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| Coad | 663996 | Type | Infinity-Corrected Tube Lens | |
| Wavelength(nm) | 400 - 2000 | Focal Length(mm) | 200 | |
| Maximum Incident Beam Diameter(mm) | - | Magnification(X) | - | |
| Dimensions | 44.1mm（Length） | Thread Specification | SM2 External Thread | |
| Field of View | - | Weight | - | |
| Work Distance | 152.9mma | Clear Aperture | 37.4mm | |
| Image Plane Diameter | 22.0mm | Total Optical Path Length | 420.0mm | |
| Aperture Diameter | 20.0mm | Pupil Distance | 229.1mmb（Telecentric） | |
| Resolution | - | F-Theta Distortion | ＜0.2% | |
| Surface Quality | 40-20 | Design Wavelength | 400 - 2000 | |
| Coating Specifications | Ravg<1.5%，@400-1300nm | Lens Design | Apochromatic |
LBTEK offers tube lenses with focal lengths of 100 mm, 165 mm, 180 mm, 200 mm, 300 mm, and 600 mm, providing diffraction-limited performance within the working wavelength and field of view range. These lenses are compatible with infinity-corrected objectives from various leading objective manufacturers. They are widely used in high-resolution imaging, biomedical applications, machine vision, and more. In system applications, dual tube lenses can be used to build relay imaging systems, combined with objectives to create various magnification imaging systems, serve as replacements for existing system tube lenses, or be used with microscopes to produce high-quality images. Additionally, telecentric tube lenses are also suitable for laser scanning applications.
LBTEK infinity-corrected tube lenses are designed to be used in conjunction with infinity-corrected objectives to construct infinity-corrected optical systems. To minimize the losses caused by surface reflections, both sides of all lenses in the infinity-corrected tube lenses are coated with broadband anti-reflection coatings. The anti-reflection coating wavelength ranges are 350-750 nm and 700-1100 nm. The infinity-corrected tube lenses exhibit diffraction-limited optical performance within the working wavelength range.
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