G2 optical resin lenses-Table 1

Each gun sight uses two G2 inverted-image lenes which are used to invert the inverted image formed by objective lens into erecting image. G2 inverted-image lens consists of two identical spherical lenses to constitute double convex lens. Its parameters are as follows:

Focal length f'=31.10mm

Front intercept sf=-30.2mm

NO.

Name

Type

f′

sf

sf′

D0

OD(Φ)

Center thickness

Edge thickness

Picture

G2

Inverted-image lens

Double convex

31.10

-30.2

30.2

10

11.7

2.5

1.4

G2-1

Inverted-image lens

Double convex

21.07

-20.21

20.21

10

11.8

2.5

0.75

G3

Eyepiece

Double salient 

80.88

-80.20

79.55

20

21.9

2.6

1.44

G3-1

Eyepiece

Double salient 

75.33

75.06

20

21.8

3

1.37

ST-1

Objective lens

uneven 

28.10

-28.34

24.15

14

16

5.71

2.1

ST-2

Projection screen

Flat convex

56.62

-50.58

56.62

34

36

8.5

2.4

ST-7

Right angle prism

Length×Width×Height 14×10×7.07

ST-9

The first lens

Double salient 

48.62

-48.02

46.14

14.4×20.05

ST-10

The second lens

Plane concave

16.92

17.75

-16.92

12

10×14.7

ST-11

The third lens

Concave flat

-20.87

20.75

-22.7

8.31

8×10.5

ST-12

The fourth lens

Flat convex

23.03

-20.55

23.03

10.4×8

ST-13

25X eyepiece

Double salient 

10.07

-9.384

9.384

3.4

6

2

1.04

ST-14

5X objective lens

Double convex

13.67

-12.62

12.62

3.4

6

3

2.3

ST-14-1

4X objective lens

Double convex

17.264

-16.227

16.227

3.4

6

3

2.4

ST-15

10X objective lens

Double convex

8.19

-7.11

7.11

3

6

3

1.8

ST-16

15X objective lens

Double convex

5.8

-4.61

4.61

2

4

3

2.2

ST-16-1

26X objective lens

Double convex

3.943

-2.99

2.99

2

4

2.5

1.2

ST-17

Telescope objetive lens

Double concave 

-27.94

28.27

-28.27

15

17

1

3.7

ST-18

Telescope objetive lens

Convex flat

101.57

-101.57

98.2

30

31.6

5

2.4

ST-19

Qi Wei field lens

Double convex

49.43

48.82

25

5

1.64

ST-20

Qi Wei field lens

Double convex

40.06

39.29

27

6.3

1.22

ST-21

Objective of door scope

29.5

-29

29.52

20

5.71

1.58

ST-22

Right angle prism

Length×Width×Height 17×13×9.19

ST-23

Negative lens of viewfinder

Plane concave

80.41

81.75

-80.41

28

34.8×27

2

5.8

ST-24

Positive lens of viewfinder

Convex flat

79.48

-79.48

76.80

30

30×25

4

1

ST-25

Negative lens of viewfinder

Plane concave

-201.5

20.28

-201.5

22

23×18

2

2.6

ST-26

Positive lens of viewfinder

Flat convex

248.5

-247.1

248.5

9×8

2

ST-27

Astronomy objective lens

Flat convex

24.140

-16.005

24.14

13

4

2.06

ST-28

Astronomy eyepiece

Convex flat 

36.979

-36.979

34.633

17

3.5

1.4

ST-29

Astronomy eyepiece

Convex flat 

19.313

-19.313

15.961

12

5

2.87

ST-30

Astronomy objective lens

Double convex

243.672

-241.442

242.202

47

5.5

2.94

ST-30A

Astronomy objective lens

Double convex

239.49

-237.09

238.437

47

5.5

2.94

ST-31

Projection screen

Convex flat 

101.48

-101.48

95.45

44

45

9

2.28

ST-32

Astronomy eyepiece

uneven 

-196.00

198.535

-194.82

16

2

ST-33

Astronomy objective lens

Double convex

146.278

-144.12

144.861

32

5.3

ST-33A

Astronomy objective lens

Double convex

143.361

-141.21

141.939

32

5.3

ST-34

Astronomy eyepiece

uneven 

-118.23

120.523

-117.16

14

1.8

ST-35

Objective lens of viewfinder

Plane concave

-36.2

37.09

-36.2

17.4

16.9×11.9

1.33

3.6

ST-36

Eyepiece of viewfinder

Flat convex

41.69

-37.28

41.69

9.9×8

2.17

ST-37

Reversing lens 2

Double convex

56.321

55.427

55.185

12

14

3

2.1

ST-38

Reversing lens 1

Double convex

40.337

-39.523

39.114

12

14

3

1.74

ST-39

Eyepiece of gun sight

Double convex

48.642

-43.354

46.298

33.5

35.5

11

3.75

ST-40

Telescope objetive lens

Convex flat 

120.49

-120.49

118.34

24

25.6

3.2

1.8

ST-41

Telescope eyepiece

Double concave 

-45.36

44.69

-44.69

9

11

2

2.68

ST-42

Small negative lens

bump 

-267.78

267.289

-269.87

32

2.5

ST-43

Medium negative lens

bump 

-447.75

446.995

-450.91

47

3.8

ST-44

Large negative lens

bump 

-302.87

301.88

-306.72

63

4.5

ST-45

Objective lens 3

Double convex

-174.82

175.33

-175.33

12.8

14

1.5

1.78