EP2719581A1 - Ensemble optique pour améliorer la visibilité dans un véhicule - Google Patents

Ensemble optique pour améliorer la visibilité dans un véhicule Download PDF

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Publication number
EP2719581A1
EP2719581A1 EP20120187982 EP12187982A EP2719581A1 EP 2719581 A1 EP2719581 A1 EP 2719581A1 EP 20120187982 EP20120187982 EP 20120187982 EP 12187982 A EP12187982 A EP 12187982A EP 2719581 A1 EP2719581 A1 EP 2719581A1
Authority
EP
European Patent Office
Prior art keywords
optical assembly
aperture
optical device
vehicle
optical
Prior art date
Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Withdrawn
Application number
EP20120187982
Other languages
German (de)
English (en)
Inventor
Simon Richard Conway
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Caterpillar Inc
Original Assignee
Caterpillar Inc
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by Caterpillar Inc filed Critical Caterpillar Inc
Priority to EP20120187982 priority Critical patent/EP2719581A1/fr
Publication of EP2719581A1 publication Critical patent/EP2719581A1/fr
Withdrawn legal-status Critical Current

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Classifications

    • E—FIXED CONSTRUCTIONS
    • E02—HYDRAULIC ENGINEERING; FOUNDATIONS; SOIL SHIFTING
    • E02F—DREDGING; SOIL-SHIFTING
    • E02F9/00—Component parts of dredgers or soil-shifting machines, not restricted to one of the kinds covered by groups E02F3/00 - E02F7/00
    • E02F9/16—Cabins, platforms, or the like, for drivers
    • E02F9/163—Structures to protect drivers, e.g. cabins, doors for cabins; Falling object protection structure [FOPS]; Roll over protection structure [ROPS]
    • E—FIXED CONSTRUCTIONS
    • E02—HYDRAULIC ENGINEERING; FOUNDATIONS; SOIL SHIFTING
    • E02F—DREDGING; SOIL-SHIFTING
    • E02F9/00—Component parts of dredgers or soil-shifting machines, not restricted to one of the kinds covered by groups E02F3/00 - E02F7/00
    • E02F9/26—Indicating devices

Definitions

  • This disclosure relates generally to optical devices that deflect fields of view and in particular to an optical assembly for deflecting the field of view in a work vehicle to allow an operator to view areas that are obstructed.
  • the field of view in a work vehicle may be obscured by the frames that bound the windscreen and window apertures and by the structures of the vehicle body.
  • the frames of the apertures may constitute a termination or interruption in the available visibility.
  • the structure of the vehicle body for example the engine compartment of a construction vehicle, may also constitute a termination or interruption in the available visibility.
  • the drive of the vehicle may in most circumstances compensate for the obstruction by altering position thereby varying the field of view through the apertures. There nay be circumstances where the observer's ability to change his field of view is limited.
  • the present disclosure is directed, at least in part, to improving or overcoming one or more aspects of the prior art system.
  • the present invention seeks to provide an assembly by which the field of view through an aperture that is obscured may be deflected for a fixed viewing position.
  • the present disclosure describes an optical assembly for improving visibility in a work vehicle, the optical assembly comprising an aperture for viewing operation of a worktool; and an optical device disposed at the aperture for diverting light rays from a visually obstructed region to the field of view of the operator.
  • This disclosure generally relates to an optical assembly 10 for diverting light passing into a work vehicle 14.
  • the optical assembly 10 may be suitably disposed in the vehicle for improving visibility for the operator of the work vehicle.
  • Optical assembly 10 may be disposed in the vehicle for improving visibility of work operations.
  • the optical assembly 10 may improve visibility in a work vehicle 14 and may comprise an aperture 16 for viewing operation of a worktool 18 and an optical device 12 disposed at the aperture for diverting light rays 20 from a visually obstructed region to the field of view of the operator.
  • the aperture 16 may be located in a vehicle cabin 22.
  • the aperture 16 may be defined by structural frames of the vehicle 14.
  • the aperture 16 may be provided at the forward region of the vehicle. Light rays 20 from the front of the vehicle 14 may enter the vehicle cabin 22 through the aperture 16.
  • the optical assembly 10 may comprise a windscreen disposed at the aperture 16.
  • the windscreen may be configured to fit in the aperture 16.
  • the windscreen may include a central region through which light may pass substantially without any deviation.
  • the optical device 12 may be coupled to the windscreen.
  • the optical device 12 may be a separate element that may be disposed on the windscreen relative to a peripheral region.
  • the optical device 12 may be chemically mounted to the windscreen.
  • the optical device 12 may be mechanically mounted to the windscreen.
  • the optical device 12 may be supported in a supporting device at the windscreen.
  • the optical device 12 may be incorporated into windscreen relative to a peripheral region.
  • the optical device 12 may form a part of the windscreen.
  • the optical device 12 may be positioned within an opening formed in the windscreen.
  • optical device 12 may be positioned such that light rays 20 pass through the windscreen prior to passing through the optical device 12. In an embodiment, optical device 12 may be positioned such that light rays 20 may pass through the optical device 12 to enter the cabin 22.
  • peripheral region this is to be understood as the regions adjacent the frames of the aperture. With the aperture defined by frames, the "peripheral region” should be understood as referring to one side of the aperture adjacent a frame and not to all sides of the aperture. For example in a four-sided aperture, the "peripheral region” may be a region along one side thereof and not the remaining three sides of the aperture.
  • the optical device 12 may be disposed adjacent the upper peripheral region of the aperture.
  • the optical device 12 may be disposed so as to divert the light from an obstructed region to the field of sight of the operator.
  • the optical device 12 may be aligned with the seating position of the operator.
  • a portion of the optical device 12 may be provided.
  • the portion of the optical device 12 may be suitably dimensioned for the operator to visualize worktool 18 .
  • the optical device 12 may be located at the upper region of the windscreen. In an embodiment, the optical device 12 may be located at the upper region of the front windscreen. In an embodiment, the optical device 12 may be located at the upper region of the rear windscreen.
  • Light rays 20 arriving from a visually obstructed region may be diverted through an angle by optical device 12 so that the direction of the diverted light 21 may be closer to the central region of the aperture 16.
  • the optical device 12 may cause the light rays 20 to bend at the peripheral region.
  • the light rays 20 may bend to become diverted light rays 21 as they pass through the optical device 12 from the visually obstructed region towards the operator.
  • the angle through which the light rays 21 are diverted may be greater closer to the edge of the peripheral region adjacent to the frame of the aperture. In an embodiment, the angles through which the light rays 21 are diverted may preferably decreases away from the edge of the peripheral region adjacent to the frame of the aperture.
  • the diversion of the light rays 21 may be achieved through refraction.
  • the angle through which the light rays 21 are diverted may be greater closer to the edge of the optical device 12.
  • the angles through which the light rays 21 are diverted may preferably decreases away from the edge of the optical device 12 towards the centre.
  • the optical device 12 may vary the diversion of the light rays 21 over the width thereof. Optical device 12 may preferably introduce no step-change in the diversion of the light diversion rays 12 at its edge adjacent to the frame of the aperture 16.
  • the optical device 12 may have not have an inclination of the surfaces (that is the surfaces are substantially parallel) at a point inward from the frame of the aperture 16.
  • the inclination of the surfaces of the optical device 12 may increase progressively towards the frame.
  • the optical device 12 may be a negative lens.
  • the optical device 12 may be a cylindrical negative lens.
  • the optical device 12 may be mounted to the vehicle frame in the vehicle cabin 22.
  • a supporting body may be mounted to the vehicle frame to hold the optical device 12 in position.
  • the optical device 12 may be a Fresnel lens.
  • a side of the Fresnel lens may be a plane, smooth flat front face and a serrated rear face comprising a plurality of prism-like facets. The facets may be separated.
  • the Fresnel lens may have a pattern defined by the serrated rear surface.
  • At least a portion of a Fresnel lens may be disposed at the aperture 16.
  • the portion of the Fresnel lens that diverts the light rays 20 downwards may be positioned at the top of the windscreen.
  • the portion of the Fresnel lens may be positioned at the top centre of the windscreen.
  • a whole Fresnel lens may be positioned on the windscreen. The operator may use a selected portion of the Fresnel lens to obtain the desired view of the worktool 18 .
  • the Fresnel lens may be disposed in a fixed relative positional relationship with respect to a peripheral region of the aperture 16.
  • the Fresnel lens may be disposed in other areas, for example at window apertures.
  • optical assembly 10 for improving visibility for an operator of a work vehicle.
  • the optical assembly 10 may improve visibility of the fork tips and/ or stabiliser feet from the cabin of Backhoe Loader.
  • the optical assembly 10 may be used where components and structures of the vehicle frames, that are positioned or dimensioned according to work requirements, may obstruct visibility of the operator. Obstruction to the field of view may occur particularly at the forward region of the vehicle.
  • the forward region of the work vehicle may have the engine compartment.
  • the forward viewing region may be restricted between the upper frame of the windscreen aperture and the upper portion of the engine compartment.
  • the operator of the work vehicle may partially overcome the obstruction by repositioning his field of view. However, any repositioning may require time and may not fully compensate for the obstruction.
  • the optical assembly 10 may divert light passing through an aperture provided in the vehicle cabin.
  • the optical assembly 10 may divert light at a peripheral region of the aperture.
  • the optical assembly 10 may include the application of the optical device 12 to the vehicle windscreen at a region where light from an obstructed region may be diverted to the field of view of the operator. Through the optical assembly 10 it may be possible for the operatore to effectively to have a field of view in which the obscuration effect vehicle components or structures may be compensated and, in some cases, eliminated.
  • references signs have been included for the sole purpose of increasing the intelligibility of the claims and accordingly, neither the reference signs nor their absence have any limiting effect on the technical features as described above or on the scope of any claim elements.

Landscapes

  • Engineering & Computer Science (AREA)
  • Mining & Mineral Resources (AREA)
  • Civil Engineering (AREA)
  • General Engineering & Computer Science (AREA)
  • Structural Engineering (AREA)
  • Lighting Device Outwards From Vehicle And Optical Signal (AREA)
EP20120187982 2012-10-10 2012-10-10 Ensemble optique pour améliorer la visibilité dans un véhicule Withdrawn EP2719581A1 (fr)

Priority Applications (1)

Application Number Priority Date Filing Date Title
EP20120187982 EP2719581A1 (fr) 2012-10-10 2012-10-10 Ensemble optique pour améliorer la visibilité dans un véhicule

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
EP20120187982 EP2719581A1 (fr) 2012-10-10 2012-10-10 Ensemble optique pour améliorer la visibilité dans un véhicule

Publications (1)

Publication Number Publication Date
EP2719581A1 true EP2719581A1 (fr) 2014-04-16

Family

ID=47080287

Family Applications (1)

Application Number Title Priority Date Filing Date
EP20120187982 Withdrawn EP2719581A1 (fr) 2012-10-10 2012-10-10 Ensemble optique pour améliorer la visibilité dans un véhicule

Country Status (1)

Country Link
EP (1) EP2719581A1 (fr)

Citations (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4688905A (en) * 1984-04-06 1987-08-25 Makoto Okamura Viewer
WO1996015009A1 (fr) * 1994-11-11 1996-05-23 Steven Brown Dispositif de securite
WO2001026930A1 (fr) * 1999-10-08 2001-04-19 Bending Light Ltd Système optique
EP1193088A1 (fr) * 2000-09-29 2002-04-03 Martin Schorning Aide à la vision pour portes et fenêtres
US20050111114A1 (en) * 2003-11-20 2005-05-26 Bode Shane E. Vehicle window providing multiple operator viewing angles

Patent Citations (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4688905A (en) * 1984-04-06 1987-08-25 Makoto Okamura Viewer
WO1996015009A1 (fr) * 1994-11-11 1996-05-23 Steven Brown Dispositif de securite
WO2001026930A1 (fr) * 1999-10-08 2001-04-19 Bending Light Ltd Système optique
EP1193088A1 (fr) * 2000-09-29 2002-04-03 Martin Schorning Aide à la vision pour portes et fenêtres
US20050111114A1 (en) * 2003-11-20 2005-05-26 Bode Shane E. Vehicle window providing multiple operator viewing angles

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