Light combining module

Abstract

A light combining module includes a first light source, a second light source, a first dichroic mirror, and a first alignment structure. The first light source is used to output a first light. The second light source is used to output a second light. The first dichroic mirror is disposed on a transmission path of the first light and the second light, wherein the first light is incident on the second light source via the first dichroic mirror. The first alignment structure adjusts the position of the second light source.

What is claimed is: 
     
         1 . A light combining module, comprising:
 a first light source used to output a first light;   a second light source used to output a second light;   a first dichroic mirror disposed on a transmission path of the first light and the second light, wherein the first light is incident on the second light source via the first dichroic mirror; and   a first alignment structure adjusting a position of the second light source.   
     
     
         2 . The light combining module as recited in  claim 1 , wherein the first light source comprises a blue light emitting diode disposed on a first light source module, and the second light source comprises a blue light emitting diode covered with an excitable green fluorescent layer and disposed on a second light source module. 
     
     
         3 . The light combining module as recited in  claim 2 , wherein the second light source module further comprises a collimating lens. 
     
     
         4 . The light combining module as recited in  claim 3 , wherein the second light source module satisfies one of the following conditions:
 (1) the second light source module is disposed on the first alignment structure; and   (2) the light combining module further comprises a heat sink disposed on the first alignment structure, and the second light source module is disposed on the heat sink.   
     
     
         5 . The light combining module as recited in  claim 2 , wherein the first alignment structure comprises a plurality of first elastic components and a first fastening component, the plurality of first elastic components are positioned in a first direction, and the first fastening component leans against the plurality of first elastic components, so that the second light source module is moved in the first direction. 
     
     
         6 . The light combining module as recited in  claim 5 , wherein the first alignment structure further comprises a plurality of second elastic components and a second fastening component, the plurality of second elastic components are positioned in a second direction, and the second fastening component leans against the plurality of second elastic components, so that the second light source module is moved in the second direction that is different from the first direction. 
     
     
         7 . A light combining module, comprising:
 a first light source module used to output a first blue light;   a second light source module used to output a green light;   a third light source module used to output a second blue light;   a fourth light source module used to output a red light;   a first dichroic mirror disposed on a transmission path of the first blue light, the second blue light, and the green light, wherein the first blue light is incident on the second light source module via the first dichroic mirror;   a second dichroic mirror disposed on a transmission path of the red light, the second blue light, and the green light; and   a first alignment structure used to change a position where the first blue light is incident on the second light source module.   
     
     
         8 . The light combining module as recited in  claim 7 , wherein the second light source module further comprises a collimating lens. 
     
     
         9 . The light combining module as recited in  claim 8 , wherein the second light source module satisfies one of the following conditions:
 (1) the second light source module is disposed on the first alignment structure; and   (2) the light combining module further comprises a heat sink disposed on the first alignment structure, and the second light source module is disposed on the heat sink.   
     
     
         10 . The light combining module as recited in  claim 7 , wherein the second light source module further comprises a collimating lens, and the first alignment structure is replaced by a second alignment structure, wherein the second alignment structure comprises a base, a bottom surface of the base has a sliding slot, and the first dichroic mirror or the collimating lens has a locking member slidably disposed inside the sliding slot. 
     
     
         11 . The light combining module as recited in  claim 10 , wherein the second alignment structure further comprises an upper cover, a top surface of the upper cover has a position-limiting slot, and the first dichroic mirror or the collimating lens has a position-limiting member that protrudes above the position-limiting slot of the upper cover. 
     
     
         12 . The light combining module as recited in  claim 7 , wherein the first alignment structure comprises a plurality of first elastic components and a first fastening component, the plurality of first elastic components are positioned in a first direction, and the first fastening component leans against the plurality of first elastic components, so that the second light source module is moved in the first direction. 
     
     
         13 . The light combining module as recited in  claim 12 , wherein the first alignment structure further comprises a plurality of second elastic components and a second fastening component, the plurality of second elastic components are positioned in a second direction, and the second fastening component leans against the plurality of second elastic components, so that the second light source module is moved in the second direction that is different from the first direction. 
     
     
         14 . The light combining module as recited in  claim 7 , wherein each of the first light source module and the third light source module is a blue light emitting diode, the second light source is a blue light emitting diode covered with an excitable green fluorescent layer, and the fourth light source module is a red light emitting diode. 
     
     
         15 . The light combining module as recited in  claim 14 , wherein the second light source module further comprises a collimating lens. 
     
     
         16 . The light combining module as recited in  claim 15 , wherein the second light source module satisfies one of the following conditions:
 (1) the second light source module is disposed on the first alignment structure; and   (2) the light combining module further comprises a heat sink disposed on the first alignment structure, and the second light source module is disposed on the heat sink.   
     
     
         17 . The light combining module as recited in  claim 14 , wherein the second light source module further comprises a collimating lens, and the first alignment structure is replaced by a second alignment structure, wherein the second alignment structure comprises a base, a bottom surface of the base has a sliding slot, and the first dichroic mirror or the collimating lens has a locking member slidably disposed inside the sliding slot. 
     
     
         18 . The light combining module as recited in  claim 17 , wherein the second alignment structure further comprises an upper cover, a top surface of the upper cover has a position-limiting slot, and the first dichroic mirror or the collimating lens has a position-limiting member that protrudes above the position-limiting slot of the upper cover. 
     
     
         19 . The light combining module as recited in  claim 14 , wherein the first alignment structure comprises a plurality of first elastic components and a first fastening component, the plurality of first elastic components are positioned in a first direction, and the first fastening component leans against the plurality of first elastic components, so that the second light source module is moved in the first direction. 
     
     
         20 . The light combining module as recited in  claim 19 , wherein the first alignment structure further comprises a plurality of second elastic components and a second fastening component, the plurality of second elastic components are positioned in a second direction, and the second fastening component leans against the plurality of second elastic components, so that the second light source module is moved in the second direction that is different from the first direction.