Densitometry device

Details Densitometry device Densitometry device

2006-07-18

2006-07-18

Lauchman, Layla G. (Department: 2877)

Optics: measuring and testing

Egg candling

With egg transfer

C356S445000, C347S241000, C347S238000

Reexamination Certificate

active

07079229

ABSTRACT:
The present invention relates to a densitometry device that can perform suitable densitometry with minimum required light amounts and can achieve space savings. An angle θ between a reference optical axis of a light source, which is an LED chip, and an optical axis, according to a photoelectric conversion element, of a density measurement optical system is set to, for example, 52°. Light-emitting chips, which emit each of red, green and blue light, are provided inside a cannon shell-shaped light-emitting portion. These light-emitting chips are arranged in a straight line along a direction of conveyance of a color patch chart. Consequently, inclination angles of the light-emitting chips with respect to a measurement axis of the density measurement optical system will always change consistently with each other, and no difference between the inclination angles of the different colors will occur.

REFERENCES:
patent: 6172745 (2001-01-01), Voser et al.
patent: 6473165 (2002-10-01), Coombs et al.
patent: 6480219 (2002-11-01), Uejima et al.
patent: 6512577 (2003-01-01), Ozanich

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