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Text File  |  1993-12-04  |  2KB  |  18 lines

  1. "AST1CAL3 EQUATION VARIABLE","12-04-1993","14:46:58"
  2. "FOCAL_LENGTH=F+(1-SIGN(ABS(F)))*R1*R2/(R2-R1)/(N[L]/(N[M]+1E-30)-1) INDEX_L=N[L]+(1-SIGN(ABS(N[L])))*N[M]*(1+R1*R2/(F+1E-30)/(R2-R1+1E-30)) INDEX_M=N[M]+(1-SIGN(ABS(N[M])))*N[L]/(1+R1*R2/(F+1E-30)/(R2-R1+1E-30)) RADIUS_1=R1+(1-SIGN(ABS(R1)))*(N[L]/(N[M]+1E-30)-1)*F*R2/(R2+(N[L]/(N[M]+1E-30)-1)*F) RADIUS_2=R2+(1-SIGN(ABS(R2)))*(N[L]/(N[M]+1E-30)-1)*F*R1/((N[L]/(N[M]+1E-30)-1)*F-R1)"
  3. "LENS EQUATION, FOCAL LENGTH vs INDEX REFRACTION, RADIUS CURV.  A diagram of the Problem is shown below. Surface is represented by 's'.                            · s ·                    R1 radius at center C1                       ray   · °s·    s °  ·              R2 radius at center C2                         · °  s    ° ·  s    °  ·         V1 vertex of sphere 1                     · °      s     R1   °s ·       °  ·   V2 vertex of sphere 2                 o······o·····sV1·······V2s····°··o········o  S source point                     S      C2 ° ·s       n[l]s       C1       P  P image point                                    s° ·R2    s                    S[O] Source distance                     n[m]      s  ° ·s                      S[I] Image distance                                   s                       |V2-V1|<< S[O] or S[I].              |--------S[O]------|-----------S[I]-------|  (c) Copyright PCSCC, Inc., 1993  Sign Convention:  S[O] + means its left of vertex V2      focal_length < 0                        S[I] + means its right  of vertex V1       means                                R?   + means center C is right of V     diverging lens.       *** Answer(s) to problem ***                                                    Variables are set to proper values at entry.  Note, value of unknown should be  set to 0.0.  Enter any 4 of 5 knowns, program calculates missing (=0) one.      Focal length = 21.24.  (b) Positive FL means ray coverge toward optical axis.                  ||A bi-concave (R1=-8 cm, R2=12 cm) thin lens is made of         hepa-fluor (Ng=1.37) and is immersed in solvent alpha-k-1 (Nm=1.77). (a) What isits focal length? (b) is it converging or diverging?                                  Type comma key to see answer. Type (F2) to return to application file."
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  7. 1.77,0,""
  8. -8,0,""
  9. 12,0,""
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  11. 12,0,""
  12. -8,0,""
  13. 1.77,0,""
  14. 1.37,0,""
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