US2008166040A1PendingUtilityA1

Apparatus, and Corresponding Method, For Detecting the Anatomic Shape of a Subject

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Assignee: DELTA R & S S R LPriority: Feb 28, 2005Filed: Feb 24, 2006Published: Jul 10, 2008
Est. expiryFeb 28, 2025(expired)· nominal 20-yr term from priority
Inventors:Giancarlo Monzardo
H10H 20/856H10H 20/855C03B 20/00G02B 6/02G02B 6/00G02B 6/0068G02B 6/002G02B 6/0021G02B 6/0073G02B 6/0046
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PatentIndex Score
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Claims

Abstract

A light guide is provided. The light guide has an uneven light input face and even side faces, which are arranged directly downstream of the light input face. Furthermore, an optoelectronic component with such a light guide is provided.

Claims

exact text as granted — not AI-modified
1 . Light guide having
 an uneven light input face and   even side faces, which are arranged directly downstream of the light input face.   
   
   
       2 . Light guide according to  claim 1 , in which the cross-sectional area of the light guide increases with the distance from the light input face. 
   
   
       3 . Light guide according to  claim 2 , in which the cross-sectional area of the light guide increases more in a first portion than in a second portion of the light guide. 
   
   
       4 . Light guide according to  claim 3 , in which the first portion is arranged directly downstream of the light input face. 
   
   
       5 . Light guide according to  claim 3 , in which the side faces of the light guide in the first portion each form an angle(φ 1 ) with the cross-sectional area of the light guide. 
   
   
       6 . Light guide according to  claim 4 , in which the side faces ( 5 ) of the second portion each form a second angles (φ 2 ) with the cross-sectional area of the light guide. 
   
   
       7 . Light guide according to  claim 6 , in which the first angles (φ 1 ) are greater than the second angles (φ 2 ). 
   
   
       8 . Light guide according to  claim 6 , in which the first angles (φ 1 ) are between 125° and 140°. 
   
   
       9 . Light guide according to  claim 8 , in which the second angles (φ 2 ) are between 95° and 135°. 
   
   
       10 . Light guide according to  claim 3 , in which the length of the first portion is at most 20% of the total length (L) of the light guide. 
   
   
       11 . Light guide according to  claim 10 , in which the length of the first portion is at most 10% of the total length (L) of the light guide. 
   
   
       12 . Light guide according to  claim 1 , in which the light input face is concavely formed. 
   
   
       13 . Light guide according to  claim 1 , in which the light input face has one of the following curvatures: spherical, elliptical, aspherical, biconical, biconically aspherical or biconically spherical. 
   
   
       14 . Light guide according to  claim 1 , having a light output face, through which a large part of the electromagnetic radiation coupled into the light guide through the light input face leaves the light guide. 
   
   
       15 . Light guide according to  claim 14 , in which the light output face has a curvature. 
   
   
       16 . Light guide according to  claim 15 , in which the light output face has a convex curvature. 
   
   
       17 . Light guide according to  claim 15 , in which the light output face has one of the following curvatures: spherical, elliptical, aspherical, biconical, biconically aspherical or biconically spherical. 
   
   
       18 . Light guide according to  claim 14 , in which the light output face is formed by a free formed surface. 
   
   
       19 . Light guide according to  claim 14 , in which the light output face is even. 
   
   
       20 . Light guide according to  claim 3 , in which the side faces of the second portion are even. 
   
   
       21 . Light guide according to  claim 3 , in which the side faces of the second portion have a curvature. 
   
   
       22 . Light guide according to  claim 21 , in which the side faces of the second portion are formed, at least in places, in the manner of one of the following optical elements: CPC, CEC or CHC. 
   
   
       23 . Light guide according to  claim 1 , in which the light guide is formed as a solid body. 
   
   
       24 . Light guide according to  claim 23 , in which the light guide contains a transparent material. 
   
   
       25 . Light guide according to  claim 24 , in which the material has a refractive index of greater than 1. 
   
   
       26 . Light guide according to  claim 25 , in which the material has a refractive index of greater than 1.3. 
   
   
       27 . Light guide according to  claim 23 , in which the material comprises at least one of the following materials: PMMA, polycarbonate, PMMI or COC. 
   
   
       28 . Light guide according to  claim 1 , wherein the light guide is configured to reduce the divergence of a bundle of rays that passes through the light guide. 
   
   
       29 . Optoelectronic component, having a radiation source and a light guide with an uneven light input face, a large part of the electromagnetic radiation emitted by the radiation source being refracted as it enters the light guide. 
   
   
       30 . Optoelectronic component according to  claim 29 , in which the light input face is concavely formed. 
   
   
       31 . Optoelectronic component according to  claim 29 , in which the light input face has one of the following curvatures: spherical, elliptical, aspherical, biconical, biconically aspherical or biconically spherical, 
   
   
       32 . Optoelectronic component according to  claim 29 , in which the light input face completely encloses the radiation source. 
   
   
       33 . Optoelectronic component according to  claim 29 , in which the radiation source is given by one of the following optoelectronic components: light-emitting diode, light-emitting diode chip, VCSEL

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