SYSTEM, APPARATUS AND METHOD FOR EXTRACTING THREE-DIMENSIONAL INFORMATION OF AN OBJECT FROM RECEIVED ELECTROMAGNETIC RADIATION

• US 20100142014A1
• Filed: 11/19/2007
• Published: 06/10/2010
• Est. Priority Date: 11/17/2006
• Status: Active Grant

• Current Assignee: Celloptic, Inc.
• Original Assignee: Celloptic, Inc.
• Inventors: Brooker, Gary, Rosen, Joseph
• Granted Patent: US 8,542,421 B2
• Time in Patent Office: Days
• US Class Current: 359/1
• CPC Class Codes: G03B 35/02 by sequential recording
• CPC Class Codes: G03H 1/0402 Recording geometries or arrangements G03H1/0443, G03H1/0476, G03H1/16 take precedence
• CPC Class Codes: G03H 1/041 Optical element in the object space affecting the object beam, not otherwise provided for
• CPC Class Codes: G03H 1/0443 Digital holography, i.e. recording holograms with digital recording means holobject computation G03H1/0866
• CPC Class Codes: G03H 1/06 using incoherent light
• CPC Class Codes: G03H 1/08 Synthesising holograms, i.e. holograms synthesized from objects or objects from hologramsusing electric digital computers G06F; G06T
• CPC Class Codes: G03H 1/0841 Encoding method mapping the synthesized field into a restricted set of values representative of the modulator parameters, e.g. detour phase coding
• CPC Class Codes: G03H 2001/0224 Active addressable light modulator, i.e. Spatial Light Modulator [SLM]
• CPC Class Codes: G03H 2001/0436 Holographic camera
• CPC Class Codes: G03H 2001/0452 arranged to record an image of the object
• CPC Class Codes: G03H 2001/0458 Temporal or spatial phase shifting, e.g. parallel phase shifting method
• CPC Class Codes: G03H 2001/085 Kinoform, i.e. phase only encoding wherein the computed field is processed into a distribution of phase differences
• CPC Class Codes: G03H 2223/23 Diffractive element
• CPC Class Codes: G03H 2225/33 Complex modulation
• CPC Class Codes: G03H 2240/13 Amplitude and phase complex modulation
• CPC Class Codes: G03H 2240/21 Optical density variations
• CPC Class Codes: G03H 2240/23 Optical length variations, e.g. bleached silver halide G03H1/0244 takes precedence
• CPC Class Codes: G03H 2240/24 Index variations only
• CPC Class Codes: H04N 1/00827 Arrangements for reading an image from an unusual original, e.g. 3-dimensional objects

Abstract

An apparatus and method to produce a hologram of an object includes an electromagnetic radiation assembly configured to receive a received electromagnetic radiation, such as light, from the object. The electromagnetic radiation assembly is further configured to diffract the received electromagnetic radiation and transmit a diffracted electromagnetic radiation. An image capture assembly is configured to capture an image of the diffracted electromagnetic radiation and produce the hologram of the object from the captured image.

Claims

1. An apparatus configured to produce a hologram of an object, said apparatus comprising:

an electromagnetic radiation assembly consisting of one diffractive electromagnetic radiation element and configured to receive a received electromagnetic radiation from the object and transmit a transmitted electromagnetic radiation based on the received electromagnetic radiation; and

an image capture assembly configured to capture an image of the transmitted electromagnetic radiation, and produce the hologram of the object from the captured image, wherein the electromagnetic radiation assembly is configured to control only a phase of the transmitted electromagnetic radiation.

2. The apparatus of claim 1, wherein the electromagnetic radiation received from the object is a fluorescent light produced by the object.

3. The apparatus of claim 1, wherein the diffractive electromagnetic radiation element includes a diffractive optical element comprising a spatial light modulator (SLM) having pixels.

4. The apparatus of claim 1, wherein a first portion of the pixels in the SLM implement a phase function Q(−

1/a), the second portion of the pixels in the SLM modulate the received electromagnetic radiation with a constant phase, and the pixels are randomly selected to be in one of the first portion or the second portion.