MICROGONIOPHOTOMETER By Sadaf Mackertich Jeffrey Herbert Peter Bowlin

MICROGONIOPHOTOMETER By: Sadaf Mackertich Jeffrey Herbert Peter Bowlin Lemuel Lebron

What is a Microgoniophotometer? � � In layman's terms it is an instrument that measures gloss. By reflecting a light source off of a glossy object twice, second time through a polarizing lens, it is possible to measure the intensity of the light.

Project History � � � Gloss is used as a criterion in industries to evaluate the quality of a product Human evaluation = subjective w/ many sources of error Solution-- automated device to remove human element and provide results that are: � Objective � Accurate � Consistent

Project History Con’t � RIT Imaging Science Dept. had experimental technology to obtain quantitative measurements of gloss � Cumbersome; not user-friendly � � � Needed a way to commercialize the process In April 2008, a senior design team started a prototype that was user-friendly, robust, compact, automated, and reliable Device was half-completed… we picked up where they left off

• • • Outline Functional Decomposition Measurement Process Customer Needs Specifications House of Quality Pareto Chart Morphological Analysis Assignment of Tasks Concepts Pugh Chart (Concept Selection Screening) Risks Gantt Chart

Functional Decomposition

Measurement Process

Automation of Measurement Process

Customer Needs

Specifications

House of Quality

ea s Engineering Specifications M ys s m te is ys al An en t. S re m em s An si s R en t n tio lu r t os Er ro C ng de r iri w ho l es o re m d pl e ng ou si H se po su al y de ur e ra t ue l. V al xe ) ha lp (a e Va lu ur ve n) at io C m pe m sa ex ea M o N ng ci la fr ep si ut O ns Pi Te to e at St rts Pa ea dy in g to os ov M C o N St d at e re l ra l F om R eg tio si Po BD nt t. I pu e gl An or C of ty si ty rie O ut ut pu t O (a ut em en ts ur ea s M ut np li an ua e et pl om C m to y on l en nt st Sy ea su M en t m ur e is e m Va t. I gh Li e pl Sa m Ti Relative Importance Pareto Chart 12 10 8 6 4 2 0

Solutions Sub Functions 1 2 3 4 PVC rod stock with holder Aluminum rod turned and Automating Two rollers used to feed attached to motor and Utilize printer roller system bolted to housing sample Holder the paper around one roller track to hold sample motor and track against the pvc Rotating wheel by servo Automating motor. The wheel would Light have 3 LED or color lenses Fixture/RGB to shoot light into cable Use mirrors in a tunnel Place rectangular led bank towards the fiber optic onto a track and move with cable to funnel the light motor and gear to change from any LED without light color movement Rotating LED wheel 3 Clamp two semicircular Servo motor without Bore gear and attach aluminum rings onto f-stop Automating FUse easily available hose micropositioner, located around the camera and control and with attached Stop, Zoom clamp and worm screw to next to the camera on the place a servo motor next to and Focus bar with track attached to act as gear and worm gear mount it with a worm gear and motor assembly 4 Step motor connected to Lens flip upwards towards Pneumatic pressure cylinder Automating track on bottom of housing Attach track and gear on camera using a step or mounted in line with rod connecting to Polarizing Lens current system servo current system polarizing lens rod 5 Light Bar Polarizing lens holder Windowed slit for easy replacement Simple hanger holder 6 Software Integration Java Plugin with Image. J Libraries Labview document 7 Housing for Keep it in a metal box with Devise a flip-up lid 8 Output Display A separate workstation Bolt small piece of steel Rectangular aluminum alongside light bar track and stock with slit cut in top attach using magnets Use plastic as a lighter material Use previous housing Print out from computer Mounted screen

Assignment of Tasks Sub Function Number Sub Function Assigned Group Member 1 Automating sample Holder Jeff 2 Automating Light Fixture/RGB Sadaf 3 Automating F-Stop, Zoom and Focus Jeff/Sadaf 4 Automating Polarizing Lens Pete 5 Light Bar Polarizing lens holder Pete 6 Software Integration Lem

Sample Holder Concept

Selection Screening Automating Sample Holder Screening Selection Criteria Ease of sample load Cost Durability Ease of setting adjustments Repairability Reliability Sum + 's Sum 0's Sum -'s Net Score Rank Continue? P 11541 Microgoniophotometer Concepts A B C D Reference Aluminum Rod with sample holder and gear 2 roller design track Printer roller old design 0 + + + + + 0 2. 00 4. 00 2. 00 1. 00 3 1 3 -1 3 -1 0 2 1 2 no yes no no

Red Green Blue Light Holder Concept 1

Red Green Blue Light Holder Concept 2

Selection Screening Light Fixture Screening Selection P 11541 Microgoniophotometer Concepts A B C Selection Criteria Rotating Wheel Cost - - + Durability 0 0 + Ease of setting adjustments + + + Repairability 0 0 + Reliability 0 0 + Complexity - - + Automation Enabled + + + Sum + 's 2. 00 7. 00 Sum 0's 3. 00 0. 00 Sum -'s 2 2 0 Net Score 0 0 0 Rank 2 2 1 Continue? no no yes Rectangular w/ mirror enclosed Track D Reference old design

Camera zoom, focus and f-stop control concepts

Camera zoom, focus and f-stop control concepts

Selection Screening F-Stop and Zoom Screening Selection Criteria Cost Durability Ease of setting adjustments Repairability Reliability Complexity Sum + 's Sum 0's Sum -'s Net Score Rank Continue? P 11541 Microgoniophotometer Concepts A Pinned Rod connection + 0 B Gear mounted on camera 0 0 0 1. 00 0. 00 1. 00 0 + 1. 00 0. 00 1. 00 0 3 no C Reference D 0 0 0. 00 0 0 0 + + 4. 00 0. 00 1 3 hose clamp and worm Gears behind camera gear 0 + 2 yes 4 no 1 No – inaccurate

Polarizer with Pneumatic Actuator Concept

Polarizer with Gear/Track Concept

Selection Screening Automating Polarizing Lens Screening Selection P 11541 Microgoniophotometer Concepts A B C Ref Lens flip up towards Attach track to bottom of housing Selection Criteria camera Actuator and use a rod Cost 0 0 Durability + 0 Ease of setting adjustments 0 + 0 Repairability + 0 Reliability + 0 Complexity + 0 Sum + 's 2. 00 3. 00 0. 00 Sum 0's 2. 00 0. 00 Sum -'s 2 3 0 Net Score 0 0 0 Rank 2 1 1 Continue? no yes

Polarizing Sheet Holder Concept

Selection Screening Lightbar Polarizing Lens Holder Screening Selection P 11541 Microgoniophotometer Concepts A B C D Ref Magnetic Simple Hanger Tape Clamp and bolt Selection Criteria Attachment Holder Cost 0 0 Durability + + 0 + Ease of installation 0 0 Repairability + 0 Reliability + + 0 + Complexity 0 0 Sum + 's 3. 00 2. 00 0. 00 2. 00 Sum 0's 3. 00 0. 00 Sum -'s 0 4 Net Score 3 -2 0 -2 Rank 1 2 3 2 Continue? yes no no no

Selection Screening for Software Concepts A Java Plugin in Image. J Selection Criteria Ease of use + Ease of Software Integration Library Availibility + Execution Speed 0 Memory Overhead Ease of GUI creation + Portability + Language Ramp-up Time Sum + 's 4. 00 Sum 0's 1. 00 Sum -'s 3 Net Score Rank 1 Continue? Yes B C Image. J and Perl Script with C++ Math. CAD w/ C++ microcontroller u. Controller Reference + x x x 0 x x 2. 00 x 4 x 1 -2 0 3 2 No No

Likelihood Severity Importance Risks Action to Minimize Risk 2 2 4 Double and triple check measurements and specifications Jeff, Sadaf, Pete 3 2 6 Meet with software professionals Lemuel 1 2 2 Check orders before submission Sadaf, Pete Flawed design 1 2 2 Test on thinner paper and create a factor of safety Jeff Cannot acquire a proper measurement Flawed design 2 1 2 Check prototype and modify as necessary Jeff Sample loader changes parameters Cannot acquire data Flawed design 2 1 2 Make sample loader adjustable, benchmark design and relate to software Jeff, Sadaf 7 Imprecise Motors Introduce large errors Incorrect choice of motors 1 2 2 Check motor precision before purchase Pete, Sadaf 8 Motors break camera Project will be set back until new camera is purchased Incorrect choice of motors 1 3 3 Check motor power before purchase Sadaf, Jeff, Pete 9 Damage to Circuitry Cannot operate device 1 3 3 Create cover for circuitry Lemuel 10 LED’s burn out Limits test spectrum range Improper program of circuitry or water damage Overuse 1 1 1 Create easy to change LED holders 11 Fiber Optic bar breaks Cannot test samples Improper installation 1 3 3 Purchase a new light bar 12 Camera optics break Project cannot continue Improper installation 1 3 3 Purchase a new camera with known FStop Lemuel Jeff, Sadaf, Lemuel, Pete 13 Fail to machine parts correctly Fail to automate machine Incorrect measurements 2 2 4 Purchase cheap, replaceable parts Jeff, Sadaf, Pete ID Risk Item Effect 1 Interference with motors and housing Fail to automate device 2 Fail to incorporate all software aspects Cannot deliver one simple to use executable file 3 Parts fail to meet criteria Fail to automate device 4 Sample loader destroys samples Function of the device is lost 5 Sample holder fails to keep sample tight to cylinder surface 6 Cause Imprecise measurements Extremely difficult to program within time frame Incorrect part was ordered or delivered Owner

Gantt Chart