Portable reflex comparator
US6856389B2 · kind B2 · utility
Assignee
Inventor
Key dates
| Filing date | Feb 15, 2001 |
| Grant date | Feb 15, 2005 |
| Priority date | — |
| Expiry date | May 14, 2022 |
Classification
- Technology area (CPC G)Physics
- CPC primaryG01M11/005
- WIPO fieldMeasurement
- WIPO sectorInstruments
Abstract
A portable testing device for comparing one reflective part with another to determine whether the reflective part has met quality standards is presented. The portable reflex comparator includes a light source for directing a beam of light to a lock-in amplifier and to a collimating lens. The collimating lens directs light to a reflex part to be tested, for example, one being manufactured by an injection molding machine to be used as an automotive lens. A light beam is reflected back out of the reflective part, through the collimating lens where it converges to the focal plane where it is processed by the amplifier. A voltmeter produces a reading for the operator to see whether the production part meets a certain standardized value.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.