Classifications

• • G—PHYSICS
  • G02—OPTICS
  • G02B—OPTICAL ELEMENTS, SYSTEMS OR APPARATUS
  • G02B27/00—Optical systems or apparatus not provided for by any of the groups G02B1/00 - G02B26/00, G02B30/00
  • G02B27/02—Viewing or reading apparatus
  • G02B27/028—Viewing or reading apparatus characterised by the supporting structure
• • H—ELECTRICITY
  • H04—ELECTRIC COMMUNICATION TECHNIQUE
  • H04N—PICTORIAL COMMUNICATION, e.g. TELEVISION
  • H04N13/00—Stereoscopic video systems; Multi-view video systems; Details thereof
  • H04N13/30—Image reproducers
  • H04N13/302—Image reproducers for viewing without the aid of special glasses, i.e. using autostereoscopic displays
  • H04N13/305—Image reproducers for viewing without the aid of special glasses, i.e. using autostereoscopic displays using lenticular lenses, e.g. arrangements of cylindrical lenses
• • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
  • F24—HEATING; RANGES; VENTILATING
  • F24S—SOLAR HEAT COLLECTORS; SOLAR HEAT SYSTEMS
  • F24S23/00—Arrangements for concentrating solar-rays for solar heat collectors
  • F24S23/30—Arrangements for concentrating solar-rays for solar heat collectors with lenses
• • 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
  • G09F19/14—Advertising or display means not otherwise provided for using special optical effects displaying different signs depending upon the view-point of the observer
• • 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
  • G09F27/007—Displays with power supply provided by solar cells or photocells
• • H—ELECTRICITY
  • H01—ELECTRIC ELEMENTS
  • H01L—SEMICONDUCTOR DEVICES NOT COVERED BY CLASS H10
  • H01L31/00—Semiconductor devices sensitive to infrared radiation, light, electromagnetic radiation of shorter wavelength or corpuscular radiation and specially adapted either for the conversion of the energy of such radiation into electrical energy or for the control of electrical energy by such radiation; Processes or apparatus specially adapted for the manufacture or treatment thereof or of parts thereof; Details thereof
  • H01L31/04—Semiconductor devices sensitive to infrared radiation, light, electromagnetic radiation of shorter wavelength or corpuscular radiation and specially adapted either for the conversion of the energy of such radiation into electrical energy or for the control of electrical energy by such radiation; Processes or apparatus specially adapted for the manufacture or treatment thereof or of parts thereof; Details thereof adapted as photovoltaic [PV] conversion devices
  • H01L31/054—Optical elements directly associated or integrated with the PV cell, e.g. light-reflecting means or light-concentrating means
  • H01L31/0543—Optical elements directly associated or integrated with the PV cell, e.g. light-reflecting means or light-concentrating means comprising light concentrating means of the refractive type, e.g. lenses
• • H—ELECTRICITY
  • H04—ELECTRIC COMMUNICATION TECHNIQUE
  • H04N—PICTORIAL COMMUNICATION, e.g. TELEVISION
  • H04N13/00—Stereoscopic video systems; Multi-view video systems; Details thereof
  • H04N13/30—Image reproducers
  • H04N13/324—Colour aspects
• • H—ELECTRICITY
  • H04—ELECTRIC COMMUNICATION TECHNIQUE
  • H04N—PICTORIAL COMMUNICATION, e.g. TELEVISION
  • H04N13/00—Stereoscopic video systems; Multi-view video systems; Details thereof
  • H04N13/30—Image reproducers
  • H04N13/398—Synchronisation thereof; Control thereof
• • H—ELECTRICITY
  • H04—ELECTRIC COMMUNICATION TECHNIQUE
  • H04N—PICTORIAL COMMUNICATION, e.g. TELEVISION
  • H04N2213/00—Details of stereoscopic systems
  • H04N2213/001—Constructional or mechanical details
• • Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
  • Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
  • Y02E—REDUCTION OF GREENHOUSE GAS [GHG] EMISSIONS, RELATED TO ENERGY GENERATION, TRANSMISSION OR DISTRIBUTION
  • Y02E10/00—Energy generation through renewable energy sources
  • Y02E10/40—Solar thermal energy, e.g. solar towers
• • Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
  • Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
  • Y02E—REDUCTION OF GREENHOUSE GAS [GHG] EMISSIONS, RELATED TO ENERGY GENERATION, TRANSMISSION OR DISTRIBUTION
  • Y02E10/00—Energy generation through renewable energy sources
  • Y02E10/50—Photovoltaic [PV] energy
  • Y02E10/52—PV systems with concentrators

Definitions

• the present invention relates to optical devices that give a relief aspect to image areas placed in front of a light energy sensor.
• the discrete visual integration of light energy sensors such as solar collectors, typically of dark appearance, is particularly useful in objects whose main function is to shield, at least partially, solar rays, as for example in blinds, sunshades, parasols, shade houses and others.
• a good visual and functional integration of solar collectors can also be useful in a wider range of supports, such as buildings, roofs, walls, tiles, glazing, transport vehicles, including buildings and airplanes. advertising billboards, watches, portable electronic display devices, clothing, backpacks and in general on any plan or non-plan support.
• Patent WO / 2007 / OS5721 (Sunpartner Technologies) and WO / 2010/067029 (Saint-Gobain Glass) are already known more particularly from optical devices composed of a network of rectilinear lenses and an array of image zones placed opposite each other. lenses that allow an observer to view alternately either the image reconstructed by the lenses or solar collector which is placed behind the device. The visualization of the image or of the solar collector then depends on the angle of observation with respect to the optical surface, when the lenses are rectilinear and cylindrical, this alternation repeats around every 25 °.
• the present invention aims to solve these problems and to overcome the aforementioned drawbacks of the state of the art, by proposing a new optical device structure. Rather than seeking to completely mask the sensor, this new integration approach consists in making part of its surface visible, partially covering it with an image and giving an illusion of three-dimensionality and / or relief to said system. so that the sensor becomes attractive or fun for the observer. Objects of the invention
• the object of the invention is constituted by a device as defined in the claims.
• the device according to the invention comprises at least:
• an optically structured transparent plate disposed between said external light source and said sensor, comprising a first face referred to as a "front face” that is oriented toward said external light source and a second face as “a face” back “which is oriented towards said sensor, said transparent plate being optically structured on one of its two faces at least by a plurality of optical elements rectilinear and parallel to each other;
• Said device is characterized in that the longitudinal axis of the image bands is inclined at a non-zero angle with respect to the longitudinal axis of the optical elements of the transparent plate, so that said images seen through the transparent plate appear with an aspect of relief, while the energy output of the sensor remains substantially constant regardless of the angle of incidence of said external light on the device.
• the total area of the image bands is substantially identical to the total surface of the transparency bands.
• the angle of inclination between the longitudinal axis of the lenses and the longitudinal axis of the image bands is between 35 'and 70 ", so that the appearance of said images remains substantially constant according to the viewing angle of the device, Said strips are fixed or animated picture and consist of a multitude of pixels opaque, reflective or semi-transparent, printed or electronically generated by retro-éciairés components, electroluminescent or reflective.
• Said strips are fixed or animated picture and consist of a multitude of pixels opaque, reflective or semi-transparent, printed or electronically generated by retro-éciairés components, electroluminescent or reflective.
• Said image bands may be positioned between the sensor and the rear face of the transparent plate, or downstream of said sensor, the downstream term referring to the direction of propagation of light from the external light source to the device.
• Said image bands may also be in contact with said sensor and / or said rear face of the transparent plate, or separated from these surfaces by a material of refractive index different from that of the transparent plate. In this way, it is possible to position the image strips either directly on the back of the transparent cover. either on a transparent support which is then disposed against said rear face of the transparent plate. In the latter case, said transparent support can be separated from said rear face of the transparent plate and / or said sensor either by air or by an adhesive optical refractive index close to that of the transparent plate.
• the first solution gives the possibility of replacing the image of the device without changing the transparent plate or the sensor while the second solution avoids parasitic reflections and losses of light energy at the interfaces.
• the light energy sensor is a solar collector of thermal type, photovoltaic, chemical or mixed, yaw or curved, rigid or flexible.
• this luminous energy sensor is composed of solid or semitransparent active zones contiguous or separated from each other by zones of transparency.
• the optical elements of the transparent plate are:
• the optical structuring of the transparent plate can be carried out on only one of its faces or both, with geometric shapes that can be identical or different.
• the transparent plate, the image bands and the sensor are contained in planes which are advantageously parallel to each other, but can undergo a deformation such that these plane surfaces become curved surfaces, in particular in the case of a flexible device.
• the optical elements of the transparent plate and the image bands are organized into networks of elementary structures.
• the elementary term qualifies the smallest pattern of the network which, once repeated, constitutes said network and the regular spacing between two identical points of two adjacent elementary patterns defines the pitch of the network.
• the color and shape of these patterns depend on both the color of the sensor, the shape of the network of optical elements of the transparent plate and finally of the color and the shape of the image band network,
• the transparent plate and the image bands are fixed or mobile with respect to the sensor, for example undergoing translation and / or rotation.
• the transparent plate consists of a solid, liquid or gaseous transparent material, such as mineral glass, organic glass, or a polymer of the PMMA, PET or polycaronate type, and can be flat or curved, rigid or flexible, colored in its mass or colorless.
• one of the two faces of said at least one transparent plate is covered with a functional surface having an additional function other than the simple transmission of light, for example an antireflection effect, anti-fouling or Sun Creme.
• the image bands are illuminated by one or more light sources, most of the light propagates in the thickness of the transparent plate which acts as a waveguide , or in an additional transparent plate placed upstream or downstream of the transparent plate, the upstream and downstream terms referring to the direction of propagation of the light from the light source to the device.
• the light energy sensor is a photovoltaic sensor provided with electron collection gates on the surface of said sensor, and a portion of the surface of said image bands is constituted by the visible face. electron harvesting grids.
• thee light energy sensor is replaced by any non-functional support, as a dark appearance of light energy sensor.
• any non-functional support as a dark appearance of light energy sensor.
• FIGS. 1a and 1 show schematically the structure of a device according to the state of the art
• FIGS. 2a, 2b and 2c show schematically the structure of a device according to the invention
• FIGS. 3a, 3b and 3c show in a view from above the appearance of the device according to the invention in function of various angles of observation and respective orientations of the transparent plate and the image bands;
• FIGS. 5a and 5b compare the electrical output as a function of the angle of incidence of the light for a device known from the state of the art and for the device which is the subject of the invention.
• FIG. 1 corresponds to a three-dimensional view ( Figure 1a) and a cross-sectional view ( Figure 1b) of a known device according to the patent application WO / 2007/08572.
• This device 14 comprises a transparent plate 1 optically structured and disposed between an observer 8 and a light energy sensor 5.
• the front face 2 of said transparent plate 1 is composed of a network of cylindrical rectilinear lenses of plano-convex types.
• the rear face 6, plane contains a network of image bands 3 and bands of transparency 4.
• the longitudinal axis of said bandos (3,4) is parallel to the longitudinal axis of the lenses, and the pitch of the lens array is the same as the pitch of the image band network.
• FIG. 1a the longitudinal axis of said bandos (3,4) is parallel to the longitudinal axis of the lenses, and the pitch of the lens array is the same as the pitch of the image band network.
• 1b is a cross-sectional view of the device, namely a section along a plane which contains the straight line represented by the double arrow of FIG. 1a and which is orthogonal to the longitudinal axis of the lenses of the transparent plate 1.
• a first observer 8 'positioned facing the device with an angle of observation with respect to the normal to the lenses sees a light beam T coming from an image band 3. In this position, it therefore sees in appearance the entirety of the image 10 reconstituted by the set of image bands 3.
• a second observer 8 "whose viewing angle of the device is - however, sees the light beam 7" which has been reflected on the surface of the sensor S and which passes through a region of transparency 4 of the image. In this respect, the second observer 8 "therefore only sees the apparent surface 11 of the sensor 5, generally of a dark color.
• the known device according to FIG. 1 therefore has the disadvantage of a discontinuity of the viewing ranges of the image zones 3 which cover the sensor 5, and by symmetry of the control ranges and therefore of the energy production of said sensor 5, represented in FIG. 5b and commented thereafter.
• FIG. 2 illustrates a three-dimensional view (FIG. 2a and two cross-sectional views (FIGS. 2b and 2c) of a device according to the invention.
• the device consists of a sensor 5 of the light energy coming from a source external light, a plurality of image bands 3 and transparency strips 4, and an optically structured transparent plate 1.
• the front face 2 of said transparent plate 1 is composed of a network of cylindrical rectilinear lenses, planar-convex types, which advantageously have their focal plane located in the plane of the rear face 6 of the transparent plate 1.
• the rear face 6, plane contains a network of image bands 3 of width!
• the longitudinal axis of the image bands 3 is inclined at an angle ⁇ not impaired with respect to the longitudinal axis of the lenses, as shown in Figure 2a.
• the networks of lenses and image bands 3 are defined p their steps, respectively p and d, which materialize the distance between two lenses or between two adjacent image bands 3.
• FIG. 2b is a cross-sectional view of the device according to a plane which contains the straight line represented by the double arrow of FIG. 3a and which is orthogonal to the longitudinal axis of the lenses of the transparent plate 1.
• ⁇ 2 compared to normal to the lentilies
• an observer 8 sees both light beams 7 'and 7 "respectively reflected by the sensor 5 and by image bands 3.
• the device according to the invention therefore allows an observer 8 , whatever its angle of observation, to simultaneously see fe sensor 5 and image zones 3, which eliminates discontinuities S appearance of the device known in the state of the art corresponding to Figure 1.
• the viewer 8 sees his right eye 13 'images different from those seen by his left eye 13 ", as illustrated in FIG. 2c, which allows the observer's brain 8 to recompose a three-dimensional image
• the right eye 13 * perceives both visible zones 1 of the sensor 5 and image zones 10 ', while the left eye sees only image areas 10 ". It is this phenomenon that gives the image covering the sensor 5 a look-up aspect.
• FIG. 3 illustrates in plan view three particular embodiments of the device according to the invention 16 shown diagrammatically in FIG. 2, for which the distance between two adjacent image bands 3 is equal to the pitch p between two adjacent rectilinear lenses, and FIG. width 1 of the image bands 3 is equal to half of the pitch p.
• the three illustrations correspond to different viewing angles.
• the appearance of the device seen from above changes as a function of the viewing angle ⁇ and the respective orientation of the transparent plate 1 and the image band 3, this orientation being defined by the angle d inclination a.
• An apparent image area 10 is the visual impression of the observer who sees the image bands 3 through the optically structured transparent plate 1.
• the complementary zones seen by the observer thanks to the zones of transparency 4 are called apparent zones 1 of the sensor.
• the resulting network 12b is illustrated in Figure 3b.
• an illusion of apparent image bands 10b and of apparent sensor bands 1b is obtained.
• These apparent image bands 10b are the resultant of several associated image bands 3, so that the width of said apparent image bands 10b is a multiple of the width 1 of the image bands 3.
• the width of the apparent bands 10b is 5 mm and the pitch of the network of strips is 9 mm.
• the shape of the apparent network 12c remains identical to the network 12b, but shifts in space. Indeed, the set of positions of the apparent image bands 10b observed at an angle ⁇ of 30 ° (FIG. 3b) correspond to those of the apparent sensor bands 11c at an angle ⁇ do 40 ° (FIG. 3c).
• the device according to the invention therefore makes it possible to improve the visual integration of light energy sensors 5 on supports, regardless of their angular viewing ranges, and whatever the orientation of the device with respect to the source. from light. Moreover, the method of producing such a device does not require very precise registration between the image zones 3 and the transparent plate 1, the appearance of the device does not change significantly when the angle of inclination varies from a few degrees.
• the device consists of a network of image bands 3 printed on a transparent support 9 placed between a transparent plate 1 optically structured and a sensor 5 of light energy.
• the front face 2 of said transparent plate 1 is flat whereas the rear face ⁇ is composed of a network of cylindrical rectilinear lenses.
• the longitudinal axis of the image bands 3 is inclined at an angle ⁇ not affected relative to the longitudinal axis of the lenses.
• the flatness of the front face 2 avoids clogging of the lenses and facilitates the cleaning of the external surface of the device without the need to add an additional plate that would increase the thickness and cost of the device. device.
• this surface provides the user with a smooth appearance, which is advantageous in many applications, for example a mobile phone shell.
• This aspect can be modulated by a micro structuring of the front face 2, so as to extend the range of touches.
• printing of the strips image 3 on a support 9 which is not glued to the adjacent elements of the device allows to change the appearance of image bands 3, for example their shapes or colors, at lower cost only by replacing the support 9 and not the plate 1,
• FIG. 5a schematically shows the two devices 14 and 15 respectively defined in FIGS. 1a and 2a, equipped with photovoltaic sensors 5 which are illuminated by a light source 6 whose trajectory is imposed in the plane (OXZ).
• FIG. 5b shows on the same graph the two electrical production curves of the photovoltaic sensors 6 as a function of the angle of incidence ⁇ of the light, for the known device of the state of the art 14 (continuous line) and for the device object of the invention (point-tilled line).
• the minimum output corresponds, in effect, to the light source 16 of all the image bands 3, in which configuration the photovoltaic sensor 5 receives only a small amount of light and therefore produces little.
• the maximum output for it corresponds to the illumination of a multitude of areas of the photovoltaic sensor 5 through the transparency strips 4, said sensor 5 consequently receiving a high light intensity.
• the device 15 has a small variation in energy production, which does not exceed 12% compared to the average value between the maximum production and the minimum production.
• the electrical output is therefore substantially constant as a function of the angle of incidence P of the external light 16.
• the invention achieves the goals set. It describes a device having optical characteristics to give the illusion of relief to an image placed on the surface of a light energy sensor, without the disadvantages of devices known to date.
• the device which is the subject of the invention will make it possible to improve the visual integration, in particular of light energy sensors, or other elements of the same aspect, independently
• the invention is particularly adapted to the visual integration of solar panels on the back of displays of display devices such as portable computers and billboards, on the shells of mobile phones, watches, toys, computer keyboards. , blinds, sunshades, sunshades, sunshades, shades, roofs, walls, tiles, transport vehicles, including boats and airplanes, clothing, backpacks and in general on any imaged medium, including electronic images, and on any flat or curved surface.

Landscapes

• Engineering & Computer Science (AREA)
• Physics & Mathematics (AREA)
• General Physics & Mathematics (AREA)
• Theoretical Computer Science (AREA)
• Sustainable Development (AREA)
• Life Sciences & Earth Sciences (AREA)
• Signal Processing (AREA)
• Multimedia (AREA)
• Microelectronics & Electronic Packaging (AREA)
• Condensed Matter Physics & Semiconductors (AREA)
• Marketing (AREA)
• Business, Economics & Management (AREA)
• Power Engineering (AREA)
• Computer Hardware Design (AREA)
• Optics & Photonics (AREA)
• Accounting & Taxation (AREA)
• Electromagnetism (AREA)
• Combustion & Propulsion (AREA)
• Mechanical Engineering (AREA)
• General Engineering & Computer Science (AREA)
• Chemical & Material Sciences (AREA)
• Thermal Sciences (AREA)
• Sustainable Energy (AREA)
• Optical Elements Other Than Lenses (AREA)
• Photometry And Measurement Of Optical Pulse Characteristics (AREA)
• Photovoltaic Devices (AREA)
• Devices For Indicating Variable Information By Combining Individual Elements (AREA)

Applications Claiming Priority (2)

Publications (1)

Family

ID=49779969

Family Applications (1)

Country Status (7)

Cited By (2)

Families Citing this family (3)

Family Cites Families (8)

• 2013
  • 2013-10-31 FR FR1302539A patent/FR3012625B1/fr active Active
• 2014
  • 2014-10-29 JP JP2016551056A patent/JP2017504841A/ja active Pending
  • 2014-10-29 EP EP14802934.1A patent/EP3063586A1/de not_active Withdrawn
  • 2014-10-29 US US15/032,189 patent/US20160269719A1/en not_active Abandoned
  • 2014-10-29 WO PCT/FR2014/000233 patent/WO2015063380A1/fr active Application Filing
  • 2014-10-29 KR KR1020167014301A patent/KR20160079845A/ko not_active Application Discontinuation
  • 2014-10-29 CN CN201480029266.7A patent/CN105229513A/zh active Pending

Non-Patent Citations (2)

Also Published As

Similar Documents

Legal Events