Immervision, Inc.

Xavier Dallaire

Jocelyn Parent

Pierre Konen

Patrice Roulet

Simon Thibault

Xiaojun Du

Zhenfeng Zhuang

Ebrahim Mortazy

Pascale Nini

Valentin Bataille

Manuel Magini

Viacheslav Natashyn

Sophie Gigliotti

Kevin Miao

Marie-Pier Bellemare

Shirley Chan

Marcia Griffith

A method for designing an optical system creating at least two optical images with different field of view on a common image plane. The optical system includes at least one common optical element receiving the rays of light from the object, at least one splitting element to separate the rays of light in a primary and at least one secondary optical path, at least one reflecting element to orient the rays, at least one element forming an image in the primary path and at least one element forming an image in each secondary path. When an image sensor is located in the common image plane, at least one digital image file can be created from the optical images. Further image processing of the at least one digital image is possible in order to further improve the output from the system.

Dual field of view optical system

A method for enhancing a wide angle image to improve the perspectives and the visual appeal thereof wide-angle images uses custom adaptive dewarping. The method is based on the scene image content of recognized objects in the image, the position of these objects in the image, the depth of these objects in the scene with respect to other objects and the general context of the image.

Method for optimal body or face protection with adaptive dewarping based on context segmentation layers

A method to design miniature wide-angle and ultra-wide-angle lenses by using on-purpose distortion to have shorter focal length than usual for a given image sensor size and a desired image projection. This results in optical systems having miniaturization ratio, defined as the ratio between the total track length and the image footprint diameter, smaller than 0.8. The resulting image from these systems having on-purpose distortion can then be processed with a processor to remove the on-purpose distortion and to output an image with the targeted distortion profile.

Method to design miniature lenses with on-purpose distortion

A method for designing a wide-angle optical system having at least one freeform optical surface without rotational symmetry to create a custom 2D object-image mapping. The method is based on iteratively adjusting the at least one freeform optical 2D surface shape to have the exact 2D object-image mapping required and then adjusting the optical element surfaces to meet the other required optical specifications. The iterative method is applied until both the desired 2D object-image mapping and the other required optical specifications are reached.

Wide-angle lens with freeform surface

A method for designing an optical system for providing reliable, robust and successful realization of a distortion variation function is presented. In a preferred embodiment, the proposed distortion variation optical system includes at least two non-symmetrical elements, which are moving in the transverse direction. The proposed freeform lens contains two transmissive refractive surfaces. The freeform elements designed with this method have preferably a flat surface and a non-symmetrical freeform surface. The two plano-surfaces are preferably made to face each other, so that a miniature camera can be offered. The value of the non-symmetrical freeform surface is used to produce variable optical power when the two freeform elements undergo a relative movement in the vertical direction. Using this method, an optical system with an active distortion, smaller form factor, and better imaging quality can be obtained.

Optical system with dynamic distortion using freeform elements

An optical apparatus captures images of a wide-angle scene with a single camera having a continuous panomorph zoom distortion profile. When combined with a processing unit, the hybrid zoom system creates an output image with constant resolution while allowing continuous adjustment in the magnification and field of view of the image without interpolation like a digital zoom system or without any moving parts like an optical zoom system.

Constant resolution continuous hybrid zoom system

The present invention relate to an optical apparatus to capture images of a wide-angle scene with a single camera having a continuous panomorph zoom distortion profile. When combined with a processing unit, the hybrid zoom system creates an output image with constant resolution while allowing continuous adjustment in the magnification and field of view of the image without interpolation like a digital zoom system or without any moving parts like an optical zoom system.

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Verdun, Canada

Xavier Dallaire