Multispectral lighting apparatus
View Patent ↗The invention is directed to a multispectral illumination device for a microscope or for a reader. According to the invention, the illumination device comprises at least three receptacle positions for lighting modules and at least one receptacle position for coupling modules, the mechanical devices for connecting the lighting modules or coupling modules at the receptacle positions to the illumination device being designed in such a way that the lighting modules or coupling modules can be easily changed. Further, the receptacle positions are arranged in such a way that, with suitable selection of the lighting modules and coupling modules, all individual spectra of the lighting modules in a total spectrum are available simultaneously at the output of the illumination device.
1. A multispectral illumination device for a microscope or reader comprising:
four exchangeable lighting modules, each light module having a spectral region that is different from the spectral regions of the other light modules; and
three exchangeable coupling modules, each with a dichromatic mirror for coaxial superimposition of the light radiation emitted by the lighting modules;
wherein the dichromatic mirrors, which are designed as longpass filters, divide the entire spectral region into four color regions;
wherein a lighting module lies in one of the four color regions, and the lighting modules and coupling modules are arranged in a binary tree structure;
wherein, when exchanging one lighting module for another light module whose spectral region lies in a different color region, the dichromats of the coupling modules are adapted to the individual spectra of the lighting modules arranged in front of them; and
wherein each longpass filter is selected in such a way that all individual spectra of the lighting modules in an entire spectrum are available simultaneously at an output of the multispectral illumination device.
2. The multispectral illumination device according to claim 1 ;
wherein each lighting module comprises at least one lighting means, at least one means for beam shaping, and/or at least one means for spectral shaping.
3. The multispectral illumination device according to claim 2 ;
wherein the means for beam shaping comprises diffractive optics and/or lens arrays and/or lenses; and
wherein each means for spectral shaping comprises a filter.
4. The multispectral illumination device according to claim 1 ;
wherein interlocks, which switch off all of the lighting modules of the multispectral illumination device when any light module is removed, are provided at the receptacle positions for the lighting modules and coupling modules.
5. The multispectral illumination device according to claim 1 ;
wherein the lighting modules and coupling modules are contained in a common housing.
6. The multispectral illumination device according to claim 5 ;
wherein the housing is outfitted with an interlock which switches off the lighting modules when the housing is opened.
7. The multispectral illumination device according to claim 1 ;
wherein each lighting means of each lighting module comprises at least one LED.
8. The multispectral illumination device according to claim 1 ;
wherein one lighting means of one of the lighting modules is a laser diode.
9. The multispectral illumination device according to claim 1 ;
wherein at least one lighting module is replaced by a fiber-coupled, broadband light source.
10. The multispectral illumination device according to claim 1 ;
wherein a fiber-coupled light source is introduced into the beam path of the multispectral illumination device by mechanically or electrically switchable optics.
11. The multispectral illumination device according to claim 10 ;
wherein the switchable optics are a displaceable prism or a swivelable mirror.