PHOTOMETER
Photometer which comprises a source of light (5), from which the measurement light is arranged to be passed through a lens (6) and a filter (7) onto a semi-transparent mirror (8) placed on the path of the light preferably at an angle of 45`, the reference beam of light (9) being arranged as passing...
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| Format: | Patent |
| Sprache: | eng |
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| Zusammenfassung: | Photometer which comprises a source of light (5), from which the measurement light is arranged to be passed through a lens (6) and a filter (7) onto a semi-transparent mirror (8) placed on the path of the light preferably at an angle of 45`, the reference beam of light (9) being arranged as passing through the said mirror onto a reference detector (11) and the measurement beam of light (10) reflected from the said mirror being arranged as passing to the measurement detector (12). According to the invention, the said source of light (5), lens (6), filter (7), semi-transparent mirror (8), and the reference detector (11) and the measurement detector (12) are placed in an optics frame (4) of one piece, the said optics frame being movable in relation to the frame and case part (1) of the photometer along one or several guides (2, 3). The track of movement of the optics frame consists of linear movement back and forth, the length of the movement corresponding the length of the in-line cuvette set (13) to be measured by means of the photometer.
Un photometre comprend une source de lumiere (5) d'ou provient la lumiere de mesure que l'on fait passer au travers d'une lentille (6) et d'un filtre (7) sur un miroir semi-transparent place sur le chemin de la lumiere, de preference a un angle de 45 , le rayon de lumiere de reference (9) passant au travers de ce miroir et arrivant sur un detecteur de reference (11), et le rayon de lumiere de mesure (10) reflechi par ce miroir etant dirige sur le detecteur de mesure (12). Selon l'invention, cette source de lumiere (5), la lentille (6) le filtre (7), le miroir semi-transparent (8), le detecteur de reference (11) et le detecteur de mesure (12) sont places dans un cadre optique (4) d'une piece, ce cadre optique etant mobile par rapport a la structure (1) du photometre le long d'un ou plusieurs guides (2, 3). Le chemin de deplacement du cadre optique est un mouvement lineaire en avant et en arriere, dont la longueur correspond a la longueur de l'ensemble des cuvettes alignees (13) a mesurer a l'aide du photometre. |
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