Head-up display device

Abstract

The present application relates to a head-up display device (12) for a vehicle (10) provided with a handlebar (14), comprising: a. A support (20), at least a portion of which, referred to as a useful portion (24), is partially reflective and has a non-zero curvature so as to form a concave mirror on the side of the rider (16); and b. A unit for emitting control information of the vehicle (10), the emitting unit and the support (20) being placed in the display device according to a positioning constraint in which: 1. The light beam emitted by the emitting unit is reflected onto a useful portion (24) of the support (20), thereby forming a virtual image in the field of view of the rider (16) at the riding position, and 2. The light beam emitted by the emitting unit is reflected onto the useful portion (24) of the support (20); and 2. The formed virtual image is the same image for the right eye and the left eye of the rider (16).

Description

Technical Field

[0001] The present application relates to a head-up display device for a vehicle with a handlebar, and also relates to a related device and a related design method. Background Art

[0002] Vehicles with handlebars, such as motorcycles or scooters, are often equipped with a control panel at the handlebars of the vehicle. Such a control panel, also known as an instrument panel or dashboard, is used to display rider information useful for driving and operating the vehicle. To this end, the control panel includes the vehicle's onboard instruments, some of which are required by law.

[0003] However, to view the control panel, the rider must take his eyes off the road, which reduces alertness and increases eye fatigue through the constant need for visual accommodation effort.

[0004] In the automotive world, it is well known that using a head-up display allows for safer viewing of useful information.

[0005] However, vehicles with handlebars, such as motorcycles or scooters, have limitations in terms of available space (especially for small-cylinder vehicles) and rider positioning, and depending on the circumstances, wearing a helmet can limit the field of view. Such limitations are not compatible with head-up displays for motor vehicles.

[0006] Documents JP S59 172086U and EP 3076221A relate to examples of prior art display devices.

[0007] Therefore, there is a need for a device that is compatible with the limitations of a vehicle having handlebars and makes it easier for the rider to see information useful in controlling the vehicle, thereby improving driving, safety and keeping the rider alert. SUMMARY OF THE INVENTION

[0009] To this end, the present specification relates to a head-up display device for a vehicle having handlebars, such as a motorcycle or a scooter, comprising:

[0010] a. a support adapted to be arranged opposite the upper body of a rider in a driving position so as to deflect the air when driving the vehicle, at least a portion of the support, called the useful portion, being partially reflective and having a non-zero curvature so as to form a concave mirror on the side of the rider,

[0011] b. A transmitting unit for the vehicle control information, the transmitting unit being adapted to emit at least one light beam, the transmitting unit having at least one operating mode, referred to as a head-up display mode

[0012] The transmitting unit and the supporting member are placed in the display device according to positioning constraints, and the positioning constraints are such that in the head-up display mode:

[0013] - reflecting the light beam emitted by the emitting unit onto the useful part of the support so as to form a virtual image in the field of vision of the rider in the driving position, and

[0014] - The virtual image formed is the same image for the rider's right and left eyes.

[0015] According to further advantageous aspects, the device comprises one or more of the following features, alone or in all technically possible combinations:

[0016] - the support has an inclination with respect to the vertical, called the main inclination, the emitting unit is inclined with respect to the support with an inclination called the relative inclination, the positioning constraint prescribing the main inclination and the relative inclination so that the light beam emitted by the emitting unit and reflected onto the useful part forms a virtual image in the field of vision of the rider in the driving position;

[0017] - the concave mirror has a vertex and a focus, the positioning constraint stipulates that the emitting unit is positioned on the rider side in the area between the vertex of the concave mirror and a reference point, the positioning constraint stipulates that the reference point is a point located between the vertex and the focus of the concave mirror, the reference point is positioned on a straight line connecting the vertex and the focus of the concave mirror, so that the virtual image formed in the field of vision of the rider in the driving position is the same image for the right eye and the left eye of the rider;

[0018] - the concave mirror has a radius of curvature, and the position of the reference point depends on the radius of curvature of the concave mirror;

[0019] -The distance between the reference point and the vertex of the concave mirror is called the useful distance, and the positioning constraint stipulates that the useful distance satisfies the following relationship:

[0020] d=-AR 2 +B.R+C

[0021] in:

[0022] d is the useful distance,

[0023] R is the radius of curvature of the concave mirror, and

[0024] A, B and C are positive numbers;

[0025] - the concave mirror has a radius of curvature which is such that the virtual image has a magnification strictly greater than 1;

[0026] - the transmitting unit has another operating mode, called direct display mode, so that the information transmitted by the transmitting unit can be directly read by the rider positioned above the transmitting unit when the rider in the driving position is looking at the transmitting unit;

[0027] - the direct display mode and the head-up display mode correspond to different relative inclinations of the transmitting unit with respect to the support;

[0028] The display device comprises a pivot mechanism adapted to pivot the transmitting unit between the heads-up display mode and the direct display mode.

[0029] The present specification also relates to a drive assembly, comprising:

[0030] a. a vehicle with handlebars, such as a motorcycle or scooter, and

[0031] b. A display device as described above, integrated into the vehicle so as to be arranged opposite the upper body of the rider in the driving position to deflect air during driving of the vehicle and display the vehicle control information by forming a virtual image in the field of vision of the rider in the driving position, the virtual image formed being the same image for the right eye and the left eye of the rider.

[0032] The present specification also relates to a method for designing a head-up display device as described above for a vehicle having handlebars, such as a motorcycle or a scooter, the method comprising the following steps:

[0033] a. obtaining rider characteristics associated with a rider in a driving position of the vehicle,

[0034] b. providing a support adapted to be placed opposite the upper body of a rider in said driving position, at least a portion of said support, called the useful portion, being partially reflective and having a non-zero curvature so as to form a concave mirror on the side of said rider, the curvature of said support being determined according to the characteristics of said rider,

[0035] c. providing a transmitting unit for the vehicle control information, the transmitting unit being adapted to transmit at least one light beam, the transmitting unit having at least one operating mode, referred to as a head-up display mode, and

[0036] d. placing the support member and the emitting unit in the display device according to a positioning constraint, wherein the positioning constraint causes the light beam emitted by the emitting unit to be reflected onto the useful portion in the head-up display mode, thereby forming a virtual image in the field of vision of the rider in the driving position, the formed virtual image being the same image for the rider's right eye and left eye. BRIEF DESCRIPTION OF THE DRAWINGS

[0037] Other features and advantages of the present application will emerge on reading the following description of embodiments of the present application given only as limiting examples and with reference to the following drawings:

[0038] -[ Figure 1 ] Figure 1 is a schematic diagram of an example vehicle having a handlebar including a head-up display device;

[0039] -[ Figure 2 ] Figure 2 is a schematic diagram of an example of a head-up display device including a support and a transmitting unit for displaying information;

[0040] -[ Figure 3 ] Figure 3 is a schematic diagram illustrating an example of the field of vision of a rider wearing a helmet, more specifically the direct field of vision and the peripheral field of vision;

[0041] -[ Figure 4 ] Figure 4 is a schematic diagram illustrating an example of positioning constraints of a support member and a launch unit;

[0042] -[ Figure 5 ] Figure 5 is a schematic diagram of another example of a head-up display device, which illustrates two operation modes of an information transmitting unit of the display device, namely, a head-up display mode and a direct display mode; and

[0043] -[ Figure 6 ] Figure 6 is a schematic diagram of another example of a display device, in which a support member and an emitting unit are fixed to each other to form a same unit. DETAILED DESCRIPTION OF THE INVENTION

[0045] Figure 1 A vehicle 10 including a heads-up display device 12 is shown in FIG.

[0046] In the depicted embodiment, vehicle 10 is a motorcycle.

[0047] In variants, the vehicle 10 is a scooter, a quadricycle, a sidecar, a gyro, a moped, a motorcycle or a bicycle, a tricycle or a cargo tricycle.

[0048] More generally, vehicle 10 is any vehicle having handlebars 14. The handlebars are components adapted to orient the front wheels or all wheels of vehicle 10 to control trajectory. Thus, the handlebars are distinct from the steering wheel of a motor vehicle.

[0049] It should be noted that in view of the previous embodiments, the vehicle 10 is different from a motor vehicle or a rail vehicle. Such a vehicle 10 may be motorized or not, and may be equipped with or not equipped with a seat. Such a vehicle 10 has two to four wheels.

[0050] When the vehicle 10 is driven by a rider 16, the device 12 is adapted to display information for controlling the vehicle 10 to the rider 16. Such control information may be, for example, navigation, safety or communication information from an onboard system in the vehicle or from an electronic device of the rider, such as a smartphone.

[0051] The device 12 comprises at least one operating mode making it possible to display information during driving in the field of vision of a rider 16 of the vehicle 10. This information is provided, for example, by onboard instruments of the vehicle 10 or is navigation, safety or communication information from the vehicle's onboard system or from an electronic device of the rider, such as a smartphone.

[0052] For example, this information relates to the speed indicator of the vehicle 10 , the energy consumption of the vehicle 10 , warnings related to malfunctions of certain components of the vehicle 10 , or navigation information (map, position, directions).

[0053] like Figure 2 In the illustrated example, the device 12 comprises a support 20 and a transmission unit 22 for control information of the vehicle 10 .

[0054] The support 20 is adapted to be arranged opposite the upper body (at least a part of the torso) of the rider 16 in the driving position, so as to deflect the air during driving of the vehicle 10. The support 20 thus has the function of a windshield. This is also called a deflector or a bubble.

[0055] The support 20 is transparent or partially transparent (completely or partially colored) or opaque.

[0056] The support 20 is made of polycarbonate, for example.

[0057] The support 20 has at least one portion, called the useful portion 24, which is partially reflective and has a non-zero curvature, forming a concave mirror on the side of the rider. This concave mirror has a vertex S, a focus F and a radius R of curvature.

[0058] In an example of one embodiment, Figure 2 As illustrated, the useful portion 24 is covered by a reflector element 26 imparting a partial reflective function. This reflector element 26 is for example a coating or treatment (obtained for example by physical or chemical deposition) or a film (laminated or fixed for example by electrostatic effect).

[0059] In a variant, the reflector element 26 is inside the useful part 24 .

[0060] exist Figure 2 In the embodiment shown, the support 20 has a non-zero curvature and the useful portion 24 has a curvature that coincides with the curvature of the support 20 (same axis of curvature). In a variant, the useful portion 24 is a local deformation of the support 20 .

[0061] exist Figure 2 In the embodiment shown, the useful portion 24 extends only over a portion of the support 20 which, in this embodiment, is used to generate a virtual image in the (direct or peripheral) field of vision of the rider in the driving position, as will be explained below. In a variant, the useful portion 24 extends over the entire support 20.

[0062] The transmitting unit 22 is adapted to display control information of the vehicle 10. The information preferably includes information provided by onboard instruments of the vehicle 10, or navigation, safety or communication information from the vehicle's onboard system or from the rider's electronic device (such as a smartphone). To this end, the transmitting unit 22 is adapted to emit at least one light beam.

[0063] The transmitting unit 22 has at least one operating mode, referred to as a head-up display mode. Preferably, in the head-up display mode, the head-up display device has a shutter 30 (in Figure 5 The shutter 30 may shield the light beam emitted by the emitting unit 22 from the rider's direct vision. Therefore, when the emitting unit 22 is a screen, in the head-up display mode, the image displayed on the emitting unit 22 is not directly visible to the rider. The emitting unit 22 and the support member 20 are positioned in the display device 12 according to the positioning constraints.

[0064] In heads-up display mode, the positioning constraints are such that:

[0065] - reflects the light beam emitted by the emitting unit 22 onto the useful part 24, thereby forming a virtual image IM in the field of vision of the rider 16 in the driving position, and

[0066] The virtual image IM formed is the same image for the right eye and the left eye of the rider 16 .

[0067] Thus, the positioning constraint allows the virtual image IM to be formed within the field of view of the rider 16 in the driving position and prevents the left-right eye double image phenomenon. The field of view considered is preferably the direct field of view C D (also called central vision), if not, at least peripheral vision C P . Direct field of view C D It is a spatial area (perspective) located in the center of the rider's field of vision. D is the remainder of the rider's field of vision. Figure 3 The examples illustrate the different fields of view for a rider wearing a helmet, such as a motorcycle rider or a scooter rider.

[0068] In one embodiment, the positioning constraints define the absolute position of the support 20 and the relative position of the launch unit 22 with respect to the support 20 .

[0069] In the following, Figure 2 As shown in the example, the main inclination α P It is defined as the inclination of the support 20 relative to the vertical plane. R It is also defined as the relative inclination of the launch unit 22 with respect to the support 20 .

[0070] In an example of an implementation, the positioning constraint specifies the main inclination α P and the relative inclination α R The light beam emitted by the emitting unit 22 and reflected onto the useful portion 24 is caused to form a virtual image IM in the field of vision of the rider 16 in the driving position.

[0071] More specifically, if Figure 4 As illustrated, the positioning constraint stipulates that the transmitting unit 22 is located on the side of the rider 16 in the zone Z1 between the vertex S of the concave mirror and the reference point P. The positioning constraint stipulates that the reference point P is a point located between the vertex S and the focus F of the concave mirror, and the reference point is located on the straight line connecting the vertex S and the focus F of the concave mirror so that the virtual image IM formed in the field of vision of the rider 16 in the driving position is the same image for the right eye and the left eye of the rider 16. Therefore, outside the zone Z1, due to the non-zero curvature of the useful portion 24, an image specific to each eye is obtained, so that a double image phenomenon occurs.

[0072] Preferably, the position of the reference point P depends on the radius of curvature R of the concave mirror.

[0073] Advantageously, the positioning constraint stipulates that the distance between the reference point P and the vertex S of the concave mirror, called the useful distance d, satisfies the following relationship:

[0074] d=-AR 2 +B.R+C

[0075] in:

[0076] d is the useful distance,

[0077] R is the radius of curvature of the concave mirror, and

[0078] A, B, and C are positive numbers.

[0079] The distance d therefore defines the maximum position which should not be exceeded in order to avoid a different image for each eye. The display device is then positioned between S and P.

[0080] The above relationship is obtained through experiments. In one embodiment, coefficient A is equal to 0.0009, coefficient B is equal to 0.228, and coefficient C is equal to 2.7046.

[0081] Preferably, the radius of curvature R of the concave mirror is such that the virtual image IM has a magnification strictly greater than 1, preferably greater than or equal to 1.5.

[0082] Preferably, no optical components are arranged between the emission unit 22 and the support 20 .

[0083] As an optional addition, Figure 5 As illustrated, the transmitting unit 22 has another operating mode, referred to as a direct display mode. The direct display mode enables information transmitted by the transmitting unit 22 to be directly read by the rider 16 located above the transmitting unit 22 when the rider 16 in the driving position is looking at the transmitting unit 22. More specifically, in the direct display mode, the light beam emitted by the transmitting unit 22 is not reflected onto the useful portion 24 of the concave mirror.

[0084] Preferably, if Figure 5 As illustrated, the direct display mode and the head-up display mode correspond to different relative inclinations of the emitting unit 22 with respect to the support 20. In particular, in the head-up display mode, the light beam emitted by the emitting unit 22 is adapted to be reflected onto the useful portion 24 of the support 20, thereby forming a virtual image IM. In the direct display mode, the light beam emitted by the emitting unit 22 is emitted in the direction of the rider 16.

[0085] Furthermore, it should be noted that when the display device 12 includes a shutter 30, the position of the shutter 30 is modified between the heads-up display mode and the direct display mode (and therefore based on the inclination of the transmitting unit 22) such that the direct image from the transmitting unit 22 is obscured from the rider in the heads-up display mode and is visible to the rider in the direct display mode.

[0086] Thus, in the direct display mode, the transmitting unit 22 can be considered as a dashboard for the vehicle 10. It is therefore even conceivable to do away with the dashboard of the vehicle.

[0087] Preferably, the display device 12 comprises a pivot mechanism, such as a pivot, which is suitable for pivoting the transmitting unit 22 between the head-up display mode and the direct display mode. The pivot mechanism is, for example, a pivot, a curved slide or a movement corresponding to a curve, or a specific kinematics.

[0088] Preferably, the direct display mode and the head-up display mode also correspond to different brightness levels (brighter for the head-up display mode) and different orientations of the (real) image generated by the transmitting unit 22 (inverted image for the head-up display mode and non-inverted image for the direct display mode).

[0089] Preferably, the emitting unit 22 is a screen adapted to display a real image from which the light beam is emitted from the emitting unit 22. The display is, for example, a liquid crystal display (LCD) or an organic light emitting diode (OLED) display.

[0090] In one variation, the transmitting unit 22 includes a single operating mode, which is a heads-up display mode, and the transmitting unit 22 is fixed relative to the support 20. In such variations, the vehicle 10 typically includes an instrument panel distinct from the display device 12 for displaying information from the onboard instruments.

[0091] Preferably, if Figure 6 As illustrated in the embodiment of FIG. 1 , the support 20 and the transmitting unit 22 form a single unit suitable for installation in the vehicle 10. Then, the transmitting unit 22 is fixed to the support 20. As a result, it is easier to install the display device 12 on the vehicle 10.

[0092] More specifically, in Figure 6 In the embodiment shown, the display device 12 comprises a holding element 31 to which the transmitting unit 22 is fixed. The holding element 31 is fixed to the support 20 by means of fasteners 32. Such a device is therefore intended to be sold as an accessory to a handlebar vehicle as a single unit and then installed in the vehicle by the manufacturer or the purchaser.

[0093] An embodiment of a design method of the head-up display device 12 as described above will now be described.

[0094] The design method comprises the step of obtaining characteristics associated with a rider 16 in a driving position in a vehicle 10. These characteristics correspond, for example, to an average rider, for example to the 85th percentile of a population. These characteristics are, for example, the rider's position in the vehicle 10 or the rider's sight direction in the driving position.

[0095] The design method comprises the step of providing a support 20 arranged to be adapted to face the upper body of the rider 16 in the riding position.

[0096] At least a portion of the support 20, called the useful portion 24, is partially reflective and has a non-zero curvature, thereby forming a concave mirror on the side of the rider. The position of the useful portion 24 and the curvature of the support 20 are determined, for example, according to the characteristics of the rider.

[0097] The design method comprises the step of providing a transmitting unit 22 for control information of the vehicle 10. The transmitting unit 22 is adapted to emit at least one light beam, the transmitting unit 22 having at least one operating mode, referred to as a heads-up display mode.

[0098] The design method includes the steps of positioning the support 20 and the emitting unit 22 in the display device 12 according to the positioning constraints. The positioning constraints are such that, in the head-up display mode, the light beam emitted by the emitting unit 22 is reflected onto the useful portion 24, thereby forming a virtual image IM in the field of vision of the rider 16 in the driving position, and the formed virtual image IM is the same image for the right eye and the left eye of the rider 16.

[0099] More specifically, the positioning constraints are as described above in the description.

[0100] In one embodiment, the position of the support member 20 relative to the vertical direction is first determined. Then the relative inclination α of the transmitting unit 22 relative to the support member 20 is determined. R , so that the virtual image IM is well formed in the field of vision of the rider 16 in the driving position. The area in which the emitting unit 22 is positioned relative to the support 20 is also determined as a function of the curvature of the useful portion 24 as described above, so that the virtual image IM formed is the same image for the right eye and the left eye of the rider 16.

[0101] Thus, the head-up display device 12 is used to display information useful for driving (controls, navigation, traffic information) in the field of vision of the rider 16 in the driving position, which facilitates the rider's access to such information.

[0102] More specifically, the non-zero curvature of the useful portion 24 makes it possible to amplify the information coming from the transmitting unit 22, which makes it possible to dispense with a transmitting unit 22 that would be too bulky for a handlebar vehicle. In addition, such a curvature helps to reduce vibrations (especially when the curvature extends over the entire support 20), which is generally more important for a handlebar vehicle than for a motor vehicle.

[0103] In particular, the positioning constraint is such that despite the curvature of the useful portion 24, the virtual image IM generated for each of the two eyes of the rider 16 is identical, thereby preventing the inconvenience associated with double images.

[0104] Those skilled in the art will appreciate that the above-described embodiments may likely be combined with one another when such combinations are compatible.

Claims

1. A head-up display device (12) for a vehicle (10) having a handlebar (14), such as a motorcycle or a scooter, comprising: a. a support (20) adapted to be arranged opposite the upper body of a rider (16) in a driving position so as to deflect the air when driving the vehicle (10), at least a portion of the support (20), referred to as the useful portion (24), being partially reflective and having a non-zero curvature so as to form a concave mirror on the side (16) of the rider, b. a transmitting unit (22) for transmitting control information of the vehicle (10), the transmitting unit (22) being adapted to transmit at least one light beam, the transmitting unit (22) having at least one operating mode, referred to as a head-up display mode; The transmitting unit (22) and the supporting member (20) are placed in the display device according to positioning constraints, wherein the positioning constraints are such that, in the head-up display mode: - reflecting the light beam emitted by the emitting unit (22) onto the useful part (24) of the support (20) so as to form a virtual image (IM) in the field of vision of the rider (16) in the driving position, and - The virtual image (IM) formed is the same image for the right and left eyes of the rider (16).

2. The device (12) according to claim 1, wherein: The support (20) has a main inclination (α) relative to the vertical direction. P ), the inclination of the emitting unit (22) relative to the supporting member (20) is called the relative inclination (α R ), the positioning constraint specifies the main inclination (α P ) and the relative inclination (α R ) so that the light beam emitted by the emitting unit (22) and reflected onto the useful part (24) forms the virtual image (IM) in the field of vision of the rider (16) in the driving position.

3. The device (12) according to claim 1 or 2, wherein: The concave mirror has a vertex (S) and a focus (F), the positioning constraint stipulates that the emitting unit (22) is placed on the rider side in the area between the vertex (S) of the concave mirror and a reference point (P), the positioning constraint stipulates that the reference point (P) is a point located between the vertex (S) and the focus (F) of the concave mirror, and the reference point (P) is positioned on a straight line connecting the vertex (S) and the focus (F) of the concave mirror, so that the virtual image (IM) formed in the field of vision of the rider (16) in the driving position is the same image for the right eye and the left eye of the rider (16).

4. The device (12) according to claim 3, wherein: The concave mirror has a radius of curvature (R), and the position of the reference point (P) depends on the radius of curvature (R) of the concave mirror.

5. The device (12) according to claim 4, wherein: The distance between the reference point (P) and the vertex (S) of the concave mirror is called the useful distance (d), and the positioning constraint stipulates that the useful distance (d) satisfies the following relationship: d=-A.R 2 +B.R+C in: d is the useful distance, R is the radius of curvature of the concave mirror, and A, B, and C are positive numbers.

6. The device (12) according to any one of claims 1 to 5, wherein the concave mirror has a radius of curvature (R) such that the virtual image (IM) has a magnification strictly greater than 1.

7. The device (12) according to any one of claims 1 to 6, wherein: The transmitting unit (22) has another operating mode, referred to as direct display mode, so that when the rider (16) in the driving position views the transmitting unit (22), information transmitted by the transmitting unit (22) can be directly read by the rider (16) located above the transmitting unit (22).

8. The device (12) according to claim 7, wherein: The direct display mode and the head-up display mode correspond to different relative inclinations of the transmitting unit (22) relative to the support (20).

9. The device (12) according to claim 8, wherein: The display device (12) comprises a pivot mechanism adapted to pivot the transmitting unit (22) between the head-up display mode and the direct display mode.

10. A drive assembly comprising: a. a vehicle (10) having a handlebar (14), such as a motorcycle or a scooter, and b. The display device (12) as described in any one of claims 1 to 9, wherein the display device (12) is integrated into the vehicle (10) so as to be arranged opposite to the upper body of the rider (16) in the driving position to deflect air during driving of the vehicle (10) and to display control information of the vehicle (10) by forming a virtual image (IM) in the field of vision of the rider (16) in the driving position, and the formed virtual image (IM) is the same image for the right eye and the left eye of the rider (16).

11. A method for designing a head-up display device (12) for a vehicle (10) having a handlebar (14), such as a motorcycle or a scooter, according to any one of claims 1 to 9, the method comprising the following steps: a. obtaining a rider characteristic associated with a rider (16) in a driving position of the vehicle (10), b. providing a support (20) adapted to be arranged opposite the upper body of the rider (16) in the driving position, at least a portion of the support (20), referred to as the useful portion (24), being partially reflective and having a non-zero curvature, thereby forming a concave mirror on the side of the rider, the curvature of the support (20) being determined according to the characteristics of the rider, c. a transmitting unit (22) for providing control information for the vehicle (10), the transmitting unit (22) being adapted to emit at least one light beam, the transmitting unit (22) having at least one operating mode, referred to as a head-up display mode, and d. placing the support member (20) and the emitting unit (22) in the display device (12) according to a positioning constraint, wherein the positioning constraint causes the light beam emitted by the emitting unit (22) to be reflected onto the useful portion (24) in the head-up display mode, so that a virtual image (IM) is formed in the field of vision of the rider (16) in the driving position, and the formed virtual image (IM) is the same image for the right eye and the left eye of the rider (16).

Images