Browse Prior Art Database

FULL FRAME ARRAY LENS ILLUMINATOR

IP.com Disclosure Number: IPCOM000025552D
Original Publication Date: 1986-Feb-28
Included in the Prior Art Database: 2004-Apr-04
Document File: 2 page(s) / 96K

Publishing Venue

Xerox Disclosure Journal

Abstract

Referring to Figures I, 2 there is shown an imaging system 8. A document If is placed on the top surface of a platen 12, the bottom surface of which is optically opaque and diffusely reflective save for a plurality of transparent apertures 14 formed in intimate contact with the surface 12A of the platen nearest the full frame lens array 16. The transparent apertures are circular; only a portion of the apertures are shown in Figures 1 and 2. The pattern covers a significant area of the platen surface and is designed to keep the white areas out of the field of view of the lenslets 18 forming the array. A spacer segment 19 separates the lens array from the platen to prevent scattering. A linear flash lamp 20 is completely enclosed in the space formed between the side of platen 12 and an associated reflector 22.

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Page 1 of 2

XEROX DISCLOSURE JOURNAL

FULL FRAME ARRAY LENS ILLUMINATOR

James J. Appel George J. Roller Arthur M. Gooray

Proposed Classification
U.S. GI. 355/8

Int. CI. G03g 15/28

FIG 3

Volume I1 Number 1 JanuaryjFebruary 1986 31

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

Page 2 of 2

FULL FRAME ARRAY LENS ILLUMINATOR(Cont'd)

Referring to Figures I, 2 there is shown an imaging system 8. A document If is placed on the top surface of a platen 12, the bottom surface of which is optically opaque and diffusely reflective save for a plurality of transparent apertures 14 formed in intimate contact with the surface 12A of the platen nearest the full frame lens array 16. The transparent apertures are circular; only a portion of the apertures are shown in Figures 1 and 2. The pattern covers a significant area of the platen surface and is designed to keep the white areas out of the field of view of the lenslets 18 forming the array. A spacer segment 19 separates the lens array from the platen to prevent scattering. A linear flash lamp 20 is completely enclosed in the space formed between the side of platen 12 and an associated reflector 22. A power or can reflector associated The supply (not shown) provides power to lamp 18. be diffuse specular.

Figure 3 shows a second embodiment wherein spacer 19 covers the entire array 16 and is placed in intimate contact with the bottom surface 12a of the platen. The top surface of the spacer IS painted white with a clear hole pattern cor...