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8X18 Monocular High Definition Kids toys General use Cellphone BAK4 Multi-coated #02507290

8X18 Monocular High Definition Kids toys General use Cellphone BAK4 Multi-coated
$ 13.99
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Eye Relief (mm): 16
Exit Pupil Diameter (mm): 3mm
Objective Lens (mm): 18
Optical system: Porro


Compatibility Cellphone,
Material Metal, Rubber, Plastic,
Features High Definition,
Structures Monocular,
Eye Relief (mm) 16,
Exit Pupil Diameter (mm) 3mm,
Magnification 8,
Objective Lens (mm) 18,
Field Range (°) ,
Eye Lens(mm) 13,
Prism Type BAK4,
Optical system Porro,
Optical Coating Multi-coated,
Net Dimensions(cm) 9.5*8.0*5.2,
Net Weight(kg) 0.072,
Listing Date 12/23/2014,
Type Zoom Binoculars, Normal,
Exit Pupil Diameter Range (mm) 3-4mm,
Eye Relief Range (mm) >20mm,
Lens Diameter(mm) 12-20MM,
Magnification Range
Magnification Range 5x to 9.9x,



  1. Q: What is night vision for the optical telescopes?
  • A:Night vision is the ability to see in low light conditions. Whether by biological or technological means, night vision is made possible by a combination of two approaches: sufficient spectral range, and sufficient intensity range.

    Night vision technologies can be broadly divided into three main categories: image intensification, active illumination and thermal imaging. The Optical telescopes use the principle of Image intensification to achieve the function of night vision.

    Image intensification magnifies the amount of received photons from various natural sources such as starlight or moonlight. Therefore, under low-light conditions, through the optical telescope we can only see the fuzzy image, except for the stars. We call it "Low Light Night Vision".

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