Abstract

Image intensifiers (Generations 1, 2, and 3) in graded-index systems convert IR radiation to visible light, provide screen presentation, and supply 100,000 gain. An idealized system is described.

© 1980 Optical Society of America

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References

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  1. I. P. Csorba, Appl. Opt. 18, 2440 (1979).
    [CrossRef] [PubMed]
  2. I. P. Csorba, Appl. Opt. 16, 2647 (1977).
    [CrossRef] [PubMed]
  3. I. P. Csorba, “Analytical Approach to the Modulation Transfer Function of the Generation 2 Wafer Tube,” in Proceedings, Electro-Optical Systems Design Conference, September 1976, New York. (Industrial and Scientific Conference Management, Inc., Chicago1976), p. 646.
  4. I. P. Csorba, “P. E. M. for Automatic Production for Multialkali Photocathode Processing,” Final Engineering Report, Contract DAAB05-74-C-2521, U.S. Army Electronics Command, Fort Monmouth, New Jersey (December1975).
  5. Selfoc Micro Lens, Nippon Sheet Glass Co., Ltd.

1979

1977

Csorba, I. P.

I. P. Csorba, Appl. Opt. 18, 2440 (1979).
[CrossRef] [PubMed]

I. P. Csorba, Appl. Opt. 16, 2647 (1977).
[CrossRef] [PubMed]

I. P. Csorba, “Analytical Approach to the Modulation Transfer Function of the Generation 2 Wafer Tube,” in Proceedings, Electro-Optical Systems Design Conference, September 1976, New York. (Industrial and Scientific Conference Management, Inc., Chicago1976), p. 646.

I. P. Csorba, “P. E. M. for Automatic Production for Multialkali Photocathode Processing,” Final Engineering Report, Contract DAAB05-74-C-2521, U.S. Army Electronics Command, Fort Monmouth, New Jersey (December1975).

Appl. Opt.

Other

I. P. Csorba, “Analytical Approach to the Modulation Transfer Function of the Generation 2 Wafer Tube,” in Proceedings, Electro-Optical Systems Design Conference, September 1976, New York. (Industrial and Scientific Conference Management, Inc., Chicago1976), p. 646.

I. P. Csorba, “P. E. M. for Automatic Production for Multialkali Photocathode Processing,” Final Engineering Report, Contract DAAB05-74-C-2521, U.S. Army Electronics Command, Fort Monmouth, New Jersey (December1975).

Selfoc Micro Lens, Nippon Sheet Glass Co., Ltd.

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Figures (7)

Fig. 1
Fig. 1

Image-enhancing system.

Fig. 2
Fig. 2

Spectral response of photocathodes.

Fig. 3
Fig. 3

Spectral emission of P-20 phosphor and standard luminosity.

Fig. 4
Fig. 4

Gradient-index fiber imaging system.

Fig. 5
Fig. 5

MFT of image intensifier.

Fig. 6
Fig. 6

Light path in gradient-index fibers.

Fig. 7
Fig. 7

Refraction of a light ray at a boundary.

Tables (1)

Tables Icon

Table I Diffraction-Limited Resolution of the Fiber System

Equations (25)

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sin α 1 = n m 1 sin α 2 ,
L = dAB sin 2 α 1 ,
E 1 = T L d A 1 = T dA d A 1 B sin 2 α 1 = TB m 1 2 sin 2 α 1 , = TB n 2 sin 2 α 2 ,
E 1 = T 1 E 1 m 2 2 = T T 1 B n 2 sin 2 γ p m 2 2 ,
R = 0.41 D γ p n λ in line pairs ,
n 0 n p n 0
n 1 cos γ 1 = n 2 cos γ 2 .
cos γ = 1 γ 2 2 .
n 1 ( 1 γ 1 2 2 ) = n 2 ( 1 γ 2 2 2 ) .
n 2 = n 1 + d n ,
γ 2 = γ 1 + d γ .
( dn ) / ( d γ ) = n γ .
n r = n 0 exp ( γ 2 γ 0 2 2 ) ,
n r = n 0 exp ( γ 0 2 2 ) n 0 ( 1 γ 0 2 2 ) .
γ 0 = 4 c ( r / P ) ,
n 0 n r n 0 = 8 c 2 ( r P ) 2 ,
n 0 n P n 0 = 8 c 2 ( a P ) 2 ,
n r = n 0 [ 1 n 0 n P n 0 ( r a ) 2 ] .
dr dz = γ = ( γ 0 2 + 2 ln n r n 0 ) 1 / 2 .
r 0 r ( dr ) / { γ 0 [ 1 2 ( n 0 n p ) n 0 r 2 γ 0 2 ] 1 / 2 } = z 0 z dz .
a γ 0 γ p sin [ γ p a ( z z 0 ) ] = r [ 1 ( r 0 a γ p γ 0 ) 2 ] 1 / 2 r 0 [ 1 ( r a γ p γ 0 ) 2 ] .
r = a γ 0 [ n 0 2 ( n 0 n p ) ] 1 / 2 sin { [ 2 ( n 0 n p ) n 0 ] 1 / 2 z a } = a γ 0 γ p sin ( γ p z a ) ,
γ p = ( 2 n 0 n p n 0 ) 1 / 2 .
z a [ 2 ( n 0 n p ) n 0 ] 1 / 2 = π 2 .
P = z = 2 π a [ n 0 2 ( n 0 n p ) ] 1 / 2 = 2 π a γ p .

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