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Патент USA US3099712

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350-472
SR
OR
390999702.
1
July 30, 1963
J. BERGER
‘ 3,099,702
FIVE LENS OBJECTIVE
Filed Feb. 12, 1962
xzwz
United States Patent 0
3,099,702
CC
Patented July 30, 1963
1
Table
3,099,702
.
FIVE LENS OBJECTIVE
Johannes Berger, Heidenheim (Brenz), Wurttemberg,
Germany, assignor to Carl Zeiss, Heidenheim (Brenz),
Lenses
Wurttemherg, Germany
Radll
Axial separations
m
m
Filed Feb. 12, 1962, Ser. No. 172,829
Claims priority, application Germany Oct. 30, 1958
rt =+0.84527
1 Claim. (Cl. 88-57)
Lr ................ --
d1=0 .21437
1, 71300
53 ‘89
1, 71300
53 .89
1.69895
30.05
n ==+4 .9281
This application is a continuation-in-part application of 10
my copending application Ser. No. 848,867, ?led October
26, 1959, now abandoned.
The invention concerns objectives for taking photo
graphs as well as for projection, particularly for small
?lm projectors. It is the aim of the invention to pro 15
duce objectives for the said purpose which with a rela
tively large aperture ratio of 1:1.2 cover an angular ?eld
of 28° with good de?nition. Object of the invention is
an objective which consists of ?ve lenses the ?rst being
dz=0.00394
T: =+0.62932
Lu ............... ..
ds=0 .22669
1'4 =—-19.3384
d4=0,00000
rs = —19. 3384
Lnr .............. ._
v
ds=0.04928
n =+1 .1510
dc=0.05322
r7 = —14.2948
' ’*\' ‘a
Lrv ______________ ..
d1=0.16ll5
1.80518
Ta =+0.29781
25.46
.
da=0.l6263
"
re =+0.53342
Lv ............... ..
da=0.18234
1.74400
44.90
rm=—0.87006
_ a meniscus-shaped collective lens with its concave surface 20
turned towards the second lens, the said second lens being
NOTE.—S' =0.3l59.
an asymmetrical collective lens turning its surface of
smaller curvature towards the third lens, the said third lens
being an asymmetrical dispersive lens turning its surface
of stronger curvature towards the fourth lens which is 25
I claim:
also an asymmetrical dispersive lens turning its surface of
A
photographic objective consisting of ?ve lenses of
stronger curvature towards the ?fth lens while the ?fth
which the ?rst is a meniscus-shaped collective lens with
lens is a biconvex collective lens and in which objective
its concave surface turned towards the second lens, the
additionally the following conditions are simultaneously
30 said second lens being an asymmetrical collective lens tum
satis?ed:
(a) The sum of the air spaces between the individual
ing its surface of smaller curvature towards the third lens,
lenses is smaller than 30% but greater than 10% of
the said third lens being an asymmetrical dispersive lens
the overall length wherein the overalllength itself is
turning its surface of stronger curvature towards the fourth
greater than 80% of the focal length;
35 lens, the said fourth lens being also an asymmetrical dis
persive lens turning its surface of stronger curvature
towards the ?fth lens, and the said ?fth lens being a
biconvex collective lens, characterized by the combina
tion of the following features:
40
4
I
(a) the sum of the air spaces between the individual
lenses is smaller than 30% but greater than 10% of
the overall length wherein the overall length itself is
greater than 80% of the focal length;
45
wherein are designated by r the radii of the lens surfaces
and by n the refractive indices of the lens elements.
In the appended illustration the schematic design of an
objective according to the invention is represented in 50
section.
The appended table contains the design data for one.
embodiment of an objective according to the invention.
The table values are normalized for a focal length of 55
j=l.0.
|In the FIGURE and in the table there are designated:
4
By L, the lenses,
By r, the radii,
By d, the axial separations,
By nd, the refractive indices for the d-line of the spectrum,
By pd, the corresponding A'bbé numbers, and _
' By s’, the focal intercept.
60
and furthermore characterized in that its design data lie
so close to the values to be taken from the appended table
that none of the axial separations (d) differs by more than
“
'
-
3
"
8,099,702
‘
4
the values given in paa-antheses below the respective sepa»
- wherein are designated
ration value given in the following table:
Lenses '
Radll
Sepm‘i‘om
113
by L, the lenses,
by r,‘ the radii,
w
1311/)’
by d, the axial separations,
by nd, the refractive rndrces for the d-line of ‘the spec
5
r1 =+0 34521-1
L1-----
+0 .8435l7/f
Hum.
(1F?$6435! 1-7130‘) 53-89
.
n =+4.m1-1
(-0103)
.
-
by s’, the focal intercept.
—-0.144680/j
d’azfommujf
10
No references cited.
(-0.000)
LlI----
n =+0 .02032-1
.
d;=0.22869-f 1.71300 53.89
-0.03)
r5 =-19.33s4-r
'
_
+0 .036870/1
d4=0.00000
(+0.03)
(-0- )
d;=0.0492s-/ 1.69895 30.05
15
_
.
-0.03e143/1_
(+0 .03)
..
.
(-0.02)
r4=+1.1519-l
—0.606780//
d6=0.o5322~f
r1 =-14.294s-1
f
=
+0 20031 1
.
'
a
Lv..--
n =+0.53342-1
d1=0‘.l6115'f 1.80518 25.40
(+0.03)
4m)
da=0.16263-j
(+0.03)
-
_
_
.
25
(-0.03)
dn=0.18234-f 1.74400 44.90
.
+1.394773/f
.
_
-~
.
_
+0.855113/f 30
-
..v.~_..-.v._
.
-0.056327/f
2 703010/1
.
—0.03)
v
- .'
1
.v,_-
(-0.01)
(+0.03)
m=-0.s7000r
-
3
20
(+0.03)
LIV---
'
+1 .132969/1
(+0.03)
n =-19.33s4't
Lm---
-
‘by vd, the correspondrng Abbé numbers, and
-
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