倩兒 asked in 家用電器相機 · 1 decade ago

請問夜視鏡內部結構是怎樣

請問夜視鏡內部結構是怎樣,希望長細解答,有圖解釋就最好了.

因為本人未接觸過物理,不明白夜視鏡內部結構.希望各位幫手解答一下.

還有夜視鏡與普遍望遠鏡有什麼分別,

請各位幫幫手解答,因為本人要做件有關夜視鏡DUMMY 出來,

雖要理解夜視鏡的內部結構,

萬分感謝.

1 Answer

Rating
  • K.K.
    Lv 5
    1 decade ago
    Favorite Answer

    Night glasses

    Binoculars (night vision goggles on flight helmet)Night glasses are telescopes or binoculars with a large diameter objective. Large lenses can gather and concentrate light, thus intensifying light with purely optical means and enabling the user to see better in the dark than with naked eye alone. Often night glasses also have a fairly large exit pupil of 7 mm or more to let all gathered light into the user's eye. However, many people can't take advantage of this because of the limited dilation of the human pupil. To overcome this, soldiers were sometimes issued atropine eye drops to dilate pupils. Before the introduction of image intensifiers, night glasses were the only method of night vision, and thus were widely utilized, especially at sea. Second World War era night glasses usually had a lens diameter of 56 mm or more with magnification of seven or eight. Major drawbacks of night glasses are their large size and weight.

    2008-04-12 05:50:39 補充:

    Night vision approaches

    Spectral range

    Night-useful spectral range techniques make the viewer sensitive to types of light that would be invisible to a human observer. Human vision is confined to a small portion of the electromagnetic spectrum called visible light.

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