Sd optics introduction

SD OPTICS
Technical Information & Strategies

Table of Contents
1.COMPANY OVERVIEW
2.TECHONLOGY OVERVIEW on VARIABLE FOCUSING LENS SYSTEM, MALS™
3.WISESCOPE based on MALSTM Type I : RDP
4.SMART DEVICE based on MALSTM Type II : DML
5.TRENDS
6.STRATEGY of BUSINESS
APPENDIX : RELEASED PRODUCTS

1.COMPANY OVERVIEW
4.SMART DEVICE based on MALS™ Type II : DML
5.TRENDS

Advanced Development BusinessGeneral Affairs
 Organization Chart
Vision Inspection Dept.
Optical Application
Dept.
Fast Vari-Focus Lens
(MALSTM) R&D Lab
CEO
Strategic Planning Office
Opto-mechanical
Team
Electronics & HW
Algorithm Team
S/W Team
WISESCOPE Team
SD OPTICS, Inc.
Production &
Quality Control Dept.
CS Team
Industrial
Application Team
Medical
Application Team

Stage
Status
USA TAIWAN PCT Nat’l Total
Filing 67 23 41 131 262
Publication 63 23 41 107 234
Allowed 4 4
Issued 52 17 17 86
Under Exam 7 4 8 19
Intellectual Properties
 SD Patent
US’s Trademarks
o Registered : MALS™, DML™, RDP™
o Pending : Stereo Display

1.COMPANY OVERVIEW
3.WISESCOPE based on MALS™ Type I : RDP
5.TRENDS

Vari-Focus Methods for Focused Imaging : Traditional
Image
Sensor
AF Block
• Liquid Lens
• Low level “Degree of Accuracy”
• Low level “Repeatability”
• Dependency on Temperature
• Dependency on Position
• Low “Uniformity of Mass Production”
• Light Field Sensor Operation
• Vari-Focus & 3D Available
• Low Level “Image Quality”
• Low Level “Degree of Accuracy”
• Piezo, VCM, or Motor Operation
• Low Level “Speed of Vari-Focus”
• Hysteresis
• Short-term Reliability
• Large Power Consumption
Liquid LensClassic Camera Light Field Camera

MALS™ Appearance & Microphotograph
CORE TECHNOLOGY --- What is MALS™ ?
MALS™ consists of thousands of Micro-mirror Array
MALS™ ? Micro-mirror Array Lens System
Ultra Fast Vari-Focus Digital Lens manufactured by using MEMS Technology

(Each small piece of mirror becomes a micro-mirrors)
Micro-mirrors
(Micro Size &
Nano Tolerance)
Conventional
Reflective Lens
(Deformable Mirror)
Principle of MALS™
MALS™
Reflective Micro-mirror Array with Curvature Arranged in Flat Plane

Image Forming Structure (Mechanical) : Next & ALIEN ?
[Biological Optics : Deep Reflections 2008]
ALIEN EYE
1. convergence condition
2. phase matching condition
ΔOPL = kλ Ray m
Ray n
Micro-mirror
array lens
Object Focus
OPLm – OPLn = k
m, n : indices of ray k : integer
 : wavelength of ligt
[Lens Conditions for MALS™]
SD OPTICS’ EYE

A Part of U.S Patent (US 6,934,072 B1)
Fig 1. MALSTM In-Plane Schematic View
(Micro Mirror Array)
Fig 2. Mechanical Degree of Freedom of Each Mirror
(2 Rotations & 1 Translation)
Fig 3. Operating Scheme

MALS™ can change its focal length!
For each focal length, MALS™ has corresponding curvature.
f1f2f3
Variable Focusing System by MALS™
MALS™

MALS™ : Ultra Fast, No hysteresis !!
MALS™
Ultra High Speed
Vari-Focusing

Advanced Focusing Systems : MALS™
Liquid Compound Eye Liquid + Compound Eye Light Field Lens
Common Request
Fast Vari Focus, Wide View, Reliability, Resistance
• Ultra High Focusing Speed up to 12000Hz
• Long Term Reliability more than 1 billion operating cycle
• Ultra Small Power Consumption less than 1mA
• Shock Resistance more than 5000G
• Operating Temperature Range: -30 ~ 100°C
• Single Camera Based 3D Camera
• Volumetrically 25% Smaller than Current Technology Based
Module
• Real-Time Multi Focusing
• Applicable to Volumetric 3D DISPLAY, Compact Auto Focus
and 3D camera module
MALS™

Classical Vari-Focal System vs MALSTM
One or more Lens
+
+
Actuator
(Voice Coil Motor,
Piezo electric,
Step Motor, etc.)
Special Driver IC
=
Image
Sensor
AF Block
=
Classic Optical System MALS™
OpticalVariFocusSystemAFSystem
Image
Sensor

Classical Optical System vs MALSTM
Classic Optical System MALS™
Zoom/OISSystemDisplaySystem
Image
Sensor
Driver IC
Image
Sensor
MALSTM
MALSTM

Classification of MALSTM Application
RDP Application DML Application
MALSTM
RDPTM
SPDTM
DMLTM
MOPUTM
• 3D Display Device (NOW)
• 3D Imaging Device (NOW)
• Space Telescope
• Vision Inspection Device (NOW)
• Microscope (NOW)
• Cell Phone Camera (Zoom/AF/OIS)
• Wearable Device Camera
• Digital Camera
• Monitoring Camera
• Digital Camcorder
• Display Device (3D/AR/VR)
• Endoscope
• 2-D Projection
• 2-D Television
• Projector of Mobile Phone & PDA
• Optical Tracking • Optical Storage
• 3D Printer/Scanner

Aspherical
(Cylindrical Symmetric)
Types of MALS™ : RDP vs DML
Freeform
MALS™ type I : RDP MALS™ type II : DML
Regenerated Profile by RDP
/2 /2
Regenerated Profile by DML
Arbitrary Position Arbitrary Lens Array
 Dependent control of micro- mirrors on the same radius
(1 Rotation, 1 Translation)
 Analog voltage Control
 Separate stand-alone controller
 Infinite number of Vari-Focal steps
 Independent control of each micro-mirror
(2 Rotations, 1 Translation)
 Digital on/off with fixed voltage
 No stand-alone controller required
 8~16 steps of Vari-Focal by design

1.COMPANY OVERVIEW
5.TRENDS
RDP™ = Real Depth Panel

3D Microscope,
 Manual / Auto Focus
 All-In-Focus
 Real-time Multi-Focusing
 Ultra Fast Vari-Focusing
 3D Imaging and Display
(using current 3D display apparatus)
 Applicable with conventional
microscope objective lens w/ C-Mount
 Applicable with current objective lenses
of various magnifications
?
MALS™ applied Vision Camera Module for 3D Inspection

3D Microscope,
• Structure of WISESCOPE (RDP Type)

3D Microscope,
• Illumination

All-In-Focus Images of
General Microscope

General Image
How to make the 3D Image of
All-in-Focus Image
o High Speed Vari-focusing
o Estimate sharpness images
o Fusion the focused images to
reconstruct All-in-Focus image

Depth Information
How to make the 3D Image of
Rendering
o Multi focus images
o Measure sharpness to estimate the focuses
o Use depth information to reconstruct as 3D Image
o Depth resolution ≤ 21.1um (depending on optics)
Depth Form Focus (DFF)

HORSE
Example : 3D Image of
COINS
SWITCH CONTACTS

 Impossible to take In-focused image
All the different height surfaces need to be examined. Due to the composite matters
such as specimen tolerance, the camera moving mechanism tolerance, camera
focusing mechanism tolerance and so on, fixed-focus camera cannot take in-focused
image
Limitations on the existing Vision Inspection Systems
Lens
DOF
Fixed-focus Lens
for inspection
camera
Focal Lens
inspection surface
DOF of WISESCOPE
WISESCOPE
Focusing Range
= 40x the depth of the objective lens
TRAY
 Absence of high speed variable-focusing technology
No technology for high speed variable-focusing camera exists for vision inspection
system which is applicable to mass production. (There have been efforts to
develop, but not developed yet)

1.COMPANY OVERVIEW
5.TRENDS
DML™ = Discretely controlled Mirror array Lens

SMART DEVICE MODULE using MALS™ : DML Type
MALS™ = Conventional Reflective Lens + Ultra High Speed Actuator
Conventional Technology MALS™
Optics
Actuator
F’
F”
Real time focus changing
F’’
Far
Vari
Focus
Near
F’
F’
Near Far
Vari Focus
Position
Change
Curvature
Change

SuperiorityAdvantage
• Multi-Function (Optics & Actuator)
• Reflection Type
Effect
Size 30% ↓
• Low Power Consumption (1mA ↓)
Power Consumption
~1/40 ↓
• Micro Scale MEMS Device
Focusing
Real Time
• Mass Production by MEMS Process
Material Cost
20~30% ↓
• New Concept Design
Fujinon Patents
Independent
• Shock Endurable Structure
Acceptable G.A.*
>5000G
Compact
Energy Saving
High Speed
Low Cost
SD Optics’ own IP
(Intellectual Property)
High Shock Resistance
* Gravitational Acceleration
MALS™ vs Conventional Optical System : DML Type

Item MALS™ (DML) Conventional Type Remarks
• Layout - Actuator + Lens
• Power Voltage
• Power Consumption
• Module Size
(~12V)
~0.1 mA ↓
10.5(W) x 8(L) x 4.5(T)
2.8V
~40 mA ↓
8.5 x 8.5 x 6.1
- Refer to * below
- Less current consumption
- For ¼ inch sensor, thickness
can be reduced dramatically,
up to 65%
• Speed
• Sound Noise
•Material Cost
~1 m sec
X
O
at least 20% less
~100 msec
< 25dBm@10mm
X
- Focusing time
- No noise
 High speed & low power consumption
 SD Optics’s own IP
MALS
Image Sensor
Lens
Actuator
Lens
Image
Sensor
* Lower voltage operation can be obtained with new design of MALS™ Structure and MEMS Process
CAMERA MODULE using MALS™ Technology : DML Type
1. Comparison

Prism
Prism: Plastic
Lens 1: Plastic
Lens 2: Plastic
Image Sensor
MALS™ (DML)
Image
Sensor
2. Typical Design of MALS™ Camera Module
COMPACT CAMERA MODULE using MALS™ : DML type
MALS
IR
Cut
Filter
Sensor
IRIS
PRISM

MALSTM
MALSTM
AMOLED mini DisplayMALS™
View
Display Module Using MALS™ : RDP Type
• MALS™ Application : Compact 3D Display, Volumetric 3D

• Conceptual Schematic of MALS™ Display Module (Functional Prototype)
Display Module Using MALS™ : RDP Type
HDMI
Distributor
AR DEMO:
https://youtu.be/XVlt5uOevyQ

Display Module using MALS™ : RDP Type
• Prototype Design Data
1) See Through Type
2) Optical Specification
- Eye Pupil : 3.5 mm
- MALS Diameter : 5 mm
- Field of View : 45 degree
• Diffraction MTF
- 0~15 degree : over 30% at 60 lp
- 15 ~22.5 degree : over 30% at 20 lp

Display Module Using MALS™
3) MALS Power & Diopter
MALS Step Object Distance Diopter
0 Infinity 0.0
10 5327.2 0.2
20 2663.6 0.4
30 1775.7 0.6
40 1331.8 0.8
50 1065.4 0.9
60 887.9 1.1
70 761.0 1.3
80 665.9 1.5
90 591.9 1.7
100 532.7 1.9
110 484.3 2.1
120 443.9 2.3
130 409.8 2.4
140 380.5 2.6
150 355.2 2.8
160 333.0 3.0
170 313.4 3.2
180 296.0 3.4
190 280.4 3.6
200 266.4 3.8
210 253.7 3.9
220 242.2 4.1
230 231.6 4.3
240 222.0 4.5
250 213.1 4.7
260 204.9 4.9
270 197.3 5.1
280 190.3 5.3
290 183.7 5.4
300 177.6 5.6
310 171.9 5.8
319 167.0 6.0
• MALS Performance
- can change object distance from infinity to 167mm
- coverage : 0 ~ 6 diopter
- MALS step : Total 320 steps (0 ~ 319 step)
 0.01875 diopter/step

Display Module using MALS™ : RDP Type
• Configuration
AR simulation system consists of
• AMOLED SONY ECX335AF-7 0.7” Displays
• MALS™ Vari-focal Units
• 4M Color Camera is attached to record AR Image
• Focusing targets positioned at 0.4m, 0.5m , 0.8m, 1.6m, and 3.0m (infinite)

1) Real image distance ≠ Display image distance
with MALSTM
Real image distance ≈ display image distance
AR Visual Cue Conflicts (problems in commercial AR)
2) Parallax issue
solved by software
(GPU is used)
3) Image blurring is not based on real image distance
with MALSTM
Real image distance ≈ display image distance
thus, image blurring is based on real image distance
H. Hua and B. Javidi, Opt. Express 22, 13484 (2014)

STRICTLY PRIVATE AND CONFIDENTIAL
Display Module using MALS™
• Issue on Accommodation & Convergence for AR/VR
Convergencedistance
Focaldistance
Display
Screen
3D DisplayReal world
Convergencedistance
Focaldistance
Vs
A 3D display requires each point in the display’s visual field to generate the accommodative
response matching its virtual depth in order to have a true sense of surface depth.
If not precisely matched, just like images viewed through binocular, human eyes may experience
an accommodation conflict, causing unstable imaging, irritating eyes, headache, and with the
absence of accommodation information, the images completely lack a sense of surface depth.

1. Focusing for Eye Sight Correction
MALS as a correction device, compensates for your
eyesight whereas the technology adjusts the images to
your naked eyes as they are.
Farthest Closest
Sight corrective area
segment
Sight Normal(0D) nearsightednes(-3D) nearsightednes(-6D)
MALS
C1=-8.4E-4
(f=595mm)
C1=0
(f=inf)
C1=8.4E-4
(f=-595mm)
Infinite -333mm -167mm
Right
Left
Camera focus (infinite)
Camera focus
167mm
Camera focus
330mm
• Functions of MALSTM

2. Focus matching for AR / VR (Accommodation, Convergence)
0.4m FOCUS 0.5m FOCUS 0.8m FOCUS 1.6m FOCUS 3.0m FOCUS
AR with
MALS™ vari-
focal unit
(Focus of
displaying
image is in
sync through
MALSTM )
AR without
vari-focal unit
(Focus of
displaying
image is fixed
at 0.4m like
other AR
system)
0.4m FOCUS 0.5m FOCUS 0.8m FOCUS 1.6m FOCUS 3.0m FOCUS
(Each Focus) Accommodation & Convergence
CLEAR CLEAR CLEAR CLEAR CLEAR
Accommodation & Convergence Conflict More and More BLURRED to far >>>>
CLEAR BLURRED BLURRED BLURRED BLURRED
Accommodation
& Convergence
BLURRED BLURRED BLURRED

Input Device : 3D Camera : 3D Mapping & Vari Focus
AMAZON Kiva & Prime-Air
TREND : 3D CAMERA, SMART GLASS , Wearable Device , VR, AR, Internet of Things, Drone
Google’s 3D Project, TANGO
Self-Driving Vehicle
GOOGLE GLASS & VIZIX
SONY SMARTEYE & EPSON MOBERIO
FACEBOOK OCULUS & SAMSUNG VR
MAGIC LEAF & Holo-Lens
• 3D Depth Sensing Camera
• Auto Focusing for Depth-wise Display
Real Image + Virtual Image or Information + Five senses recognition => Digital Six Senses
Hot Keyword = Sensing Technology (sight, hearing, touch, smell, and taste.)
“Camera” is Core Element in Visual Perception
The Vision of Our Vision

TREND : Medical Industry
Medical Industry
NEW TECHNOLOGY
• Sensor
• Intelligent Platform
• Personal Data Mining
• Smart Security
• Automation
TRADITIONAL MEDICAL
(Medical Treatment Base )
• Simens
• Phillips
• GE Health Care
• Global pharmaceutical
company
• Great Hospital
SMART HEALTHCARE (Preventive Medicine)
• Mobile Communication Company
• IT Company
• Robot Technology
• Generic Engineering
• Traditional MEDICAL  IT Convergence
Lifeshirt , Bioshirt, Smart Watch, Health Kit (APPLE), Eye Watch
GOOGLE FIT PROJECT – Smart Lens, SAMSUNG - SAMI PROJECT
Iris Recognition Artificial EyeOperation Microscope
Input Device : 3D Camera : 3D Mapping & Vari Focus
Capsule Endoscope
• 3D Depth Sensing Camera
• Auto Focusing for Depth-wise Display

TREND : Auto Vision Inspection
Human
• Gap (Time, Analysis )
• Move
• Management Up & down
Manufacture Industry
• Size
• Employment Costs
• Depth (Layer)
• Structure
• Big
• Low
• Single
• Simple
• Small (MEMS, ASIC)
• High (CHINA>VIETNAM>PHILIPHINE>COMBODIA>AFRICA(?))
• Multi
• Complex
SO?
Defect Size
Complex
Layer
Cost
ROBOT, Automation
Time is Our Side

Ultra Vari-
Focus
Lens System
3D Vision
Module
Strategy of Technology
3D Vision
Machine
3D Vision
Module
Medical
Camera &
Display
Vision Sensor
Global No.1 Digital Optic Company
MALS Development
Vision Inspection
based on 3D WISESCOPE
Application

VALUE CHAIN of MALSTM PLATFORM
Vision Inspection Machine
WISESCOPE PLATFORM
Objective Lens
F-MOUNT
C-MOUNT
CAMERA
IMAGE
SENSOR
SDOPTICS
OLYMPUS
MEIJI
MITUTOYO
VIEWORKS
BASLER
ALLIED
IMPERX
IMI
SONY
TOSHIBA
AWAIBA
Vision Inspection Camera Module
Barcode Reader
Camera for Drone
Medical Camera
3D Microscope
MALSTM DEVICE PLATFORM
CUSTOMER
CUSTOMER
CUSTOMER
CUSTOMER
AR DISPLAY
SMART GLASS
3D PRINTINGCUSTOMER
CUSTOMER
CUSTOMER
CUSTOMER
MOBILE CAMERA
Mobile Phone
CCTV, Black Box Camera
3D DISPLAY
WISECAM PLATFORM
Interface

Technology Road Map
Machine Vision Inspection
3D DISPLAY
MALS
2012 2013 2014 2015 2016
MEDICAL
2017
COG
CAMERA MODULE
Display (Touch, Glass)
FPCB
Disposable Endoscope
for Spinal Stenosis
Endoscope based on MALS
HMD TYPE
WAFER
Alignment Camera Automatic Driving Camera
CCTV , Drone3D Camera,
Wearable & Mobile Camera
HMD 3D DISPLAY PROTYPE
3D DISPLAY Device
PLATFORM
2018
CAMERA

Business Development Road Map
SHORT TERM
Now ~ 2 Years
MEDIUM TERM
3~5 Years
LONG TERM
5~20 Years
INDUSTRY
VISION
INSPECTION
CAMERA
MALS Device
DEVELOPMENT EQUIPMENTS
VISION MODULE
MASS PRODUCTION EQUIPMENTS
INDUSTRY CAMERA
LIGHT SOURCE
MASS PRODUCTION
DEVELOPMENT
MODULE
MASS PRODUCTION
DEVELOPMENT
MODULE
DISPLAY
DEVICE
IN
HOUSE
JV
SC
M&A
IN
HOUSE
JV
SC
M&A
* JV = Joint Venture, SC = Subsidiary, M&A = Merger and Acquisition

Ex) Wearable Depth Scanning & OCR Scanning Camera
Very Important Essential Functions :
• Focusing Speed
• Long Term Reliability (Conventional Type : VCM 100,000 cycles)
• Power Consumption (Smaller Battery )
• Operating Temperature
• Environmental Stability
• Price
Replace all !!

Powerful Next Module
• Wearable AF Camera
in associated with
compactness,
energy efficiency,
reliability,
multi or all-in-focus,
etc.
• Reliable Depth-wise
Display Unit
Ultra High Focusing Speed up to
12000Hz
Long Term Reliability more than
1 billion operating cycle
Ultra Small Power
Consumption less than
1mA
Shock Resistance more than
5000G
Operating Temperature Range:
-30 ~ 100°C
Single Camera Based 3D Camera
Volumetrically 25% Smaller
than Current Technology Based
Module
Real-Time Multi Focusing
The only reliable vari-focal Lens
Next Generation
TechnologyMALS™

Business Model
Interface InterfaceInterface
WISESCOPE PLATFORM
MALSTM DEVICE
WISECAM PLATFORM
Vision Inspection Camera Module
Alignment Camera
Barcode Camera for Logistics
Compact Industrial Camera
Compact Alignment Camera
Compact 3D Depth Scanning Camera
1st
Step
2nd
Step
Next
Step
Wearable Scanning Camera
Wearable Display Module
Business by role
Business by product

1.COMPANY OVERVIEW
5.TRENDS
APPENDIX : CURRENT PRODUCTS Line-Up

SD OPTICS
MGN
Nextar
KIT
TI
HIMS
VCM
Inspection
Lens
Inspection
Mobile Lens Market
Lens & Ass’y
• Digital Optic
• Koren
• CNO
• Bangjoo
• Sekonix
• N2A
• Haesung
• JAESUNG
Lens Ass’y + IR
Attach & VCM
• UBIS
• Bangjoo
• Haesung
• Mir Cam
• IM
• Jahwa
• Hisonic
• Optron
Camera Module
• SEMCO
• SEC
• LGIT
• Patron
• CAMSYS
• MCNEX
• Nanos
• NAMUGA
• Cowell
• CRESIN
• HNT
Mobile
• SEC
• LG
• Apple
• ZTE
• HTC
Lens Barrel &
Ass’y Inspection
Sensor
Inspection
SD OPTICS
SD OPTICS
SD OPTICS
WMC-Series Target Market

WMC-Series Summary (related to lens inspection)
WMC-Series (Mobile Lens Inspection Total Solution Provider)
Product Insepction Field Result Defect Type Defect Size
L
Series
• Lens Inspection
L1 ~ L6 each Lens
Repeatability > 95%
Overkill < 4%
Underkill < 1%
Takt Time 0.8 ~ 1.0 sec
Particle, particle cluster,
contamination(incl. waterborne),
stain, dig, gas, scratch, white dot,
black dot, bubble, coating defect,
milky way, flow mark, etc.
> 10 um
A
Series
• Lens Ass’y
Inspection
L1~ L6 all lenses
Barrel/ASSEY
surface/missing
IRIS
Repeatability > 95%
Overkill < 5%
Underkill < 1%
Particle, bubble, black dot,
scratch, coating defect, milky
way, stain, gas, flow mark
> 10 um
Gate cutting, Burr, mixed surface
die, dent, dig, missing Iris,
epoxy bleed out, epoxy shortage,
Clamp ring, upside down iris, etc.
> 20 um
V
Series
• VCM Inspection
IR Filter Top &
Bottom (AR/IR)
Last Lens
Repeatability > 95%
Overkill < 5%
Underkill < 1%
Takt Time ≤ 1.7 ~ 2.0 sec
IR/AR & last lens inspection:
Particle, bubble, black dot,
scratch, stain, contamination, dig,
milky way, flow mark, epoxy
bleed out, etc.
AR > 10 um
IR > 15 um
Lens > 20 um
S
series
• Image Sensor
Inspection
Repeatability > 98%
Overkill < 0.5%
Underkill < 0.5%
Particle (floating, attached)
scratch, crack
epoxy contamination,
Stain, discolors, etc.
> 1 um

Issue Conventional System WMC - Series
VCA
Inspection
Field
• IR filter top & bottom sides,
last lens surface inspection
• If no Vari-Focus function,
need minimum three cameras
installation
• Using only ONE camera with AF
function driven by Vari-Focus vision
technology, one step inspection of IR
Filter top & bottom sides, last lens
surface
Interlayer
Inspection
• Different defect criteria
depending on defect locations
• Overkill or underkill
• Impossible to find various
defect locations without Vari-
Focus function
• Auto Interlayer Analysis
Defocus
• Defocusing due to mechanical
variation
• Defocus correction is
impossible due to no Vari-
Focus function
• Maintain accurate focus with Vari-
Focus function
Repeat-
ability
• Poor repeatability due to
defocusing
• Poor repeatability due to
defocusing
• Maintain accurate focus
 Excellent repeatability
Detect-
ability
• Difficulty of detecting micro
scratch & stain
• Difficulty of detecting micro
scratch & stain
• Detect micro scratch & stain using
more than 4 illuminations
depending on defect types
WMC-Series Comparison (related to lens inspection)

 Detect the defects with its depth and location data after scanning Z-axis direction using WISESCOPE
SYSTEM
 Classify the defect type to determine at what stage defects were occurred or remediable defects
 Selecting/Sorting a minimum defect size, which can be classified as “GOOD” by each defect type
Depth of
Focus in each
Focal
Lens Assembly
Focal Plane
Scanning
&
Image
Capturing
All-In-Focus Image Depth Map
WMC-Series Lens Inspection Method

WMC-Series Characteristics & Necessity (Lens Inspection)
• Production increase using auto inspection
• Minimize overkill using optimized algorithm
• Save post-processing cost by controlling
underkill
Inspection
Method
• Non-automated microscope
• Worker’s visual inspection
• Focus controlled manually by workers
• Different result by workers
• No automated vari-focus technology
• Workers’ condition causes inaccuracy and
poor repeatability
 High overkill and underkill
• 3 shifts/day causes labor cost increase
• Poor productivity due to many overkill
• Underkill causes post-processing cost increase
• Impossible to set and maintain a clear inspection
criteria
• Limit of inspection result documentation
• Insufficient experienced worker
• High turnover due to difficult work condition
• Vari-Focus vision basis
• Automation algorithm
• Automated interlayer analysis
• Result of interlayer analysis
• Excellent repeatability due to automation
• Different defect criteria by inspection field
• Detection of micron defect such as stain, etc.
• Inspection standardization
• One step inspection and defect analysis
• Inspection result database
• Production control by defect type
• Several machines control per person
Conventional Inspection WMC - Series
Interlayer
Analysis
Inspection
Result
Productivity
Difference

WMC-Series Economical Efficiency (Lens Inspection)
Lens Inspection Lens Assy Inspection VCM Inspection Image Sensor
Inspection
Takt Time (Sec)
UPH
0.8 ~ 1.0 sec
4,000 / 1Hour
1.5 ~ 1.8 sec
2,250 / 1Hour
1.7 ~ 2.0 sec
1,800 / 1Hour
1.5 ~ 1.8 sec
2,400 / 1Hour
WMC-Series
Result (%)
Overkill 4%
Underkill 1%
Overkill 5%
Underkill 1%
Overkill 5%
Underkill 1%
Overkill 0.5%
Underkill 0.5%
Manual
Inspection Cost
1 day 24 hrs 4.83
worker
Annual Cost
1 day 24 hrs 9.66
workers
Annual Cost
1 day 24 hrs 9.66
workers
Annual Cost
1 day 24 hrs 9.66
workers
Annual Cost
Generally
Manual
Inspection
Result (%)
Overkill 10%
Underkill 5%
Overkill 10%
Underkill 5%
Overkill 10%
Underkill 5%
Overkill 3%
Underkill 3%
WMC-Series Overkill deviation cost saving effect
Under-kill deviation cost saving effect
Disposal cost saving effect due to under-kill

Lens Auto Inspection Specification
Item Description Remark
Product WMC-L1000A
Weight 1.2t
Defect Type
particle, particle cluster,
smudge, dig, white dot,
black dot, gas,
contamination(incl.
waterborne), bubble,
milky way, coating
defect, flow mark
> 10 um
System
Spec.
Detectability*
Underkill < 1%
Overkill < 4%
Repeatability > 95%
Based on general
product inspection
Takt Time ≤ 0.8 ~ 1.0 sec
Leadtime 8 weeks After P.O.
* Exceptions of detectability
 Lower repeatability due to lot defect, defect size ±2um change, or floating particle
 Grey level difference < 30GV
 Placing error in tray

Lens Ass’y Auto Inspection System Specifications
Product WMC-A1000A
Weight 1.5t
Defect Type
Lens: particle, bubble,
black dot, scratch,
coating defect, milky
way, stain, gas, flow
mark, etc.
> 10 um
Barrel: gate cutting,
burr, epoxy bleed out,
epoxy shortage, mixed
surface die, missed Iris,
clamp ring upside down
Iris, dent, dig, etc.
> 20 um
System
Spec.
Detectability*
Underkill < 1%
Overkill < 5%
Repeatability > 95%
Based on general
product
inspection
Barrel Inspection System
Exclusive lens barrel inspection system is
available based on lens ass’y system
platform ???
 Lower repeatability due to lot defect,
defect size ±2um change, or floating particle
 Placing Error in tray

[WMC-A1000A] Inspection Unit List
# Inspection Part Camera WiseScope Illumination Pictures Etc.
1 Barrel Top acA1600gm x 2 - 2 x 5 5x1 = 5 Incl. mixed surface
die
(bottom camera)
2 Barrel Bottom
Lens (L1~L6)
acA2040-180km
(Basler) ○
4 2x1 = 2
4x12 = 48
Incl. boding
inspection
3 Barrel Side acA1600gm x 1 - 1 1x4 = 4
4 Iris acA1600gm x 1 - 1 1x1 = 1
Total - 60
Barrel
Top
Barrel
Bottom
Lens
Barrel
Side
Iris
Inspection Flow

[WMC-A1000A] Example Pictures
UI Screen

2-1. [WMC-A1000A] Barrel Bottom Inspection – 2 Pictures
3. [WMC-A1000A] Barrel Side Inspection – 4 Pictures
1. [WMC-A1000A] Barrel Top Inspection – 5 Pictures
4. [WMC-A1000A] Missed Iris Inspection – 1 Picture
2-2. [WMC-A1000A] Lens Inspection – 48 Pictures
[WMC-A1000A] Example Pictures

Inspection Unit
Bottom
Inspection
Camera
Turn Table
Laser Distance
Sensor
Back Light
WISESCOPE
Module
(top inspection
& all lenses
inspection)
Barrel Side
Inspection
Camera
Missed IRIS
Inspection
Camera
Granite Base
1
2
3
4
3 types of pocket unit available
ex) 13M, 16M, 20M

VCM Auto Inspection System Specifications
Item Description Remarks
Product WMC-V1000A
Weight 1.7t
Detect Type
Last Lens :
particle, bubble, black
dot, scratch, coating
defect, milky way,
stain, gas, flow mark,
bond bleed out
Lens > 20 um
IR top & bottom :
particle, bubble, black
dot, scratch, coating
defect, milky way,
stain, gas, flow mark,
bond bleed out
AR > 10 um
IR > 15 um
System
Spec.
Detectability *
Underkill < 1%
Overkill < 5%
Repeatability > 95%
Based on general
product inspection

Vibration/Blow/Suction
System
LOADING
WISESCOPE
Vision
Inspection
System
UNLOADING
PICK & PLACE
AR/IR
L5
AR/IR
L5
AR/IR
L5
AR/IR
L5
AR Coated Surface
IR Coated Surface
Lens (L5)
TRAY
VCM Inspection System Flow (WMC - V Series)
VCM Auto Inspection System Concept

Mobile Camera Image Sensor Inspection System Spec.
Product WMC-S1000A
Weight
Defect Type
Particle (floating / fixed),
Epoxy contamination
Scratch / Crack
> 1 um
Stain / discolor > 1 um
System
Spec.
Detectability*
Underkill < 0.5%
Overkill < 0.5%
Repeatability > 95%
Based on general
production inspection

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