minor changes - added Sellmeier's coefficients for future

README.md

-optical-design
+optical-design-viewer
 ==============
 
 Show, view and edit prescriptions in a web browser (preferably chromium)

lens_design.js

@@ -932,22 +932,22 @@ function find_aperture_stop_ray(x,y,alpha,height,dalpha,old_cv,limit){
 
 
 var Glass = {
-  "BAF51"    : {n:1.652242},
-  "BASF1"    : {n:1.626061},
-  "BK7"      : {n:1.516800},
+  "BAF51"    : {n:1.652242,B1:1.51503623,B2:0.153621958,B3:1.15427909,C1:0.00942734715,C2:0.04308265,C3:124.889868},//barium flint
+  "BASF1"    : {n:1.626061},//barium dense flint
+  "BK7"      : {n:1.516800,B1:1.03961212,B2:0.231792344,B3:1.01046945,C1:0.00600069867,C2:0.0200179144,C3:103.560653},//borosilicate crown
   "K50"      : {n:1.522572},
-  "LAK11"    : {n:1.658302},
-  "LAK21"    : {n:1.640495},
+  "LAK11"    : {n:1.658302},//lanthanum crown
+  "LAK21"    : {n:1.640495,B1:1.22718116,B2:0.420783743,B3:1.01284843,C1:0.00602075682,C2:0.0196862889,C3:88.4370099},//lanthanum crown
   "LASF14A"  : {n:1.822230},
-  "N-BK7"    : {n:1.516800},
-  "N-FK51"   : {n:1.486561},
-  "N-FK51A"  : {n:1.486560},
+  "N-BK7"    : {n:1.516800,B1:1.03961212,B2:0.231792344,B3:1.01046945,C1:0.00600069867,C2:0.0200179144,C3:103.560653},
+  "N-FK51"   : {n:1.486561},//fluorite crown
+  "N-FK51A"  : {n:1.486560,B1:0.971247817,B2:0.216901417,B3:0.904651666,C1:0.00472301995,C2:0.0153575612,C3:168.68133},//fluorite crown
   "N-SK15"   : {n:1.622960},
-  "N-ZK7"    : {n:1.508470},
+  "N-ZK7"    : {n:1.508470,B1:1.07715032,B2:0.168079109,B3:0.851889892,C1:0.00676601657,C2:0.0230642817,C3:89.0498778},
   "P-LAK35"  : {n:1.693500},
   "PSK52"    : {n:1.603101},
   "SF57"     : {n:1.846660},
   "SF58"     : {n:1.917613},
   "SF6HT"    : {n:1.805180},
-  "SK16"     : {n:1.620410}
+  "SK16"     : {n:1.620410,B1:1.34317774,B2:0.241144399,B3:0.994317969,C1:0.00704687339,C2:0.229005,C3:92.7508526}
 }
\ No newline at end of file