Multispectral Detection and Presentation of an Object's Characteristics

A trans-illumination imaging system, for use in capturing a multispectral image of a deep internal structure of an object with reduced noise from surface reflections, to produce a high contrast-ratio image of deep internal structure using high laser power, said trans-illumination imaging system comprising;

• means to transmit a beam of light comprising two or more different wavelengths;
• means to scan said beam of light in a first direction and in a second direction, with a first maximum angle between said beam of light at a beginning and an end of said first scan direction, and with a second maximum angle between said beam of light at a beginning and an end of said second scan direction, to scan said beam of light along a plurality of optical paths in a two dimensional scan pattern upon the object;
• an array of photo detectors;
• an optical element for each said photo detector, each said optical element configured to restrict a respective field of view (FOV) of each said photo detector;
• wherein said first maximum angle of said scan pattern is configured so that said scanned light falls on a substantially small portion of the object in the first direction, and said restricted FOV of each said photo detector is not aligned with said plurality of optical paths of said scan pattern;
• and
• wherein each said restricted FOV photo detector is thereby configured to detect said scanned two or more wavelengths of light after being differentially absorbed by the internal structure and the surrounding areas, with reduced noise from surface reflections;
• each said photo detector further configured to output a signal of a contrast formed by the absorption spectrum of said two or more wavelengths by the internal structure, with said means to transmit further configured to project one or more visible wavelengths of light, and by using said output signal from said photodetectors, to selectively project said contrast onto the surface of the object.