Browse Prior Art Database

LINEAR REVERTING LENS WITH UNIFORM ILLUMINATION

IP.com Disclosure Number: IPCOM000025583D
Original Publication Date: 1986-Jun-30
Included in the Prior Art Database: 2004-Apr-04
Document File: 4 page(s) / 128K

Publishing Venue

Xerox Disclosure Journal

Abstract

An imaging element is disclosed which rotates an image by 360 degrees, yet consists of a single component. This component can be molded, and after it leaves the mold, It can be immediately assembled into an array No other o erations, such as silvering, or adding baffles to maintain uniform

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Page 1 of 4

XEROX DISCLOSURE JOURNAL

LINEAR REVERTING LENS WITH UNIFORM ILLUMINATION Marry P Brueggemann

Proposed Classification U,S @I 350/175
Int, Cl. GU2b 27/14

. _.

Y MIRRORS

Volume 11 Number 3 May/June I986

[This page contains 1 picture or other non-text object]

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LINEAR REVERTING LENS WITH UNIFORM ILLUMINATION (Cont'd)

I

112 XEROX DISCLOSURE JOURNAL

Volume $1 Nurnbep 3 May/June 1986

[This page contains 1 picture or other non-text object]

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LINEAR REVERTING LENS WITH UNIFORM ILLUMINATION (Cont'd)

An imaging element is disclosed which rotates an image by 360 degrees, yet consists of a single component. This component can be molded, and after it leaves the mold, It can be immediately assembled into an array No other o erations, such as silvering, or adding baffles to maintain uniform

Figure 1 shows the vignetting of the present lens at the edge of the field of view, in the overlap area between the imaging element shown, and its neighbor above (not shown). The upper rays from the object, at the top edge of the field, have been vignetted by the edge of the first aspherac surface The first ray admitted by the first surface is the 50 percent ray, that is the ray whose angle to the chief ray is one-half of the angle of the upper say on-axis This upper ray becomes the lower ray in the image space, as can be seen by following the ray through the three reflections At the second aspheric surface, the upper rays are vignetted in the same manner as they are by the first spheric surface, but they correspond to the lower rays in the object space Thus, both upper and lower rays...