Optical inspection system employing dual path pickup system with

Details Optical inspection system employing dual path pickup system with Optical inspection system employing dual path pickup system with

1977-11-26

1978-11-14

Corbin, John K.

Optics: measuring and testing

By polarized light examination

With light attenuation

350174, 356390, G01B 1124, G02B 2714

Patent

active

041253175

ABSTRACT:
An optical system having a single spherical mirror for collecting light from two directions combined by a beam splitter after the light has been scattered from the surface of a turbine blade or the like. The spherical mirror is located at an equal optical distance from both the surface of the test specimen and a linear detector array so that it operates at a one-to-one magnification ratio. The linear detector array receives light focused by the mirror along a path folded by the beam splitter. This arrangement is helpful in contouring the surface of a turbine blade near a vertical obstruction such as a shroud of a turbine blade since the collection axes of the pickup legs view the incident spot from different directions. None of the optical elements of the inspection system are located in the plane of movement of the test specimen so that even particularly long items such as a helicopter rotor blade can be contoured. Identical upper and lower optical systems allow both surfaces of the test specimen to be contoured simultaneously. An automatic gain control is provided to adjust the optical modulator so that the effective intensity of the beam incident on the detector array is maintained within predetermined limits.

REFERENCES:
patent: 2607267 (1952-08-01), Fultz et al.
patent: 2741153 (1956-04-01), Reason et al.
patent: 3523736 (1970-08-01), Bottomley

Affiliated with

Also associated with

Rating

Optical inspection system employing dual path pickup system with does not yet have a rating. At this time, there are no reviews or comments for this patent.

If you have personal experience with Optical inspection system employing dual path pickup system with, we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Optical inspection system employing dual path pickup system with will most certainly appreciate the feedback.

Rate now

Comments { 0 }

Profile ID: LFUS-PAI-O-1299330