Method and apparatus for guiding and collecting light in photometry or the like

A method of guiding and collecting light which comprises:

• providing a reflection surface including at least two ellipsoids of revolution which penetrate each other having a common focus and each ellipsoid having a separate second focus,
• placing a specimen to be measured at the common focus, said placing step including fixing said specimen in position at said common focus;
• and
• conducting beams leaving the specimen to at least one detector, said conducting step comprising reflecting said beams at said reflection surface and passing said beams to said separate foci.

A method of guiding and collecting light which comprises:

• providing a light source having an incident primary beam;
• passing the incident primary beam to a specimen to be measured fixed in position having a discrete size to provide a measuring beam leaving said specimen;
• conducting the measuring beam to at least one detector;
• providing a reflection surface of at least half an ellipsoid of revolution, said reflection surface having a first and second focus;
• disposing said specimen at said first focus, wherein said primary beam is radiated directly in the center of said specimen with beams leaving the specimen and passing to the second focus, whereby beams leaving said specimen are reflected at the reflection surface;
• and said method further including disposing the specimen in a defined amount at one of said foci, emitting light at the other focus, and irradiating the specimen on all sides for a defined period of time.