Application of LADAR in the Analysis of Aggregate Characteristics (2012)

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73 The FTI system consists of the image collection system and MATLAB software package. Figure B-1 illustrates the FTI sys- tem setup with components. 1. Image Collection System • Fringe source—provides two types of laser, with wave- lengths of 675 nm and 805 nm – 675-nm SLD, 805-nm LD, and a fiber switch – Double pinhole mask • Camera setup—capture visual image and two other images under the laser in the mirror – CCD camera, bellows, macro lens assembly • Aggregate position system—place aggregate(s) on the height-adjustable platform – Particle tray and a 45°-angled mirror 2. MATLAB Software Package • Main program—process images acquired using FTI system to output 3-D coordinates • Error correction program—window out error areas in the 3-D coordinates from the main program • Morphology analysis program—quantify morphological characteristic of images aggregates A p p e n d i x B The FTI System Components 805 nm LD Fiber switch 675 nm SLD Fringe source Double pinhole maskAngled mirror Particle tray CCD camera Bellows Macro lens assembly Computer Matlab software SLD = Superluminescent Diode, LD = Laser Diode Figure B-1. Illustration of FTI image system setup.

74 3. Fourier Transform Interferometric Imaging System Equipment List Item (Category and Detail) Vendor Price Purchase Date Install Date Camera and Lens System $5,876.95 CCD Camera Astrovid $2,985.00 10/18/2006 12/20/2006 Track Mount System Thorlabs $291.00 10/30/2006 12/20/2006 Macro Lens & Filter Schneider Optics $1,367.00 10/18/2006 2/28/2007 Bellows & Adapters B&H Photo $733.95 10/30/2006 2/28/2007 Add’l Misc Camera Items Thorlabs $500.00 – – Image Acquisition System $3,800.00 Computer Dell $2,800.00 3/5/2007 3/20/2007 Software GeoMagic $1,000.00 – – Fringe Generator System $6,867.17 1st Gen. Coupling Lens Assy. Newport $502.00 10/18/2006 12/20/2006 Test Coupler & Laser Diodes Thorlabs $367.60 10/30/2006 12/20/2006 Mounting Hardware Thorlabs $312.57 10/30/2006 12/20/2006 Custom Dual-Wavelength Coupler Gould Fi ber Optics $424.00 1/17/2007 in progress HeNe Laser Edmund Optics $1,370.00 – – 2nd Gen. Coupling Lens Assy. Newport $1,423.00 – – Temp. Shifted Polishing Jig Thorlabs $200.00 – – Whitelight Interferometer Thorlabs $200.00 – – Fiber Optic Switch Thorlabs $1,068.00 – – Add’l Laser Diodes & Misc Hardware Thorlabs $1,000.00 – – Particle Positioning System $3,039.56 1st Generation Mount Thorlabs $164.16 10/30/2006 12/20/2006 Particle Gluing Station Thorlabs $131.13 10/30/2006 12/20/2006 System Enclosure Misc $193.71 2/6/2007 2/28/2007 2nd Generation Mount Thorlabs $248.56 2/21/2007 4/30/2006 System Base – Optical Breadboard Thorlabs $938.00 – – Angled-Mirror System Edmund Optics $364.00 – – Additional Hardware Misc $1,000.00 – – Total Price: " $19,583.68 " "