ST-98 optical resin lens-Table 3
| In the design of the telescope, in order to shorten the light path, shorten the lens body and increase the brightness, one field lens is often introduced into the eyepiece. The field lens is a positive lens (convex lens). ST-100 field lens is almost used for the telescopes, such as 7×35, 8×32 and 8 × 40, etc. Its parameters are as follows: | ||
| Outside diameter(OD)ø=20.5mm | Effective aperture D0=19mm | |
| Center thickness=4.8mm | Edge thicknes=1.49mm | |
|
Focal length f'=34.34mm |
Front intercept sf=-31.92mm |
Back intercept sf'=33.48mm |
| Lifesize field lens | |
 |
Table 3 Data of "STOEMI" optical resin lens
|
No. |
Name |
Type |
f′ |
sf |
sf′ |
D0 |
OD(Φ) |
Centre diameter |
Edge thickness |
Picture |
|
|
ST-98 |
Objective lens of viewfinder |
Plano-concave |
-106.49 |
107.56 |
-106.49 |
22.5×15 |
1.6 |
1.0 |
|
||
|
ST-99 |
Eyepiece of viewfinder |
Plano-convex |
127.44 |
-125.96 |
127.44 |
13.5×9 |
2.2 |
1.0 |
|
||
|
ST-100 |
Field lens |
8×32 |
34.34 |
-31.92 |
33.48 |
19 |
20.5 |
4.8 |
1.49 |
|
|
|
ST-101 |
Telescope objectiive lens |
3×26 |
76.96 |
-76.96 |
74.88 |
26 |
28.2 |
3.1 |
0.8 |
|
|
|
ST-102 |
Telescope eyepiece |
3×26 |
-25.08 |
24.27 |
-25.08 |
10 |
14.1 |
1.2 |
1.86 |
|
|
|
ST-103 |
Camera lens |
E981 |
28.96 |
-30.98 |
25.82 |
8 |
11 |
2 |
1.17 |
|
|
|
ST-104 |
Objective lens of viewfinder |
E981 |
-28.33 |
29.27 |
-28.33 |
10×18 |
1.4 |
1.4 |
|
||
|
ST-105 |
Eyepiece of viewfinder |
E981 |
52.41 |
-52.63 |
51.05 |
8×13 |
1.7 |
1.01 |
|
||
|
ST-106 |
Concave reflection lens |
Ruisheng |
R51.29 |
— |
— |
29×22.74 |
2.7 |
|
|
||
|
ST-107 |
Aspherical lens |
DSL-400 |
3.5 |
— |
2.25 |
2.8/3.5 |
8 |
2.73 |
2.13 |
|
|
|
ST-108 |
Aspherical lens |
DSL-401 |
3.5 |
— |
2.25 |
2.8/3.5 |
5.5 |
2.73 |
2.13 |
|
|
|
ST-109 |
Front camera lens |
VF98A1 |
52.196 |
-54.465 |
49.251 |
10 |
12.4 |
1.2 |
1.1 |
|
|
|
ST-110 |
Back camera lens |
VF98A2 |
45.758 |
-43.081 |
47.747 |
5 |
12.4 |
1.2 |
1.74 |
|
|
|
ST-111 |
Telescope objectiive lens |
TCP02 |
105.63 |
-105.63 |
103.52 |
25 |
30.5 |
3.15 |
1.6 |
|
|
|
ST-112 |
Telescope objectiive lens |
B-C10 |
105.63 |
-105.63 |
103.52 |
30×18 |
3.15 |
1.6 |
|
||
|
ST-113 |
Hollow reflection lens |
CCM |
-65.01R |
— |
— |
55.7 |
61 |
2.5 |
2.82 |
|
|
|
ST-114 |
Field lens of viewfinder |
DQJ6-1 |
-28.17 |
29.11 |
-28.17 |
13.8×10.7 |
1.4 |
1.05 |
|
||
|
ST-115 |
Eyepiece of viewfinder |
DQ6-2 |
48.342 |
-47.186 |
48.342 |
12×6.55 |
1.71 |
0.55 |
|
||
|
ST-116 |
Splitting slope plane lens |
Plane |
— |
— |
— |
26.5×28.48 |
2.2 |
2.2 |
|
||
|
ST-117 |
Protection eyepiece |
Plane |
— |
— |
— |
33×22 |
1.1 |
1.1 |
|
||
|
ST-118 |
Field lens |
735-15A |
39.3 |
-36.2 |
38.89 |
21.5 |
23 |
5.2 |
1.5 |
|
|
|
ST-119 |
Objective lens of viewfinder |
VF98AF1 |
-32.31 |
33.38 |
-32.31 |
18.5×12.4 |
1.6 |
0.8 |
|
||
|
ST-120 |
Eyepiece of viewfinder |
VF98AF2 |
54.48 |
-52.74 |
54.48 |
11.8×8 |
2.6 |
0.8 |
|
||
|
ST-121 |
Objective lens of viewfinder |
47A |
-45.324 |
46.46 |
-45.19 |
15×11 |
|
2.8 |
|
||
|
ST-122 |
Camera lens |
Ceniscus |
33.69 |
|
30.27 |
11.5 |
13.7 |
2.5 |
0.92 |
|
|
|
ST-123 |
Eyepiece of viewfinder |
QJ11-1 |
147.31 |
-145.36 |
147.31 |
20×13.5 |
2.9 |
1.2 |
|
||
|
ST-124 |
Objective lens of viewfinder |
QJ11-2 |
-105.99 |
107.06 |
-105.99 |
22.5×15 |
1.6 |
3.3 |
|
||
|
ST-125 |
Camera lens 1 |
JT1-3 |
10.05 |
-16.40 |
13.94 |
10.8 |
13.45 |
2.9 |
0.9 |
|
|
|
ST-126 |
Camera lens 2 |
JT1-4 |
-9.85 |
10.28 |
-9.92 |
8.2 |
11.3 |
0.8 |
0.9 |
|
|
|
ST-127 |
Camera lens 3 |
JT1-5 |
17.44 |
-17.05 |
16.87 |
5.4 |
10.35 |
1.5 |
1.2 |
|
|
|
ST-128 |
Field lens |
Double convex |
16.622 |
-14.44 |
15.892 |
12.5 |
14 |
4.2 |
1.52 |
|
|
|
ST-129 |
Field lens |
Plano-convex |
40.73 |
-36.71 |
40.73 |
23 |
25 |
6 |
2.1 |
|
|
|
ST-130 |
Filter |
Red, yellow, orange |
— |
— |
— |
23 |
24 |
1.5 |
1.5 |
|
|
|
ST-131 |
Field lens |
Plano-convex |
22.4 |
-19.72 |
22.4 |
12.2 |
13.2 |
4 |
1.8 |
|
|
|
ST-132 |
Field lens |
Aspheric |
30.76 |
-29.55 |
29.91 |
12.5 |
14.2 |
3 |
1.65 |
|
|
|
ST-133 |
The first lens |
Aspheric |
-41.22 |
40.16 |
-43.82 |
8.5 |
11.5 |
2.2 |
2.77 |
|
|
|
ST-134 |
The third lens |
Aspheric |
36.55 |
-33.47 |
37.71 |
13.1 |
16.5 |
3 |
1.33 |
|
|
|
ST-135 |
Lens |
1091-1 |
15.992 |
14.1 |
14.2 |
9 |
14×15 |
2.59 |
1.15 |
|
|
|
ST-136 |
Lens |
1091-2 |
7.74 |
— |
6.9 |
5.5 |
12×14 |
2.43 |
0.83 |
|
|
|
ST-137 |
Telescope objectiive lens |
|
150.285 |
— |
148.273 |
30 |
32 |
3 |
1.2 |
|
|
|
ST-138 |
Telescope eyepiece |
Double concave |
-60.077 |
|
-60.412 |
12 |
14 |
1 |
1.84 |
|
|
|
ST-139 |
Collimating lens |
Double convex |
2.691 |
-2.564 |
2.121 |
2 |
3 |
1 |
1.32 |
|
|
|
ST-140 |
VCD objective lens |
Aspheric |
3.86 |
-2.95 |
2.32 |
4.2 |
7.1 |
3.1 |
3.45 |
|
|
|
ST-141 |
VCD splitting lens |
Plane |
— |
— |
— |
85×5×2.5 |
2.5 |
2.5 |
|
||
|
ST-142 |
VCD grating |
Plane |
Grating fringe 33 pair/mm or 28 pair/mm |
3.5×2.7×0.75 |
0.75 |
0.75 |
|
||||
|
ST-143 |
Objective lens of viewfinder |
Aspheric |
-18.377 |
— |
-19.2 |
12.4 |
13.2 |
2 |
3.85 |
|
|
|
ST-144 |
Eyepiece of viewfinder |
Aspheric |
32.766 |
— |
31.6 |
9.8×7.6 |
3 |
2.33 |
|
||
|
ST-145 |
Objective lens of viewfinder |
Double concave |
-73.581 |
74.511 |
-74.987 |
25.5×16.8 |
2 |
1.2 |
|
||
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E-mail:siduo@stoemi.com http://www.stoemi.com FAX：0086-29-83236416（Office） 0086-29-83310433(Factory)
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