Product Details
Name： 4× Binocular/6× Binocular Front Lens
Model Number： FSD-1/2
Product Description： The FSD-1 4× binocular/FSD-2 6× binocular front lens is used to test the non-parallelism of the optical axis and the magnification difference of the binocular vision system. It is widely used in optical testing instruments.
Technical Parameters：
Objective Lens Focal Length：80/120mm
Effective Aperture：φ20/30mm
Magnification：4×/6×
Resolution： 7.5″/5″
Field of View： 12°/8°
Exit Pupil Diameter：φ5mm
Exit Pupil Distance：17.40/17.40mm
Eyepiece Diopter Adjustment Range：±5 diopters
Measurement Range：V and H are both ±2°
Eye Relief：64 mm
Dimensions l×d×h：137×106×41/175×110×45mm
Weight：1/1.25kg
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