HENBAKER CY900 digital scope night vision monocular for hunting 75mm seismic resistant lens V V***n 2024年12月2日 Приціл дужеякісний , алюміній корпус. Є дальномір і гіроскоп. Працює дужедоб...
Brand Name:DS32 PLUS;Objective lens diameter:35mm;field of view:1°20';shortest sight distance:0.3m;Tripod connection size:M16 or 5/8;Anping accuracy:0.3;multiplication constant:100;water proof:IPX4;Round-trip deviation per kilometer:1.0mm;Instrument net
PURPOSE:To obtain a variable power lens having a long back-focal distance, and also, being compact, by executing the variable power in a state that an image position is kept constant by moving a second lens group and a third lens group, while varying a relative interval between those lens...
1. the act of magnifying (something). magnificación 2. the power of magnifying. the magnification of a pair of binoculars.ampliación, aumento 3. the extent to which something (eg a photograph) has been magnified. The magnification is ten times (10 ).ampliaciónˈmagnifying-glass noun ...
ZOOM LENS, OPTICAL DEVICE AND METHOD OF MANUFACTURING ZOOM LENS A zoom lens according to the present invention has: a first lens group (G1) having positive refractive power; a second lens group (G2) having negative refractive power; a third lens group (G3) having positive refractive power;...
In the basic configuration of a telescope, parallel incoming rays are converted into parallel rays at the output of the ocular lens (eyepiece), and only in the optical system of the observing eye they are focused to the retina, where one would ideally obtain one image point for each angular...
PURPOSE:To obtain variable power rates from about 0.5 times to 2 times with the smaller number of lens elements by constituting the lens system of lenses of 6 elements in 6 groups and constituting the lens system in such a manner that the lens system satisfies specific conditions. CONSTITUTION...
Types of Objective Lenses Low-power objective lens Medium-power objective lens High-power objective lens Oil-immersion objective lens Factors Affecting Objective Lens Performance Numerical aperture (NA) Working distance Correction collars (e.g., for aberrations) ...
Microscope field of view diameter, DVF The calculator determines the microscope field of view from the known magnification of the objective lens and the field number of the eyepiece (ocular) lens. It can also be used to calculate the field of view for a higher power magnification if a lower...
A variable magnification finder has a total power of the positive lens group. 第一镜头组和第二镜头组每... 岩田 周行,島田 良子 被引量: 0发表: 1993年 Wide angle view finder with variable magnification The viewfinder magnification is varied by movement of the third lens unit (3), the ...