US 2023/0143322 A1 · METHOD FOR DETECTING A SPECTRUM, AND SPECTROSCOPY ASSEMBLY

Abstract

A method for the time-differentiated detection of a spectrum of a test object comprises providing a first conversion dye, which is configured to convert light with a first spectral distribution in the visible range into light with a second spectral distribution in the infrared range. The first conversion dye is excited with a light pulse in the range of the first spectral distribution during a first time period, and a light fraction, reflected or transmitted by the test object, in the range of the first spectral distribution is registered during a first time interval. During a subsequent second time period, a fraction of converted light reflected or transmitted by the test object is registered. According to the invention, the first time interval is selected so that it lies substantially inside a luminescence lifetime for the first conversion dye in the first time period.

Claims21

Dependent claims

A method for the time-differentiated detection of a spectrum of a test object, comprising:

providing a first conversion dye, which is configured to convert light in a first spectral distribution in the visible range into light of a second spectral distribution in the infrared range;
exciting the first conversion dye with a light pulse in the range of the first spectral distribution during a first time period;
registering during a first time interval a light fraction, reflected or transmitted by the test object, in the range of the first spectral distribution;
registering a light fraction of the converted light, reflected or transmitted by the test object, during a second time period after the first time period;
wherein the first time interval is selected so that the first time interval lies substantially inside a luminescence lifetime for the first conversion dye in the first time period.

2 more elements

A spectroscopy arrangement, comprising:

at least a first optoelectronic component, which is configured during operation to emit light in a range of a first spectral distribution in the visible range;
a first conversion dye, which is arranged in the beam path of the optoelectronic component and is configured to convert light in a first spectral distribution in the visible range into light in a second spectral distribution in the infrared range;
an optical sensor, which is configured to register light in the first spectral distribution and in the second spectral distribution;
a control circuit, which is coupled to the at least one optoelectronic component and the optical sensor and is configured to drive the at least one optoelectronic component during a first time period and to register a signal generated by the optical sensor both during a first time interval inside the first time period and in a second time period following the first time period,
wherein the first time interval is selected so that it lies substantially inside a luminescence lifetime of the first conversion dye in the first time period.

2 more elements

Dependencies are inferred from the claim text.

Method for detecting a spectrum, and spectroscopy assembly

Life of this patent

Method for detecting a spectrum, and spectroscopy assembly

Life of this patent

Abstract

Claims21