Photonic sensing analytical device

Patent metadata

Field	Value
Publication number	US-10753729-B2
Application number	US-201816149809-A
Country	US
Kind code	B2
Filing date	Oct 2, 2018
Priority date	Oct 2, 2018
Publication date	Aug 25, 2020
Grant date	Aug 25, 2020

Abstract

A device for detecting and determining deformations on a structure surface containing diffractive stress indicator elements comprises a portable computing device having a camera, a processor, a memory, and a display screen, and a casing for conformably enclosing the portable computing device. In one embodiment, the casing includes an elongated light source, a first window positioned to provide access to the display screen of the portable computing device, and a second window positioned to allowing the light source to emit a band of light outside of the casing, and a port hole aligned with the camera of the portable computing device. When the device is positioned proximate to the structure, the elongated light source emits a band of illumination onto the diffractive stress indicator elements, the diffractive elements diffract the emitted radiation and the camera of the portable computing device receives at least a portion of the diffracted radiation.

First claim

What is claimed is:

1. A casing for use with a portable computing device of a type having a housing, camera, processor, memory and a display screen support by the housing configured to detect and determine deformations on a structure surface containing diffractive stress indicator elements, the casing comprising:
a port hole adjacent a first end of the casing an aligned with the camera of the portable computing device;
an integral protruding section adjacent an opposite, second end of the case on the same side thereof, the protruding section having an angled face inclined toward the first end;
a first window positioned to provide access to the display screen of the portable computing device; and
a light source positioned within the protruding section and positioned below a second window therein which enables the light source to emit a band of light outside of the casing;
wherein the casing encloses the housing of the portable computing device, and
wherein, when the casing is positioned proximate to the structure, the light source emits a band of illumination onto the diffractive stress indicator elements, the diffractive elements diffracting the emitted radiation and the camera of the portable computing device receiving at least a portion of the diffracted radiation.

2. The device of claim 1 , wherein the computing device is one of a smart phone and a tablet computer.

3. The device of claim 1 , wherein the casing further comprising an objective lens positioned in front of the camera port hole and aligned with the camera of the portable computing device.

4. The device of claim 1 , wherein the memory of the portable computing device stores instructions for the processor to execute an application for determining deformation of the structure based on the diffracted radiation received by the camera.

5. The device of claim 4 , wherein the application for determining deformation produces a color map of distance based on pixel hue.

6. The device of claim 5 , wherein the application for determining deformation further transforms the color map of distance into a three-dimensional surface and performs averaging operations over an illuminated space to highlight short-range deformation data.

7. The device of claim 1 , wherein the light source is tilted at about 60° with respect to the plane of the device.

8. The device of claim 1 , wherein the light source extends for approximately an entire width of the casing.

9. The casing of claim 1 , wherein the casing has a depth in which the portable computing device is received, and the depth of the casing is increased at the integral protruding section.

10. A device for deformations on a structure surface containing diffractive stress indicator elements, the device comprising:
a portable computing device having a camera, a processor, a memory, and a display screen;
a casing configured to support the portable computing device in a secure manner, the casing including:
a port hole adjacent a first end of the casing an aligned with the camera of the portable computing device;
an integral protruding section adjacent an opposite, second end of the case on the same side thereof, the protruding section having an angled face inclined toward the first end;
a first window positioned to provide access to the display screen of the portable computing device; and
a light source positioned within the protruding section and positioned below a second window therein which enables the light source to emit a band of light outside of the casing;
wherein the casing encloses the housing of the portable computing device, and
wherein, when the casing is positioned proximate to the structure, the light source emits a band of illumination onto the diffractive stress indicator elements, the diffractive elements diffracting the emitted radiation and the camera of the portable computing device receiving at least a portion of the diffracted radiation.

11. The device of claim 10 , wherein the casing further comprising an objective lens positioned in front of the camera port hole and aligned with the camera of the portable computing device.

Assignees

• Saudi Arabian Oil Co
• Bluebridge Tech Ltd

Inventors

• Bovero Enrico
• Bin Saad Hawraa
• Briggs Timothy
• Linehan Daniel

Classifications

• A45C11/002

  for storing portable handheld communication devices, e.g. pagers or smart phones · CPC title

• G06T17/30

  Polynomial surface description · CPC title

• G02B13/0055

  employing a special optical element · CPC title

• G02B5/18

  Diffraction gratings {(holographic optical elements G02B5/32, G03H; integrally combined with optical fibres G02B6/02057; for coupling light guides G02B6/34; integrally combined with optical integrated light guides G02B6/12; grating systems G02B27/44)} · CPC title

• G01B11/165 Primary

  by means of a grating deformed by the object · CPC title