DE1912481A1 - Fiber optic cable as a carrier of light of different wavelengths for light absorption and light transmission measuring devices - Google Patents

Description

Fiber optic cables as carriers of light of different wavelengths for Light absorption and light transmission measuring devices is the subject of the invention a new type of light input and output in measuring devices, e.g. photometers, the changes in light absorption and light transmission when passing through Measure light through any optical media. The invention is based on the object the beam of light of a defined wavelength targeted and circumscribed to a Bring the measuring cuvette containing the medium to be measured, e.g. that of a photometer. This results in advantageous structural changes to the measuring devices, including in partially mechanized ones analytical systems, as the light guide is flexible and therefore less tied to a specific location is. A flexible way of guiding light in absorption and transmission measuring devices became bisner not used, the advantages resulting therefrom not used.

Fig. 1 The essential element of the invention according to Fig. 1 are two Fiber optic cable (Fig. 1; 1, 1a, Ib and 2), - e.g. best made of optical glass fibers, which are combined to form fiber optic cables or other substances that conduct light Have properties - those in front of (1, la, 1b) and behind (2) the cuvette (3, 3a, 3b) are attached, that is from the portion lying closer to the light source (4) (1, la, 1b) emerging monochrome or polychromatic light after passage through the cuvette (3, 3a, 3b) containing the mecium directly to the one behind the cuvette attached fiber optic cable (2) falls. An additional centering of the incoming and / or emerging light beam can be through a lens adapted to the cable and blueprint system (9) can be achieved. The outgoing cable (2) guides the light e.g. to the photocell (5). The light can escape from the cuvette (3b and 3c) but also without the interconnection of (2) directly or via additional optical Systems are directed to the photocell (5a and 5b).

Fig. 2 The targeted circumscribed, using several flexible light guide lights continuous light supply (Fig. 1; 1, la, Ib) on the cuvette (3) enables the supply of light rays of different wavelengths (# 1, # 2, # 3 etc.) to "one" (Fig.2; 3) or several cuvettes (Fig. 1; 3a, 3b, 3c). Rierdurch will it for the first time possible in a simple way, 1.) the transmissions or Determine absorptions at different wavelengths simultaneously and 2.) from one Light source (Fig. 1; 4) consisting of several cuvettes simultaneously with light of different wavelengths (Fig. 1; i 3) to supply. An additional centering of the entering and / or exiting light beam can be through a lens and diaphragm system adapted to the light cable can be achieved.

Fig. 3 The flexible conduit of light of various wavelengths across Fiber optic cable is particularly suitable for flow-through cells. The flow cuvette (Fig. 3; 3) is firmly attached (detachable or not detachable) between the light-conducting Cables (Fig. 3; 1 and 2). Due to the solid connection between light cables and In the cuvette, there is no need to adjust the cuvette in the open light beam.

Fig. 4 When using the catheter principle, the flexible one is suitable Light guide for measurements within liquid line systems (e.g. in Tubes of industrial plants, auto analyzer hose systems or in the vascular system of Human and animal). It represents cier distance (Fig. 4; a) between finding the Light guide cable (Fig. 4; 1 and 2) represent the layer thickness of the cuvette. The Licutzu- and discharge can be combined in one cable - but optically separated.

Claims (6)

Patent on the smell 1. The line (Fig. 1; 1, la, Qb, 2; Fig. 2, Fig. 3 and Fig. 4) of Light of different wavelengths (# 1, # 2 etc.) bundled by one or more or unbundled flexible light-conducting cables (e.g. glass, plastic or other fibers with light-conducting properties) in light absorption, Licattransmissions- and fluorescence measuring devices. The light guide is characterized in that either only the supply (Fig. 1; 1, la and Ib) or only the discharge (Fig. 1; 2) or supply and discharge of the light of a defined wavelength to the medium containing cuvette (Fig. 1; 3, 3a and 3b) is flexible. An additional centering of the light emerging from or into the light guide cable can pass through a light guide cable adapted lens and diaphragm system (Fig. 1; 9) can be achieved. 2. Apparatus according to claim 1, characterized in that the light guide a flexible light guide that can be placed anywhere between the light source and the photocell by. the cuvette allows (Fig. 1). 3. Apparatus according to claim 1, characterized in that of one Light source off with the interposition of light separation units (filters, grids or prisms) light of different wavelengths via any number of light guides can be directed to any number of cuvettes (Fig. 1). 4. Apparatus according to claim 1-3, characterized in that the Targeted, circumscribed light supply via flexible, possibly bundled light guide cables the supply of several light beams of different wavelengths to the cuvette in one cuvette (Fig. 2). The light beam may come from several directions. 5. Apparatus according to claim 1-4, characterized in that the flexible conduction of light of one or more wavelengths on flow cuvettes (Fig. 3) can be used by one or more bundled or unbundled Light guide cables can be connected permanently or detachably to the flow cell. 6. Apparatus according to claim 1-4, characterized in that the flexible conduction of light of different wavelengths for measurements within liquid conduit systems when using a fiber optic catheter (Fig. 4) can be used. The light guide is interrupted at the end of the catheter. Included the distance between the ends of the fiber optic cables represents the path length of the cuvette The light supply and discharge can be in one cable - but optically separated. be united.