VT-TLL-23 Liquid Telecentric Lens | 2/3" C-Mount Electronic Focus Lens

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