G - Physics – 01 – J
Patent
G - Physics
01
J
G01J 3/46 (2006.01) G01J 3/02 (2006.01) G01J 3/42 (2006.01) G01J 3/51 (2006.01) G01N 21/13 (2006.01) G01N 21/47 (2006.01)
Patent
CA 2279928
The specification discloses a portable spectrophotometer (10) providing improved movement and control of the sample (S) during analysis. The unit (10) includes a base (12) and an upper assembly (14) supported on the base (12) for floating movement. Both a spectral measurement engine (20) and drive rollers {104) are contained within the upper assembly. The base ( 12) includes independently suspended idler ropers (16), and the drive rollers (104) engage the idler wheels (16), so that at least a portion of the weight of the upper assembly (14) is borne by the engaging drive rollers (104) and idler rollers (16). The upper assembly (14) therefore floats up and down with samples (S) of varying thickness moving between the rollers (104 and 16). Additional upstream idler rollers (18 and 24) on the base and the upper assembly engage one another and bear a portion of the weight of the upper assembly (14) to create tension in opposition to the drive rollers (104) to hold the sample (S) taut. A planar media guide (130) is located on the underside of the upper assembly (14) and surrounds the spectral engine (20) to engage the sample (S) and reduce flexing and bowing of the sample (S). A manually actuated backer (30) is supported by the base (12) to selectively present to the spectral engine (20) one of two areas (52a and 52b) with different reflective properties. The unit (10) may include a first light source (21) in the spectral engine and a second light source (60) in the backer (30) so that the spectrophotometer (10) is capable of both reflective and transmissive analysis.
L'invention concerne un spectrophotomètre portable (10) pourvu d'un système de déplacement et de commande amélioré de l'échantillon (S) pendant l'analyse. L'unité (10) comporte une base (12), et un ensemble supérieur (14) supporté sur la base (12) pour un déplacement flottant. L'ensemble supérieur contient à la fois une machine de mesure spectrale (20), et des galets d'entraînement (104). La base (12) comporte des galets fous (16) suspendus indépendamment, les galets d'entraînement (104) étant en contact avec les galets fous (16) de manière qu'une partie du poids de l'ensemble supérieur (14) porte sur les galets d'entraînement (104) et les galets fous (16). L'ensemble supérieur (14) monte et descend par son flottement en fonction des différentes épaisseurs des échantillons qui se déplacent entre les galets (104 et 16). En amont, d'autres galets fous (18 et 24) montés sur la base et l'ensemble supérieur en contact entre eux, supportent une partie du poids de l'ensemble supérieur (14) de façon à créer une tension en s'opposant aux galets d'entraînement (104) et maintenir l'échantillon (S) tendu.
Borden Ladner Gervais Llp
X-Rite Incorporated
LandOfFree
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