INDEXING AND HOLOGRAPHIC DISPLAY SYSTEM FOR MANUAL CONTROL INTERFERENCE

• US 20130033463A1
• Filed: 03/24/2011
• Published: 02/07/2013
• Est. Priority Date: 04/12/2010
• Status: Active Grant

• Current Assignee: Aptiv Technologies AG (Aptiv PLC)
• Original Assignee: Delphi Technologies, Inc. (BorgWarner Incorporated)
• Inventors: Geyl, Laurent
• Granted Patent: US 8,816,995 B2
• Time in Patent Office: Days
• US Class Current: 345/184
• CPC Class Codes: B60K 2360/20 Optical features of instruments
• CPC Class Codes: B60K 2360/25 using filters
• CPC Class Codes: B60K 2360/27 using semi-transparent optical elements
• CPC Class Codes: B60K 2360/29 Holographic features
• CPC Class Codes: B60K 2360/334 Projection means
• CPC Class Codes: B60K 2360/34 Backlit symbols
• CPC Class Codes: B60K 35/00 Instruments specially adapted for vehicles; Arrangement of instruments in or on vehicles
• CPC Class Codes: B60K 35/10 Input arrangements, i.e. from user to vehicle, associated with vehicle functions or specially adapted therefor
• CPC Class Codes: B60K 35/212 displaying on manual operation elements, e.g. on a knob
• CPC Class Codes: G01D 11/28 Structurally-combined illuminating devices
• CPC Class Codes: G01D 5/3473 Circular or rotary encoders
• CPC Class Codes: G01D 5/34776 Absolute encoders with analogue or digital scales
• CPC Class Codes: G06F 3/0362 with detection of 1D translations or rotations of an operating part of the device, e.g. scroll wheels, sliders, knobs, rollers or belts

Abstract

Manual control interface including: a movable part, a photo-detector, a movable holographic element including a first series of holograms forming coding motifs of the selection position of the movable part, characterized by the fact that the movable holographic element includes a second series of holograms forming figurative motifs representing the functions of the apparatus, the position of the movable holographic element relative to the support determining the figurative motif which is illuminated by a suitable light beam, so as to project the figurative motif corresponding to the selected function towards a display zone visible to the user.

Claims

1. A manual control interface for controlling an apparatus, in particular a motor vehicle, including:

a movable part configured to be controlled manually to a plurality of indexed selection positions in a selection direction relative to a support, wherein each selection position indicative of a selection of at least one determined function of the apparatus,

a photo-detector configured to generate position signals indicative of the position of the movable part; and

a movable holographic element coupled to the moveable part such that displacements of the movable holographic element correspond to displacements of the movable part in the selection direction, wherein the moveable holographic element includes a first series of holograms forming coding motifs corresponding to the selection position of the movable part relative to the support, wherein the coding motifs are projected towards the photo-detector when they are illuminated by a suitable light beam, wherein

the movable holographic element includes a second series of holograms forming figurative motifs configured to represent the functions of the apparatus, wherein the position of the movable holographic element relative to the support determines which figurative motif is illuminated by the suitable light beam, so as to project the figurative motif corresponding to the selected function towards a display zone visible to the user.

2. The interface as described in claim 1, wherein each hologram is formed of a matrix of elementary diffraction structures in relief at at least two levels.

3. The interface as described in claim 1, wherein the holograms are arranged in a series of cells configured to be selectively illuminated by the light beam based on the selection position of the movable part, wherein each cell simultaneously projects the coding motif and the associated figurative motif when illuminated by the same light beam.

4. The interface as described in claim 3, wherein each cell includes a plurality of identical holograms forming the selected motif configured to optimize the distribution of the luminous power in the figurative motif and in the coding motif.

5. The interface as described in claim 1, wherein the movable part is characterized as being displaced relative to the support in an activation direction distinct from the selection direction and between a neutral position and an activation position, wherein the movable holographic element is linked to the displacements of the movable part in the activation direction, wherein the coding motifs are arranged on the holographic element such that, in response to displacement to the activation position (PA), the coding motifs are projected at least partially outside the photo-detector, whereby the absence of detection of the coding motifs by the photo-detector triggers an activation signal of the selected function.

6. The interface as described in claim 1, wherein the movable part being is configured to be displaced relative to the support in an activation direction (F2) distinct from the selection direction (F1) between a neutral position (PN) and an activation position (PA), wherein displacement of the movable part in the activation direction is characterized as being independent of the displacement of the movable holographic element.

7. The interface as described in claim 1, wherein the movable part is configured to be movable in rotation about an axis in the selection direction, and the movable holographic element is carried by the movable part.

8. The interface as described in claim 7 taken in combination with claim 2, wherein the movable holographic element includes a sector of annular disc made of a transparent optical material and the holograms are formed in the thickness of the disc.

9. The interface as described in claim 7, wherein, the movable holographic element includes at least one additional figurative motif configured to indicate a state of the selected function and is arranged outside the cell corresponding to the selected function, the said additional figurative motif (MF_a, MF_b) being illuminated by an additional light source and projected towards an additional display zone.

10. The interface as described in claim 1, wherein the photo-detector and the light source producing the light beam illuminating the movable holographic element being arranged on a printed circuit board carried by the support.

11. The interface as described in claim 10, wherein the coding motif corresponding to the selected function being projected onto the photo-detector after reflection on at least one reflective element, and by at least the illuminated portion of the movable holographic element being arranged between the reflective element and the light source.

12. The interface as described in claim 1, wherein the display zone includes an optical diffusion element.

13. A method for displaying a selected function by a manual control interface as described in claim 1, said method comprising the steps:

detecting an indexed selection position after displacement of the movable part in the selection direction,

displaying the selected function in the form of a holographic figurative motif corresponding to the selection position from the light source used by the photo-detector.

14. The method for display as described in the claim 13, wherein the method further comprises detecting the state of activation of the selected function by means of the photo-detector.