Q1: What is the VT-TLL-23 liquid telecentric lens used for?
A: It is designed for precision machine vision, metrology, semiconductor inspection, and automated optical inspection (AOI) requiring flexible focusing and high measurement accuracy.
Q2: What is the advantage of liquid lens technology?
A: The liquid lens enables electronic focusing, allowing fast and stable working distance adjustment without mechanical movement while maintaining telecentric performance.
Q3: Does the lens maintain telecentricity during focus adjustment?
A: Yes. The lens maintains consistent telecentric imaging, low distortion, and stable magnification across the entire focusing range.
Q4: What magnification range does this lens support?
A: The VT-TLL-23 supports a wide magnification range from 0.4X to 4.0X, making it suitable for various inspection and measurement tasks.
Q5: What is the sensor format and mount type?
A: It is designed for 2/3" sensors with C-Mount compatibility, widely used in industrial machine vision cameras.
Q6: What is the optical performance of this lens?
A: The lens achieves MTF > 0.3 at 100 lp/mm, ensuring high-resolution imaging and accurate edge detection.
Q7: Is a coaxial illumination version available?
A: Yes, an optional coaxial illumination version is available for reflective surfaces such as metal, glass, and polished components.
Q8: What industries commonly use this lens?
A: It is widely used in semiconductor inspection, PCB inspection, electronics manufacturing, precision assembly, and industrial automation.
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Description
Product Description
Liquid Telecentric Lens with Electronic Focus for High-Precision Machine Vision
The VT-TLL-23 Series is a 2/3" C-Mount liquid telecentric lens designed for precision machine vision, metrology, and automated inspection. By integrating liquid lens technology, it enables fast electronic focusing and an extended depth of field while maintaining telecentric imaging performance across the entire focus range.
Available in magnifications from 0.4X to 4.0X, the VT-TLL-23 Series delivers high optical resolution with MTF >0.3 @100 lp/mm, ensuring excellent image sharpness for precision measurement and defect inspection. An optional coaxial illumination version is available for reflective surfaces and demanding inspection applications.
Unlike conventional telecentric lenses that require mechanical refocusing, the liquid lens design enables rapid, repeatable working distance adjustment without compromising magnification, telecentricity, or image quality.
Key Features
✔ Liquid Lens Technology
Electronic focusing enables fast, precise, and maintenance-free focus adjustment.
✔ Extended Depth of Field
Maintains sharp imaging over a larger focus range, improving inspection efficiency.
✔ 2/3" C-Mount Compatibility
Optimized for industrial cameras with up to 2/3" image sensors.
✔ Magnification from 0.4X to 4.0X
Supports a wide range of machine vision and precision measurement applications.
✔ High Optical Resolution
MTF >0.3 @100 lp/mm for accurate edge detection and fine-detail imaging.
✔ Optional Coaxial Illumination Version
Ideal for reflective, polished, and metallic surfaces.
Ideal Applications
- Precision Metrology
- Semiconductor Inspection
- PCB Inspection
- Electronics Manufacturing
- AOI (Automated Optical Inspection)
- Precision Assembly
- Robotics & Machine Vision
- Surface Defect Inspection
Specifications
2/3" Liquid Telecentric Lens
| Model | Coaxial | Mag. | WD+Liquid | DOF | F/# | MTF (lp/mm) |
|---|---|---|---|---|---|---|
| VT-TLL04-23 | No | 0.4x | 100-120mm | ±1.8mm | 6.5 | >0.3@100 |
| VT-TLL05-23-A | No | 0.5x | 110-120mm | ±1.8mm | 10 | >0.3@100 |
| VT-TLL05-23-C | No | 0.5x | 100-120mm | ±1.8mm | 10 | >0.3@100 |
| VT-TLL17-23 | No | 1.75x | 100-120mm | ±0.2mm | 13 | >0.2@60 |
| VT-TLL40-C-23-A | Yes | 4.0x | 64.7mm | 2mm | 17 | >0.3@50 |
| VT-TLL40-C-23-C | Yes | 4.0x | 62.778mm | 2mm | 17 | >0.3@50 |
| VT-TLL40-23 | No | 4.0x | / | 2mm | 17 | >0.3@50 |
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