the first and second sides being opposite sides of the wafer; attaching a plurality of singulated lens systems to the first spacers, wherein the singulated lens systems are physically unattached from one another at least at a time just prior to attaching the singulated lens systems to the first spacers; adjusting a height of at least part of the second spacers to provide for FFL correction for one or more optical channels; subsequently attaching the second spacers to respective image sensors, wherein each of the image sensors includes a light detecting element such that the light detecting element is laterally encircled entirely by a respective one of the second spacers after the second spacers are attached to the image sensors, wherein a plane parallel to the wafer intersects both the light detecting element and the second spacers: separating the wafer so as to form single channel modules each of which includes a singulated lens system disposed over an image sensor.