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被設計用來將色差和球面像差減至最小的透鏡。這兩片透鏡分別用兩種色散能力不相同的玻璃制成。兩個透鏡元素被組合在一起，以便一片的色差由另一片來抵消。
|
技術指標 |
|
|
設計波長 |
480.0,546.1,643.8nm |
|
尺寸公差 |
+0.0，-0.15mm |
|
焦距公差 |
+/-2% |
|
偏心 |
3 arc minute |
|
通光口徑 |
>85% |
|
面形 |
λ/4@632.8nm |
|
光潔度 |
60/40 |
|
倒角 |
0.25mm*45° |
|
鍍膜 |
λ/4 Wave MgF2@550nm |
正消色差透鏡
|
標準型號 |
φ(mm) |
f (mm) |
R1 (mm) |
R2=R3（mm） |
R4（mm） |
TC1(mm) |
TC2(mm) |
f b (mm) |
透鏡A |
透鏡B |
|
ALP0101 |
6 |
15 |
8.831 |
-6.546 |
-19.77 |
2.71 |
1 |
13.066 |
BK7 |
SF5 |
|
ALP0102 |
6 |
20 |
12.356 |
-8.511 |
-24.38 |
2.6 |
1 |
18.288 |
BK7 |
SF5 |
|
ALP0103 |
6 |
25 |
15.704 |
-10.666 |
-29.99 |
2.3 |
1 |
23.455 |
BK7 |
SF5 |
|
ALP0104 |
6 |
30 |
18.88 |
-12.942 |
-36.48 |
1.9 |
1 |
28.695 |
BK7 |
SF5 |
|
ALP0105 |
8 |
25 |
15.596 |
-10.814 |
-30.48 |
2.9 |
1 |
23.125 |
BK7 |
SF5 |
|
ALP0106 |
8 |
30 |
18.88 |
-12.882 |
-36.22 |
2.7 |
1 |
28.277 |
BK7 |
SF5 |
|
ALP0107 |
10 |
20 |
12.3 |
-9.02 |
-25.23 |
3.6 |
1 |
17.625 |
BK7 |
SF5 |
|
ALP0201 |
12 |
25 |
15.346 |
-11.35 |
-31.92 |
4.2 |
1.3 |
22.286 |
BK7 |
SF5 |
|
ALP0202 |
12.7 |
25 |
15.596 |
-11.402 |
-31.05 |
4.3 |
1.3 |
22.251 |
BK7 |
SF5 |
|
ALP0203 |
12.7 |
30 |
18.535 |
-13.49 |
-37.84 |
4 |
1.3 |
27.36 |
BK7 |
SF5 |
|
ALP0204 |
12.7 |
40 |
25.23 |
-17.539 |
-48.75 |
3.4 |
1.3 |
37.778 |
BK7 |
SF5 |
|
ALP0205 |
12.7 |
50 |
31.26 |
-21.93 |
-62.37 |
3.1 |
1.3 |
47.992 |
BK7 |
SF5 |
|
ALP0206 |
12.7 |
60 |
37.33 |
-26.42 |
-75.86 |
2.8 |
1.3 |
58.127 |
BK7 |
SF5 |
|
ALP0207 |
12.7 |
75 |
46.77 |
-32.96 |
-94.62 |
2.6 |
1.3 |
73.227 |
BK7 |
SF5 |
|
ALP0208 |
20 |
65 |
40.09 |
-29.58 |
-83.59 |
6.3 |
2 |
60.868 |
BK7 |
SF5 |
|
ALP0301 |
25.4 |
60 |
37.33 |
-27.16 |
-75.86 |
7 |
2 |
55.565 |
BK7 |
SF5 |
|
ALP0302 |
25.4 |
120 |
73.28 |
-54.33 |
-159.96 |
4.2 |
2 |
117.103 |
BK7 |
SF5 |
負消色差透鏡
|
標準型號 |
φ(mm) |
f (mm) |
R1 (mm) |
R2=R3（mm） |
R4（mm） |
TC1(mm) |
TC2(mm) |
f b (mm) |
透鏡A |
透鏡B |
|
ALN0101 |
12.7 |
-25 |
-15.6 |
13.09 |
44.16 |
3 |
2.67 |
-27.5 |
BK7 |
F2 |
|
ALN0102 |
12.7 |
-40 |
-24.45 |
17.97 |
66.6 |
3 |
2.34 |
-42.5 |
BK7 |
F2 |
|
ALN0103 |
25.4 |
-50 |
-31.19 |
24.89 |
85.31 |
3 |
4.22 |
-53.3 |
BK7 |
F2 |
