Fingerprint recording method and apparatus
First Claim
Patent Images
1. An apparatus for copying fingerprints, comprising:
- a first lens for converting a curved image to a flat image;
a second lens aligned with said first lens to receive said flat image therefrom for transmitting said received image to a recording surface; and
a shutter aligned with said transmitted image for selectively preventing said transmitted image from reaching said recording surface.
2 Assignments
0 Petitions
Accused Products
Abstract
The disclosed apparatus is an electro-optical fingerprint copier.
The apparatus uses a camera with one or more lenses to copy the impression made by the ridges on the tips of fingers and thumbs. These impressions are useful as a means for identification since no two persons have the same pattern of ridges.
The apparatus also includes an automatic chart feeder, positioning and releaser, an automatic shutter control and lense system to position fingers. The features make possible the processing of an accurate fingerprint chart in a very short time.
-
Citations
32 Claims
-
1. An apparatus for copying fingerprints, comprising:
-
a first lens for converting a curved image to a flat image; a second lens aligned with said first lens to receive said flat image therefrom for transmitting said received image to a recording surface; and a shutter aligned with said transmitted image for selectively preventing said transmitted image from reaching said recording surface. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8, 9, 10, 11, 12, 13, 14, 15, 16, 17, 19, 20)
-
-
18. A method for recording the image of a fingerprint of a person comprising the steps of:
-
providing a shutter mechanism to selectively provide light access to a recording medium; converting the curved image of a fingerprint to a substantially flat image; transmitting the converted image to the shutter mechanism; and
,selectively operating said shutter mechanism to permit said transmitted image to strike the recording medium.
-
-
21. A fingerprint recording device comprising:
-
a plurality of first lenses, each first lens having a concave cylindrical surface for receiving a finger to be recorded and for transmitting an image of the ridges and depressions of the finger; a plurality of second lenses, each second lens being positioned to receive the transmitted image and being selectively operative to open and allow the transmitted image to pass therethrough; an image recording means to receive and record said transmitted image when one of the shutters is open; recording transport means to position said image recording means into alignment with each of said shutters such that the image recorded when the recording means is in alignment with each shutter does not substantially overlap the images recorded at the other shutters; and control means for indicating the readiness of the device for taking a new set of fingerprints;
for signaling to an operator the recording of each of the images; andfor sequencing the operation of the shutters in a predetermined order. - View Dependent Claims (22, 23, 24, 25, 26, 27, 28)
-
-
29. A fingerprint recording device comprising:
-
plural lens means, each lens means to transmit the image of a fingerprint to a recording plane; plural shutter means intermediate of said lens means and said recording plane, each shutter means being selectively and independently operable to prevent an image from passing therethrough; recording means positioned substantially in said recording plane for recording an image passing through a shutter means; and control means to operate said plural shutter means in a predetermined order to thereby record plural images on said recording means. - View Dependent Claims (30, 31, 32)
-
Specification