Patent · US Active

Color sensing device

US8665438B2 · kind B2 · utility

2Cited by

4References

18Claims

0Family size

Assignee

HEWLETT-PACKARD DEVELOPMENT COMPANY, L.P. · US

Inventors

Stephan R. Clark · Albany, US
Brett E. Dahlgren · Albany, US

Key dates

Filing date	Jan 30, 2013
Grant date	Mar 4, 2014
Priority date	—
Expiry date	Jan 30, 2033

Classification

Technology area (CPC Y)Emerging Cross-Sectional Technologies
CPC primaryY10T29/49002
WIPO fieldMeasurement
WIPO sectorInstruments

Abstract

A color sensing apparatus includes an optical system that produces a spatially uniform light beam independent of the use of a diffusion chamber, and a color sensor that senses reflected light of a reflection of the spatially uniform light beam, wherein the optical system includes a light integrator with a tapered inlet surface and a lens secured to an exit plane thereof.

Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.