Tel Aviv University

Other

Holo or Ltd.

Ophthalmic Imaging Systems

Michael Golub

Menachem Nathan

Amir Averbuch

Valery Zheludev

Roman Malinsky

Israel Grossinger

Emanuel Marom

Naim Konforti

Asaf Kagan

Benjamin Milgrom

Noam Allon

Moshe Bril

Omri Barlev

Devices and methods for 3D sensing are provided. The device comprising an optical device configured and operable to produce at least one structured light pattern, the optical device comprising a light source unit configured and operable to generate one or more light beams along predetermined one or more optical paths, and a diffractive optical unit accommodated in said one or more optical paths, at the output of said light source unit such that the diffractive optical unit faces the light source unit, the diffractive optical unit being non-periodic and two-dimensional and comprising at least one resonance-domain diffractive optical element configured to create 2D spatially variable pattern in a predetermined operative wavelength range, the diffractive optical unit being thereby configured and operable as a beam shaper for said one or more light beams to thereby create said at least one structured light pattern.

Structured light projector

Apparatus and method for obtaining a plurality of spectral images of a source object in a snapshot using comprising two-dimensional compressed sensing data cube reconstruction (2D CS-SCR) applied to a dispersed-diffused snapshot image. In some embodiments, the snapshot image is obtained through a RIP diffuser. In some embodiments, a randomizer is used to further randomized the dispersed-diffused snapshot image. The 2D CS-SCR includes applying a 2D framelet transform separately to arrays representing different wavebands of spectral cube data derived from the snapshot image. The application of the 2D framelet transform separately to the arrays representing the different wavebands includes application of direct and inverse 2D framelet transforms to the arrays. In some embodiments, the direct and inverse framelet transforms are included in a split Bregman iteration.

Apparatus and method for snapshot spectral imaging

Snapshot spectral imagers comprise an imaging lens, a dispersed image sensor and a restricted isometry property (RIP) diffuser inserted in the optical path between the source image and the image sensor. The imagers are used to obtain a plurality of spectral images of the source object in different spectral bands in a single shot. In some embodiments, the RIP diffuser is one dimensional. An optional disperser may be added in the optical path, to provide further dispersion at the image sensor. In some embodiments, all imager components except the RIP diffuser may be part of a digital camera, with the RIP diffuser added externally. In some embodiments, the RIP diffuser may be included internally in a digital camera.

Snapshot spectral imaging based on digital cameras

Monochromatic cameras and methods for using such cameras to obtain a still or video color image of an object or scene. The image sensor of such cameras is clear, without a color filter array. A diffused-dispersed and optionally randomized image of the object or scene obtained at the image sensor is processed directly into a number R&#x3c;K of spectral images in R wavebands. K&#x2212;R spectral images are interpolated from the R spectral images. A color image is then reconstructed using the directly processed R spectral images and the K&#x2212;R interpolated spectral images. The interpolated images may exemplarily be obtained using a spline subdivision algorithm.

Color imaging using a monochromatic digital camera

A method of extracting data from an identifiable monochromatic pattern. The method comprises separating a polychromatic optical signal, received from an object having identifiable monochromatic pattern, into a plurality of wavelength components, separately capturing each of the wavelength components, reconstructing a plurality of images each from a different wavelength component, detecting the identifiable monochromatic pattern in one or more of the images, and extracting data associated with or encoded by the detected identifiable monochromatic pattern. The images have different depths of field.

Devices and methods of reading monochromatic patterns

A system and method are presented for use in imaging the patient's retina. A light source unit is provided including a light emitting diode (LED) arrangement comprising multiple LEDs of different wavelength ranges. A light guide arrangement is used with the LEDs arrangement and is configured for coupling light from the LEDs and providing output light beams of a desired shape. The illuminating light is directed towards a region on the retina, and light returned from the illuminated region is collected and directed to an image detector unit. The invention enables the use of LED light at high intensity as required in the eye retina imaging, while maintaining the required high-quality imaging. Also, the invention provides for simultaneous or quasi-simultaneous as well as high-speed imaging in FA and ICG imaging procedures, thereby satisfying a long felt need in ophthalmology. Also, the invention provides for automated illumination or light exposure control to optimize overall light exposure to the patient eye and best acquired image quality in terms of brightness, contrast and image signal-to-noise ratio.

Integrated retinal imager and method

Digital cameras for spectrally imaging an object or scene comprise an imaging component, a fixed one-dimensional disperser and an image sensor having sensor pixels, the disperser and image sensor arranged with matching optical parameters and in a predetermined spatial relationship. Each sensor pixel detects multiplexed spectral information from at least two adjacent object points and the spectral information detected by each sensor pixel is demultiplexed and processed into spectral-spatial data to provide spectral images.

Snapshot spectral imaging systems and methods

A simultaneous multifocal contact lens for correcting vision acuity of an individual is disclosed. The contact lens comprises a central region radially surrounded by at least one far vision focal region and at least one near vision focal region, wherein a near vision additional correction of the at least one near vision focal region is overcorrected by at least 10% with respect to the near vision additional correction prescribed for the

Simultaneous multifocal contact lens and method of utilizing same for treating visual disorders

A progressive multifocal lens for eyeglasses formed along a principle meridian curve, with a farsighted vision zone (,) having an optical power corresponding to that required for viewing distant objects, a nearsighted vision zone (,) having an optical power corresponding to that required for viewing near objects, and an intermediate vision zone (,) between and progressively connecting the farsighted vision zone and the nearsighted vision zone, includes a transparent, non-rotationally-symmetrical, microrelief structure in one or more of these vision zones.

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Rehovot, Israel

Michael Golub