Abstract

Details of two bilateral slits designed for use in an infra-red spectrograph are described. The widths of the slit openings may be continuously varied from 0 to 4 millimeters in one case and from 0 to 12 millimeters in the second case. The designs permit reproducible fine control of these widths.

Correct formulae for curvature of prism and grating images are given without derivation.

© 1946 Optical Society of America

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References

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  1. E. B. Baker and C. D. Robb, Rev. Sci. Inst. 14, 359 (1943); R. B. Barnes and R. R. Brattain, Rev. Sci. Inst. 6, 83 (1935); J. E. Sears, J. Sci. Inst. 10, 367 (1933); J. Strong, Rev. Sci. Inst. 12, 213 (1941).
    [Crossref]
  2. R. A. Oetjen, J. Opt. Soc. Am. 35, 743 (1945).
    [Crossref] [PubMed]
  3. H. Kayser, Handbuch der Spectroscopie (S. Hirzel, Leipzig1900), Vol. I, pp. 318–321.
  4. M. von Rohr, Geometrical Investigation of the Formation of Images in Optical Instruments (His Majesty’s Stationery Office, London, 1920), pp. 433–438.
  5. H. M. Randall and F. A. Firestone, Rev. Sci. Inst. 9, 404 (1938).
    [Crossref]
  6. R. Minkowski, Astrophys. J. 96, 306 (1942).
    [Crossref]
  7. F. A. Firestone, private communication.

1945 (1)

R. A. Oetjen, J. Opt. Soc. Am. 35, 743 (1945).
[Crossref] [PubMed]

1943 (1)

E. B. Baker and C. D. Robb, Rev. Sci. Inst. 14, 359 (1943); R. B. Barnes and R. R. Brattain, Rev. Sci. Inst. 6, 83 (1935); J. E. Sears, J. Sci. Inst. 10, 367 (1933); J. Strong, Rev. Sci. Inst. 12, 213 (1941).
[Crossref]

1942 (1)

R. Minkowski, Astrophys. J. 96, 306 (1942).
[Crossref]

1938 (1)

H. M. Randall and F. A. Firestone, Rev. Sci. Inst. 9, 404 (1938).
[Crossref]

Baker, E. B.

E. B. Baker and C. D. Robb, Rev. Sci. Inst. 14, 359 (1943); R. B. Barnes and R. R. Brattain, Rev. Sci. Inst. 6, 83 (1935); J. E. Sears, J. Sci. Inst. 10, 367 (1933); J. Strong, Rev. Sci. Inst. 12, 213 (1941).
[Crossref]

Firestone, F. A.

H. M. Randall and F. A. Firestone, Rev. Sci. Inst. 9, 404 (1938).
[Crossref]

F. A. Firestone, private communication.

Kayser, H.

H. Kayser, Handbuch der Spectroscopie (S. Hirzel, Leipzig1900), Vol. I, pp. 318–321.

Minkowski, R.

R. Minkowski, Astrophys. J. 96, 306 (1942).
[Crossref]

Oetjen, R. A.

R. A. Oetjen, J. Opt. Soc. Am. 35, 743 (1945).
[Crossref] [PubMed]

Randall, H. M.

H. M. Randall and F. A. Firestone, Rev. Sci. Inst. 9, 404 (1938).
[Crossref]

Robb, C. D.

E. B. Baker and C. D. Robb, Rev. Sci. Inst. 14, 359 (1943); R. B. Barnes and R. R. Brattain, Rev. Sci. Inst. 6, 83 (1935); J. E. Sears, J. Sci. Inst. 10, 367 (1933); J. Strong, Rev. Sci. Inst. 12, 213 (1941).
[Crossref]

von Rohr, M.

M. von Rohr, Geometrical Investigation of the Formation of Images in Optical Instruments (His Majesty’s Stationery Office, London, 1920), pp. 433–438.

Astrophys. J. (1)

R. Minkowski, Astrophys. J. 96, 306 (1942).
[Crossref]

J. Opt. Soc. Am. (1)

R. A. Oetjen, J. Opt. Soc. Am. 35, 743 (1945).
[Crossref] [PubMed]

Rev. Sci. Inst. (2)

E. B. Baker and C. D. Robb, Rev. Sci. Inst. 14, 359 (1943); R. B. Barnes and R. R. Brattain, Rev. Sci. Inst. 6, 83 (1935); J. E. Sears, J. Sci. Inst. 10, 367 (1933); J. Strong, Rev. Sci. Inst. 12, 213 (1941).
[Crossref]

H. M. Randall and F. A. Firestone, Rev. Sci. Inst. 9, 404 (1938).
[Crossref]

Other (3)

H. Kayser, Handbuch der Spectroscopie (S. Hirzel, Leipzig1900), Vol. I, pp. 318–321.

M. von Rohr, Geometrical Investigation of the Formation of Images in Optical Instruments (His Majesty’s Stationery Office, London, 1920), pp. 433–438.

F. A. Firestone, private communication.

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Figures (5)

Fig. 1
Fig. 1

Bilateral slit whose jaws are guided by inclined ways. View of side upon which incident radiation falls.

Fig. 2
Fig. 2

Rear view of slit whose jaws are guided by inclined ways.

Fig. 3
Fig. 3

(A) Shape of bottom portion of a slit jaw guided by an inclined way. (B) Diagram showing the components of the displacement of a slit jaw guided by an inclined way.

Fig. 4
Fig. 4

Bilateral slit whose width of opening is controlled by a double screw. View of side upon which incident radiation falls.

Fig. 5
Fig. 5

Bilateral slit whose width of opening is controlled by a double screw. Rear view of upper portion with cover removed.

Tables (2)

Tables Icon

Table I Comparison of calculated and observed widths of openings in three slits of the type whose jaws are guided by inclined ways.

Tables Icon

Table II Comparison of calculated and observed widths of openings of a slit whose width is determined by a double screw.

Equations (6)

Equations on this page are rendered with MathJax. Learn more.

x = 2 d tan θ / ( 1 + cot ϕ tan θ ) .
1 2 x = a b ,
a = d tan θ ,
b = c tan θ = 1 2 x cot ϕ tan θ .
R = n f ( 1 n 2 sin 2 1 2 A ) 1 2 2 ( n 2 1 ) sin 1 2 A = n 2 f 2 ( n 2 1 ) cot i ,
R = ( f / 2 ) cot i ,