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# Title: Leibniz-Handschriften zur Optik und Dioptrik LH 37, 2
# Folio 130r, page id 00068531:0259
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Problemata catoptica et dioptrica primara
ita facile solvuntur meo invento novo
Quaeritur superficies quae omnes radio ex
puncto dato ad datam superficiem vinientes
atque inde reflexos recipiat atque ad unum
rursus punctum reflectat ad datum punctum
datum
sit punctum radians 
datura
punctum in quo omnes
radi, A ab A emissi
data
et a superfice C(C)
ex reflexi iterum
colligi debent, secundo
reflexi a superficie F(F
et t linea quae quaentur
Haec ta invenietur lineat
in qua coeant omnes rudii ACE
reflexi. et jam linea E (E)
et puncto B generatoribus, recta BFE affucita
eaquon filo) qualrta cunque describatur linea F(F) ea erit
assunta
quaesite, et patet infinitas F(F) posse salisfacere
prout sumitur filum longius
putet etiam in failor totam I
+eC AC + CE + EF + F B
core aequalem
illipsis focis E et A
scripta cuvam isin C osculatur
pocu
Cr
semper
fila ACE
et Ellipsis focis E et B filo BFC descri–
pla et curvamF osculatur
Eodem modo, pir Hyperbolis procedi
et paraboli sa
Aepam
nallislocu cum ibpar
et th perbolarum
nambolis locus est cum radii AC vel BF
cum
 sunt paralleli, seu cum focus alt A vel B
salterater vel uteque infigite abes
Quoniam edem Ellipses et Hyperborae
etiam problemata dioptri ca solvunt, hinc
linea
CC et FC dioptricis feron
et