WO2011086369A1 - Method and apparatus for illuminating an object in a display case - Google Patents

Method and apparatus for illuminating an object in a display case Download PDF

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Publication number
WO2011086369A1
WO2011086369A1 PCT/GB2011/050026 GB2011050026W WO2011086369A1 WO 2011086369 A1 WO2011086369 A1 WO 2011086369A1 GB 2011050026 W GB2011050026 W GB 2011050026W WO 2011086369 A1 WO2011086369 A1 WO 2011086369A1
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WO
WIPO (PCT)
Prior art keywords
display
area
case
projector
illuminated
Prior art date
Application number
PCT/GB2011/050026
Other languages
French (fr)
Inventor
Michael Peter Brian Chaplin
Original Assignee
Click Netherfield Ltd
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 Click Netherfield Ltd filed Critical Click Netherfield Ltd
Publication of WO2011086369A1 publication Critical patent/WO2011086369A1/en

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Classifications

    • G—PHYSICS
    • G09—EDUCATION; CRYPTOGRAPHY; DISPLAY; ADVERTISING; SEALS
    • G09F—DISPLAYING; ADVERTISING; SIGNS; LABELS OR NAME-PLATES; SEALS
    • G09F3/00—Labels, tag tickets, or similar identification or indication means; Seals; Postage or like stamps
    • G09F3/02—Forms or constructions
    • G09F3/0291—Labels or tickets undergoing a change under particular conditions, e.g. heat, radiation, passage of time
    • G09F3/0294—Labels or tickets undergoing a change under particular conditions, e.g. heat, radiation, passage of time where the change is not permanent, e.g. labels only readable under a special light, temperature indicating labels and the like
    • A—HUMAN NECESSITIES
    • A47—FURNITURE; DOMESTIC ARTICLES OR APPLIANCES; COFFEE MILLS; SPICE MILLS; SUCTION CLEANERS IN GENERAL
    • A47F—SPECIAL FURNITURE, FITTINGS, OR ACCESSORIES FOR SHOPS, STOREHOUSES, BARS, RESTAURANTS OR THE LIKE; PAYING COUNTERS
    • A47F11/00—Arrangements in shop windows, shop floors or show cases
    • A47F11/06—Means for bringing about special optical effects
    • A—HUMAN NECESSITIES
    • A47—FURNITURE; DOMESTIC ARTICLES OR APPLIANCES; COFFEE MILLS; SPICE MILLS; SUCTION CLEANERS IN GENERAL
    • A47F—SPECIAL FURNITURE, FITTINGS, OR ACCESSORIES FOR SHOPS, STOREHOUSES, BARS, RESTAURANTS OR THE LIKE; PAYING COUNTERS
    • A47F3/00—Show cases or show cabinets
    • A47F3/001—Devices for lighting, humidifying, heating, ventilation
    • G—PHYSICS
    • G09—EDUCATION; CRYPTOGRAPHY; DISPLAY; ADVERTISING; SEALS
    • G09F—DISPLAYING; ADVERTISING; SIGNS; LABELS OR NAME-PLATES; SEALS
    • G09F19/00—Advertising or display means not otherwise provided for
    • G09F19/12—Advertising or display means not otherwise provided for using special optical effects
    • G09F19/18—Advertising or display means not otherwise provided for using special optical effects involving the use of optical projection means, e.g. projection of images on clouds
    • G—PHYSICS
    • G09—EDUCATION; CRYPTOGRAPHY; DISPLAY; ADVERTISING; SEALS
    • G09F—DISPLAYING; ADVERTISING; SIGNS; LABELS OR NAME-PLATES; SEALS
    • G09F27/00—Combined visual and audible advertising or displaying, e.g. for public address
    • G—PHYSICS
    • G09—EDUCATION; CRYPTOGRAPHY; DISPLAY; ADVERTISING; SEALS
    • G09F—DISPLAYING; ADVERTISING; SIGNS; LABELS OR NAME-PLATES; SEALS
    • G09F27/00—Combined visual and audible advertising or displaying, e.g. for public address
    • G09F2027/001—Comprising a presence or proximity detector
    • G—PHYSICS
    • G09—EDUCATION; CRYPTOGRAPHY; DISPLAY; ADVERTISING; SEALS
    • G09F—DISPLAYING; ADVERTISING; SIGNS; LABELS OR NAME-PLATES; SEALS
    • G09F27/00—Combined visual and audible advertising or displaying, e.g. for public address
    • G09F2027/002—Advertising message recorded in a memory device

Definitions

  • This invention relates to a method and apparatus for illuminating an object in a display case, in particular display cases used for displaying exhibits or valuable objects in museums, showrooms, shops and the like.
  • Display cases are provided in museums and retail environments to allow people to view exhibits or objects while providing security.
  • a display case must satisfy a number of requirements. It must be of a suitable size for the exhibit. It must provide an appropriate environment for the exhibit. It should be aesthetically compatible with the exhibit and its surroundings. It may include appropriate lighting to illuminate the exhibit. It may be required to provide a level of physical security. It must allow access to the exhibit when required.
  • Lighting can provide particular challenges. It can be used to enhance an exhibit, by the selection of appropriate lighting levels and colours, but this must be balanced with conservation requirements and case aesthetics. There may be limits on the heat output from illumination provided inside the case, while lighting units positioned outside the case may detract from the aesthetic appearance of the case.
  • Fluorescent lamps provide an even lighting but are available in a limited range of colours and produce high levels of ultraviolet radiation.
  • Low voltage halogen lights produce well directed illumination but run at a very high temperature, so require a well ventilated enclosure, and also produce high levels of ultraviolet radiation.
  • Fibre optic systems include a light source, which can be remote from the exhibit, light fittings, which direct the light onto the exhibit, and a fibre optic harness, which connects the source and fittings. Such systems can produce customised illumination for the exhibit, although they can be expensive and are not readily changeable when the exhibit is changed. It is an object of the present invention to provide a lighting system for a display case which is flexible, which is capable of producing closely targeted illumination, and which does not introduce high heat levels into the display case. According to a first aspect of the present invention there is provided a display system comprising:
  • a display case having at least one transparent panel
  • a projector adapted to project a computer generated display onto a display area at least partially inside the case
  • a computer adapted to control the computer generated display projected by the projector
  • the computer includes display control means adapted to control the computer generated display to create an illuminated area in the display area, the display system including display generation means for selecting at least one of the shape, size, light intensity and light colour of the illuminated area.
  • the computer can be a stand-alone computer or a processor.
  • the display area may extend outside the case so that part of the illuminated area may be outside the case.
  • the transparent panel can be a wall or part of a wall.
  • the case may include one, two or more substantially transparent walls.
  • the display system may include an object in the display area of the case and the display control means may include means to control the shape and size of the illuminated area, such that all or a selected part of the object is illuminated.
  • the shape and size of the illuminated area may be such that it
  • the display control means may comprise software operating on the computer to generate a screen image which includes a shape
  • the projector is outside the case.
  • the projector may be positioned above the case, and the display case may include a
  • the projector may be provided inside the case if the exhibited object is compatible with the heat generated from the projector.
  • the projector may be provided in an adjacent structure, for example an enclosure on the display case.
  • the projector may be provided at the bottom of the case, either inside or outside, and light from the projector may pass first to a mirror positioned above the object and be reflected onto the object.
  • the display control means may be adapted to control the computer generated display to create a text label area in the display area.
  • the display generation means may include means to select the text and/or images appearing in the text label area.
  • the display control means may be adapted to control the computer generated display to create an interpretative area in the display area.
  • the display generation means may include means to select the video, images and/or text appearing in the interpretative area.
  • One or both of the text label area and the interpretative area may include advertising material, or information relating to sponsorship of the display system or of the object displayed in the display case.
  • the display system may further comprise a user operated control panel.
  • the control panel may comprise a touch screen or user operated switches or other interactive control means.
  • the display control means may be adapted to control the computer generated display in response to operation of the control panel.
  • the display system may further comprise an audio playback device, wherein the computer includes audio control means adapted to control playback of an audio signal through the audio playback device, and wherein the display generation means includes means to select the audio signal playing in the audio playback device.
  • the audio playback device may include a speaker connected to the computer, or it may include a stand-alone device carried by a viewer, and the means to select the audio signal may include a wireless control signal sent from the computer to the audio playback device.
  • the audio signal may include advertising material, or information relating to sponsorship of the display system or of the object displayed in the display case.
  • a method of displaying an object in a display case having at least one transparent panel comprising: placing an object in a display area in the display case;
  • the shape and size of the illuminated area is selected such that a predetermined part of the object is illuminated.
  • the shape and size of the illuminated area is selected such that the shape and size of the illuminated area substantially corresponds to the shape and size of the object or part of the object to be illuminated.
  • the method includes the step of using display generation software operating on the computer to generate a screen image which includes a shape corresponding to the illuminated area.
  • the software may comprise slide presentation software, for example Microsoft Powerpoint®.
  • the computer generated display is projected onto the display area from a projector outside the case, such that light from the projector passes through a substantially transparent panel of the case.
  • the transparent panel may be a roof or part of a roof of the case.
  • the method may include the step of using display generation software operating on the computer to generate a screen image which includes a first area of text and/or images.
  • the method may include the step of controlling the computer generated display projected by the projector to create a text label area in the display area corresponding to the first area of text and/or images in the screen image.
  • the method may include selecting the text and/or images appearing in the text label area.
  • the method may include the step of using software operating on the computer to generate a screen image which includes a second area of video and/or still images and/or text.
  • the method may include the step of controlling the computer generated display projected by the projector to create an interpretative area in the display area corresponding to the second area of video and/or still images and/or text.
  • the method may include selecting the video images, still images and/or text appearing in the interpretative area.
  • One or more of the text label area, the screen image and the interpretative area may include advertising material, or information relating to
  • the method may include the step of using a user operated control panel to control the computer generated display.
  • the method may include the step of automating a sequence of lighting events, the lighting events being selected from:
  • the projection of a label in the display case may include selecting a size of the text in the label and/or selecting a language of the text in the label.
  • One or more of the lighting events may be accompanied by the
  • the audio soundtrack may be played through one or more speakers associated with the display case or may be transmitted by wire or wirelessly to a personal audio device carried by a viewer of the display case.
  • the method may include the step of controlling the playback of an audio signal through an audio playback device to play the associated audio soundtrack.
  • the audio soundtrack may include advertising material, or information relating to sponsorship of the display system or of the object displayed in the display case.
  • the method may include the step of controlling the sequence of lighting events through the user operated control panel.
  • Fig 1 shows a display system according to the present invention, incorporating a projector above a display case
  • Fig 2 shows a screen image produced by the projector of Fig 1
  • Figs 3 to 8 show the display system of Fig 1 in a sequence of six lighting events
  • Fig 9 shows a flow diagram for the control of the sequence of lighting events of Figs 3 to 8.
  • the system includes a display case 10 which has a base 12, four glass walls 14 forming transparent panels through which the object 16A (in this example a trumpet) can be viewed by a viewer 18, and a roof 20.
  • the roof 20 is either transparent or includes a transparent portion or aperture 22 toward which the lens of a projector 24 is directed.
  • the projector 24 can be placed either directly on top of the roof 20, such that the projected beam subtends a wider angle a, or can be positioned some distance above the roof 20 with a projected beam of narrower angle. If the projector 24 is positioned above the roof 20, it can be mounted separately from the display case 10, for example from the ceiling of the room in which the display case is situated.
  • the projector 24 can instead be located to one side of the display case and can project a beam of light through one of the walls 14.
  • the display case is not limited to the example described, and can be of any suitable size, shape or construction, for example glass, plywood and steel. It may have only one transparent wall, or a mixture of transparent and opaque walls, or walls which are part transparent and part opaque. It is not further described, since the method of assembly does not form part of the present invention.
  • the display case may be a Prism or VistaTM case supplied by Click Netherfield Ltd.
  • the display case includes a plinth 30 inside the case forming a display area 32 on the top surface of the plinth 30.
  • the object 16A to be exhibited is disposed in the display area 32.
  • a second object 16B (in this case a music book) is also displayed in the display area 32.
  • a text label area 34 in the display area 32 slopes towards the viewer 18, such that any text projected by the projector 24 onto the text label area 34 is visible to the viewer 18.
  • the display area may extend outside the case 10 if required; for example the text label area 34 may be positioned outside the case 10. More text label areas may be provided if required.
  • the text label areas may be horizontal, and these and other areas form interpretative areas which may be used for the projection of still or video images as well as text.
  • a shelf or base board may be used for the display area 32.
  • the plinth 30, shelf or base board may be opaque, semi- transparent, transparent or a combination thereof, and may be of any suitable material.
  • a stand 40 on which is provided an operator control panel 42.
  • This may be a touch screen or simply one or more switches.
  • the control panel 42 may include a movement detector (not shown) which determines whether a viewer is in the vicinity of the display case 12.
  • the control panel 42 may instead be mounted directly to the display case.
  • a computer 50 is connected to the projector 24 and the control panel 42.
  • the computer 50 is preferably hidden from view, for example beneath the base 12 or in a remote control room. It may be connected to the projector 24 and the control panel 42 wirelessly or by cables, as will be apparent to the person skilled in the art.
  • the computer may be a processor which is part of a purpose built display system.
  • the projector 24 is positioned such that it can illuminate the display area 32 by projecting a computer generated display onto the display area. If the computer generated display were displayed on a flat screen it would produce a screen image 60.
  • Fig 2 shows one example only of such a screen image 60. Most of the screen image is black, shown by the hatched portion 62, which produces unilluminated areas on the display area 32.
  • Part of the screen image is a complex shape 64 of a bright colour such as white or yellow. This shape is selected such that when the computer generated display is projected onto the display area 32 it produces an illuminated area which follows the outline of the object 16A to be illuminated.
  • Part of the screen image is a rectangular shape 66 of a light colour such as white or yellow which is positioned so that the corresponding illuminated area of the computer generated display illuminates the secondary object 16B.
  • a further part of the screen image is a text box 68, which is positioned so that computer generated display includes a text box projected onto the text label area 34.
  • Other shapes 64, 66 can be used.
  • a larger shape can be selected such that when the computer generated display is projected onto the display area 32 the whole of the plinth 30 or shelf is illuminated. This illuminated are may be of a lower light intensity and/or a different colour than the illuminated area which follows the outline of the object 16A to be illuminated.
  • the smaller shape 64 which illuminates the object 16A is inside the larger shape which illuminates the plinth 30.
  • the size, shape, light intensity and light colour of each illuminated area can be selected by selecting an appropriate size, shape, light intensity and light colour of each shape in the screen image 60.
  • the colour temperature of the illuminated area can be controlled by selecting an appropriate light intensity and/or light colour, thereby offering a greater degree of control than in the use of fibre optic systems.
  • the projector provides great flexibility in the illumination of the objects 16A, 16B and the projection of information onto the display area 32.
  • a series of screen images can be prepared using appropriate display generation software on the computer 50, each screen image
  • each screen image can be selected in size, shape and position so as to illuminate particular parts of the objects.
  • General slide presentation software such as Microsoft Powerpoint®, can be used to generate the screen images and hence the computer generated display, and also to function as a display control means, controlling the playback of the screen images.
  • specialist software can be used to produce real time illumination from the projector and enable real time adjustment of the size, shape, position and colour of the illuminated areas while the display area is illuminated, and subsequent recordal of the adjusted screen images for later playback, which is also controlled by the specialist software.
  • the information projected onto the display area 32 may include
  • Figs 3 to 8 show a typical sequence of lighting events, each event corresponding to a screen image generated by the computer 50 and displayed by the projector 24.
  • Fig 9 shows a flow diagram showing how the control software operating on the computer controls the sequence of lighting events LE1 to LE7.
  • Fig. 3 shows the display case without any illumination. This is the first lighting event LE1 .
  • the trumpet 16A and book 16B are not illuminated and the text label area 34 is blank. This event can be set as the default event.
  • the control software tests 102 whether a viewer 18 is near the display case 10, using a motion sensor (not shown). If there is a viewer 18 near, then the projector moves to the second lighting event LE2, shown in Fig 4.
  • the trumpet 16A is illuminated by a complex shape 64 which closely follows the outline of the trumpet 16A. If required black "holes” can be provided in the shape 64, corresponding to the "holes" in the trumpet 16A itself, to limit the illumination still further to the actual area of the object 16A. Unlike conventional lighting, there is no limit to the complexity of the illuminating shape 64.
  • the book 16B is not illuminated and the text label area 34 is blank.
  • this basic level of illumination can be set as the default lighting event.
  • the control software includes a timer 104 which determines whether a specified time (in this example 5 seconds) has elapsed since the trumpet 16A was illuminated. When 5 seconds has elapsed then the projector moves to the third lighting event LE3, shown in Fig 5.
  • the trumpet 16A remains illuminated by the shape 64, and in addition the book 16B is illuminated by a rectangular shape 66.
  • the colours of shapes 64 and 66 can be different.
  • the text label area 34 remains blank. Each lighting event can be accompanied by appropriate audio playback if required, which can be controlled by the control software.
  • the control software tests whether any of a number of possible controls are selected. If a first control 106 is selected (in this example, a control selecting English language) the projector moves to a fourth lighting event LE4, shown in Fig 6. If a second control 108 is selected (in this example, a control selecting large text for the visually impaired) the projector moves to a fifth lighting event LE5, shown in Fig 7. If a third control 1 10 is selected (in this example, a control selecting French language) the projector moves to a seventh lighting event LE7, not shown.
  • the trumpet 16A and book 16B remain illuminated by the shapes 64 and 66, and in addition the text box 68 is projected onto the text label area 34, so that the viewer 18 can read the virtual label.
  • the fifth lighting event LE5 differs only in that the text in the text box 68 is of a larger size so that the projected text on the text label area 34 can be read by a visually impaired person.
  • the seventh lighting event LE7 differs only in that the text in the text box 68 is in the French language.
  • the sequence may be controlled such as to allow further text to be displayed in the text label area upon repeated selection of the appropriate control.
  • the control software includes a further timer 1 12 which determines whether a specified time (in this example 10 seconds) has elapsed since the control 106, 108, 1 10 was selected.
  • a specified time in this example 10 seconds
  • the projector moves to the sixth lighting event LE6, shown in Fig 8.
  • a video image 36 is projected onto the display area 32.
  • the video image can be accompanied by an audio soundtrack.
  • the video image corresponds to a video clip (not shown) included in the screen display 60, and generated by the presentation software.
  • the projector reverts to the first lighting event LE1 , and the display cabinet 10 is no longer illuminated.
  • c) illumination of further objects in the display case for example a narrative might describe a number of objects 16 sequentially, and the objects can be lit sequentially to coincide with an audio narrative
  • d) projection of a label in the display case for example text in a selected language or of a selected size
  • One or more of the lighting events may be accompanied by the
  • the audio soundtrack may be stored by the computer and played through one or more speakers associated with the display case or may be transmitted by wire or wirelessly to a personal audio device carried by a viewer of the display case.
  • the computer may include audio control means adapted to control playback of an audio signal through the audio playback device.
  • the audio soundtrack may accompany a video image projected by the projector, or it may be a separate narrative.
  • the display generation software preferably allows the attachment of an audio file to the sequence of lighting events.
  • the audio soundtrack may include music, or narrated information about the object displayed in the display case.
  • the audio soundtrack may include advertising material, or information relating to sponsorship of the display system or of the object displayed in the display case.
  • the display system can interface with a commercially available audio guide system, such as AcoustiguideTM or ATS-HeritageTM, to synchronise the lighting event with audio content stored on the handset used by the audio guide system.
  • the audio content may be selected by a wireless control signal sent from the computer to the audio playback device or handset.
  • the display case may include a reflector (not shown) positioned so as to reflect light from the projector 24 onto a part of the object 16 which it is required to illuminate but which would otherwise be in shadow and would not be capable of direct illumination by the projector.
  • An appropriate shape 64 can be created in the screen image 60 so that there is no spill of light beyond the perimeter of the reflector, and all the projected light from the corresponding shape 64 is reflected by the reflector onto the object 16.
  • Preferably low reflective glass is used for the portion of the display case roof 20 or wall 14 through which the light is projected, so that the viewer is not distracted by light which does not enter the display case but is reflected from the display case.
  • a high definition projector 24 may be used where highest possible resolution of the illuminated areas is required.
  • a suitable projector is the Mitsubishi ® xd3200. Where high definition is required a suitable projector is the Epson ® EH-TW2900. Where wireless operation is required, to eliminate the need for control cables to the projector, a suitable projector is the Epson ® EB-1725. For smaller display cases where a compact projector is needed, a suitable projector is the Benq ® GP1 , or, where a short throw is required, the Sanyo ® PLC-XL50.
  • the projector 24 may be provided in an enclosure which sits above the roof 20 of the display case 10, and forms part of the display case.
  • a camera may also be provided above the roof 20, to provide an image of the display case from close to the position of the projector. If the camera is connected to the computer 50, the image can be displayed on a computer display linked to the computer 50. With appropriate software, an operator can create a screen image for a lighting event by tracing around the image of the object to be illuminated, for example with a mouse or graphic tablet.
  • the text label area 34 and any parts of the display area 32 used for displaying projected images 36 may be coated with optically reflective material, such as that used in conventional projector screens, to enhance the quality of the text and images.
  • the present invention allows precise definition of areas of illumination, to a resolution of a single pixel.
  • the invention allows text and images to be combined with illumination.
  • the invention allows the selection of a quasi-infinite range of light colours and light intensities.
  • the invention allows different parts of the display area to be illuminated by light of different colour and different intensity.
  • the invention allows custom creation of lighting events, and lighting event programs.
  • the method and display system of the present invention provide improved illumination and information for the display of exhibits in museums and galleries. They also provide improved illumination and information for the display of objects in showrooms and retail environments, particularly for high value objects which are displayed securely in the display case 10.
  • the information displayed can include advertising material, to enhance the display in the retail environment.
  • the projection and playback of the advertising material can be controlled by user interface, either through motion detectors or by means of the control panel 42.

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  • Physics & Mathematics (AREA)
  • General Physics & Mathematics (AREA)
  • Engineering & Computer Science (AREA)
  • Theoretical Computer Science (AREA)
  • Business, Economics & Management (AREA)
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Abstract

A display system for illuminated display of an object (16A, 16B) comprises a display case (10) having one or more transparent panels (14) and a projector (24) adapted to project a computer generated display onto a display area (32) inside the case. The computer (50) generates the display from a screen image and includes display control means adapted to control the display to create an illuminated area in the display area. The display system includes display generation means for selecting at least one of the shape, size, light intensity and light colour of the illuminated area, so that an object (16A, 16B) in the display area can be illuminated by an illuminated area of a tailored shape, for example the outline of the object (16A, 16B) or part of the object. The system allows precise definition of areas of illumination, to a resolution of a single pixel. It allows text and images to be combined with illumination. The display system can provide an automated sequence of lighting events.

Description

Method and apparatus for illuminating an object in a display case
This invention relates to a method and apparatus for illuminating an object in a display case, in particular display cases used for displaying exhibits or valuable objects in museums, showrooms, shops and the like.
Display cases are provided in museums and retail environments to allow people to view exhibits or objects while providing security. A display case must satisfy a number of requirements. It must be of a suitable size for the exhibit. It must provide an appropriate environment for the exhibit. It should be aesthetically compatible with the exhibit and its surroundings. It may include appropriate lighting to illuminate the exhibit. It may be required to provide a level of physical security. It must allow access to the exhibit when required.
Lighting can provide particular challenges. It can be used to enhance an exhibit, by the selection of appropriate lighting levels and colours, but this must be balanced with conservation requirements and case aesthetics. There may be limits on the heat output from illumination provided inside the case, while lighting units positioned outside the case may detract from the aesthetic appearance of the case.
A number of lighting systems have been used with display cases.
Fluorescent lamps provide an even lighting but are available in a limited range of colours and produce high levels of ultraviolet radiation. Low voltage halogen lights produce well directed illumination but run at a very high temperature, so require a well ventilated enclosure, and also produce high levels of ultraviolet radiation. Fibre optic systems include a light source, which can be remote from the exhibit, light fittings, which direct the light onto the exhibit, and a fibre optic harness, which connects the source and fittings. Such systems can produce customised illumination for the exhibit, although they can be expensive and are not readily changeable when the exhibit is changed. It is an object of the present invention to provide a lighting system for a display case which is flexible, which is capable of producing closely targeted illumination, and which does not introduce high heat levels into the display case. According to a first aspect of the present invention there is provided a display system comprising:
a display case having at least one transparent panel;
a projector adapted to project a computer generated display onto a display area at least partially inside the case; and
a computer adapted to control the computer generated display projected by the projector;
wherein the computer includes display control means adapted to control the computer generated display to create an illuminated area in the display area, the display system including display generation means for selecting at least one of the shape, size, light intensity and light colour of the illuminated area.
It is to be understood that the computer can be a stand-alone computer or a processor.
The display area may extend outside the case so that part of the illuminated area may be outside the case.
The transparent panel can be a wall or part of a wall. The case may include one, two or more substantially transparent walls. The display system may include an object in the display area of the case and the display control means may include means to control the shape and size of the illuminated area, such that all or a selected part of the object is illuminated.
The shape and size of the illuminated area may be such that it
substantially corresponds to the shape and size of the object or part of the object to be illuminated.
The display control means may comprise software operating on the computer to generate a screen image which includes a shape
corresponding to the illuminated area. Preferably the projector is outside the case. The projector may be positioned above the case, and the display case may include a
transparent panel or aperture through which light from the projector may pass to the inside of the case. Alternatively the projector may be provided inside the case if the exhibited object is compatible with the heat generated from the projector. Alternatively the projector may be provided in an adjacent structure, for example an enclosure on the display case. Alternatively the projector may be provided at the bottom of the case, either inside or outside, and light from the projector may pass first to a mirror positioned above the object and be reflected onto the object.
The display control means may be adapted to control the computer generated display to create a text label area in the display area. The display generation means may include means to select the text and/or images appearing in the text label area. The display control means may be adapted to control the computer generated display to create an interpretative area in the display area. The display generation means may include means to select the video, images and/or text appearing in the interpretative area.
One or both of the text label area and the interpretative area may include advertising material, or information relating to sponsorship of the display system or of the object displayed in the display case. The display system may further comprise a user operated control panel.
The control panel may comprise a touch screen or user operated switches or other interactive control means. The display control means may be adapted to control the computer generated display in response to operation of the control panel.
The display system may further comprise an audio playback device, wherein the computer includes audio control means adapted to control playback of an audio signal through the audio playback device, and wherein the display generation means includes means to select the audio signal playing in the audio playback device. The audio playback device may include a speaker connected to the computer, or it may include a stand-alone device carried by a viewer, and the means to select the audio signal may include a wireless control signal sent from the computer to the audio playback device. The audio signal may include advertising material, or information relating to sponsorship of the display system or of the object displayed in the display case.
According to a second aspect of the present invention there is provided a method of displaying an object in a display case having at least one transparent panel, the method comprising: placing an object in a display area in the display case;
using a projector to project a computer generated display onto the display area;
selecting at least one of the shape, size, light intensity and light colour of an illuminated area; and
controlling the computer generated display projected by the projector to create the illuminated area in the display area.
Preferably the shape and size of the illuminated area is selected such that a predetermined part of the object is illuminated.
Preferably the shape and size of the illuminated area is selected such that the shape and size of the illuminated area substantially corresponds to the shape and size of the object or part of the object to be illuminated.
Preferably the method includes the step of using display generation software operating on the computer to generate a screen image which includes a shape corresponding to the illuminated area. The software may comprise slide presentation software, for example Microsoft Powerpoint®.
Preferably the computer generated display is projected onto the display area from a projector outside the case, such that light from the projector passes through a substantially transparent panel of the case. The transparent panel may be a roof or part of a roof of the case.
The method may include the step of using display generation software operating on the computer to generate a screen image which includes a first area of text and/or images. The method may include the step of controlling the computer generated display projected by the projector to create a text label area in the display area corresponding to the first area of text and/or images in the screen image. The method may include selecting the text and/or images appearing in the text label area.
The method may include the step of using software operating on the computer to generate a screen image which includes a second area of video and/or still images and/or text.
The method may include the step of controlling the computer generated display projected by the projector to create an interpretative area in the display area corresponding to the second area of video and/or still images and/or text. The method may include selecting the video images, still images and/or text appearing in the interpretative area.
One or more of the text label area, the screen image and the interpretative area may include advertising material, or information relating to
sponsorship of the display system or of the object displayed in the display case.
The method may include the step of using a user operated control panel to control the computer generated display. The method may include the step of automating a sequence of lighting events, the lighting events being selected from:
illumination of an object in the display case;
illumination of part of an object in the display case;
illumination of a second object in the display case;
illumination of further objects in the display case; projection of a label in the display case;
projection of a still image in the display case; and
projection of a video image in the display case,
or a combination thereof.
The projection of a label in the display case may include selecting a size of the text in the label and/or selecting a language of the text in the label.
One or more of the lighting events may be accompanied by the
reproduction of an associated audio soundtrack. The audio soundtrack may be played through one or more speakers associated with the display case or may be transmitted by wire or wirelessly to a personal audio device carried by a viewer of the display case. The method may include the step of controlling the playback of an audio signal through an audio playback device to play the associated audio soundtrack.
The audio soundtrack may include advertising material, or information relating to sponsorship of the display system or of the object displayed in the display case.
The method may include the step of controlling the sequence of lighting events through the user operated control panel.
The invention will now be described, by way of example only, with reference to the accompanying drawings in which:
Fig 1 shows a display system according to the present invention, incorporating a projector above a display case; Fig 2 shows a screen image produced by the projector of Fig 1 ; Figs 3 to 8 show the display system of Fig 1 in a sequence of six lighting events; and Fig 9 shows a flow diagram for the control of the sequence of lighting events of Figs 3 to 8.
Referring to Fig 1 , there is shown a display system according to one embodiment of the invention. The system includes a display case 10 which has a base 12, four glass walls 14 forming transparent panels through which the object 16A (in this example a trumpet) can be viewed by a viewer 18, and a roof 20. The roof 20 is either transparent or includes a transparent portion or aperture 22 toward which the lens of a projector 24 is directed. The projector 24 can be placed either directly on top of the roof 20, such that the projected beam subtends a wider angle a, or can be positioned some distance above the roof 20 with a projected beam of narrower angle. If the projector 24 is positioned above the roof 20, it can be mounted separately from the display case 10, for example from the ceiling of the room in which the display case is situated.
It is to be understood that the projector 24 can instead be located to one side of the display case and can project a beam of light through one of the walls 14. The display case is not limited to the example described, and can be of any suitable size, shape or construction, for example glass, plywood and steel. It may have only one transparent wall, or a mixture of transparent and opaque walls, or walls which are part transparent and part opaque. It is not further described, since the method of assembly does not form part of the present invention. For example, the display case may be a Prism or Vista™ case supplied by Click Netherfield Ltd.
The display case includes a plinth 30 inside the case forming a display area 32 on the top surface of the plinth 30. The object 16A to be exhibited is disposed in the display area 32. A second object 16B (in this case a music book) is also displayed in the display area 32. A text label area 34 in the display area 32 slopes towards the viewer 18, such that any text projected by the projector 24 onto the text label area 34 is visible to the viewer 18. The display area may extend outside the case 10 if required; for example the text label area 34 may be positioned outside the case 10. More text label areas may be provided if required. The text label areas may be horizontal, and these and other areas form interpretative areas which may be used for the projection of still or video images as well as text.
Instead of a plinth 30, a shelf or base board may be used for the display area 32. The plinth 30, shelf or base board may be opaque, semi- transparent, transparent or a combination thereof, and may be of any suitable material.
Next to the display case 12 is a stand 40 on which is provided an operator control panel 42. This may be a touch screen or simply one or more switches. The control panel 42 may include a movement detector (not shown) which determines whether a viewer is in the vicinity of the display case 12. The control panel 42 may instead be mounted directly to the display case.
A computer 50 is connected to the projector 24 and the control panel 42. The computer 50 is preferably hidden from view, for example beneath the base 12 or in a remote control room. It may be connected to the projector 24 and the control panel 42 wirelessly or by cables, as will be apparent to the person skilled in the art. The computer may be a processor which is part of a purpose built display system.
The projector 24 is positioned such that it can illuminate the display area 32 by projecting a computer generated display onto the display area. If the computer generated display were displayed on a flat screen it would produce a screen image 60. Fig 2 shows one example only of such a screen image 60. Most of the screen image is black, shown by the hatched portion 62, which produces unilluminated areas on the display area 32. Part of the screen image is a complex shape 64 of a bright colour such as white or yellow. This shape is selected such that when the computer generated display is projected onto the display area 32 it produces an illuminated area which follows the outline of the object 16A to be illuminated. Part of the screen image is a rectangular shape 66 of a light colour such as white or yellow which is positioned so that the corresponding illuminated area of the computer generated display illuminates the secondary object 16B. A further part of the screen image is a text box 68, which is positioned so that computer generated display includes a text box projected onto the text label area 34.
Other shapes 64, 66 can be used. For example a larger shape can be selected such that when the computer generated display is projected onto the display area 32 the whole of the plinth 30 or shelf is illuminated. This illuminated are may be of a lower light intensity and/or a different colour than the illuminated area which follows the outline of the object 16A to be illuminated. In this example, in the screen image the smaller shape 64 which illuminates the object 16A is inside the larger shape which illuminates the plinth 30. The size, shape, light intensity and light colour of each illuminated area can be selected by selecting an appropriate size, shape, light intensity and light colour of each shape in the screen image 60. The colour temperature of the illuminated area can be controlled by selecting an appropriate light intensity and/or light colour, thereby offering a greater degree of control than in the use of fibre optic systems.
The projector provides great flexibility in the illumination of the objects 16A, 16B and the projection of information onto the display area 32. A series of screen images can be prepared using appropriate display generation software on the computer 50, each screen image
corresponding to a lighting event projected as a computer generated display by the projector 24, and the lighting events can be linked to form a sequential lighting performance. The illuminating shapes in each screen image can be selected in size, shape and position so as to illuminate particular parts of the objects. General slide presentation software, such as Microsoft Powerpoint®, can be used to generate the screen images and hence the computer generated display, and also to function as a display control means, controlling the playback of the screen images. Alternatively specialist software can be used to produce real time illumination from the projector and enable real time adjustment of the size, shape, position and colour of the illuminated areas while the display area is illuminated, and subsequent recordal of the adjusted screen images for later playback, which is also controlled by the specialist software.
The information projected onto the display area 32 may include
information about the object displayed in the display case, or it may include advertising material, or information relating to sponsorship of the display system or of the object displayed in the display case. The user operated control panel 42 may be used to control the computer generated display. Figs 3 to 8 show a typical sequence of lighting events, each event corresponding to a screen image generated by the computer 50 and displayed by the projector 24. Fig 9 shows a flow diagram showing how the control software operating on the computer controls the sequence of lighting events LE1 to LE7.
Fig. 3 shows the display case without any illumination. This is the first lighting event LE1 . The trumpet 16A and book 16B are not illuminated and the text label area 34 is blank. This event can be set as the default event. The control software tests 102 whether a viewer 18 is near the display case 10, using a motion sensor (not shown). If there is a viewer 18 near, then the projector moves to the second lighting event LE2, shown in Fig 4. The trumpet 16A is illuminated by a complex shape 64 which closely follows the outline of the trumpet 16A. If required black "holes" can be provided in the shape 64, corresponding to the "holes" in the trumpet 16A itself, to limit the illumination still further to the actual area of the object 16A. Unlike conventional lighting, there is no limit to the complexity of the illuminating shape 64. The book 16B is not illuminated and the text label area 34 is blank.
If required this basic level of illumination can be set as the default lighting event.
The control software includes a timer 104 which determines whether a specified time (in this example 5 seconds) has elapsed since the trumpet 16A was illuminated. When 5 seconds has elapsed then the projector moves to the third lighting event LE3, shown in Fig 5. The trumpet 16A remains illuminated by the shape 64, and in addition the book 16B is illuminated by a rectangular shape 66. The colours of shapes 64 and 66 can be different. The text label area 34 remains blank. Each lighting event can be accompanied by appropriate audio playback if required, which can be controlled by the control software.
The control software tests whether any of a number of possible controls are selected. If a first control 106 is selected (in this example, a control selecting English language) the projector moves to a fourth lighting event LE4, shown in Fig 6. If a second control 108 is selected (in this example, a control selecting large text for the visually impaired) the projector moves to a fifth lighting event LE5, shown in Fig 7. If a third control 1 10 is selected (in this example, a control selecting French language) the projector moves to a seventh lighting event LE7, not shown.
In the fourth lighting event LE4 the trumpet 16A and book 16B remain illuminated by the shapes 64 and 66, and in addition the text box 68 is projected onto the text label area 34, so that the viewer 18 can read the virtual label. The fifth lighting event LE5 differs only in that the text in the text box 68 is of a larger size so that the projected text on the text label area 34 can be read by a visually impaired person. The seventh lighting event LE7 differs only in that the text in the text box 68 is in the French language.
The sequence may be controlled such as to allow further text to be displayed in the text label area upon repeated selection of the appropriate control. Alternatively (as shown in Fig 9) the control software includes a further timer 1 12 which determines whether a specified time (in this example 10 seconds) has elapsed since the control 106, 108, 1 10 was selected. When 10 seconds has elapsed then the projector moves to the sixth lighting event LE6, shown in Fig 8. In this event, in addition to the illumination already described, a video image 36 is projected onto the display area 32. The video image can be accompanied by an audio soundtrack. The video image corresponds to a video clip (not shown) included in the screen display 60, and generated by the presentation software.
Once the control software determines 1 14 that the video image 36 has completed its playback, the projector reverts to the first lighting event LE1 , and the display cabinet 10 is no longer illuminated.
It will be understood that the above sequence has been described by way of example only and that the apparatus and method of the present invention can be adapted to include any required sequence of lighting events. The sequence can be controlled by user interface, through either motion detectors or a control panel 42, or can be set to run automatically without any user interface. A single lighting event can be used instead, without variation, if required. Typical lighting events, which may be combined into a single event or provided separately include:
a) illumination of an object in the display case (for example the
trumpet 16A or the book 16B);
b) illumination of part of an object in the display case (for example the mouthpiece of the trumpet 16A or a single page or illustration from the book 16B);
c) illumination of further objects in the display case (for example a narrative might describe a number of objects 16 sequentially, and the objects can be lit sequentially to coincide with an audio narrative); d) projection of a label in the display case (for example text in a selected language or of a selected size);
e) projection of a still image in the display case (for example an
explanatory photograph); and
f) projection of a video image in the display case (for example a short documentary film).
One or more of the lighting events may be accompanied by the
reproduction of an audio soundtrack through an audio playback device. The audio soundtrack may be stored by the computer and played through one or more speakers associated with the display case or may be transmitted by wire or wirelessly to a personal audio device carried by a viewer of the display case. The computer may include audio control means adapted to control playback of an audio signal through the audio playback device. The audio soundtrack may accompany a video image projected by the projector, or it may be a separate narrative. The display generation software preferably allows the attachment of an audio file to the sequence of lighting events. The audio soundtrack may include music, or narrated information about the object displayed in the display case. The audio soundtrack may include advertising material, or information relating to sponsorship of the display system or of the object displayed in the display case.
If required the display system can interface with a commercially available audio guide system, such as Acoustiguide™ or ATS-Heritage™, to synchronise the lighting event with audio content stored on the handset used by the audio guide system. The audio content may be selected by a wireless control signal sent from the computer to the audio playback device or handset. The display case may include a reflector (not shown) positioned so as to reflect light from the projector 24 onto a part of the object 16 which it is required to illuminate but which would otherwise be in shadow and would not be capable of direct illumination by the projector. An appropriate shape 64 can be created in the screen image 60 so that there is no spill of light beyond the perimeter of the reflector, and all the projected light from the corresponding shape 64 is reflected by the reflector onto the object 16.
Preferably low reflective glass is used for the portion of the display case roof 20 or wall 14 through which the light is projected, so that the viewer is not distracted by light which does not enter the display case but is reflected from the display case.
A high definition projector 24 may be used where highest possible resolution of the illuminated areas is required. A suitable projector is the Mitsubishi® xd3200. Where high definition is required a suitable projector is the Epson® EH-TW2900. Where wireless operation is required, to eliminate the need for control cables to the projector, a suitable projector is the Epson® EB-1725. For smaller display cases where a compact projector is needed, a suitable projector is the Benq® GP1 , or, where a short throw is required, the Sanyo® PLC-XL50.
In one embodiment the projector 24 may be provided in an enclosure which sits above the roof 20 of the display case 10, and forms part of the display case.
A camera (not shown) may also be provided above the roof 20, to provide an image of the display case from close to the position of the projector. If the camera is connected to the computer 50, the image can be displayed on a computer display linked to the computer 50. With appropriate software, an operator can create a screen image for a lighting event by tracing around the image of the object to be illuminated, for example with a mouse or graphic tablet. The text label area 34 and any parts of the display area 32 used for displaying projected images 36 may be coated with optically reflective material, such as that used in conventional projector screens, to enhance the quality of the text and images. The present invention allows precise definition of areas of illumination, to a resolution of a single pixel. There is no need to provide shades or masks to achieve a well defined shape of an illuminated area. The invention allows text and images to be combined with illumination. The invention allows the selection of a quasi-infinite range of light colours and light intensities. The invention allows different parts of the display area to be illuminated by light of different colour and different intensity. The invention allows custom creation of lighting events, and lighting event programs.
The method and display system of the present invention provide improved illumination and information for the display of exhibits in museums and galleries. They also provide improved illumination and information for the display of objects in showrooms and retail environments, particularly for high value objects which are displayed securely in the display case 10.
The information displayed can include advertising material, to enhance the display in the retail environment. The projection and playback of the advertising material can be controlled by user interface, either through motion detectors or by means of the control panel 42.
Modifications may be made without departing from the scope of the invention.

Claims

1 . A display system comprising:
a display case having at least one transparent panel;
a projector adapted to project a computer generated display onto a display area at least partially inside the case; and
a computer adapted to control the computer generated display projected by the projector;
wherein the computer includes display control means adapted to control the computer generated display to create an illuminated area in the display area;
and wherein the display system includes display generation means for selecting at least one of the shape, size, light intensity and light colour of the illuminated area.
2. A display system according to claim 1 , wherein the projector is positioned outside the case and the display case includes a transparent panel or aperture through which light from the projector may pass to the inside of the case.
3. A display system according to claim 1 or 2, wherein the display case includes an object in the display area of the case and the display control means includes means to control at least one of the shape, size, light intensity and light colour of the illuminated area, such that all or a selected part of the object is illuminated.
4. A display system according to claim 3, wherein the display control means comprises software operating on the computer to generate a screen image which includes a shape corresponding to the illuminated area.
5. A display system according to any preceding claim, wherein the display control means is adapted to control the computer generated display to create a text label area in the display area, and wherein the display generation means includes means to select the text and/or images appearing in the text label area.
6. A display system according to any preceding claim, wherein the display control means is adapted to control the computer generated display to create an interpretative area in the display area, and wherein the display generation means includes means to select the video, images and/or text appearing in the interpretative area.
7. A display system according to any preceding claim, further comprising a user operated control panel, and wherein the display control means is adapted to control the computer generated display in response to operation of the control panel.
8. A display system according to any preceding claim, further comprising an audio playback device,
wherein the computer includes audio control means adapted to control playback of an audio signal through the audio playback device, and wherein the display generation means includes means to select the audio signal playing in the audio playback device.
9. A method of displaying an object in a display case having at least one transparent panel, the method comprising:
placing an object in a display area in the display case;
using a projector to project a computer generated display onto the display area; selecting at least one of the shape, size, light intensity and light colour of an illuminated area; and
controlling the computer generated display projected by the projector to create the illuminated area in the display area.
10. A method according to claim 9, wherein the shape and size of the illuminated area is selected such that a predetermined part of the object is illuminated, and such that the shape and size of the illuminated area substantially corresponds to the shape and size of the object or part of the object to be illuminated.
1 1 . A method according to claim 9 or 10, including the step of using display generation software operating on the computer to generate a screen image which includes a shape corresponding to the illuminated area.
12. A method according to any of claims 9 to 1 1 , wherein the computer generated display is projected onto the display area from a projector outside the case, such that light from the projector passes through a substantially transparent panel or aperture of the case.
13. A method according to any of claims 9 to 12, further including the step of using display generation software operating on the computer to generate a screen image which includes a first area of text and/or images.
14. A method according to any of claims 9 to 13, further including the step of controlling the computer generated display projected by the projector to create a text label area in the display area corresponding to the first area of text and/or images in the screen image.
15. A method according to any of claims 9 to 14, further including the step of using software operating on the computer to generate a screen image which includes a second area of video and/or still images and/or text.
16. A method according to any of claims 9 to 15, further including the step of controlling the computer generated display projected by the projector to create an interpretative area in the display area corresponding to the second area of video and/or still images and/or text.
17. A method according to any of claims 9 to 16, further including the step of using a user operated control panel to control the computer generated display.
18. A method according to any of claims 9 to 17, further including the step of automating a sequence of lighting events, the lighting events being selected from the following, either alone or in simultaneous combination: illumination of an object in the display case;
illumination of part of an object in the display case;
illumination of a second object in the display case;
illumination of further objects in the display case;
projection of a label in the display case;
projection of a still image in the display case; and
projection of a video image in the display case.
19. A method according to claim 18, further including the step of controlling the sequence of lighting events through the user operated control panel.
20. A method according to claim 18 or 19, wherein at least one of the lighting events includes an associated audio soundtrack, and wherein the method includes the step of controlling the playback of an audio signal through an audio playback device to play the associated audio soundtrack.
21 . A method according to any of claims 9 to 20, further including the step of selecting a size of the text in the label and/or selecting a language of the text in the label.
PCT/GB2011/050026 2010-01-12 2011-01-10 Method and apparatus for illuminating an object in a display case WO2011086369A1 (en)

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