Long Working Distance Objective Lens (Same Focal Length 45 mm), EPL Series

[Features]
·A long working distance objective lens with infinity correction and a parfocal length of 45 mm that can be used for coaxial observation systems, laser-introduced optical systems, etc.
·It can be used for microscopic observation of distant subjects as well as for condensing visible laser light.
·Chromatic aberration is corrected in the visible range (400 to 700 nm).
·EPL/EPLE is lightweight and can improve the response speed of the objective lens drive mechanism (SFS-OBL/SFAI-OBL) for autofocus, etc.
·A fixed objective lens holder (LHO-26) is available.
·An observation unit with coaxial illumination (OUCI-2) and a dichroic block for laser introduction (DIMC) are available as a lens barrel for laser processing.
· * When using the objective lens for laser machining, widen the incident beam diameter (1/e^2) to approx. half the pupil diameter.
· * If the incident beam is too thin, you will not get a small focused spot.
· * Also, high energy density of the laser can damage the objective lens.
· * When laser processing is performed using an objective lens, the lens surface of the objective lens may become dirty due to the processed flying particles.
· * Make sure you have a sufficient working distance (WD) or insert a thin protective glass to keep the objective lens clean.
· * The magnification is the value when using the imaging lens f = 200 mm.
· * When used with microscope barrels from other manufacturers, the magnification may differ.
· * Check the focal length of the imaging lens of the lens barrel you are using, and obtain the actual magnification from the ratio of the focal length of the imaging lens to the focal length of the objective lens.