Browse Prior Art Database

Bent Pin Detection Device

IP.com Disclosure Number: IPCOM000093493D
Original Publication Date: 1967-Oct-01
Included in the Prior Art Database: 2005-Mar-06
Document File: 2 page(s) / 32K

Publishing Venue

IBM

Related People

Huang, SS: AUTHOR [+2]

Abstract

Light from source 10 is conducted through branch X of bundle 11 of optic fibers to impinge on the end of pin 12 of a circuit component 13. Light reflected from the end of pin 12 is carried through a second group of optic fibers within bundle 11, arranged into branch Y. The reflected light from branch Y is directed to impinge on light sensitive device 14 such as the light sensitive oscillator shown in IBM Technical Disclosure Bulletin, Vol. 8, No. 4, September 1965, page 653.

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Bent Pin Detection Device

Light from source 10 is conducted through branch X of bundle 11 of optic fibers to impinge on the end of pin 12 of a circuit component 13. Light reflected from the end of pin 12 is carried through a second group of optic fibers within bundle 11, arranged into branch Y. The reflected light from branch Y is directed to impinge on light sensitive device 14 such as the light sensitive oscillator shown in IBM Technical Disclosure Bulletin, Vol. 8, No. 4, September 1965, page 653.

The light sensitive device, as there described, comprises a light sensitive oscillator having an output connection to an amplifier 15. The latter, in turn, generates a signal having an intensity level directly related to the intensity of light impinging on oscillator 14. The output signal from amplifier 15 is connected to a signal intensity level logic analyzer 16 which preferably is logic circuit which discriminates between a set intensity standard and deviations from it. Where a predetermined deviation occurs, an output signal is supplied by analyzer 16 to control device 17 such as an alarm or some rejection mechanism associated with the devices for conveying the component 13 through the inspection station.

The fibers of branch X and branch Y are intermingled in bundle 11 so that a generally uniform mixed distribution of source light and reflected light fibers is obtained. The amount of light reflected from the end of pin 12 is proportional to the degree of bending...