Modular remote inspection device with digital imager

• US 20070185379A1
• Filed: 12/22/2006
• Published: 08/09/2007
• Est. Priority Date: 01/10/2005
• Status: Abandoned Application

• Current Assignee: Perceptron Incorporated (Atlas Copco AB)
• Original Assignee: Perceptron Incorporated (Atlas Copco AB)
• Inventors: Boehnlein, Al, Newman, Tye, Eckhoff, Paul, Pease, Alfred
• Application Number:
  US11/645,280
• Publication Number:
  US 20070185379A1
• Time in Patent Office: Days
• US Class Current: 600/110
• CPC Class Codes: A61B 1/00052 positioned at proximal end of the endoscope body
• CPC Class Codes: A61B 1/00087 Tools A61B17/00234 takes precedence
• CPC Class Codes: A61B 1/0051 with controlled bending of insertion part
• CPC Class Codes: A61B 1/05 characterised by the image sensor, e.g. camera, being in the distal end portion
• CPC Class Codes: A61B 1/0676 at distal tip of an endoscope
• CPC Class Codes: A61B 1/0684 using light emitting diodes [LED]
• CPC Class Codes: G02B 23/2476 Non-optical details, e.g. housings, mountings, supports

Abstract

A remote inspection device includes a digital imager housing having a digital imaging device in communication with a digital video signal conversion device serializing the digital video signal. A digital display housing has a digital display in communication with a digital video signal re-conversion device de-serializing the digital video signal. A push stick housing is configured to be grasped by a user. A flexible cable interconnects the digital imager housing with the push stick housing, thereby rendering a position of the digital imager housing responsive to user manipulation of the push stick housing. The flexible cable also serves as a transmission medium transmitting the serialized digital video signal at least from the digital video signal conversion device to the push stick housing.

Claims

1. A remote inspection device, comprising:

a digital imager housing having a digital imaging device in communication with a digital video signal conversion device serializing the digital video signal;

a digital display housing having a digital display in communication with a digital video signal re-conversion device de-serializing the digital video signal;

a push stick housing configured to be grasped by a user; and

a flexible cable interconnecting the digital imager housing with the push stick housing, thereby rendering a position of the digital imager housing responsive to user manipulation of the push stick housing, wherein the flexible cable also serves as a transmission medium transmitting the serialized digital video signal at least from the digital video signal conversion device to the push stick housing.

2. The remote inspection device of claim 1, wherein the digital display housing is the push stick housing, and the flexible cable is directly connected to the digital video signal re-conversion device.

3. The remote inspection device of claim 1, wherein the digital display housing is remote from the push stick housing, and the flexible cable further extends from the push stick to the digital display housing, where it is directly connected to the digital video signal re-conversion device.

4. The remote inspection device of claim 1, wherein the digital display housing is remote from the push stick housing, and the flexible cable is connected to a wireless transmitter disposed in the push stick housing that wirelessly transmits the serialized digital video signal to a wireless receiver that is disposed in the digital display housing and connected to the digital video signal re-conversion device.

5. The remote inspection device of claim 1, wherein the digital video signal conversion device is a differential LVDS serializer converting the digital video signal to a differential LVDS signal, and the digital video signal re-conversion device is a differential LVDS de-serializer converting the differential LVDS signal back to the digital video signal.

6. The remote inspection device of claim 1, wherein the digital video signal conversion device is an analog to digital converter converting the digital video signal to an analog video signal, and the digital video signal re-conversion device is an analog to digital converter converting the analog video signal back to the digital video signal.

7. The remote inspection device of claim 1, wherein the digital video signal conversion device is a video encoder converting the digital video signal to a television broadcast signal conforming to a television broadcast format, and the digital video signal re-conversion device is a video decoder converting the television broadcast signal back to the digital video signal.

8. The remote inspection device of claim 1, wherein:

(1) the imager housing is cylindrical in shape and composed primarily of metal;

(2) two or more light sources are disposed to emit light from an end of the digital imager housing;

(3) the imaging device is disposed within the imager housing and oriented toward the light sources to;

(a) receive light passing between the light sources;

(b) capture an image of a viewing area proximate to the end of the imager housing; and

(c) convert the image into a video signal; and

(4) a heat sink member is disposed to collect thermal energy produced by the light sources and transmit the thermal energy to the metal of the imager housing for dissipation.

9. The remote inspection device of claim 8, further comprising a plurality of imager heads each having a respective imager housing and imaging device, wherein the imaging device captures an image of a viewing area proximate to a distal end of the imager housing and converts the image into a video signal, each of the imager heads is detachably attachable to the flexible cable, and at least two of the imager heads are not identical at least in terms of presence or types of light sources disposed therein.

10. The remote inspection device of claim 1, further comprising a plurality of imager heads each having a respective imager housing and imaging device, wherein the imaging device captures an image of a viewing area proximate to a distal end of the imager housing and converts the image into a video signal, each of the imager heads is detachably attachable to the flexible cable, and at least two of the imager heads are not identical at least in terms of presence or types of light sources disposed therein.

19. The imager head of claim 11, wherein the light sources emit infrared light, and imaging optics of the imaging head include a filter selectively passing infrared light to the imaging device.

11. An imager head assembly for use with a remote inspection device, the imager head assembly comprising:

a cylindrical imager housing composed primarily of metal;

two or more light sources disposed to emit light from an end of the cylindrical imager housing;

an imaging device disposed within the imager housing and oriented toward the light sources, thereby receiving light passing between the two or more light sources, capturing an image of a viewing area proximate to the end of the imager housing, and converting the image into a video signal; and

a heat sink member disposed to collect thermal energy produced by the light sources and transmit the thermal energy to the metal of the imager housing for dissipation.

12. The imager head of claim 11, wherein the light sources are superbright LEDs each emitting the light at an intensity of at least 1.5 lumens.

13. The imager head of claim 11, wherein a circuit board for powering the light sources has vias permitting transfer of thermal energy produced by the light sources to the heat sink member.

14. The imager head of claim 11, wherein a circuit board for powering the light sources has at least one thermally conductive pours on one or more surfaces of the circuit board in order to spread heat from the light sources over the one or more surfaces of the circuit board.

15. The imager head of claim 11, further comprising a light shield that prevents light from the light sources from directly impinging imaging optics of the imaging device, thereby preventing a bright spot in the image captured by the imaging device.

16. The imager head of claim 15, wherein said imaging optics adjust a focal point of the imaging device.

17. The imager head of claim 11, further comprising imaging optics adjusting a focal point of the imaging device to position the imaging device beneath the light sources, as opposed to directly between the light sources, thereby permitting a separation distance of the light sources to be less than a width of the imaging device and achieving a slimmer imaging head.

18. The imager head of claim 11, wherein the imaging device is a digital imaging device and is in communication with a digital video signal conversion device serializing the digital video signal.

20. The imager head of claim 11, wherein the light sources emit ultraviolet light, and imaging optics of the imaging head include a filter selectively passing ultraviolet light to the imaging device.

21. A remote inspection device, comprising:

a plurality of imager heads each having a cylindrical imager housing and an imaging device disposed within the imager housing, wherein the imaging device captures an image of a viewing area proximate to a distal end of the imager housing and converting the image into a video signal;

a display housing having a video display receiving a video signal from the imaging device;

a push stick housing configured to be grasped by a user; and

a flexible cable interconnecting the imager housing with the push stick housing, thereby rendering a position of the imager housing responsive to user manipulation of the push stick housing, wherein the flexible cable also serves as a transmission medium transmitting the video signal from the imaging device,

wherein each of the imager heads is detachably attachable to the flexible cable, and at least two of the imager heads are not identical in terms of presence or type of light sources disposed therein.

22. The remote inspection device of claim 21, wherein one of the imager heads has light sources and the other does not have light sources, the imager head that does not have light sources having an optical filter that selectively passes infrared light to its respective imaging device.

23. The remote inspection device of claim 21, wherein one of the imaging heads has light sources that all emit visible light, and another of the imaging heads has light sources that all selectively emit either infrared light or ultraviolet light.

24. The remote inspection device of claim 23, wherein the other imaging head has infrared light sources and an infrared filter selectively passing infrared light to its respective imaging device.

25. The remote inspection device of claim 23, wherein the other imaging head has ultraviolet light sources and an ultraviolet filter selectively passing ultraviolet light to its respective imaging device.

26. The remote inspection device of claim 21, wherein one of the imaging heads has an infrared filter selectively passing infrared light to its respective imaging device, and light sources that all selectively emit infrared light, and another of the imaging heads has an ultraviolet filter selectively passing ultraviolet light to its respective imaging device, and light sources that all selectively emit ultraviolet light.

27. The remote inspection device of claim 21, wherein the display housing has image processing software and a software toggle for switching between image processing modes, the image processing modes including at least two of:

(a) an infrared image processing mode for processing images captured by an imager head having light sources that emit infrared light;

(b) a thermal image processing mode for processing images captured by an imager head having no light sources;

(c) an ultraviolet light image processing mode for processing images captured by an imager head having light sources that emit ultraviolet light;

or

(d) a visible light image processing mode for processing images captured by an imager head having light sources that emit visible light.

28. The remote inspection device of claim 21, wherein each imaging device of the heads is a digital imaging device and is in communication with a digital video signal conversion device serializing the digital video signal within its respective head, and the video display is a digital display in communication with a digital video signal re-conversion device de-serializing the digital video signal within the display housing.

29. The remote inspection device of claim 21, wherein, for at least one of the heads:

(1) the imager housing is cylindrical in shape and composed primarily of metal;

(2) two or more light sources are disposed to emit light from an end of the digital imager housing;

(3) the imaging device is disposed within the imager housing and oriented toward the light sources to;

(a) receive light passing between the light sources;

(b) capture an image of a viewing area proximate to the end of the imager housing; and

(c) convert the image into a video signal; and

(4) a heat sink member is disposed to collect thermal energy produced by the light sources and transmit the thermal energy to the metal of the imager housing for dissipation.

30. A remote inspection device, comprising:

a plurality of imager heads each having a respective imager housing and digital imaging device disposed therein in communication with a digital video signal conversion device serializing the digital video signal, wherein the imaging device captures an image of a viewing area proximate to a distal end of the imager housing and converts the image into a video signal;

a push stick housing configured to be grasped by a user;

a digital display housing remote from the push stick housing and having a digital display in communication with a digital video signal re-conversion device de-serializing the digital video signal; and

a flexible cable interconnecting the digital imager housing with the push stick housing, thereby rendering a position of the digital imager housing responsive to user manipulation of the push stick housing, wherein the flexible cable also serves as a transmission medium transmitting the serialized digital video signal at least from the digital video signal conversion device to the push stick housing,

wherein each of the imager heads is detachably attachable to the flexible cable, and at least two of the imager heads are not identical at least in terms of presence or types of light sources disposed therein, and

wherein;

(1) at least one digital imager housing of the heads is cylindrical in shape and composed primarily of metal;

(2) one or more light sources are disposed to emit light from a distal end of that digital imager housing;

(3) its respective imaging device is disposed within that digital imager housing and oriented toward the light sources to;

(a) receive light passing between the light sources;

(b) capture an image of a viewing area proximate to the distal end of the imager housing;

(c) and convert the image into a video signal; and

(4) a heat sink member is disposed to collect thermal energy produced by the light sources and transmit the thermal energy to the metal of that imager housing for dissipation.

31. The remote inspection device of claim 30, wherein the flexible cable is connected to a wireless transmitter disposed in the push stick housing that wirelessly transmits the serialized digital video signal to a wireless receiver that is disposed in the digital display housing and connected to the digital video signal re-conversion device.

32. The remote inspection device of claim 31, wherein the wireless transmitter and wireless receiver employ at least one wireless transmission protocol selected from the following:

(1) Bluetooth;

(2) 802.11(b);

(3) 802.11(g);

(4) 802.11(n);

(5) wireless USB;

(6) Xigbee;

(7) analog;

or

(8) wireless NTSC/PAL.

33. The remote inspection device of claim 30, wherein the flexible cable further extends from the push stick housing to the digital display housing and is connected directly to the digital video signal re-conversion device.

34. The remote inspection device of claim 30, wherein the digital display has pan and zoom capability.

35. The remote inspection device of claim 30, wherein the digital display has a software toggle for switching between a color display mode and a black and white display mode.