Optics: measuring and testing – By shade or color
Reissue Patent
2006-02-21
2006-02-21
Evans, F. L. (Department: 2877)
Optics: measuring and testing
By shade or color
C356S073000, C250S226000
Reissue Patent
active
RE038986
ABSTRACT:
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 rollers (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 (104and16). Additional upstream idler rollers (18and24) 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 (32a and52b) with different reflective properties. The unit (10) may include a fast 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.
REFERENCES:
patent: 3102202 (1963-08-01), Sweet
patent: 4243319 (1981-01-01), Lodzinski
patent: 4907036 (1990-03-01), Morita
patent: 4937637 (1990-06-01), Magistro
patent: 4944594 (1990-07-01), Burk
patent: 5062714 (1991-11-01), Peterson et al.
patent: 5118183 (1992-06-01), Cargill et al.
patent: 5369494 (1994-11-01), Bowden et al.
patent: 5373364 (1994-12-01), Krzyminski
patent: 5519210 (1996-05-01), Berner
patent: 5646735 (1997-07-01), Krzyminski
patent: 19633557 (1998-03-01), None
patent: 19716066 (1998-09-01), None
patent: 0807810 (1997-11-01), None
“All-In-One Desktop Spectrophotometer,” (X-Rite, Incorporated—Copyright 1999).
“Sprectrolino Spectrophotometer,” (Gretag Macbeth—Mar. 1998).
Gretag Spectrolino SpectroScan Operating Manual, (Gretag—Undated).
Evans F. L.
Warner Norcross & Judd
X-Rite Incorporated
LandOfFree
Portable scanning spectrophotometer does not yet have a rating. At this time, there are no reviews or comments for this patent.
If you have personal experience with Portable scanning spectrophotometer, we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Portable scanning spectrophotometer will most certainly appreciate the feedback.
Profile ID: LFUS-PAI-O-3660418