High spatial resolution area array detection readhead with a red

Details High spatial resolution area array detection readhead with a red High spatial resolution area array detection readhead with a red

1994-06-30

1995-09-12

Nelms, David C.

Radiant energy

Photocells; circuits and apparatus

Photocell controlled circuit

250234, 359211, H01J 4014

Patent

active

054498988

ABSTRACT:
The high spatial resolution area array detection readhead and method for using the same involve modifying an existing area array detection readhead to provide improved spatial resolution within the sample detection area. One modification involves reducing the field of view of the area array detection readhead. The reduction in the field of view increases pixel spatial resolution because the same number of pixels in the area array detector cover a smaller area. This reduction can be achieved by changing the magnification of the lens of the area array detection readhead or by moving the sample detection area closer to the area array detection readhead. The next modification involves properly aligning the reduced field of view within the sample detection area to take advantage of the improved pixel resolution. Preferably, by rotating the typical area array detection readhead 90 degrees with respect to the sample detection area, the length of the reduced field of view aligns with the width of the sample detection area. Finally, an optical wedge is positioned between the area array detection readhead and the sample detection area. The optical wedge is designed to shift the reduced field of view a predetermined number, X, of degrees from normal along the length of the sample detection area to cover a first field of the sample detection area. By inverting the optical wedge or introducing another optical wedge, the field of view is shifted -X degrees from normal and fills the remaining field of the sample detection area. As such, the sample detection area is divided into two fields that cover the entire sample detection area. Accordingly, by switching the optical wedge between the two wedge positions, the improved area array detection readhead shifts the reduced field of view + and -X degrees to image the entire sample detection area at the higher spatial resolution.

REFERENCES:
patent: 4241257 (1980-12-01), Koester
patent: 4637692 (1987-01-01), Baluteau et al.

Affiliated with

Also associated with

Rating

High spatial resolution area array detection readhead with a red does not yet have a rating. At this time, there are no reviews or comments for this patent.

If you have personal experience with High spatial resolution area array detection readhead with a red, we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and High spatial resolution area array detection readhead with a red will most certainly appreciate the feedback.

Rate now

Comments { 0 }

Profile ID: LFUS-PAI-O-407090