Optoelectronic substrate and light source and method of manufacturing thereof

A light source comprising at least two micro-LED subpixels whose peak wavelengths differ by at least 30 nm from each other and are configured for use in Optical Coherence Tomography, holographic displays, endoscopy, ophthalmology, and/or other biomedical imaging and diagnosis tools to discern body tissue morphology, cell structures, blood cell existence, and/or vascular dynamics within blood vessels and/or structures within the retina or other human organs and tissues.

A micro-LED device comprising an optical imaging device that includes multiple LED subpixels that are laterally, vertically, or any combination thereof arranged and monolithically fabricated on a substantially common plane on a structure without requiring pick-and-place or mechanical transfer of the subpixels as light sources, wherein the micro-LED subpixels are configured to emit in multiple emission spectra and illuminate a target object and to generate a multi-wavelength image of the target object.

An Optical Coherence Tomography equipment or device, wherein intravascular OCT and endoscopic applications requiring the use of two or more light bands via an optical fiber to transmit light to the tissue through portable, insertable, or maneuverable forms and collect backscattered signals by insertion into coronary arteries and other intestines or ducts to detect inflammation or early cancers. These adaptations enable high-resolution “optical biopsy” but would require higher electroluminescence and efficient emission of visible light and low loss in optical interconnect.

A light source comprising at least two micro-LED subpixels whose peak wavelengths differ by at least 30 nm from each other having waveforms with a full-width at half-maximum (FWHM) of at least 10 nm and are utilized as a light source in a biomedical imaging device to discern at least one of body tissue morphology, cell structures, blood cell existence, vascular dynamics within blood vessels, structures within the retina or tissues within other human organs.

A light source for visible-light optical coherence tomography (vis-OCT), comprising:

• a monolithic micro-LED array comprising a plurality of InGaN-based micro-LED pixels, each pixel having a lateral dimension of less than 100 μm;
• wherein the micro-LED array is configured to emit light across a broadband visible spectrum including at least blue, green, and red wavelength bands, the emitted light having a low temporal coherence length suitable for achieving axial resolution of 2 μm or less in tissue and high spatial coherence for enhanced image sharpness with reduced speckle noise.

An Optical Coherence Tomography (OCT) illumination system, comprising:

• a micro-LED array light source including a plurality of InGaN-based micro-LED pixels fabricated on a common substrate;
• drive circuitry coupled to the micro-LED array to selectively activate subsets of pixels for structured illumination;
• wherein the light source provides broadband emission with an effective coherence length configured to support sub-2 μm axial resolution in vis-OCT while minimizing speckle artifacts without requiring phase-randomization averaging techniques.