초록 ▼

A portable scatterometer and/or an angular radiated light measurement instrument that uses a measurement head which includes a double tapered fiber optic bundle with a concave front face to simultaneously collect partial or full hemispherically scattered light reflected from a point on a surface ill

A portable scatterometer and/or an angular radiated light measurement instrument that uses a measurement head which includes a double tapered fiber optic bundle with a concave front face to simultaneously collect partial or full hemispherically scattered light reflected from a point on a surface illuminated by a depolarized, telescopically focused, laser diode source, the light rays being received by each fiber normal to its face. The image of the collected light beams is minified and coupled by the fiber optic bundle into an anti-blooming CID camera with an x-y scanning area array which converts the light beams to electrical signals. In a unique real time, computer-controlled, data acquisition and reconstruction process, a frame grabber a unique algorithm are used to collect over 200,000 points of light reconstruct the data into a 2D or 3D scatter profile and display the results, all within one second. Multiple embodiments of the tapered fiber optic bundle collector are disclosed. Alignment mechanisms provide z-translation, azimuth, and focus adjustments. The measurement unit housing securable to a production line machine for use, such as, a quality control inspection device.

대표청구항 ▼

[ I claim:] [1.] The process of acquiring, with a camera having an x-y scannable array of pixels, light emanated from a subject comprising the steps of:a) measuring the ambient light and storing the measurement in a first frame which is a reference frame,b) illuminating the subject with a laser diod

[ I claim:] [1.] The process of acquiring, with a camera having an x-y scannable array of pixels, light emanated from a subject comprising the steps of:a) measuring the ambient light and storing the measurement in a first frame which is a reference frame,b) illuminating the subject with a laser diode light source having a selectable power level for a selectable time on period,c) collecting the light beams scattered from the subject during the time on period and simultaneously transmitting the collected light beams to all of the pixels of the camera array,d) digitizing the collected light beams by x-y scanning the camera array and converting the light beam collected at each pixel to electrical data representative of the collected light beam,e) storing the digitized data in the next frame, andf) repeating steps (b) to (e) while increasing the on time or the power level of the laser diode by a predetermined amount during each repetition, reby a reference frame and a number of data frames are collected and stored in N+1 sequential frames where N is the number of data frames.