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NiMH Batteries (Nickel Metal Hydride) - Ken-A-Vision batteries for cordless

microscopes are specially made batteries of the NiMH type. Technically A nickel

metal hydride battery, abbreviated NiMH, is similar to a nickel-cadmium

(NiCd) battery but has a hydrogen-absorbing alloy for the anode instead of

cadmium. Like in NiCd batteries, nickel is the cathode. A NiMH battery can

have two to three times the capacity of an equivalent size NiCd.

Nickel Metal Hydride Batteries (see NiMH)

Non-cordless (microscope) (wired) – Ken-A-Vision microscopes are all shipped with a

removable power cord (or charger/adapter), Exceptions include the T-2400, T-2700, and

T-3300 series of microscopes, which have a permanently mounted power cord.

NTSC – (see Video Standards)

Numerical Aperture - the numerical aperture (NA) of an optical system is a

dimensionless number that characterizes the range of angles over which the

system can accept or emit light. [In microscopy, the numerical aperture of an

objective lens is defines as NA = Π sine Θ, where Π is the index of refraction of

the medium in which the lens is working (1.0 for air, 1.33 for pure water, and up

to 1.56 for oils), and θ is the half-angle of the maximum cone of light that can

enter or exit the lens.] In microscopy, NA is important because it indicates the

resolving power of a lens. The size of the finest detail that can be resolved is

proportional to λ/NA, where λ is the wavelength of the light. A lens with a larger

numerical aperture will be able to visualize finer details than a lens with a smaller

numerical aperture. Lenses with larger numerical apertures also collect more light

and will generally provide a brighter image.

Objective Lens(es) – Objective lenses are designed to maximize the ultimate resolution of

the microscope. Three criteria are balanced in the design of a high resolution

objective. These include consideration of the wavelengths of light emitted by the

light source used on the microscope, the refractive index of the space between the

front of the objective lens and the specimen (focal distance) and the angular

opening (aperture) of the light cone captured by the objective.

Ocular (see eyepiece)

Opaque materials (see materials)

Output – Electronic

Analog – see Video output

Audio – see Audio output

Digital – see Digital output

Network – see Network output

RJ-45 – see Network output

S-Video – See S-video output

Video – see Video output

15 pin D Sub – see Video output

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VideoLabs Ceiling DocCam Especificaciones Pagina 17