#Equation for tefacton at aa Bpherical usfoe
L
L2
Litg is a Convex sphenical ace t
Cenhe f curvatue.
From fwe hing o Snells law
M(cin) M2 (sin)
closer to
For peripheral roysie if e
From
4B0c
exteo
angle
d BeI, exteror angle
from
, nea to P tLeen BOP s ariglt
angle dtriangle, ten
an o =
|tor mall Da tana
Simidarly, tanß = BP
PI
PI
md ton = BP
BP
pe BP
+ M2 PI Pe
+
PI Pe
distanee (opþo ste directia)
Litut to
Now oP = cbje et
disfanee
vatue = R
Radis s cur
Pe
)
-( e - )
R
Tus ls tu reqired
at curved/faheri cat sutaa,
L
L2
Litg is a Convex sphenical ace t
Cenhe f curvatue.
From fwe hing o Snells law
M(cin) M2 (sin)
closer to
For peripheral roysie if e
From
4B0c
exteo
angle
d BeI, exteror angle
from
, nea to P tLeen BOP s ariglt
angle dtriangle, ten
an o =
|tor mall Da tana
Simidarly, tanß = BP
PI
PI
md ton = BP
BP
pe BP
+ M2 PI Pe
+
PI Pe
distanee (opþo ste directia)
Litut to
Now oP = cbje et
disfanee
vatue = R
Radis s cur
Pe
)
-( e - )
R
Tus ls tu reqired
at curved/faheri cat sutaa,
