功能

• A long-actuated objective lens with infinity correction and a 95 mm focal length that can be used in coaxial observation systems and laser introduction optical systems.
• It can be used to collect visible laser light in addition to microscopic observation of distant objects.
• Chromatic aberration is corrected in the visible range (400~700 nm).
• The SPAL/SPAHL has a long working distance (WD), corrects the curvature of the image plane, and provides a natural view to the periphery of the field of view.
• A fixed objective lens holder (LHO-26) is available.
• The observation unit with coaxial illumination (OUCI-2) and the dichroic block for laser introduction (DIMC) are available as the lens barrel for laser processing.
• * When the objective lens is used for laser processing, extend the incident beam diameter (1/e^2) to about half of the pupil diameter.
• * If the incident beam is too thin, a small focusing spot cannot be obtained. Also, high laser energy density can damage the objective lens.
• * When laser beam machining is performed using an objective lens, the surface of the objective lens may become dirty due to the machined spring.
• * Ensure sufficient operating distance (WD) or insert a thin glass shield to protect the objective lens from contamination.
• * The magnification is the same as when the imaging lens f=200 mm is used.
• * Magnification may differ when used with a microscope barrel of another manufacturer.
• * For the actual magnification, check the focal length of the imaging lens of the lens barrel you are using, and determine the ratio between the focal length of the imaging lens and the focal length of the objective lens.