Abstract: A diffractive optical element (DOE) is designed to implement both a collimation function with respect to an input divergent beam and a beam shaping function with respect to an output divergent beam. The phase designs of the collimation function and the beam shaping function are independently produced in the phase domain. These phase designs are then combined using a phase angle addition of the individual functions and wrapped between 0 and 2? radians. The diffractive surface of the DOE is then defined from the wrapped phase angle addition of the individual functions.

Abstract: A method is provided for navigation of a mobile device. Spatial information of at least one beacon detected in an image relative to the image is determined. The image includes an image of the at least one beacon within at least part of an environment surrounding the mobile device. A position of the mobile device based on said spatial information is determined using encoded visual information of the at least one beacon.

Abstract: A lighting identification chart has a grey patch lighting identification feature and a three-part fiduciary marker positioned around the grey patch. The lighting identification chart 102 can be a small 18% reflectance ‘grey card’ produced with a fiduciary marker pattern on its surface. An imaging algorithm determines the orientation of the card with respect to the camera and locates the area of the grey patch. During image capture, the subject presents the card within the frame. The camera recognizes the locating features and calculates a white balance based on the grey patch on the card.

Abstract: Ambient light is detected by a photodiode circuit by measuring the time taken for a digital output of the photodiode circuit to change state in response to exposure of a photodiode of the photodiode circuit to that ambient light. A nominal time for state change is calculated based on photodiode circuit characteristics. Furthermore, an effective time for the photodiode circuit digital output to change state is determined in a calibration mode where the photodiode has been disconnected and a reference current is applied to the circuit. An illumination value of the detected ambient light is then calculated as a function of: the measured time, the effective time and the nominal time.

Abstract: An image sensor power distribution arrangement includes a sensing portion having a first contact at a first edge thereof and a second contact at a second edge thereof, and a control portion. A first power supply supplies power to the sensing portion via the first contact. A second power supply supplies power to the sensing portion via the second contact, and to the control portion.

Abstract: An image stabilization apparatus includes accelerometers, a proximity sensor and a processor. Each accelerometer determines acceleration along an axis of a plane parallel to a focal plane of an image capture device. The accelerometers output respective acceleration data to the processor. The proximity sensor obtains a measurement of the distance between the focal plane of the image capture device and an object plane. The proximity sensor outputs distance data to the processor. The processor processes the distance data and the acceleration data to produce correction data to correct image data captured during motion of the image capture device.