accompanying fig1 depicts a front perspective view ( i . e ., as viewed by a passenger ) of a passenger service unit psu provided in an overhead valence assembly 10 . the valence assembly 10 provides a housing structure to contain oxygen masks ( not shown ) behind removable panels 12 . as is conventional , should the need arise to supply passengers with oxygen ( e . g ., in case of aircraft depressurization ), the oxygen masks can be deployed by the automated release of the panels 12 . the valence 10 of the psu also contains pairs of passenger interface units 14 a , 14 b in accordance with an embodiment of the present invention . as will be observed in the depicted embodiment , the units 14 a , 14 b are generally mirror images of one another for aesthetics but each respectively provides for co - located control units including a reading light unit 16 a , 16 b , an air vent unit 18 a , 18 b and a touch screen unit 20 a , 20 b positioned therebetween . an accent light 22 a , 22 b may also be provided in each of the modules 14 a , 14 b , respectively , so as to highlight the passenger - controlled reading light units 16 a , 16 b , air vent units 18 a , 18 b and touch screen units 20 a , 20 b . in the depicted embodiment , the accent light 22 a , 22 b is in the form of a generally elongated u - shaped lighting trace to provide suitable aesthetics as well as functional illumination of the co - located control units . selected ones of the passenger interface units 14 a and / or 14 b may also be provided with advisory indicators 24 a , 24 b ( e . g ., signage and / or indicia which advises the passenger of certain in - flight requirements such as no smoking , seat belt use and the like ). in the embodiment depicted , the modules 14 a , 14 b are separated from one another by an audio speaker unit 26 which may provide audio output from the on - board passenger address and on - board entertainment systems . the psu may also be provided with an auxiliary passenger interface unit 30 which unlike the unit 10 does not include a module 14 a or 14 b , but instead may include only a reading light unit 30 a and an air vent unit 30 b . the passenger interface unit 30 may be provided in those instances where spatial constraints dictate that less functionality is required . accompanying fig2 depicts an exploded rear perspective view of a representative module 14 b , it being understood that the module 14 a is substantially identical to but a mirror image of the depicted module 14 b . as is shown , the module 14 b is a laminated structure comprised primarily of a rigid exterior glass panel ( preferably high ion exchange glass panel , e . g ., hie ™ glass commercially available from abrisa technologies ) panel 40 which is bonded to an interior composite support panel 42 by way of a suitable adhesive layer ( schematically depicted by the double dash line identified by reference numeral 44 in fig2 ). according to preferred embodiments , the glass panel 40 may have a thickness in the range of about 0 . 1 mm to about 2 . 0 mm , preferably about 1 . 0 mm . the interior composite support panel 42 may have a thickness in the range of about 3 . 0 mm to about 12 . 7 mm , preferably about 6 . 35 mm . the back surface of the glass panel 40 includes an opaque painted coating layer ( schematically depicted by reference numeral 46 ) which masks visible light except in those unpainted ( and hence light transparent ) regions corresponding to a generally elongate u - shaped accent light window 46 a , a touch screen window 46 b and an advisory light window 46 c . each of the windows 46 a , 46 b and 46 c are thus aligned with am accent lighting unit 50 , a touch screen unit 52 and an advisory light unit 54 mounted physically to the support panel 42 in cut out regions 42 a , 42 b and 42 c , respectively . in a similar manner , the glass panel 42 ( and the painted layer 46 thereon ) and the support panel 42 are provided with aligned cut - out regions 60 and 62 therein so as to permit the mounting of the air vent and reading light units 18 b , 16 b , respectively . in such a manner , therefore , the air vent and reading light units 18 b , 16 b will each protrude outwardly from the front surface of the glass panel 40 so as to be capable of physical manipulation and access by the passenger . the accent light unit 50 may , for example , be an elongated strip of light - emitting diodes ( leds ) of desired color ( s ) that can be illuminated as desired to provide accent lighting to the interior cabin space in the vicinity of the passenger . the touch screen unit 52 is in and of itself conventional and is either connected to or integrally includes a suitable processor for displaying control icons corresponding to the comfort and / or entertainment units that are subject to passenger control . thus , for example , the touch screen unit 52 may display a menu of connected devices which can be touched to access submenus for further control of the selected device . the advisory light unit can simply be an on - off type of led light illumination which can then be visibly perceived through printed indicia of the layer 46 via windows 46 c thereby communication the desired passenger advisory information ( e . g ., no smoking , seat belt fastened and the like ). the touch screen unit 52 may be in the form of a monitor which provides quick feedback from the moving map or other summarized flight information ( e . g ., time to arrival , current location and / or flight data such as altitude ground speed and the like ) without disrupting on - going entertainment . alternatively ( or additionally ), the touch screen unit 52 may provide redundancy for the main function buttons in the cabin , such as the passenger &# 39 ; s table light , reading light and flight attendant call button that is displayed on the unit 52 when activated by the unit &# 39 ; s proximity sensor . the support panel 42 is preferably a relatively light weight but high strength carbon and / or glass fiber - reinforced resin composite panel . the support panel 42 may itself be formed of a lightweight but stiff composite honeycomb core structure laminated to exterior composite skin layers . the module 14 b will thus be presented to the passenger as essentially a flat glass panel representing the front surface of the glass panel 40 through which the accent light provided by accent light unit 50 , touch screen controls provided by the touch screen panel unit 52 and advisory indicators provided by the advisory light unit 54 are visible . moreover the touch screen panel 52 may be controlled by the passenger by virtue of its operative interaction with the glass panel 40 . in such a manner therefore , all of the controls for the on - board passenger comfort and entertainment systems may be co - located within the module 14 b . that is , the controls for the light via light unit 16 b , air volume via air vent 18 b and entertainment systems ( not shown ) connected operatively to the touch screen unit 52 may be operated from the same location . as a result , the passenger &# 39 ; s enjoyment of the travel experience can be heightened . it will be understood that the description provided herein is presently considered to be the most practical and preferred embodiment of the invention . thus , the invention is not to be limited to the disclosed embodiment , but on the contrary , is intended to cover various modifications and equivalent arrangements included within the spirit and scope thereof .
passenger interface units include individual passenger modules having co - located controls for passenger comfort and entertainment systems . the modules will include a glass panel having front and rear surfaces , a structural support panel bonded to the rear surface of the glass panel and a light - emitting unit supported by the support panel behind the rear surface of the glass panel . the rear surface of the glass panel may include an opaque printed coating layer having at least one unpainted region that is transparent to visible light emitted by the light - emitting unit thereby allowing the visible light to be transmitted through the glass panel and visible at the front surface thereof .