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first page  ::  Optical components and technologies  ::  Infrared objectives

Infrared fixed-focal-length objectives

 

Item

Focal length, mm

Focal number

Field of view, deg

Weight, kg

No.

1

22

1

40×30

1,16

2

22,5

1

40×30

0,43

3

25

1

35×26

0,1

4

50

1

17×13

0,54

5

50*

1,4

17×13

0,5

6

75

1

12×9

0,3

7

100

1

8,5×6,5

1,08

8

150

1,3

6×4,5

1,4

9

200

1,7

4,3×3,2

1,9

10

300

2,2

3×2

2,2

Operating spectral range, mm                          8¸13

Linear field of view, mm                                16´12

Transmission, %                                          80¸90

Concentration of energy in the circle
of 50 mm in diameter, %                               80¸90

* - Objective for the range of  3-5 mm, the transmission factor being at the wavelength
of 4
mm                                                                95%

 

 

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