TheXTL-3022 is a microscope that are applied on areas like medical and health, electronics, precision machinery industry and so on, especially suitable to inspect the naked IC, LCD printing paste and personal computers. It is a zoom lens microscope that can erect image and can be connected to a CCD camera. The unit's zoom ratio is 1:7. Its lens zoom range is 0.65X-4.5X. The eyepiece is WF10X/20mm, its total magnification is 65X-450X, its field of view is¢30.7mm-¢4.4mm and has a working distance of 95mm. In addition, the microscope has interpupillary distance of 55mm-75mm and a trinocula tube of inclined 45º