CONFIDENTIAL Coherent Machine Vision Lasers 3D Triangulation – Key Success parameters

Superior Reliability & Performance COMPANY CONFIDENTIAL P. 2 Agenda Coherent Overview 3D Triangulation Overview Properties of Structured Light Key Success Parameters Uniformity Highlight

Superior Reliability & Performance COMPANY CONFIDENTIAL P. 3 Founded in 1966 TTM Sales $788.4 Million TTM Orders $799.3 Million 2,328 Employees Sales 24% U.S. and 76% International Approximately 387 Patents, 114 Pending Provider of Photonics Solutions  Primarily Lasers for Commercial and Scientific Research Applications ____________________ Note: Photonics is the Merger of Lasers, Optics and Electronics Source: Company management as of 6/30/12 Materials Processing Microelectronics OEM Components & Instrumentation Scientific Research & Gov. Programs Revenue Mix TTM Revenue Mix TTM Europe United States R.O.W. Asia Pacific Geographic Sales Distribution TTM Geographic Sales Distribution TTM Coherent – The Photonics Company

Superior Reliability & Performance COMPANY CONFIDENTIAL P. 4 Diversified Product and Applications Core Markets FPD, API, Semi, Solar Marking, Engraving, Cutting and Welding Diagnostic & Therapeutic Medical, Defense and Display Ultrafast 12 to 411 OLED, Smartphones, Tablets High Power Materials Processing Laser Eye CareAttosecond Physics Primary Application Focus Primary Application Focus Growth vs Market Growth Opportunities Growth Opportunities Scientific Research & Government Programs OEM Components Instrumentation Materials ProcessingMicroelectronics SAM Position

Superior Reliability & Performance COMPANY CONFIDENTIAL P. 5 3D Machine Vision In today’s world of expanding 3D vision systems, the camera and laser are equal partners in the accuracy, stability and repeatability of the measurements made and used by the applications. The requirements on the laser for power, pointing and electrical stability are far above a typical illumination system requirements. Having a source which produces very high power density, very thin measurement cross sections with a uniform return that does not mask the profile of the object is critical to success in these demanding applications.

Superior Reliability & Performance COMPANY CONFIDENTIAL P. 6 Structured Light Applications Weld Seam Glue Bead Gasket seals Soldier Paste BGA Wood Primary and Secondary processing Food portioning/sorting Packaging Tire – Wall and Tread Wheel alignment Alignment guidance Bottle PCBA post assembly Rail car Rail track Road / Tunnel Rail Brakes Contour measurement Steel / Extrusion 3D Reconstruction Bin Picking Non Contact Surface Profile

Superior Reliability & Performance COMPANY CONFIDENTIAL P. 7 3D Triangulation Projecting a narrow band of light onto a three- dimensionally shaped surface produces a line of illumination that appears distorted from other perspectives than that of the projector, and can be used for an exact geometric reconstruction of the surface shape.

Superior Reliability & Performance COMPANY CONFIDENTIAL P. 8 - Which Triangulation Setup? - Which 3D Camera? - Which Line Laser? - Which Objective Lens? ? ? ? 3D Triangulation

Superior Reliability & Performance COMPANY CONFIDENTIAL P. 9 Essential Information Needed: The Basic Parameters of the Application -Object Size (Width, Height and Length) -Required Scan Accuracy in X-, Y- and Z-Dimension -Scan Speed -Type of Application -Type of Material X Y Z W L H mm/s 3D Triangulation

Superior Reliability & Performance COMPANY CONFIDENTIAL P. 10 Which Triangulation Setup? -Standard Setup -Sheet-Of-Light Plane vertical to the scan direction Y -All points of a height profile have the same Y-coordinate -dz=dx/sin(α) Sheet-Of-Light Plane X Y Z Scan direction α 3D Triangulation

Superior Reliability & Performance COMPANY CONFIDENTIAL P. 11 Example Calculation November 25, 2008

Superior Reliability & Performance COMPANY CONFIDENTIAL P. 12 Example Calculation

Superior Reliability & Performance COMPANY CONFIDENTIAL P. 13 Alternative Triangulation Setups: Reverse Geometry -Advantage: Increased height resolution dz=dx/tan(α) -Drawback: Points of a height profile have different Y-coordinate -Suitable For Plane Objects Scan direction X Y Z Sheet-Of-Light Plane Scan direction α 3D Triangulation

Superior Reliability & Performance COMPANY CONFIDENTIAL P. 14 Alternative Triangulation Setups: Specular Geometry -Advantage: Highly increased height resolution dz=dx*cos(β)/sin(α+β) -Advantage/Drawback: Increased image intensity due to direct reflexion -Drawback: Points of a height profile have different Y-coordinate -Suitable For Plane Objects Scan direction Sheet-Of-Light Plane X Y Z Scan direction αβ 3D Triangulation

Superior Reliability & Performance COMPANY CONFIDENTIAL P. 15 -Advantage: Reduction of direct light reflexions -Drawback: Reduced height resolution dz=dx*cos(β)/sin(α-β) Scan direction Sheet-Of-Light Plane X Y Z Alternative Triangulation Setups: Look-Away Geometry Scan direction α β 3D Triangulation

Superior Reliability & Performance COMPANY CONFIDENTIAL P. 16 Triangulation Angle α Occlusion: Edge Height * tan(α) Triangulation Angle The bigger the triangulation angle: -the higher the Z-Resolution -the bigger the occlusion 3D Triangulation Example: 5mm tall object α = 40 degrees Occlusion (Ω) is 4.2mm Ω

Superior Reliability & Performance COMPANY CONFIDENTIAL P. 17 Z-Range FOV (nominal) FOV & Z-Range Trapezoidal shape is due to lens view angle 3D Triangulation

Superior Reliability & Performance COMPANY CONFIDENTIAL P. 18 Key Success Parameters Uniformity Poor uniformity in the reflected wave front can results in reduced accuracy and limitation on measurement resolution Pointing Stability Temperature dependent pointing effects the accuracy of the calibration and system accuracy Straightness A curved or bowed line limits the measurement window of the item being measured Bore-sight Poor Bore sight increases the installation time and risk of system mis-alignment Power Stability Directly effects the measurement sensitivity for any thresholding or low contrast measurements

Superior Reliability & Performance COMPANY CONFIDENTIAL P. 19 Properties of Structured Light Uniformity Straightness Line Width Depth of Field Divergence Field dependent focus (“Bowtie”)

Superior Reliability & Performance COMPANY CONFIDENTIAL P. 20 Properties of Structured Light 80% Clip Point RI floor I Min I Max I Avg UniformityStraightness

Superior Reliability & Performance COMPANY CONFIDENTIAL P. 21 Properties of Structured Light WD D WD = working distance M 2 = M squared of diode D = Diameter of beam on collimator Beam SizeDepth of Field

Superior Reliability & Performance COMPANY CONFIDENTIAL P. 22 Properties of Structured Light θ WD WD θ DivergenceField dependent focus

Superior Reliability & Performance COMPANY CONFIDENTIAL P. 23 Uniformity Highlight Side by side comparison of competitors line and StingRay line A – 50mW 660nm (Competitor) B – 35mW 660nm (StingRay) Uniformity variations can be interpreted as features by the software Poor management of power density in the line, effect is need for more power to get the same SNR = Higher cost, Higher Safety classification A B B

Superior Reliability & Performance COMPANY CONFIDENTIAL P. 24 Uniformity Highlight Line A PlotLine B Plot A