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BRESEE 10-30xX50 mm Binoculars High Definition Waterproof Fogproof Generic Night Vision Carrying Case Roof Prism General use BAK4Fully #02697857

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BRESEE 10-30xX50 mm Binoculars High Definition Waterproof Fogproof Generic Night Vision Carrying Case Roof Prism General use BAK4Fully
$ 49.99
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Product Details

Brand: BRESEE

Selling Points

1.
Features: Waterproof Night Vision
2.
Eye Relief (mm): 20
3.
Exit Pupil Diameter (mm): 3mm-1mm
4.
Objective Lens (mm): 50
5.
Optical system: Roof
6.
Optical Coating: Fully Multi-coated

Specifications

Specification
Material Rubber,
Features Waterproof, Night Vision, Roof Prism, Carrying Case, Generic, Fogproof, High Definition,
Structures Binoculars,
Eye Relief (mm) 20,
Remote Controller Battery N / A,
Exit Pupil Diameter (mm) 3mm-1mm,
Resolution (PPI) 1000,
Magnification 10-30x,
Maximum Useful Magnification 30x,
Objective Lens (mm) 50,
Field Range (°) ,
Eye Lens (mm) 35,
Prism Type BAK4,
Focus System Central Focusing,
Optical system Roof,
Optical Coating Fully Multi-coated,
Eyecups Twist-up,
Net Dimensions (cm) 12.0*19.0*19.0,
Net Weight (kg) 0.8,
Waterproof Level IPX-4,
Listing Date 06/08/2017,
Exit Pupil Diameter Range 2-3, <2,
Eye Relief Range 15-20,
Lens Diameter >30MM,
Type Zoom Binoculars,
Magnification Range
Magnification Range 20x & Up,

Photos

FAQs

  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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