Unsymmetrical wide angle lens

Claim 2

A wide angle lens comprising 1. at least five components air spaced from each other and containing at least eight individual lens elements, 2. said components including two components each having, as a whole, a converging action, said two converging components being axially separated from each other by an air space in which a diaphragm may be placed, 3. two meniscus components axially separated from each other by an air space constituting a first air lens, the two meniscus components in combination with each other having a dispersing action, 4. said two meniscus components both having front surfaces which are convex toward the front, 5. the rear one of said two meniscus components being axially separated from the front one of said two converging components by an air space constituting a second air lens, 6. a negative component spaced axially behind the rear one of said two converging components, said negative component having a rear surface which is convex toward the rear, 7. the front one of said two converging components having at least two individual lens elements, 8. the rear one of said two converging components having at least two individual lens elements and at least one cemented surface which is convex toward the front, said lens being characterized by the fact that a. said two meniscus components with diverging action are so dimensioned that their mutual refractive power distribution number is substantially within the limits of +1.5977 and -1.3573, and b. the surfaces bounding said first air lens and said second air lens are so dimensioned that the refractive power distribution number of these two air lenses is within the limits of +0.0865 and -1.7466.

Claim 3

A lens as defined in claim 1, wherein said two meniscus components in combination with each other have a combined refractive power with a negative value within the limits of 1.1567 and 0.2494 times the equivalent refractive power of the entire lens.

Claim 4

A lens as defined in claim 1, wherein the front one of said two converging components has a rear lens element with an index of refraction lower than that of the lens element next in front of it.

Claim 5

A lens as defined in claim 1, wherein the rear one of said two converging components has a lens element on the forward side of said cemented surface with an index of refraction lower than that of the lens element on the rear side of said cemented surface.

Claim 6

A lens as defined in claim 1, wherein the characteristics of the lens components and their spatial relationship to each other are substantially as indicated below: ______________________________________ F = 1.00000 f/6.3 2ω.sub.o = 62° s'.sub.∞ = + 0.34985 ______________________________________ F ##STR31## ##STR32## ##STR33## ##STR34## ##STR35## ______________________________________

Claim 7

all linear dimensions being expressed in proportion to the equivalent focal length of the entire lens system considered as unity, the symbols having the meanings explained in the foregoing specification.

Claim 8

all linear dimensions being expressed in proportion to the equivalent focal length of the entire lens system considered as unity, the symbols having the meanings explained in the foregoing specification.

Claim 9

A lens as defined in claim 1, wherein the characteristics of the lens components and their spatial relationship to each other are substantially as indicated below: ______________________________________ F = 1.00000 f/6.0 2ω.sub.o = 62° s'.sub.∞ = + 0.46328 ______________________________________ F R.sub.1 = + 0.6600 AIL.sub.1 d.sub.1 = 0.0500n.sub.1 = 1.488 R'.sub.1 = + 0.5200 s.sub.12 = 0.1050 (α) R.sub.2 = + 1.7500 BIIL.sub.2 d.sub.2 = 0.0300n.sub.2 = 1.488 R'.sub.2 = + 0.4300 s.sub.23 = 0.4880 (β) ##STR36## CS = s.sub.34 = 0.0460 ##STR37## s.sub.45 = 0.3370 (γ) R.sub.5 = - 0.3510 EVL.sub.5 d.sub.5 = 0.33018n.sub.5 = 1.621 R'.sub.5 = - 0.6334 ______________________________________

Claim 10

all linear dimensions being expressed in proportion to the equivalent focal length of the entire lens system considered as unity, the symbols having the meanings explained in the foregoing specification.

Claim 11

all linear dimensions being expressed in proportion to the equivalent focal length of the entire lens system considered as unity, the symbols having the meanings explained in the foregoing specification.

Claim 12

A lens as defined in claim 1, wherein the characteristics of the lens components and their spatial relationship to each other are substantially as indicated below: ______________________________________ F = 1.00000 f/5.8 2ω.sub.o = 62° s'.sub.∞ = + 0.34576 ______________________________________ F R.sub.1 = + 0.72899 AIL.sub.1 d.sub.1 = 0.105082 n.sub.1 = 1.64213 R'.sub.1 = + 0.70971 s.sub.12 = 0.378494 (α) R.sub.2 = + 2.04718 BIIL.sub.2 d.sub.2 = 0.059348n.sub.2 = 1.47104 R'.sub.2 = + 0.63367 s.sub.23 = 1.158684 (β) ##STR38## CS = s.sub.34 = 0.058106 ##STR39## s.sub.45 = 0.326201 (γ) R.sub.5 = - 0.38531 EVL.sub.5 d.sub.5 = 0.142792n.sub.5 = 1.46125 R'.sub.5 = - 0.90547 ______________________________________

Claim 13

all linear dimensions being expressed in proportion to the equivalent focal length of the entire lens system considered as unity, the symbols having the meanings explained in the foregoing specification.

Claim 14

all linear dimensions being expressed in proportion to the equivalent focal length of the entire lens system considered as unity, the symbols having the meanings explained in the foregoing specification.

Claim 15

A lens as defined in claim 1, wherein the characteristics of the lens components and their spatial relationship to each other are substantially as indicated below: ______________________________________ F = 1.00000 f/4.8 2ω.sub.o = 92° s'.sub.∞ = + 0.16667 ______________________________________ F R.sub.1 = + 1.0650 AIL.sub.1 d.sub.1 = 0.0500n.sub.1 = 1.659 R'.sub.1 = + 0.5300 s.sub.12 = 0.3000 (α) R.sub.2 = + 0.8050 BIIL.sub.2 d.sub.2 = 0.2850n.sub.2 = 1.785 R'.sub.2 = + 0.8750 s.sub.23 = 0.3000 (β) ##STR40## CS = s.sub.34 = 0.0950 ##STR41## s.sub.45 = 0.6280 (γ) R.sub.5 = - 0.4670 EVL.sub.5 d.sub.5 = 0.1430n.sub.5 = 1.639 R'.sub.5 = - 1.58825 ______________________________________

Claim 16

all linear dimensions being expressed in proportion to the equivalent focal length of the entire lens system considered as unity, the symbols having the meanings explained in the foregoing specification.

Claim 17

all linear dimensions being expressed in proportion to the equivalent focal length of the entire lens system considered as unity, the symbols having the meanings explained in the foregoing specification.

Claim 18

A lens as defined in claim 1, wherein the characteristics of the lens components and their spatial relationship to each other are substantially as indicated below: ______________________________________ F = 1.00000 f/5.6 2ω.sub.o = 62° s'.sub.∞ = + 0.34332F ______________________________________ R.sub.1 = + 0.60641 AIL.sub.1 d.sub.1 = 0.137686n.sub.1 = 1.50049 R'.sub.1 = + 0.50588 s.sub.12 = 0.236963 (α) R.sub.2 = + 6.17438 BIIL.sub.2 d.sub.2 = 0.033838n.sub.2 = 1.46671 R'.sub.2 = + 0.52817 s.sub.23 = 0.475467 (β) ##STR42## CS = s.sub.34 = 0.123972 ##STR43## s.sub.45 = 0.246255 (γ) R.sub.5 = - 0.37223 EVL.sub.5 d.sub.5 = 0.111302n.sub.5 = 1.62417 R'.sub.5 = - 0.74601 ______________________________________

Claim 19

all linear dimensions being expressed in proportion to the equivalent focal length of the entire lens system considered as unity, the symbols having the meanings explained in the foregoing specification.

Claim 20

all linear dimensions being expressed in proportion to the equivalent focal length of the entire lens system considered as unity, the symbols having the meanings explained in the foregoing specification.

Claim 21

A lens as defined in claim 1, wherein the characteristics of the lens components and their spatial relationship to each other are substantially as indicated below: ______________________________________ F = 1.00000 f/5.6 2ω.sub.o = 63° s'.sub.∞ = + 0.29213 ______________________________________ F R.sub.1 = + 0.64844 AIL.sub.1 d.sub.1 = 0.083260n.sub.1 = 1.62787 R'.sub.1 = + 0.60824 s.sub.12 = 0.274528 (α) R.sub.2 = + 2.62643 BIIL.sub.2 d.sub.2 = 0.044723n.sub.2 = 1.48677 R'.sub.2 = + 0.60573 s.sub.23 = 0.755528 (β) ##STR44## CS = s.sub.34 = 0.064427 ##STR45## s.sub.45 = 0.290553 (γ) R.sub.5 = - 0.36782 EVL.sub.5 d.sub. 5 = 0.210300n.sub.5 = 1.46068 R'.sub.5 = - 1.06346 ______________________________________

Claim 22

all linear dimensions being expressed in proportion to the equivalent focal length of the entire lens system considered as unity, the symbols having the meanings explained in the foregoing specification.

Claim 23

all linear dimensions being expressed in proportion to the equivalent focal length of the entire lens system considered as unity, the symbols having the meanings explained in the foregoing specification.

Claim 24

A lens as defined in claim 1, wherein the characteristics of the lens components and their spatial relationship to each other are substantially as indicated below: ______________________________________ F = 1.00000 f/5.6 2ω.sub.o = 66° s'.sub.∞ = + 0.30206 ______________________________________ F n.sub.d / ν.sub.d R.sub.1 = + 0.75149 AIL.sub.1 d.sub.1 = 0.1135111.64769/33.86 R'.sub.1 = + 0.73007 s.sub.12 = 0.272687 (α) R.sub.2 = + 2.27575 BIIL.sub.2 d.sub.2 = 0.0469701.50847/61.19 R'.sub.2 = + 0.58415 s.sub.23 = 0.774483 (β) ##STR46## CS = s.sub.34 = 0.076979 ##STR47## s.sub.45 = 0.278428 (γ) -R.sub.5 = - 0.35815 EVL.sub.5 d.sub.5 = 0.2105821.46450/65.70 R'.sub.5 = - 0.98076 ______________________________________

Claim 25

all linear dimensions being expressed in proportion to the equivalent focal length of the entire lens system considered as unity, the symbols having the meanings explained in the foregoing specification.

Claim 26

all linear dimensions being expressed in proportion to the equivalent focal length of the entire lens system considered as unity, the symbols having the meanings explained in the foregoing specification.

Claim 27

A lens as defined in claim 1, wherein the characteristics of the lens components and their spatial relationship to each other are substantially as indicated below: ______________________________________ F = 1.00000 f/4.6 2ω.sub.o = 92° s'.sub.∞ = + 0.19685 ______________________________________ F R.sub.1 = + 1.66676 AIL.sub.1 d.sub.1 = 0.076352n.sub.1 = 1.51264 R'.sub.1 = + 0.58362 s.sub.12 = 0.351418 (α) R.sub.2 = + 0.81023 BIIL.sub.2 d.sub.2 = 0.268400n.sub.2 = 1.80139 R'.sub.2 = + 1.00036 s.sub.23 = 0.255526 (β) ##STR48## CS = s.sub.34 = 0.125000 ##STR49## s.sub.45 = 0.549608 (γ) R.sub.5 = - 0.50039 EVL.sub.5 d.sub.5 = 0.059935n.sub.5 = 1.58903 R'.sub.5 = - 2.07556 ______________________________________

Claim 28

all linear dimensions being expressed in proportion to the equivalent focal length of the entire lens system considered as unity, the symbols having the meanings explained in the foregoing specification.

Claim 29

all linear dimensions being expressed in proportion to the equivalent focal length of the entire lens system considered as unity, the symbols having the meanings explained in the foregoing specification.

Claim 30

A lens as defined in claim 1, wherein the characteristics of the lens components and their spatial relationship to each other are substantially as indicated below: ______________________________________ F = 1.00000 f/6.0 2ω.sub.o = 62° s'.sub.∞ = + 0.50401 ______________________________________ F n.sub.d /ν.sub.d R.sub.1 = + 0.62490 AIL.sub.1 d.sub.1 = 0.0468751.48749/70.45 R'.sub.1 = + 0.49801 s.sub.12 = 0.117122 (α) R.sub.2 = +1.74276 BIIL.sub.2 d.sub.2 = 0.0295181.48749/70.45 R'.sub.2 = + 0.40190 s.sub.23 = 0.490157 (β) ##STR50## CS = s.sub.34 = 0.062642 ##STR51## s.sub.45 = 0.337289 (γ) R.sub.5 = - 0.32745 EVL.sub.5 d.sub.5 = 0.0251421.62041/60.29 R'.sub.5 = - 0.48265 ______________________________________

Claim 31

all linear dimensions being expressed in proportion to the equivalent focal length of the entire lens system considered as unity, the symbols having the meanings explained in the foregoing specification.

Claim 32

all linear dimensions being expressed in proportion to the equivalent focal length of the entire lens system considered as unity, the symbols having the meanings explained in the foregoing specification.

Claim 33

A lens as defined in claim 1, wherein the characteristics of the lens components and their spatial relationship to each other are substantially as indicated below: ______________________________________ F = 1.00000 f/5.6 2ω.sub.o = 62° s'.sub.∞ = + 0.46346 ______________________________________ F n.sub.d /v.sub.d R.sub.1 = + 0.62385 AIL.sub.1 d.sub.1 = 0.0499051.48749/70.45 R'.sub.1 = + 0.54023 s.sub.12 = 0.108482 (α) R.sub.2 = + 1.78392 BIIL.sub.2 d.sub.2 = 0.0284701.48749/70.45 R'.sub.2 = + 0.40190 s.sub.23 = 0.527684 (β) ##STR52## CS = s.sub.34 = 0.045814 ##STR53## s.sub.45 = 0.336572 (γ) R.sub.5 = 0.35081 EVL.sub.5 d.sub.5 = 0.0323971.62041/60.29 R'.sub.5 = - 0.63291 ______________________________________

Claim 34

all linear dimensions being expressed in proportion to the equivalent focal length of the entire lens system considered as unity, the symbols having the meanings explained in the foregoing specification.

Claim 35

all linear dimensions being expressed in proportion to the equivalent focal length of the entire lens system considered as unity, the symbols having the meanings explained in the foregoing specification.

Claim 36

A lens as defined in claim 1, wherein the characteristics of the lens components and their spatial relationship to each other are substantially as indicated below: ______________________________________ F = 1.00000 f/5.6 2ω.sub.o = 63° s'.sub.∞ = + 0.35027 ______________________________________ F n.sub.d /ν.sub.d R.sub.1 = + 0.76434 AIL.sub.1 d.sub.1 = 0.1286181.64769/33.86 R'.sub.1 = + 0.73737 s.sub.12 = 0.257982 (α) R.sub.2 = + 2.52384 BIIL.sub.2 d.sub.2 = 0.0447801.51454/54.68 R'.sub.2 = + 0.59413 s.sub.23 = 0.772950 (β) ##STR54## CS = s.sub.34 = 0.075628 ##STR55## s.sub.45 = 0.297288 (γ) R.sub.5 = - 0.36167 EVL.sub.5 d.sub.5 = 0.1373251.46450/65.70 R'.sub.5 = - 0.85768 ______________________________________

Claim 37

all linear dimensions being expressed in proportion to the equivalent focal length of the entire lens system considered as unity, the symbols having the meanings explained in the foregoing specification.

Claim 38

all linear dimensions being expressed in proportion to the equivalent focal length of the entire lens system considered as unity, the symbols having the meanings explained in the foregoing specification.

Claim 39

A lens as defined in claim 1, wherein the characteristics of the lens components and their spatial relationship to each other are substantially as indicated below: ______________________________________ F = 1.00000 f/4.7 2ω.sub.o = 92° s'.sub.∞ = + 0.16614 ______________________________________ F n.sub.d /ν.sub.d R.sub.1 = + 1.04603 AIL.sub.1 d.sub.1 = 0.0605771.65844/50.88 R'.sub.1 = + 0.54347 s.sub.12 = 0.328699 (α) R.sub.2 = + 0.83689 BIIL.sub.2 d.sub.2 = 0.2758911.78470/26.08 R'.sub.2 = + 0.87379 s.sub.23 = 0.295776 (β) ##STR56## CS = s.sub.34 = 0.096397 ##STR57## s.sub.45 = 0.628162 (γ) R.sub.5 = - 0.46722 EVL.sub.5 d.sub.5 = 0.1438061.63854/55.38 R'.sub.5 = - 1.58797 ______________________________________

Claim 40

all linear dimensions being expressed in proportion to the equivalent focal length of the entire lens system considered as unity, the symbols having the meanings explained in the foregoing specification.

Claim 41

all linear dimensions being expressed in proportion to the equivalent focal length of the entire lens system considered as unity, the symbols having the meanings explained in the foregoing specification.

Claim 42

A lens as defined in claim 1, wherein the characteristics of the lens components and their spatial relationship to each other are substantially as indicated below: ______________________________________ F = 1.00000 f/4.5 2ω.sub.0 = 92° s'.sub.∞ = + 0.27371 ______________________________________ F n.sub.d /v.sub.d R.sub.1 = + 0.81734 AIL.sub.1 d.sub.1 = 0.0508841.63854/55.38 R'.sub.1 = + 0.46958 s.sub.12 = 0.420381 (α) R.sub.2 = + 0.61730 BIIL.sub.2 d.sub.2 = 0.3101321.62004/36.37 R'.sub.2 = + 0.46627 s.sub.23 = 0.076848 (β) ##STR58## CS = s.sub.34 = 0.060930 ##STR59## s.sub.45 = 0.418163 (γ) R.sub.5 = - 0.44657 EVL.sub.5 d.sub.5 = 0.0502321.51009/63.52 R'.sub.5 = - 1.23986 ______________________________________

Claim 43

all linear dimensions being expressed in proportion to the equivalent focal length of the entire lens system considered as unity, the symbols having the meanings explained in the foregoing specification.

Claim 44

all linear dimensions being expressed in proportion to the equivalent focal length of the entire lens system considered as unity, the symbols having the meanings explained in the foregoing specification.

Claim 45

A lens as defined in claim 1, wherein the characteristics of the lens components and their spatial relationship to each other are substantially as indicated below: ______________________________________ F = 1.00000 f/4.5 2ω.sub.o = 93° s'.sub.∞ = + 0.17408 ______________________________________ F n.sub.d /v.sub.d R.sub.1 = + 1.12715 AIL.sub.1 d.sub.1 = 0.0840561.65844/50.88 R'.sub.1 = + 0.56162 s.sub.12 = 0.374925 (α) R.sub.2 = + 1.00544 BIIL.sub.2 d.sub.2 = 0.3076671.78470/26.08 R'.sub.2 = + 1.17681 s.sub.23 = 0.278572 (β) ##STR60## CS = s.sub.34 = 0.086615 ##STR61## s.sub.45 = 0.601778 (γ) R.sub.5 = - 0.44655 E VL.sub.5 d.sub.5 = 0.1721411.63854/55.38 R'.sub.5 = - 1.51703 ______________________________________

Claim 46

all linear dimensions being expressed in proportion to the equivalent focal length of the entire lens system considered as unity, the symbols having the meanings explained in the foregoing specification.

Claim 47

all linear dimensions being expressed in proportion to the equivalent focal length of the entire lens system considered as unity, the symbols having the meanings explained in the foregoing specification.