US2011267665A1PendingUtilityA1

Apparatus and method for recording fresnel holograms

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Assignee: CELLOPTIC INCPriority: Jan 30, 2007Filed: Jul 15, 2011Published: Nov 3, 2011
Est. expiryJan 30, 2027(~0.5 yrs left)· nominal 20-yr term from priority
Inventors:Joseph Rosen
G03H 2001/0452G03H 1/06G03H 1/0891G03H 5/00G03H 1/0866G03H 2223/23G02B 5/1876G03H 2210/30G03H 2001/0224G03H 2001/0458G03H 2001/0447G03H 1/0443G03H 1/041G03H 1/08
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Claims

Abstract

An apparatus for producing a hologram of an object includes a light source that emits an incoherent electromagnetic wave toward the object, and a masking device configured to display a mask, receive the incoherent electromagnetic wave emitted toward the object, mask the received incoherent electromagnetic wave according to the displayed mask, and produce a masked electromagnetic wave. The apparatus also includes an image recording device configured to capture an image of the masked electromagnetic wave, and a processing device configured to convert the image of the masked electromagnetic wave into the hologram of the object. A method for producing a hologram of an object is also described.

Claims

exact text as granted — not AI-modified
1 . An apparatus for producing a hologram of an object, the apparatus comprising:
 a source that emits an incoherent electromagnetic wave;   a masking device configured to display a mask, receive the incoherent electromagnetic wave, mask the received incoherent electromagnetic wave according to the displayed mask, and produce a masked electromagnetic wave;   an image recording device configured to capture an image of the masked electromagnetic wave; and   a hologram calculating section configured to calculate the hologram of the object based on the image of the masked electromagnetic wave captured by the image recording device.   
     
     
         2 . The apparatus of  claim 1 , wherein the electromagnetic wave is an x-ray wave. 
     
     
         3 . The apparatus of  claim 1 , wherein the electromagnetic wave is a visible light. 
     
     
         4 . The apparatus of  claim 1 , wherein the displayed mask includes an absorption mask. 
     
     
         5 . The apparatus of  claim 1 , wherein the masking device is configured to display the displayed mask to include plural different absorption masks over a predetermined time period. 
     
     
         6 . The apparatus of  claim 1 , wherein the displayed mask includes a reflective absorption mask. 
     
     
         7 . The apparatus of  claim 1 , wherein the displayed mask includes a transmissive absorption mask. 
     
     
         8 . The apparatus of  claim 1 , wherein the masking device includes a spatial light modulator (SLM) that changes a displayed mask from one Fresnel Zone Pattern to another. 
     
     
         9 . The apparatus of  claim 1 , wherein the displayed mask includes an absorption mask based on a Fresnel Zone Pattern (FZP). 
     
     
         10 . A method for producing a hologram of an object, the method comprising:
 emitting an incoherent electromagnetic wave;   displaying a displayed mask;   receiving the incoherent electromagnetic wave;   masking the received incoherent electromagnetic wave according to the displayed mask to produce a masked electromagnetic wave;   capturing an image of the masked electromagnetic wave; and   calculating the hologram of the object based on the image of the masked electromagnetic wave captured by the capturing.   
     
     
         11 . The method of  claim 10 , wherein the electromagnetic wave is an x-ray wave. 
     
     
         12 . The method of  claim 10 , wherein the electromagnetic wave is a visible light. 
     
     
         13 . The method of  claim 10 , wherein the displayed mask includes an absorption mask. 
     
     
         14 . The method of  claim 10 , wherein the masking includes displaying plural different absorption masks over a predetermined time period. 
     
     
         15 . The method of  claim 10 , wherein the displayed mask includes a reflective absorption mask. 
     
     
         16 . The method of  claim 10 , wherein the displayed mask includes a transmissive absorption mask. 
     
     
         17 . The method of  claim 10 , wherein the masking device includes a spatial light modulator (SLM) that changes a displayed mask from one Fresnel Zone Pattern to another. 
     
     
         18 . The method of  claim 10 , wherein the displayed mask includes an absorption mask based on a Fresnel Zone Pattern (FZP). 
     
     
         19 . An apparatus for producing a hologram of an object, the apparatus comprising:
 a source that emits an incoherent electromagnetic wave;   means for producing a masked electromagnetic wave;   an image recording device configured to capture an image of the masked electromagnetic wave; and   a hologram calculating section configured to calculate the hologram of the object based on the image of the masked electromagnetic wave captured by the image recording device.   
     
     
         20 . The apparatus of  claim 19 , wherein the electromagnetic wave is an x-ray wave.

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