CN106257311A - Light beam deviator - Google Patents

Abstract

The invention provides a light beam direction changing device, which is suitable for a vehicle and a lens of a handheld mobile communication device. The light beam deviator comprises a base body and a triangular prism column. The seat body is suitable for being configured on the vehicle. The triangular prism column is arranged on the base body and is provided with an incident surface, an emergent surface and a mirror surface. The handheld mobile communication device is suitable for being arranged on a vehicle, so that the lens faces the emergent surface and is adjacent to the emergent surface. Each of all light rays entering the triangular prism column through the incident surface and entering the lens through the exit surface for imaging is reflected at the mirror surface and totally reflected at the incident surface in sequence on the corresponding traveling path.

Description

light redirecting device

technical field

The invention relates to a deflector, in particular to a light deflector.

Background technique

Nowadays, more and more hand-held mobile communication devices (hand-held mobile communication devices), such as mobile phones, have lenses, so that users can use the lenses to take pictures or take pictures. The things or scenery seen are recorded by taking pictures or photography.

However, when the user is engaged in leisure activities such as cycling (bicycle), if the user wishes to use the lens of the mobile phone to record the scene in front of the vehicle, the fixed lens of the current mobile phone and the orientation of the lens and the display screen The configuration is designed in such a way that it can be inconvenient for the user when making photographic records. For example, the user must hold the mobile phone with one hand so that the lens is facing forward and the display screen is placed in front of the eyes, so as to confirm the photographed picture in time, and the user's other hand must control the handlebar of the bicycle. The above-mentioned way of use can make the user who rides a bicycle have a certain degree of danger.

Contents of the invention

The present invention proposes a light redirection device, which can be installed on a vehicle, so that a hand-held mobile communication device can take pictures or take pictures in a non-hand-held manner.

An embodiment of the present invention provides a light redirecting device, which is suitable for a vehicle and a lens of a handheld mobile communication device. The light redirecting device includes a base and a triangle prism pillar. The seat body is suitable for being configured in a vehicle. The triangular prism column is disposed on the base body and has an incident surface, an exit surface and a mirror surface. The handheld mobile communication device is suitable for being configured in the vehicle, so that the lens faces the outgoing surface and is adjacent to the outgoing surface. Each of all light rays that enter the triangular prism column through the incident surface and enter the lens through the exit surface and are used for imaging sequentially reflect at the mirror surface and total reflection (total reflection) occurs at the incident surface on its corresponding traveling path (traveling path). internal reflection).

Preferably, the angle of intersection formed by the incident surface and the mirror surface is between 30 degrees and 45 degrees.

Further, an included angle formed by the mirror surface and the outgoing surface is between 87 degrees and 93 degrees.

Preferably, the included angle is 90 degrees.

Further, half of the vertical viewing angle of the lens is β, the refractive index of the triangular prism column is n1, and the intersection angle formed by the incident surface and the mirror surface is θ, then the maximum value θmax of θ satisfies the following mathematical formula:

Preferably, the length of the triangular prism column is between 18mm and 28mm.

Further, the base body includes a first carrying element and a second carrying element. The first carrier is suitable for being configured on the vehicle, and the triangular prism column is configured on the first carrier. The second bearing part is detachably arranged on the first bearing part. The handheld mobile communication device is suitable for being configured on the second carrier so that the lens faces the outgoing surface.

Preferably, the material of the triangular prism column includes one of optical glass and optical resin.

Further, the vehicle is a bicycle.

In order to make the above-mentioned content of the present invention more comprehensible, preferred embodiments are specifically cited below and described in detail in conjunction with the accompanying drawings.

Description of drawings

The present invention will be described below in conjunction with the accompanying drawings.

Fig. 1 is a three-dimensional schematic diagram of a light redirection device provided on a handle according to an embodiment of the present invention;

Fig. 2 is an exploded perspective view of the light redirecting device in Fig. 1;

FIG. 3 is a schematic side view of a user riding a vehicle;

4a is a schematic side view of the configuration relationship between the right-angled triangular prism column of FIG. 1 and the lens of the corresponding handheld mobile communication device;

Figure 4b is an enlarged schematic view of area A of Figure 4a;

FIG. 5 is a schematic diagram of the traveling path of the light beam being diverted through the right-angled triangular prism column in FIG. 4a.

Component designation description

10 users

20 vehicles

22 handles

22a Midpoint

30 Handheld Mobile Communication Devices

32 lenses

34 display screen

200 light redirecting device

210 seat body

212, 214 Carriers

212a Buckle

220 right angle triangular prism column

222 incident surface

224 exit surface

224a area

226 mirror

228 length

Area A

D1, D2 direction

L1 line of sight

L2 Imaginary Horizontal Line

L3, L4, L5 rays

L’ reference line

n ₁ Refractive index

α, γ incident angle

2β vertical viewing angle

Ω, θ intersecting angle

detailed description

The implementation of the present invention will be illustrated by specific specific examples below, and those skilled in the art can easily understand other advantages and effects of the present invention from the contents disclosed in this specification.

FIG. 1 is a three-dimensional schematic view of a light redirecting device disposed on a handle according to an embodiment of the present invention. FIG. 2 is an exploded perspective view of the light redirecting device in FIG. 1 . FIG. 3 is a schematic side view of a user riding a vehicle. Please refer to FIG. 1 , FIG. 2 and FIG. 3 , the light redirecting device 200 of this embodiment is suitable for a vehicle 20 (see FIG. 3 ) and is suitable for a lens 32 of a handheld mobile communication device 30 (see also FIG. 4 a ). In the present embodiment, the vehicle 20 is illustrated as an example with a bicycle having a handlebar 22 for steering, but it can also be a motorcycle or a beach buggy or other vehicles. It is not limited. The handheld mobile communication device 30 in this embodiment is, for example, a mobile phone, but it can also be a tablet computer, and the present invention is not limited thereto. In addition, the lens 32 and the display screen 34 of the handheld mobile communication device 30 in this embodiment are, for example, oppositely arranged.

The light redirecting device 200 of the embodiment of the present invention includes a base 210 and a right-triangle prism pillar 220 . The seat body 210 is suitable for being disposed on the steering handle 22 of the vehicle 20 , and the rectangular triangular prism column 220 is disposed on the seat body 210 . The handheld mobile communication device 30 is disposed on the handle 22 and the lens 32 of the handheld mobile communication device 30 corresponds to the right-angled triangular prism column 220 . In this embodiment, the installation position of the base body 210 and the right-angled triangular prism column 220 are used for illustration, and are not intended to limit the present invention. In another embodiment, the seat body 210 and the handheld mobile communication device 30 can be disposed at other positions of the vehicle 20 , and the right-angle triangular prism column 220 can be replaced with other types of triangular prism columns.

It is explained here that the light redirecting device 200 of this embodiment is used to transmit the scene in front of the vehicle 20 to the hand-held device in the same orientation (that is, in a manner that does not reverse up and down, and does not reverse left and right). Put 22 in the camera lens 32 of the handheld mobile communication device 30, so that the picture taken when the user 10 rides the vehicle 20 does not need to be corrected in the orientation with relevant software in addition when the user 10 rides the vehicle 20 in the future, and the user 10 rides The information displayed on the display screen 34 of the handheld mobile communication device 30 can be confirmed at any time when riding in the vehicle 20 .

In order to achieve the above purpose, it is first necessary to confirm the angle at which the light from the front needs to be turned. It can be seen from FIG. 3 that when the user 10 is riding the vehicle 20, the plane (which can be regarded as a drawing) parallel to the forward direction D1 of the vehicle 20 and passing through the midpoint 22a (see FIG. 1 ) of the handlebar 22 of the vehicle 20 3), the line of sight L1 of the user 10 looking at the handle 22 (which can be regarded as the line of sight of the user watching the display screen 34 of the handheld mobile communication device 30 arranged on the handle 22) and the imaginary horizontal line L2 ( It can be regarded as the light from the front) and the intersection angle Ω is between 60 degrees and 90 degrees. In other words, the angle at which the light from the scene in front of the vehicle 20 needs to be turned can be preset to be between 60 degrees and 90 degrees.

In addition to confirming the turning angle of the above-mentioned light, it is also necessary to ensure that the light must undergo two reflections when turning, so that the image presented by the light from the scene in front of the vehicle 20 maintains its orientation when it enters the lens 32 of the handheld mobile communication device 30 constant. The present invention will be described in detail below. Please refer to FIG. 1 and FIG. 2 , in this embodiment, the base body 210 may include a first bearing part 212 and a second bearing part 214 . The first bearing part 212 can be set on the handle 22 by sleeve, and the rectangular triangular prism column is configured on the first bearing part 212 of the base 210 . The handheld mobile communication device 30 is configured on the second carrier 214 in a close fit manner, and the second carrier 214 is detachably configured on the first carrier 212 . In this embodiment, the second carrier 214 is, for example, slidably disposed on the first carrier 212, and then locked by the buckle 212a of the first carrier 212, so that the lens 32 of the handheld mobile communication device 30 faces the right-angled triangular prism. Column 220. In another embodiment, the first carrier 212 can be arranged on the handle 22 in a screw-locked manner, and the first carrier 212 and the second carrier 214 can be integrally formed, but the above is not shown in the figure.

FIG. 4a is a schematic side view of the configuration relationship between the rectangular triangular prism column in FIG. 1 and the lens of the corresponding handheld mobile communication device. Fig. 4b is an enlarged schematic view of area A of Fig. 4a. Please refer to FIG. 1 , FIG. 2 , FIG. 4 a and FIG. 4 b , the rectangular triangular prism column 220 of this embodiment has an incident surface 222 , an outgoing surface 224 and a mirror surface 226 . The incident surface 222 of the rectangular triangular prism column 220, the outgoing surface 224 and the mirror surface 226 are parallel to the extension direction D2 (see FIG. 2 ) of the length 228 of the rectangular triangular prism column 220, and the mirror surface 226 is perpendicular to the outgoing surface 224 (that is, the mirror surface 226 and the exit surface 224 form an angle of 90 degrees). The lens 32 of the handheld mobile communication device 30 is adapted to face the outgoing surface 224 and be adjacent to the outgoing surface 224 . The lens 32 corresponds to the area 224a of the output surface 224, and the size of the area 224a depends on the vertical viewing angle of the lens 32 (details will be described later) and the distance between the lens 32 and the area 224a. The material of the right-angle triangular prism column 220 includes one of optical glass and optical resin, which is transparent, and the length 228 of the right-angle triangular prism column 220 in this embodiment is between 18 mm and 28 mm. All the light rays (such as light L3 and L4) that enter the rectangular triangular prism column 220 through the incident surface 222 and enter the lens 32 through the area 224a of the exit surface 224 for imaging are sequentially reflected at the mirror surface 226 on their corresponding travel paths and Total reflection occurs at the incident face 222 . It must be emphasized again that in this embodiment, the mirror surface 226 of the right-angle triangular prism column 220 is perpendicular to the outgoing surface 224 is only for example, and is not intended to limit the present invention. The embodiment described by using the right-angle triangular prism column 220 is only one embodiment among many embodiments of the present invention. In another embodiment, the right-angle triangular prism column 220 can be replaced with other types of triangular prism columns, for example, the angle formed by the mirror surface 226 and the exit surface 224 can be between 87 degrees and 93 degrees or can be any other angle ( For example less than 87 degrees or greater than 93 degrees).

The design of the rectangular triangular prism column 220 of this embodiment will be described below. Taking the light L3 in FIG. 4a as an example, the light L3 enters the right-angled triangular prism column 220 from the external environment (assuming air with a refractive index of 1) and passes through the incident surface 222 when refraction occurs. Since the light L3 entering the rectangular triangular prism column 220 must be totally reflected on the incident surface 222 after being reflected by the mirror 226, the incident angle α of the light L3 must satisfy the following mathematical formula:

$\mathrm{<span\; class="notranslate">\; \&alpha;</span>}<span\; class="notranslate">\; \&Greater\; Equal;</span>{\mathrm{<span\; class="notranslate">\; sin</span>}}^{<span\; class="notranslate">\; -</span>\mathrm{<span\; class="notranslate">\; 1</span>}}\frac{\mathrm{<span\; class="notranslate">\; 1</span>}}{{\mathrm{<span\; class="notranslate">\; no</span>}}_{\mathrm{<span\; class="notranslate">\; 1</span>}}}<span\; class="notranslate">\; -</span><span\; class="notranslate">\; -</span><span\; class="notranslate">\; -</span><span\; class="notranslate">\; (</span>\mathrm{<span\; class="notranslate">\; 1</span>}<span\; class="notranslate">\; )</span>$

Wherein the refractive index of the right-angle triangular prism column 220 is n1. In addition, for the light L3 to leave the rectangular triangular prism column 220 and enter the lens 32 through the exit surface 224, the light L3 must satisfy the following mathematical formula:

$\mathrm{<span\; class="notranslate">\; \&gamma;</span>}<span\; class="notranslate">\; =</span>{\mathrm{<span\; class="notranslate">\; sin</span>}}^{<span\; class="notranslate">\; -</span>\mathrm{<span\; class="notranslate">\; 1</span>}}<span\; class="notranslate">\; (</span>\frac{\mathrm{<span\; class="notranslate">\; sin</span>}\mathrm{<span\; class="notranslate">\; \&beta;</span>}}{{\mathrm{<span\; class="notranslate">\; no</span>}}_{\mathrm{<span\; class="notranslate">\; 1</span>}}}<span\; class="notranslate">\; )</span><span\; class="notranslate">\; -</span><span\; class="notranslate">\; -</span><span\; class="notranslate">\; -</span><span\; class="notranslate">\; (</span>\mathrm{<span\; class="notranslate">\; 2</span>}<span\; class="notranslate">\; )</span>$

The vertical viewing angle of the lens 32 is 2β, and the incident angle of the light L3 leaving the rectangular triangular prism column 220 after passing through the exit surface 224 is γ. In addition, according to the marking of the reference line L' in Fig. 4b, it can be seen that the relationship between the angle of intersection θ formed by the incident surface 222 and the mirror surface 226, the incident angle α, and the incident angle γ satisfies the following mathematical formula:

α+γ+θ＝90° (3)

Therefore, from mathematical formulas (1), (2) and (3), it can be seen that the intersection angle formed by the incident surface 222 and the mirror surface 226 is θ and the maximum value θmax satisfies the following mathematical formula:

The selection range of the intersection angle θ formed by the incident surface 222 and the mirror surface 226 of the rectangular triangular prism column 220 of this embodiment will be described below. FIG. 5 is a schematic diagram of the traveling path of the light beam being diverted through the right-angled triangular prism column in FIG. 4a. Please refer to FIG. 5 , which represents the traveling path of the light L5 perpendicularly incident on the incident surface 222 of the rectangular triangular prism 220 . It can be seen from FIG. 5 that the angle of intersection between the part of the light L5 that is perpendicularly incident on the incident surface 222 and the other part of the light L5 that finally exits the exit surface 224 can be roughly regarded as the intersection angle δ (which can be regarded as the angle at which the light L5 turns), and The intersection angle δ is twice the intersection angle θ formed by the incident surface 222 and the mirror surface 226 . The angle Ω required to turn the light from the scene in front of the vehicle 20 shown in FIG. 3 can be preset to be between 60 degrees and 90 degrees, so the angle δ that the light L5 turns to shown in FIG. 5 can be preset to 60 degrees. Therefore, the intersection angle θ formed by the incident surface 222 and the mirror surface 226 is between 30 degrees and 45 degrees.

Based on the above, if the vertical viewing angle 2β of the lens 32 is 40.7 degrees, then the maximum value θmax of the intersection angle θ formed by the incident surface 222 and the mirror surface 226, the refractive index n1 of the right-angled triangular prism column 220 (taking 1.5 and 1.6 as an example), and The relationship of the angle δ that the light L5 turns to is as follows:

It must be noted here that, in practical applications, the intersection angle θ formed by the incident surface 222 of the right-angle triangular prism column 220 and the mirror surface 226 can be selected as 30 degrees, because this type of right-angle triangular prism of 30 degrees-60 degrees-90 degrees Column 220 does not need to be ordered separately.

The light redirecting device of the embodiments of the present invention has the following or other advantages. In the light redirecting device of the embodiment of the present invention, all the light rays used for imaging are reflected at the mirror surface in sequence on their corresponding travel paths due to entering the triangular prism column through the incident surface and entering the lens through the exit surface, and are reflected at the incident surface. Total reflection occurs, so the light redirection device of the embodiment of the present invention transmits the scene in front of the vehicle to the camera lens of the handheld mobile communication device in the same orientation (that is, without upside-down reversal or left-right reversal), so that The picture taken by the user when riding the vehicle does not need to be corrected in the direction of the relevant software when it is played in the future.

In addition, the light redirecting device of the embodiment of the present invention can divert the horizontal light between 60 degrees and 90 degrees, so the user can confirm the handheld mobile communication with the light redirecting device of the embodiment of the present invention at any time when riding a vehicle. Information displayed on the display screen of the device.

The above descriptions are only preferred embodiments of the present invention, and are not intended to limit the patent scope of the present invention; all other equivalent changes or modifications that do not deviate from the spirit disclosed in the present invention should be included in the following within the scope of the patent application.

Claims (9)

1. A light redirection device, which is suitable for a vehicle and a lens for a handheld mobile communication device, is characterized in that the light redirection device includes: a seat suitable for being configured on the vehicle; The triangular prism column is arranged on the base body and has an incident surface, an outgoing surface and a mirror surface, wherein the handheld mobile communication device is suitable for being configured on the vehicle, so that the lens faces the outgoing surface and is adjacent to the the exit surface, and enter the triangular prism column through the incident surface and enter the lens through the exit surface for all the light rays used for imaging to occur sequentially at the mirror on its corresponding travel path reflective and total reflection occurs at the incident face. 2. The light redirecting device according to claim 1, wherein the intersection angle formed by the incident surface and the mirror surface is between 30 degrees and 45 degrees. 3 . The light redirecting device according to claim 1 , wherein the angle formed by the mirror surface and the outgoing surface is between 87 degrees and 93 degrees. 4 . 4. The light redirecting device according to claim 3, wherein the included angle is 90 degrees. 5. The light redirecting device according to claim 4, wherein half of the vertical viewing angle of the lens is β, the refractive index of the triangular prism column is n1, and the incident surface and the mirror surface The formed intersection angle is θ, then the maximum value θmax of θ satisfies the following mathematical formula: 6. The light redirecting device according to claim 1, wherein the length of the triangular prism column is between 18mm and 28mm. 7. The light redirecting device according to claim 1, wherein the base comprises: The first carrier is adapted to be configured on the vehicle, wherein the triangular prism column is configured on the first carrier; and The second carrier is detachably configured on the first carrier, wherein the handheld mobile communication device is adapted to be configured on the second carrier so that the lens faces the outgoing surface. 8. The light redirecting device according to claim 1, wherein the material of the triangular prism column comprises one of optical glass and optical resin. 9. The light redirecting device of claim 1, wherein the vehicle is a bicycle.