An arrangement for measuring gas concentrations in a gas absorption method, wherein the arrangement includes a plurality of light sources, a measuring cell, at least one measuring receiver and an evaluation apparatus. The measuring cell has a narrow, longitudinally-extended beam path with an entrance-side opening diameter B and an absorption length L with L>B, wherein the measuring cell has a gas inlet and a gas outlet wherein a plurality of light sources of different wavelength spectra is grouped into a first light source group wherein an optical homogeniser is interposed between the first light source group and the measuring cell, wherein, in particular, the homogeniser is coupled to the light source group directly or via a common optical assembly.

A light source module for use in an analytical instrument for analyzing at least one sample is disclosed. The light source module includes at least one light-emitting diode and at least one light guiding rod adapted to guide and shape light emitted by the light-emitting diode. The light source module further includes at least one memory device. The memory device has stored therein at least one driving parameter set, for driving the light-emitting diode in such a way that desired emission properties of light provided by the light source module are generated.

Detection system comprising an examination region, a one-piece optical element including a focusing portion to concentrate light received from the examination region and a guiding portion to homogenize light received from the focusing portion, and a detector configured to detect homogenized light received from the guiding portion.

Disclosed is a sensor and method for detecting one or more gasses in a sample. The sensor includes two sample tube sections, which allow for a larger sample, and correspondingly, more accurate measurement. Having two sample tube sections increases the total length of the sample path. However, placing the sample tube sections in parallel allows for the performance of the sensor to be enhanced, but the footprint of the sensor to remain unchanged. Light pipe material may be used to transport the light between sample tube sections. Further, light pipe material may be used to move the IR lamp away from the first filter tube section, reducing problems in the thermopile by dissipating heat from the IR lamp away from the sample tube section.

There is set forth herein a light energy exciter that can include one or more light sources. A light energy exciter can emit excitation light directed toward a detector surface that can support biological or chemical samples.

This invention is capable of improving performance of a biochemical analyzer and facilitating the maintenance. A light source includes: a first LED that emits ultraviolet light and a second LED that has a light emission spectrum different from that of the first LED, the first LED and the second LED being disposed in parallel; a reflection surface that is opposite to the first LED and reflects light of the first LED; and a dichroic surface that is opposite to the second LED, reflects light of the first LED, and allows light of the second LED to penetrate. When an optical member including the dichroic surface is made to be the dichroic prism, the reflection surface reflects light of the first LED to the second LED side, and by using light source of a configuration having a light shielding unit between a light emission surface of the second LED and a dichroic prism, entering of a light emitted from the plural LEDs as a one light beam (beam) to an optical system of latter stage of the biochemical analyzer is enabled.

Technology described in this document can be embodied in a system for detecting analytes in a biochemical sample. The system includes a container configured to contain the biochemical sample. The system also includes a light source, an optical detector, a lens, and an optical aperture. The lens is disposed between the container and the optical detector, and the optical aperture is disposed between the lens and the optical detector. The system further includes a structure configured to house the container, the optical aperture, the lens, and the optical detector.

A light guide device for conducting a light beam between a light source and a measuring unit for measuring a gas or substance concentration includes a light conductor and a holding apparatus. The conductor includes at least one coupling section, which faces, or can be arranged to be turned toward, the light source, for coupling the light beam, and a decoupling section, which faces, or can be arranged to be turned toward, the measuring unit, for decoupling the light beam. The conductor is configured to conduct the light beam between the coupling section and the decoupling section via total reflection on a boundary surface to a fluid or material that surrounds the conductor and has a smaller refractive index than the conductor. The holding apparatus is configured to hold the conductor in the fluid such that at least one primary portion of a surface of the conductor contacts the fluid.

There is set forth herein a light energy exciter that can include one or more light sources. A light energy exciter can emit excitation light directed toward a detector surface that can support biological or chemical samples.

The invention relates to a system (15) for observing a plate (10) including wells (20), including, for each well (20): a source (40) comprising a light-emitting diode (60) capable of producing a light ray, a pinhole (70), and a light integrator (65), an optical sensor (185) able to collect the optical signal from the well (20), the system (15) being such that: a ratio between the length and the average transverse dimension (Dt) of each light integrator (65) is greater than or equal to 2.2, or at least one optical axis is off-centered relative to the propagation line, the ratio between the length and the average transverse dimension of the integrator being greater than or equal to 1.5.