Hangzhou Contrastech Co., Ltd.

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Hangzhou Contrastech Co., Ltd. China top leading professional machine vision products manufacturers and suppliers. Stay updated with our latest releases and updates.

Over 100 countries' customers and tens of thousands of applications in automation optics and image data processing. CONTRASTECH is committed to manufacturing and offering reliable industrial and research imaging products. You can easily purchase our products directly from our official store at shop.contrastech.com.

16/10/2026

Why does lighting matter in AOI?
The same component can look very different under different lighting conditions.
CONTRASTECH’s Three-Color AOI Illumination is designed to give machine vision systems more flexibility when inspecting PCBs and surface defects.
With customizable LED angles and independent color control, different lighting conditions can be adjusted to improve image contrast and make inspection features easier to see.
From solder joints and component details to surface defects, the right light can make a real difference.
See how the right illumination changes the image. 👀

What can you see beyond visible light?Some inspection tasks need more than a standard visible camera.The iCt-SWX500S-Pro...
14/10/2026

What can you see beyond visible light?
Some inspection tasks need more than a standard visible camera.
The iCt-SWX500S-Pro combines a 5MP IMX992 InGaAs sensor, 400–1700 nm spectral range, and up to 132.1 fps for demanding industrial imaging.
With Global Shutter, ROI support, and CXP-12 up to 12.5 Gbps, it is built for fast image acquisition and flexible integration.
Applications include silicon wafer inspection, fruit spoilage detection, fog pe*******on, and packaging inspection.
Sometimes, the detail you're looking for isn't visible to the human eye.

10/10/2026

Blurry Image on Your Line? Don’t Replace the Camera Just Yet. 🔍

A tiny speck of dust can create image artifacts, false rejects, and unnecessary downtime — making a perfectly good camera look like the problem.

Before replacing the camera, check the sensor and protective glass.

⚠ But don’t just wipe it.
Dry dust + the wrong cleaning method can cause scratches or push contaminants further into the optical path.

🔹 Power down the camera first
🔹 Remove loose dust with clean, oil-free air
🔹 Follow the cleaning method recommended for your camera model
🔹 Inspect the sensor/filter surface before reinstalling the lens

Sometimes, the “camera problem” isn’t the camera at all.

👆 Watch the video for the proper cleaning routine.
Save it for your next maintenance check.

When visible light isn't enough. UV imaging can reveal fluorescence, residues, and low-contrast defects that conventiona...
05/10/2026

When visible light isn't enough.
UV imaging can reveal fluorescence, residues, and low-contrast defects that conventional imaging may miss.
Explore our UV imaging solutions for 200–400nm UV response, high sensitivity, and precision inspection.
👉 Explore more:https://shop.contrastech.com/pages/see-beyond-visible-light

Why does telecentric optics matter in AOI?When inspection involves measurement, perspective distortion can make a small ...
03/10/2026

Why does telecentric optics matter in AOI?
When inspection involves measurement, perspective distortion can make a small difference matter.
A telecentric lens helps maintain consistent image size and magnification, making it easier to inspect dimensions, edges, and surface features across the field of view.
For large-area AOI, matching the camera with the right telecentric lens can also help reduce the number of captures needed.
Better imaging starts with the right optics.

Camera Connected. But No Image. What Went Wrong?The camera is detected.The connection looks fine.But the screen is still...
03/10/2026

Camera Connected. But No Image. What Went Wrong?

The camera is detected.
The connection looks fine.
But the screen is still blank. 😶

Before blaming the camera, check these:

🔌 Power & Connection
Is the camera powered and connected properly?

💻 Driver & Software
Does the software recognize the camera correctly?

🎯 Trigger
Is the camera waiting for a trigger that never arrives?

⚙ Acquisition Settings
Check exposure, frame rate, ROI, and acquisition mode.

🌐 GigE? Check the Network
IP settings, bandwidth, cables, and packet loss can all affect image acquisition.

Connected doesn't always mean ready to capture.

When there's no image, start with the basics—and troubleshoot the system layer by layer.

01/10/2026

One inspection target. Different lighting conditions.
A single lighting setup doesn't always reveal every defect.
With multi-color AOI illumination, different channels such as R / G / B / W / IR can be selected and controlled independently to create the right contrast for different inspection features.
From solder joints and component markings to surface defects, changing the light can change what the camera sees.
Sometimes, better inspection starts with better light.

25/09/2026

SEE BEYOND VISIBLE LIGHT 👀

When visible light isn't enough, UV imaging reveals what the eye can miss.

From fluorescence and hidden defects to precision inspection, discover how UV cameras, lenses and illumination open up new possibilities.

See what’s beyond visible light.

Explore More →https://shop.contrastech.com/pages/see-beyound-visible-light

Mooncakes, lanterns, family dinners… and one very bright moon. 🌕Mid-Autumn Festival is celebrated in many different ways...
24/09/2026

Mooncakes, lanterns, family dinners… and one very bright moon. 🌕
Mid-Autumn Festival is celebrated in many different ways.
In some places, it's all about mooncakes and tea.
In others, it's lanterns, night markets, family gatherings — or simply sitting outside and enjoying the moon.
Different traditions, different foods, different ways of celebrating.
But somehow, the moon always makes it feel a little more connected.
Wherever you are this Mid-Autumn Festival, we hope you get a chance to slow down, look up, and enjoy the evening.
Happy Mid-Autumn Festival! 🌕

19/09/2026

Why does telecentric optics matter in precision inspection?
The difference can be seen clearly. 👀
A telecentric system helps provide:
• Uniform brightness across the field of view
• Minimal perspective distortion
• Sharp edges and fine details
• More reliable measurement
Compared with conventional optics, these advantages can make a real difference when accuracy and consistency matter.
Watch the video for a side-by-side comparison.
Telecentric optics. Built for precision.

Address

No. 8 Xiyuan 9th Road West Lake District
Hangzhou
310030

Telephone

86-571-89712238

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