50-mm f/5 achromatic doublet with 2° half-field of view.
This is a Fraunhoffer design.
*LENS DATA
achromatic doublet
SRF RADIUS THICKNESS APERTURE RADIUS GLASS SPE NOTE
OBJ -- 1.0000e+20 3.4921e+18 AIR
AST 30.658123 V 2.000000 5.100000 A N-BK7 C
2 -26.733948 V 0.100000 5.100000 AIR
3 -25.366250 V 1.000000 5.100000 N-SF10 C
4 -57.832251 S 48.484530 S 5.100000 AIR
IMS -- -- 1.746038 S
*SPECIAL DATA TYPES
NO SPECIAL DATA TYPES
*SOLVES
4 PU -0.100000 PY --
*PICKUPS
NO PICKUP DATA
*APERTURES
SRF TYPE APERTURE RADIUS
0 SPC 3.4921e+18
1 SPC 5.100000
2 SPC 5.100000
3 SPC 5.100000
4 SPC 5.100000
5 CMP 1.746038
*WAVELENGTHS
CURRENT WV1/WW1 WV2/WW2 WV3/WW3
1 0.587560 0.486130 0.656270
1.000000 1.000000 1.000000
*REFRACTIVE INDICES
SRF GLASS/CATALOG RN1 RN2 RN3 VNBR TCE
0 AIR 1.000000 1.000000 1.000000 -- --
1 N-BK7 1.516800 1.522376 1.514322 64.166410 71.000000
SCHOTT
2 AIR 1.000000 1.000000 1.000000 -- 236.000000
3 N-SF10 1.728277 1.746431 1.720906 28.532156 94.000000
SCHOTT
4 AIR 1.000000 1.000000 1.000000 -- 236.000000
5 IMAGE SURFACE
*INTERNAL TRANSMITTANCE (5 MM)
SRF GLASS/CATALOG ITN1 ITN2 ITN3
0 AIR 1.0 1.0 1.0
1 N-BK7 0.999 0.999 0.999
SCHOTT
2 AIR 1.0 1.0 1.0
3 N-SF10 0.995 0.987 0.995
SCHOTT
4 AIR 1.0 1.0 1.0
5 IMAGE SURFACE
*CONDITIONS: SYSTEM NOTES
6: geniierf_lt 0.05 25.0 1.00 -0.90 0.90 0.80 -0.80 0.80 0.70 1.0 1.0
*PARAXIAL SETUP OF LENS APERTURE Entrance beam radius: * 5.000000 Image axial ray slope: -0.100000 Object num. aperture: 5.0000e-20 F-number: 5.000000 Image num. aperture: 0.100000 Working F-number: 5.000000 FIELD Field angle: * 2.000000 Object height: -3.4921e+18 Gaussian image height: 1.746038 Chief ray ims height: 1.746038 CONJUGATES Object distance: 1.0000e+20 Srf 1 to prin. pt. 1: 0.503183 Gaussian image dist.: 48.484530 Srf 4 to prin. pt. 2: -1.515470 Overall lens length: 3.100000 Total track length: 1.0000e+20 Paraxial magnification: -5.0000e-19 Srf 4 to image srf: 48.484530 OTHER DATA Entrance pupil radius: 5.000000 Srf 1 to entrance pup.: -- Exit pupil radius: 5.050830 Srf 4 to exit pupil: -2.023768 Lagrange invariant: -0.174604 Petzval radius: -68.811775 Effective focal length: 50.000000 SPOT DIAGRAMS Aperture divisions: 17.030000 Gaussian apod. spec.: Off X 1/e^2 entr. irrad.: 1.000000 Y 1/e^2 entr. irrad.: 1.000000 *PARAXIAL CONSTANTS Effective focal length: 50.000000 Lateral magnification: -5.0000e-19 Numerical aperture: 0.100000 Gaussian image height: 1.746038 Working F-number: 5.000000 Petzval radius: -68.811775 Lagrange invariant: -0.174604
*PARAXIAL TRACE SRF PY PU PI PYC PUC PIC 0 -- 5.0000e-20 5.0000e-20 -3.4921e+18 0.034921 0.034921 1 5.000000 -0.055567 0.163089 -- 0.023023 0.034921 2 4.888866 -0.178792 -0.238438 0.046045 0.034031 0.021300 3 4.870986 -0.022533 -0.370818 0.049448 0.020512 0.032081 4 4.848453 -0.100000 -0.106370 0.069960 0.034569 0.019302 5 -- -0.100000 -0.100000 1.746038 0.034569 0.034569
*SEIDEL WAVEFRONT ABERRATION COEFFICIENTS - WAVELENGTH 1 COEFFICIENTS IN WAVELENGTHS SRF W040 W131 W222 W220 W311 1 1.036495 0.887741 0.190084 0.239202 0.102436 2 19.339480 -6.910582 0.617340 0.473990 -0.084686 3 -23.619010 8.173576 -0.707135 -0.569055 0.098463 4 3.031474 -2.200409 0.399294 0.294164 -0.106760 SUM -0.211561 -0.049674 0.499583 0.438301 0.009454
Maintained by John Loomis, last updated 14 May 2009