2D Automated Optical Inspection Systems


2Di Series

2Di-LU1 Bottom-side - Inline AOI

Bottom-scan AOI system for automated PCB back-end production.
Ensuring the quality of through-hole solder parts after dip, selective, and wave soldering, and improving productivity.

No need to flip the board! Bottom-side inspection machine that enhances line productivity

Ensures quality and productivity by eliminating the need for manual operation and board flipping.

2Di-LU1's Feature


Saki’s unique Line Scan technology

Saki’s unique Line Scan imaging technology is applied to bottom-side inspection. High-speed imaging enables inspection of large PCBs in one pass in about 9 seconds. This production is compatible with large odd-shaped inserted component mounted-PCBs and heavy jigs.

Bottom-side scanning

"What is Saki's Line Scan Technology?"

Line Scanning Technology

Line Scanning system

FOV camera gantry

Saki 2D AOI systems use a unique line-array CCD camera to capture the entire PCB image for each inspection. The speed of image capture is unaffected by the number of components on the PCB, as is the case with conventional FOV-type AOI systems. Saki's Line Scan Technology is the backbone of our 2D AOI systems, producing accurate and reliable inspection data at high speeds.


Inspection algorithms that accurately determine defects

THT solder inspection "FUJIYAMA" algorithm

By analyzing solder meniscus and pin presence using Saki’s unique lighting technology, the following defects are simultaneously inspected:
• Copper exposure • Excessive solder
• Pin presence • Insufficient solder
• Blow holes • Solder bridges

FUJIYAMA user interface

Extra Component Detection (ECD) inspection capability

Utilizing Saki’s technology that scans the entire PCB in one pass, it is possible to detect abnormalities such as dropped chip parts and solder balls in the entire board at the same time as normal solder inspection. An average OK image is generated from several images of non-defective boards and compared with the inspection target to automatically detect defects.

ECD inspection window


Software design that can be linked with the SMT inspection process

It uses the same software platform as the 3D Solder Paste Inspection machine (SPI) and 3D Automated Optical Inspection machine (AOI) systems.
Additionally, by using the same system options as Saki’s SPI and AOI solutions, the operator’s workload is reduced.

Software operation screen

2Di-LU1 Promotion Video


2Di-LU1 3DCG Video


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(W) x (D) x (H) [Main body]mm (in.)
1040 x 1440 x 1500
(40.94 x 56.69 x 59.06)
Weight Approx. 750 Kg (1653.47 lbs)
Electric Power Requirement Single-phase ~ 200-240V +/-10%, 50/60Hz, 700VA
Resolution 18μm
Air Requirement 0.5MPa, 5L/min (ANR)
Target PCB Size
mm (in.)
50 W x 60 L - 610 W x 610 L
(1.97 W x 2.36 L – 24.02 W x 24.02 L)

Inspection area (Scan)
50 W x 60 L - 460 W x 500 L
(1.97 W x 2.36 L – 18.11 W x 19.69 L)
PCB Clearance Top: 130mm (5.12 in.)
Bottom: 40mm (1.57 in.)
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