Method of manufacturing of diffraction grating-based optical identification element

• US 7,092,160 B2
• Filed: 09/12/2003
• Issued: 08/15/2006
• Est. Priority Date: 09/12/2002
• Status: Expired due to Term

• Current Assignee: Illumina Incorporated
• Original Assignee: Illumina Incorporated
• Inventors: Szczepanek, Paul S., Traynor, Joseph, Li, Tuo, Putnam, Martin A., Rauseo, Anthony, Moon, John
• Primary Examiner(s): Lavarias, Arnel C.
• Application Number:
  US10/661,116
• Publication Number:
  US 20040130786A1
• Time in Patent Office: 1,068 Days
• Field of Search: 359/2, 359/566, 359/569, 359/558, 359/571, 359/572, 359/896, 359/900, 359/34, 359/570, 359/577, 356/72, 356/73.1, 385/12, 385/128, 385/37, 385/147, 385/31, 250/559.04, 250/559.11, 250/559.4, 250/227.14, 250/227.29, 250/566, 250/568, 235/473, 435/4, 435/6, 435/228.7, 435/518, 435/524, 435/525, 435/526, 435/527, 435/528, 436/525, 436/526, 436/527, 436/528, 436/531, 436/518, 436/524
• US Class Current: 359/566
• CPC Class Codes: B01J 2219/00459 Beads
• CPC Class Codes: B01J 2219/00463 Directed sorting
• CPC Class Codes: B01J 2219/0047 Pins
• CPC Class Codes: B01J 2219/005 Beads
• CPC Class Codes: B01J 2219/00547 Bar codes
• CPC Class Codes: B01J 2219/00576 fluorophore
• CPC Class Codes: B01J 2219/00702 Processes involving means for analysing and characterising the products
• CPC Class Codes: B01L 2200/0636 Focussing flows, e.g. to laminate flows
• CPC Class Codes: B01L 2200/0668 Trapping microscopic beads
• CPC Class Codes: B01L 2300/0654 Lenses; Optical fibres
• CPC Class Codes: B01L 2400/0409 centrifugal forces
• CPC Class Codes: B01L 2400/0457 passive flow or gravitation
• CPC Class Codes: B01L 2400/0487 fluid pressure, pneumatics
• CPC Class Codes: B01L 3/502707 characterised by the manufacture of the container or its components by shaping or joining plastic parts B29C59/00, B29C65/00; by laminating B32B37/00; manufacture of microstructural devices in general B81C
• CPC Class Codes: B01L 3/5085 for multiple samples, e.g. microtitration plates
• CPC Class Codes: G02B 6/02076 Refractive index modulation gratings, e.g. Bragg gratings
• CPC Class Codes: G03H 1/0272 Substrate bearing the hologram
• CPC Class Codes: G03H 2210/53 Coded object not directly interpretable, e.g. encrypted object, barcode
• CPC Class Codes: G03H 2230/10 Microhologram not registered to the substrate
• CPC Class Codes: G03H 2270/20 Shape
• CPC Class Codes: G03H 2270/24 : Having particular size, e.g. microscopic
• CPC Class Codes: G06K 19/06009 : with optically detectable marking G06K19/063, G06K19/08 take precedence
• CPC Class Codes: Y10S 359/90 : Methods

Abstract

A method for manufacturing a diffusion grating-based optical identification element is provided. The optical identification element includes a known fiber substrate, having a diffraction grating disposed therein the grating being indicative of a code when exposed to incident light. A large number of elements or microbeads all having the same identification codes can be manufactured by cutting the substrate transversely where the grating is located, thereby creating a plurality of elements, at least two of the elements having the grating therein along substantially the entire length of the elements. The elements may be manufactured in many different ways, including winding the fiber onto a basket, forming the gratings in the basket openings or bays, removing the fiber and cutting the fiber to form the elements 8. Each bay may have a set of elements with a unique set of codes therein.

Claims

1. A method of manufacturing an optical identification element;

the method comprising;

providing a substrate;

winding the substrate around a device to provide at least one grating writing section;

writing at least one grating into the substrate disposed in the grating writing section;

bonding the substrate in the at least one grating writing section to a sheet material; and

splitting the substrate disposed in the grating writing section to form a plurality of optical identification elements by cutting the substrate bonded to the sheet material without cutting through the sheet material.