光學榮譽證

1) 定義並繪畫出下列各項︰

a) 焦距
b) 橫向顏色
c) 縱向顏色
d) 正透鏡像差
e) 球面像差
f) 負透鏡
g) 消色差物鏡(Achromatic lens)
h) 兩種變形(distortion)
I) 光的折射

2) 解釋當光射進水、油、長石和鏡子時,會有何反應

3) 說出並畫出正透鏡和負透鏡的圖表各三種

4) 知道當要測試鏡片的焦距時,光源應有的最少距離

5) 找出至少四種鏡片的焦距,其中一塊是負透鏡

6) 透過圖表解釋,為何正透鏡會使影像翻轉和倒轉

7) 以圖表解釋三菱鏡的情況,並列出不同顏色會出現及消失的角度

8) 展示當光射進單向鏡時,會有何反應

9) 用鏡子和鏡片製作一個光學儀器,例如潛望鏡、投影器或簡單望遠鏡

10) 解釋在雙筒望遠鏡中,何謂"6x35"及"7x50"

11) 定義相機的名詞"f/stop"(光圈值),並知道何為光圈的速度,及比較f/18.5和f/18的鏡頭速度

 

Level 2

English Version:

1. Define and draw a diagram of the following:
a. Focal length
b. Lateral color
c. Longitudinal color
d. Positive lens aberration
e. Spherical aberration
f. Negative lens
g. Achromatic lens
h. Two kinds of distortion
i. Refraction of light

2. Explain how light behaves when it strikes or traverses water, oil, feldspar, and a mirror.

3. Name and draw diagrams of three kinds of positive lenses and three kinds of negative lenses.

4. What should be the minimum distance of light source from the lenses when testing for focal length?

5. Find the focal length of at least four lenses, one being a negative lens.

6. Explain by diagram why an image from a positive lens makes an image reversed and inverted.

7. Show with diagrams how a prism works. State the angles at which the colors appear and disappear.

8. Show and demonstrate what happens when light strikes one-way glass.

9. Construct one optical instrument using mirrors or lenses, such as a periscope, a slide or opaque projector, or a simple telescope.

10. Explain what is meant by the term 6 x 35 and 7 x 50 as applied to binoculars.

11. Define the term "f/stop" as used in connection with cameras. What does it mean when a lens is fast or slow? Is an f 18.5 lens faster or slower than an f 18 lens?

 

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