System, apparatus and method for extracting three-dimensional information of an object from received electromagnetic radiation
First Claim
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1. An apparatus configured to produce a hologram of an object, said apparatus comprising:
- an electromagnetic radiation source configured to provide incoherent electromagnetic radiation on the object;
a correlator comprising a first optical assembly configured to receive incoherent electromagnetic radiation reflected by or scattered from the object and transmit transformed electromagnetic radiation, a mask assembly configured to receive the transformed electromagnetic radiation and transmit amplitude and/or phase modified electromagnetic radiation, and a second optical assembly configured to receive the amplitude and/or phase modified electromagnetic radiation and transmit further transformed electromagnetic radiation; and
an image capture assembly configured to capture an image of the transmitted further transformed electromagnetic radiation, and produce the hologram of the object based on the captured image,wherein the mask assembly includes one or more diffractive optical elements, each of the one or more diffractive optical elements including an array of plural transform regions, each of which is configured to transform amplitude and/or phase of the received transformed electromagnetic radiation, and at least one of the diffractive optical elements includes a plurality of volume-modulated diffractive optical elements, each of the volume-modulated diffractive optical elements corresponding to a different transform region, each of the volume-modulated diffractive optical elements having a volume that is different from a volume of at least one other volume-modulated diffractive optical element and is configured to transform the amplitude and/or phase of the received transformed electromagnetic radiation to produce the amplitude and/or phase modified electromagnetic radiation.
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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.
16 Citations
19 Claims
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1. An apparatus configured to produce a hologram of an object, said apparatus comprising:
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an electromagnetic radiation source configured to provide incoherent electromagnetic radiation on the object; a correlator comprising a first optical assembly configured to receive incoherent electromagnetic radiation reflected by or scattered from the object and transmit transformed electromagnetic radiation, a mask assembly configured to receive the transformed electromagnetic radiation and transmit amplitude and/or phase modified electromagnetic radiation, and a second optical assembly configured to receive the amplitude and/or phase modified electromagnetic radiation and transmit further transformed electromagnetic radiation; and an image capture assembly configured to capture an image of the transmitted further transformed electromagnetic radiation, and produce the hologram of the object based on the captured image, wherein the mask assembly includes one or more diffractive optical elements, each of the one or more diffractive optical elements including an array of plural transform regions, each of which is configured to transform amplitude and/or phase of the received transformed electromagnetic radiation, and at least one of the diffractive optical elements includes a plurality of volume-modulated diffractive optical elements, each of the volume-modulated diffractive optical elements corresponding to a different transform region, each of the volume-modulated diffractive optical elements having a volume that is different from a volume of at least one other volume-modulated diffractive optical element and is configured to transform the amplitude and/or phase of the received transformed electromagnetic radiation to produce the amplitude and/or phase modified electromagnetic radiation. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8, 9, 10, 11)
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12. An apparatus configured to produce a hologram of an object, said apparatus comprising:
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an electromagnetic radiation source configured to provide incoherent electromagnetic radiation on the object; a composite mask comprising a first lens and a second lens, wherein the first lens is configured to receive incoherent electromagnetic radiation reflected by or scattered from the object and transmit first refracted electromagnetic radiation and the second lens is configured to receive the incoherent electromagnetic radiation reflected by or scattered from the object and transmit second refracted electromagnetic radiation; a third lens configured to (1) receive the first refracted electromagnetic radiation from the first lens and the second refracted electromagnetic radiation from the second lens, and (2) transmit the received first refracted electromagnetic radiation and the received second refracted electromagnetic radiation such that they interfere with each other; and an image capture assembly configured to capture an image of the interference of the first refracted electromagnetic radiation and the second refracted electromagnetic radiation transmitted by the third lens and produce the hologram of the object based on the captured image. - View Dependent Claims (13, 14, 15, 16, 17, 18, 19)
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Specification