sd optics introduction

SD OPTICS Technical Information & Strategies

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MOUNT THE ARTIFICIAL EYE!!!

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

Advanced Development Business General 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 2.TECHONLOGY OVERVIEW on VARIABLE FOCUSING LENS SYSTEM, MALS™ 3.WISESCOPE based on MALS™ Type I : RDP 4.SMART DEVICE based on MALS™ Type II : DML 5.TRENDS 6.STRATEGY of BUSINESS APPENDIX : RELEASED PRODUCTS

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 Lens Classic 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.

f1 f2 f3

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™

Optical Vari F

ocus S

yste

m

AF S

yste

m

Image Sensor

Classical Optical System vs MALSTM

Classic Optical System MALS™

Zoom

/ O

IS S

yste

m

Dis

pla

y S

yste

m

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


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)


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

Superiority Advantage

• 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

11:32:20

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 Display MALS™

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

https://youtu.be/XVlt5uOevyQ

https://www.youtube.com/channel/UCA0I5moIJ8KmLtivNB6oBTA

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

Converg

ence d

ista

nce

Focal dis

tance

Display Screen

3D Display Real world

Converg

ence d

ista

nce

Focal dis

tance

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 Eye Operation 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 PRINTING CUSTOMER

CUSTOMER

CUSTOMER

CUSTOMER

MOBILE CAMERA

Mobile Phone

CCTV, Black Box Camera

3D DISPLAY

WISECAM PLATFORM

Interface

MALSTM PLATFORM APPLICATION

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 , Drone 3D 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 Technology

MALS™

Business Model

Interface Interface Interface

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

Ste

p

2nd

Ste

p

Next

Ste

p

Wearable Scanning Camera Wearable Display Module

Business by role

Business by product

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 MALS™ Type II : DML 5.TRENDS 6.STRATEGY of BUSINESS 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


Underkill < 1% Takt Time 1.5 ~ 1.8 sec

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


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%

Takt Time 1.5 ~ 1.8 sec

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 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



Generally Manual Inspection Result (%)





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 ???

* Exceptions of detectability

Lower repeatability due to lot defect, defect size ±2um change, or floating particle

Grey level difference < 30GV 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



* Exceptions of detectability

Lower repeatability due to lot defect, defect size ±2um change, or floating particle


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



* Exceptions of detectability Lower repeatability due to lot defect, defect size ±2um change, or floating particle
