Patent ID: 9048951
Filing Date: 2015-06-02
Classification: H04B

Abstract:
1. An optical detection apparatus comprising, (i) an electrically passive rigid substrate, (ii) a plurality of photodiodes attached to a surface of said rigid substrate, (iii) a focusing lens that focuses an incoming light beam about a single optical axis onto entire said plurality of photodiodes, (iv) a plurality of low capacitance high speed optical detection cells, each cell comprising a transimpedance amplifier attached to said rigid substrate and placed in close proximity to a paired photodiode, selected from said plurality of photodiodes, and electrically connected to said paired photodiode by means of an electrical connection that does not add significant capacitance to the cell, and wherein each transimpedance amplifier of each optical detection cell includes a plus and a minus output and wherein all plus outputs of all transimpedance amplifiers are connected together into a combined plus output and all minus outputs of all transimpedance amplifiers are connected together into a combined minus output, (v) amplification means for amplifying said combined plus and minus outputs.