Energy transmission

Claim 2

Radiant energy transmission apparatus for use in an external radiant energy transmitting medium and operative in a concentrating mode, said apparatus comprising, transmission means including: (a) substantially concavely sloping radiant energy reflective wall means for guiding radiant energy, said wall means comprising means defining an energy inlet, (b) means, including said energy inlet, for defining a field of acceptance for radiant energy, and (c) a radiant energy refractive internal medium, said reflective wall means comprising an interface between said refractive internal medium and said external radiant energy transmitting medium, and said internal medium having a higher index of refraction for radiant energy then said external medium; and radiant energy trap means operatively associated with said reflective wall means for receiving radiant energy guided by said wall means; said concavely sloping reflective wall means having a profile curve sloped to assume the maximum possible slope consistent with totally internally reflecting onto said energy trap means the extremal energy rays which enter said energy inlet within said field of acceptance.

Claim 3

Apparatus according to claim 1 wherein said refractive internal medium is of substantially uniform refractive index.

Claim 4

Apparatus according to claim 1 wherein the ratio of the refractive index of said internal medium to said external medium is at least the square root of two.

Claim 5

Apparatus according to claim 1 wherein said concavely sloping reflective wall means comprise a pair of opposing longitudinally extending, energy reflecting and guiding surface means.

Claim 6

Apparatus according to claim 4 wherein said transmission means has an optical axis; said field of acceptance includes an angular acceptance; termini of said reflective wall means at said inlet define a longitudinally extending energy inlet having lateral edges; said energy trap means comprises a longitudinally extending energy outlet substantially co-planar with said energy inlet and having lateral edges; the profile curve of each said reflecting and guiding surface means is parabolic, having as its parabolic focus an opposing lateral edge of said energy outlet and as its parabolic axis a line forming an angle with said optical axis quantitatively equal to said angular acceptance; and the field of acceptance of said transmission means, when expressed in terms of optical direction cosines, is an ellipse of semi-minor axis equal to the sine of said angular acceptance and semi-major axis equal to one.

Claim 7

Apparatus according to claim 5 wherein the distance separating said energy inlet from said energy outlet is no more than one half the sum of the lateral dimensions of said inlet and outlet multiplied by the cotangent of said angular acceptance.

Claim 8

Apparatus according to claim 1 wherein said wall means are substantially conically shaped and define a substantially circular energy inlet and said energy trap means comprises a substantially circular energy outlet which is substantially co-planar with said energy inlet.

Claim 9

Apparatus according to claim 7 wherein said transmission means has an optical axis; said field of acceptance has an angular acceptance; the profile curve of said reflective wall means is parabolic, having as a parabolic focus an opposing edge of said outlet and having as a parabolic axis a line forming an angle with said optical axis equal to said angular acceptance; and the field of acceptance of said transmission means, expressed in optical direction cosines is a right circular cone.

Claim 10

Apparatus according to claim 1 wherein said energy trap means is external to said transmission means.

Claim 11

Apparatus according to claim 1 wherein said energy trap means comprises means for converting radiant energy into electrical energy.

Claim 12

Apparatus according to claim 1 further comprising a plurality of said transmission means.

Claim 13

Apparatus according to claim 1 wherein said energy inlet is optically coupled with a medium of refractive index identical to the medium external to said transmission means and comprising said reflective wall means.

Claim 14

Radiant energy transmission apparatus for use in an external radiant energy transmitting medium and operative in an emitting mode, said apparatus comprising: transmission means including, (a) substantially concavely sloping radiant energy reflective wall means for guiding radiant energy, said wall means comprising means defining an energy outlet, (b) means, including said energy outlet, for defining a field of emission for radiant energy, and (c) radiant energy refractive internal medium, said reflective wall means comprising an interface between said refractive internal medium and said external radiant energy transmitting medium, and said internal medium having a higher index of refraction for radiant energy than said external medium; and radiant energy source means operatively associated with said reflective wall means for emitting radiant energy guided by said wall means, said concavely sloping, reflective wall means including reflective means having a profile curve sloped to assume the maximum possible slope consistent with totally internally reflecting all energy rays from said energy source means through said energy outlet within said field of emission.

Claim 15

Radiant energy transmission apparatus for use in an external radiant energy transmitting medium and operative in an emitting mode, said apparatus comprising: transmission means including, (a) substantially concavely sloping radiant energy reflective wall means for guiding radiant energy, said wall means comprising means defining an energy outlet, (b) means, including said energy outlet, for defining a field of emission for radiant energy, and (c) radiant energy refractive internal medium, said reflective wall means comprising an interface between said refractive internal medium and said external radiant energy transmitting medium, and said internal medium having a higher index of refraction for radiant energy than said external medium; and radiant energy source means operatively associated with said reflective wall means for emitting radiant energy guided by said wall means, said concavely sloping, reflective wall means including reflective means having a profile curve sloped to assume the maximum possible slope consistent with totally internally reflecting all energy rays from said energy source means through said energy outlet within said field of emission.

Claim 16

Apparatus according to claim 13 wherein said refractive internal medium is of substantially uniform refractive index.

Claim 17

Apparatus according to claim 13 wherein the ratio of the refractive index of said internal medium to said external medium is at least the square root of two.

Claim 18

Apparatus according to claim 13 wherein said concavely sloping reflective wall means comprise a pair of opposing longitudinally extending, energy reflecting and guiding surface means.

Claim 19

Apparatus according to claim 16 wherein said transmission means has an optical axis; said field of emission includes an angular emission; termini of said reflective wall means at said outlet define a longitudinally extending energy outlet having lateral edges; said energy source means comprises a longitudinally extending energy source substantially co-planar with said energy outlet and having lateral edges; the profile curve of each said reflecting and guiding surface means is parabolic, having as its parabolic focus an opposing lateral edge of aid energy inlet and as its parabolic axis a line forming an angle with said optical axis quantitatively equal to said angular emission; and the field of emission of said transmission means, when expressed in terms of optical direction cosines, is an ellipse of semi-minor axis equal to the sine of said angular emission and semi-major axis equal to one.

Claim 20

Apparatus according to claim 17 wherein the distance separating said energy inlet from said energy outlet is no more than one half the sum of the lateral dimensions of said inlet and outlet multiplied by the cotangent of said angular acceptance.

Claim 21

Apparatus according to claim 13 wherein said wall means are substantially conically shaped and define a substantially circular energy outlet and wherein said energy trap means comprises a substantially circular energy inlet which is substantially co-planar with said energy outlet.

Claim 22

Apparatus according to claim 19 wherein said transmission means has an optical axis; said field of emission has an angular emission; the profile curve of said reflective wall means is parabolic, having as a parabolic focus an opposing edge of said inlet and having as a parabolic axis a line forming an angle with said optical axis equal to said angular emission; and the field of emission of said transmission means, expressed in optical direction cosines is a right circular cone.

Claim 23

Apparatus according to claim 13 wherein said energy source means is external to said transmission means.

Claim 24

Apparatus according to claim 13 wherein said energy source means comprises means for converting electrical energy into radiant energy.

Claim 25

Apparatus according to claim 13 further comprising a plurality of said transmission means.

Claim 26

Apparatus according to claim 13 wherein said energy outlet is optically coupled with a medium of refractive index identical to the medium external to said transmission means and comprising said reflective wall means.