Method for producing a light module, light module and method for operating a light module and computer program product

Abstract

A method for producing a light module (1) comprises: putting in position, in particular pressing in, at least two, preferably three light sources (2a, 2b, 2c, 2d), in particular laser diodes, in a light source holder (3), in particular a diode holder; positioning a beam combination device (4) comprising at least one dichroic mirror (5) per laser diode, wherein the respective dichroic mirrors (5) are spaced from one another; putting in position collimation lenses (6), one in front of each of the laser diodes on a base plate (7) such that the light emitted from the laser diodes is collimated, preferably with a collimation lens (6) in a positioning module (8), wherein the dichroic mirrors (5) are simultaneously placed on the base plate (7).

1 - 15 . (canceled) 
     
     
         16 . A method for producing a light module comprising:
 putting in position at least two light sources in a light source holder;   positioning a beam combination device comprising at least one dichroic mirror per laser diode, wherein the respective dichroic mirrors are spaced at a distance from one another; and   putting in position collimation lenses, one in front of each of the laser diodes on a base plate, such that the light emitted from the laser diodes is collimated, wherein the dichroic mirrors are simultaneously placed on the base plate.   
     
     
         17 . The method according to  claim 16 , wherein the individual dichroic mirrors are positioned such that their position and arrangement is within a predefined tolerance range of one another, wherein the tolerance range lies at least one of: in a range of +/−0.01 mm with regard to a position of the dichroic mirrors from one another, and in a range of +/−4 mrad with regard to placement relative to a normal of the base plate and/or relative to another dichroic mirror ( 5 ). 
     
     
         18 . The method according to  claim 16 , wherein a beam-shaping module is also placed on the base plate at the same time as the beam combination device. 
     
     
         19 . The method according to  claim 16 , wherein at least one MEMS mirror is positioned such that the emitted light from the light sources impinges on the MEMS mirror after passing through the beam combination device and the beam-shaping module. 
     
     
         20 . The method according to  claim 16 , wherein deviations of the emitted light of a light source relative to the emitted light of a second light source are corrected by software such that an optimally superimposed beam is produced from the emitted light of the light sources. 
     
     
         21 . A light module for producing light comprising:
 a light source holder having at least two light sources ( 2 ),   a collimation lens per light source, and   a beam combination device which, in each case, comprises a dichroic mirror per light source for combining the light emitted from the respective light sources,   wherein the dichroic mirrors are arranged from one another within a predefined tolerance range and are spaced from one another,   wherein the tolerance range lies in a range of +/−0.01 mm with regard to spacing of the dichroic mirrors ( 5 ) from one another, and lies in a range of +/−4 mrad with regard to placement relative to at least one of a normal of the base plate and another dichroic mirror.   
     
     
         22 . The light module according to  claim 21 , wherein the light module comprises at least one of a beam-shaping module and a light source controller by which the light sources can be controlled. 
     
     
         23 . The light module according to one  claim 21 , wherein the light module comprises at least one MEMS mirror. 
     
     
         24 . The light module according to  21 , wherein the light module comprises a correction unit by which the deviations of the emitted light of a light source relative to the emitted light of a second light source can be corrected by software such that an optimally superimposed beam is created from emitted light of the light sources. 
     
     
         25 . A light module produced by a method according to  claim 16 . 
     
     
         26 . A method of operating a light module comprising:
 producing light using at least two light sources,   collimating the produced light,   combining the produced light to form combined light in a beam combination device,   deflecting the combined light through at least one MEMS mirror,   controlling at least one of the MEMS mirror and the light sources by a light source controller,   wherein the at least one of at least one MEMS mirror and the light sources can be acted on by the light source controller in such a way that deviation, in the superimposition between the light of the individual light sources, is corrected.   
     
     
         27 . The method according to  claim 26 , wherein for correction of the deviation, a distortion is firstly determined on the basis of precisely one reference channel. 
     
     
         28 . The method according to  claim 27 , wherein once the correction terms for the distortion are determined, a correction term is determined for the offset of each individual produced spot of each color channel relative to the reference channel and is added to the correction term of the distortion. 
     
     
         29 . A computer program product that can be directly loaded into the internal memory of a digital computer or that is stored on a medium and comprises software code portions by which the method according to  claim 26  are carried out when the product is operating on a computer. 
     
     
         30 . The computer program product according to  claim 29  for controlling at least one of at least one MEMS mirror and a light source controller in a light module, wherein the light module comprises at least one MEMS mirror and a light source controller, wherein at least one of the at least one MEMS mirror and the light sources are acted on in such a way that deviations in the superimposition between the light of individual light sources of the light module are corrected. 
     
     
         31 . The method according to  claim 16 , wherein the light sources are pressed in. 
     
     
         32 . The method according to  claim 16 , wherein the light sources are laser diodes. 
     
     
         33 . The method according to  claim 16 , wherein the light emitted from the laser diodes is collimated with a collimation lens in a positioning module. 
     
     
         34 . The method according to  claim 18 , wherein the beam-shaping module is a prismatic telescope. 
     
     
         35 . The method according to  claim 34 , wherein the prisms of the prismatic telescope do not contact one another. 
     
     
         36 . The light module according to  claim 21 , wherein the light sources are laser diodes. 
     
     
         37 . The light module according to  claim 22 , wherein the beam-shaping module is arranged on the base plate. 
     
     
         38 . The light module according to  claim 37 , wherein the laser diodes are pressed in. 
     
     
         39 . The light module according to  claim 21 , wherein the light module comprises a collimation lens for each positioning module. 
     
     
         40 . The light source according to  claim 21 , wherein the light source holder, the collimation lenses, and the beam combination device are arranged on a base plate. 
     
     
         41 . The light module according to  claim 22 , wherein the beam-shaping module is a prismatic telescope. 
     
     
         42 . The light module according to  claim 23 , wherein MEMS mirror is arranged on the base plate. 
     
     
         43 . The method according to  claim 26 , wherein the light module is a light module according to  claim 21 . 
     
     
         44 . The method according to  claim 26 , wherein the light sources are laser diodes. 
     
     
         45 . The method according to  claim 27 , wherein correction terms are calculated for each individual image point. 
     
     
         46 . The computer program according to  claim 30 , wherein the light module is a light module light module for producing light comprising:
 a light source holder having at least two light sources ( 2 ),   a collimation lens per light source, and   a beam combination device which, in each case, comprises a dichroic mirror per light source for combining the light emitted from the respective light sources,   wherein the dichroic mirrors are arranged from one another within a predefined tolerance range and are spaced from one another,   wherein the tolerance range lies in a range of +/−0.01 mm with regard to spacing of the dichroic mirrors ( 5 ) from one another, and lies in a range of +/−4 mrad with regard to placement relative to at least one of a normal of the base plate and another dichroic mirror.