JP2017047695A - Optical device - Google Patents

Abstract

PROBLEM TO BE SOLVED: To provide an optical device having a high degree of freedom in design.SOLUTION: An optical device (20) includes: a half mirror (60) which transmits a part of light emitted from a light source (80) and reflects the remainder; a full mirror (70) which reflects the light reflected by the half mirror (60) toward the half mirror (60); and a support member (50) which supports the half mirror (60) and the full mirror (70). The half mirror (60) and the full mirror (70) are arranged in parallel to each other and in a state of being inclined at a prescribed angle to an optical axis (CL1) of the light emitted from the light source (80).SELECTED DRAWING: Figure 2

Description

  The present invention relates to an improved optical device.

  An optical device may be used in order to improve the design of the in-vehicle component. The optical device is built in, for example, an instrument. As a conventional technique related to such an optical device, there is a technique disclosed in Patent Document 1.

  The invention disclosed in Patent Document 1 will be described based on FIGS. 5 and 6. FIG. 5 corresponds to FIG. FIG. 6 corresponds to FIG. In addition, the code | symbol was reassigned suitably.

  Please refer to FIG. As shown in Patent Document 1, an optical device 110 is formed on a light source 111, an inclined plate 112 having an inclined surface 112a inclined with respect to the optical axis CL2 of the light source 111, and an inclined surface 112a of the inclined plate 112. And the full mirror 114 formed on the surface of the inclined plate 112 facing the half mirror 113. A part of the full mirror 114 is a light transmitting portion 114 a that can transmit light emitted from the light source 111.

  The light emitted from the light source 111 passes through the light transmission part 114 a and the inclined plate 112 and reaches the half mirror 113. Part of the light is transmitted through the half mirror 113, and the remaining part is reflected toward the full mirror 114 by the half mirror 113. The light reflected toward the full mirror 114 is reflected toward the half mirror 113 at the full mirror 114. A part of this light is transmitted through the half mirror 113, and the remaining part is reflected toward the full mirror 114, and this is repeated.

  Since the half mirror 113 is inclined with respect to the optical axis CL2, the position where the light emitted from the light source 111 passes through the half mirror 113 and the position where the light reflected by the full mirror 114 passes through the half mirror 113 are: It will be in a different position.

  Please refer to FIG. As a result, a plurality of images Im are displayed on the display unit 103 of the measuring instrument 100. An optical device 110 having a novel design is provided.

  Returning to FIG. By the way, when the half mirror 113 and the full mirror 114 are formed on the surface of the inclined plate 112, the degree of freedom in design may be limited by the shape and size of the inclined plate 112.

JP 2009-69207 A

  An object of the present invention is to provide an optical device having a high degree of design freedom.

According to the first aspect of the present invention, a half mirror that transmits a part of the light emitted from the light source and reflects the remaining part, and the light that is provided opposite to the half mirror and is reflected by the half mirror is transmitted to the half mirror. In an optical device composed of a full mirror that reflects toward the half mirror, and a support member that supports the half mirror and the full mirror,
The half mirror and the full mirror are arranged in parallel with each other and inclined at a predetermined angle with respect to the optical axis of the light emitted from the light source. The

  As described in claim 2, preferably, the support member includes a first wall portion standing at the predetermined angle along the half mirror, and an insertion portion into which one end of the full mirror can be inserted, And a second wall portion standing at the predetermined angle along the other end of the full mirror.

As described in claim 3, preferably, a turning member that sandwiches the half mirror together with the first wall portion is further provided,
A packing is provided between the first wall portion and the half mirror, or at least one between the facing member and the half mirror.

  As described in claim 4, preferably, the full mirror is attached to the second wall portion by an adhesive member.

  In the invention according to claim 1, the half mirror and the full mirror are supported by the support member in parallel with each other and inclined at a predetermined angle with respect to the optical axis of the light emitted from the light source. When a half mirror and a full mirror are formed on the surface using an inclined plate, there is a possibility that the degree of design freedom may be limited by the shape of the inclined plate. By using the half mirror and the full mirror as separate parts, it is not necessary to use an inclined plate, and a high degree of freedom in design can be ensured.

  In the invention which concerns on Claim 2, a supporting member is along the other end of the 1st wall part stood at the predetermined angle along the half mirror, the insertion part which can insert one end of a full mirror, and the other end of a full mirror And a second wall portion set at a predetermined angle. With the support member as a reference, the full mirror and the half mirror, which are separate parts, can be reliably arranged at predetermined positions. Even though the full mirror and the half mirror are configured by separate parts, light can be reliably reflected in a predetermined direction, and high designability can be ensured.

  In the invention which concerns on Claim 3, the turning member which pinches | interposes a half mirror with the 1st wall part is further provided. By sandwiching the half mirror between the turning member and the support member, the half mirror can be securely fixed at a predetermined position. Even when the optical device is used continuously, the positional deviation of the half mirror can be suppressed, and high designability can be ensured over a long period of time.

  In the invention which concerns on Claim 4, the full mirror is affixed on the 2nd wall part by the adhesion member. The full mirror can be securely fixed at a predetermined position. Even when the optical device is used continuously, the position shift of the full mirror can be suppressed, and high designability can be ensured over a long period of time.

It is a front view of the meter for vehicles carrying the optical device by the example of the present invention. FIG. 2 is a sectional view taken along line 2-2 of FIG. It is a figure explaining the full mirror shown by FIG. It is a figure explaining the effect | action of the optical apparatus shown by FIG. It is a figure explaining the conventional optical apparatus. It is a figure explaining the effect | action of the optical apparatus shown by FIG.

Embodiments of the present invention will be described below with reference to the accompanying drawings. Hereinafter, the optical device according to the present invention will be described based on an example in which the optical device is mounted on a vehicle meter. In the description, left and right refer to the left and right with respect to the vehicle occupant, and front and rear refer to the front and rear with reference to the traveling direction of the vehicle. In the figure, Fr indicates the front, Rr indicates the rear, Le indicates the left when viewed from the occupant, Ri indicates the right when viewed from the occupant, Up indicates the upper side, and Dn indicates the lower side.
<Example>

  Please refer to FIG. The vehicle instrument 10 is a device that is disposed in front of the occupant and displays information such as the vehicle speed to the occupant. A vehicle speed meter 11 for displaying the vehicle speed is arranged in the center, a tachometer 12 for displaying the engine speed is arranged on the left side of the vehicle speed meter 11, and information such as the remaining amount of gasoline is electronically displayed on the right side of the vehicle speed meter 11. An electronic display unit 13 is displayed.

  The optical device 20 according to the present invention is provided across the width direction above the vehicle speed meter 11, the tachometer 12, and the electronic display unit 13, and is a device that performs electrical decoration to improve the design of the optical device 20. It is.

  The optical device 20 can also be used as a device for displaying information such as vehicle information to an occupant (an operator of the optical device).

  Please refer to FIG. The optical device 20 includes a case body 30, a facing member 40 that covers the case body 30, a support member 50 that is sandwiched between the case body 30 and the facing member 40, and a support member 50 that supports the optical device 20. The half mirror 60 and the full mirror 70, the light source 80 provided in the front part (right side of the drawing) of the support member 50, and the colorless and transparent clear cover 23 covered on the turning member 40 are provided.

  The case body 30 is a black resin member having an open rear end. The case body 30 is formed in a container shape, and has a bottom portion 31 extending in a substantially vertical direction at the front end, a side wall portion 32 raised from the end portion of the bottom portion 31, and outward at the front end of the side wall portion 32. And a protruding projection 33.

  The facing member 40 is a resin member that covers the end of the half mirror 60 and the like, and allows the occupant to visually recognize only necessary portions. The facing member 40 is integrated with an outer wall portion 41 that covers the outer periphery of the side wall portion 32 of the case body 30, a rear wall portion 42 that extends inward from the rear end of the outer wall portion 41, and an end portion of the rear wall portion 42. A lid 43 that covers the end of the half mirror 60 and the like, and an opening 44 that is formed in the lid 43 and allows a passenger to visually recognize a necessary portion.

  The support member 50 is a resin member that supports the half mirror 60 and the full mirror 70. The support member 50 includes a sandwiching portion 51 sandwiched between the case body 30 and the facing member 40, a parallel wall portion 52 formed inside the sandwiching portion 51 and extending in parallel with the optical axis CL1 of the light source 80, and the parallel wall portion. A first wall portion 53 extending downward and rearward from the front end of 52, a second wall portion 54 extending in parallel to the first wall portion 53 in front of the first wall portion 53, and the second wall portion 54. The extension part 55 extended toward the front, and the insertion part 56 which is integrally formed from the 1st wall part 53, and can insert the upper end of the full mirror 70 are comprised.

  The first wall 53 and the second wall 54 are inclined at a predetermined angle with respect to the optical axis CL1 of the light emitted from the light source 80.

  The insertion portion 56 is a portion that extends from the first wall portion 53 toward the front in a substantially U shape. In accordance with the shape of the insertion portion 56, a part of the upper end of the full mirror 70 protrudes further upward, and the protruded portion is inserted into the insertion portion 56.

  The half mirror 60 transmits a part of the light emitted from the light source 80 and reflects the remaining part toward the full mirror 70. Rubber packings 25, 25 are sandwiched between the first wall portion 53 of the support member 50 and the half mirror 60. Similarly, rubber packings 26 and 26 are sandwiched between the half mirror 60 and the facing member 40.

  Please refer to FIG. The full mirror 70 is disposed so as to face the half mirror 60 through a predetermined gap (not shown), a colorless and transparent base material 71, and a mirror surface portion 72 that is formed on the front surface of the base material 71 and can reflect light. It has. A part of the front upper portion of the base 71 is not formed with a mirror surface portion 72 so that the light emitted from the light source 80 can be transmitted. A part through which light from the light source 80 can be transmitted is referred to as a transmission part 73. The transmission part 73 can be colored in an arbitrary color.

  Please refer to FIG. The transmission part 73 is formed in a parallelogram on the basis of the state seen from the passenger. A plurality of transmission parts 73 are formed in the width direction.

  Please refer to FIG. The mirror surface portion 72 is adhered to the second wall portion 54 and the insertion portion 56 with double-sided tapes 27 and 28 (adhesive members 27 and 28).

  The mirror surface portion 72 may be formed on the rear surface of the base material 71, and the base material 71 may be adhered to the second wall portion 54 and the insertion portion 56 with the double-sided tapes 27 and 28.

  The light source 80 includes a plurality of light emitting elements (LEDs) 82 mounted on a single control board 81. Turning on and off of the light emitting element 82 is controlled by the control board 81. The same number of light-emitting elements 82 as the number of transmission parts 73 are provided in accordance with the transmission parts 73 of the full mirror 70.

  Please refer to FIG. The control substrate 81 is in contact with the respective front end portions 52 a, 55 a, and 56 a of the parallel wall portion 52, the extension portion 55, and the insertion portion 56 formed on the support member 50. These front end portions 52a, 55a, and 56a can also be called contact portions 52a, 55a, and 56a for contacting and positioning the light source 80 (control board 81). Hereinafter, the front end portions 52a, 55a, and 56a are referred to as contact portions 52a, 55a, and 56a.

  Please refer to FIG. When the light emitting element 82 (light source 80) is turned on, the light emitted from the light emitting element 82 passes through the transmission part 73 and the base material 71 and reaches the half mirror 60. A part of the light reaching the half mirror 60 is transmitted through the half mirror 60. It appears to the passenger's eyes as if the first image Im1 was displayed on the half mirror 60. The shape of the first image Im <b> 1 is the same parallelogram as the shape of the transmission part 73.

  The remaining part of the light reaching the half mirror 60 is reflected toward the full mirror 70. The half mirror 60 is inclined with respect to the optical axis CL1 of the light emitted from the light emitting element 82. For this reason, the light reflected by the half mirror 60 is reflected toward a portion different from the light source 80. The light reflected by the half mirror 60 passes through the base material 71 and reaches the mirror surface portion 72 of the full mirror 70. Light is reflected toward the half mirror 60 at the mirror surface portion 72 of the full mirror 70. Part of the light passes through the half mirror 60 and appears to the passenger's eyes as if the second image Im2 was displayed on the half mirror 60. The second image Im2 is thinner than the first image Im1.

  In the half mirror 60, the remainder of the light is reflected, and this is repeated thereafter. As a result, the third image Im3, the fourth image Im4, and the image are projected below the second image Im2. The third image Im3 is thinner than the second image Im2, and the fourth image Im4 is thinner than the third image Im3. That is, an image is displayed in a gradation. That is, in this case, of the light emitted from the light emitting element 82, the light that is transmitted through the half mirror 60 without being reflected by the full mirror 70, and the light that is reflected by the half mirror 60 and the full mirror 70 and then transmitted through the half mirror 60. The images Im1 to Im4 displaying predetermined information are displayed (in a gradation).

  According to the present invention described above, the following effects can be obtained.

  Please refer to FIG. The half mirror 60 and the full mirror 70 are supported by the support member 50 in parallel with each other and tilted at a predetermined angle with respect to the optical axis CL1 of the light emitted from the light source 80.

  Please refer to FIG. When the half mirror 113 and the full mirror 114 are formed on the surface using the inclined plate 112, there is a possibility that the degree of design freedom may be limited by the shape of the inclined plate 112.

  Please refer to FIG. By using the half mirror 60 and the full mirror 70 as separate parts, it is not necessary to use an inclined plate, and a high degree of freedom in design can be ensured.

  Please refer to FIG. The inclined plate 112 may have a slight difference in size and shape for each product. The direction in which light is reflected may vary depending on the difference that occurs between products. By repeating the reflection a plurality of times, there is a possibility that the deviation of the optical path in each product becomes large. As a result, the displayed image varies depending on the product. If it is not necessary to arrange components between the half mirror 113 and the full mirror 114, it is possible to suppress a difference in design that may occur for each product.

  Please refer to FIG. In this regard, by configuring the half mirror 60 and the full mirror 70 with individual parts, it is not necessary to sandwich another part between the half mirror 60 and the full mirror 70. Light can be reflected in a predetermined direction between the half mirror 60 and the full mirror 70, and high designability can be ensured.

  Further, the support member 50 includes a first wall portion 53 that is set at a predetermined angle along the half mirror 60, an insertion portion 56 into which one end of the full mirror 70 can be inserted, and the other end of the full mirror 70. And a second wall portion 54 standing at a predetermined angle. With the support member 50 as a reference, the full mirror 70 and the half mirror 60, which are separate parts, can be reliably arranged at predetermined positions. Even though the full mirror 70 and the half mirror 60 are constituted by separate parts, light can be reliably reflected in a predetermined direction, and high designability can be ensured.

  Further, a turning member 40 that sandwiches the half mirror 60 together with the first wall portion 53 is further provided. By sandwiching the half mirror 60 between the turning member 40 and the support member 50, the half mirror 60 can be reliably fixed at a predetermined position. Even when the optical device 20 is continuously used, the positional deviation of the half mirror 60 can be suppressed, and high designability can be ensured over a long period of time.

  Further, the full mirror 70 is attached to the second wall portion 54 and the insertion portion 56 with double-sided tapes 27 and 28. The full mirror 70 can be securely fixed at a predetermined position. Even when the optical device 20 is continuously used, the position shift of the full mirror 70 can be suppressed, and high designability can be ensured over a long period of time.

  Further, the support member 50 has abutting portions 52a, 55a, and 56a with which the light source 80 (control board 81) abuts at a plurality of locations. By bringing the light source 80 into contact with the contact portions 52a, 55a, and 56a, the light source 80 can be disposed at a predetermined position with respect to the support member 50. Accordingly, the light source 80, the half mirror 60, and the full mirror 70 can be arranged at predetermined positions with the support member 50 as a reference.

  In addition, the light source 80 is configured to contact the plurality of contact portions 52a, 55a, and 56a. By bringing the light source 80 into contact with the plurality of contact portions 52a, 55a, and 56a, a plurality of points come into contact with the light source 80, so that the light source 80 can be more reliably disposed at a predetermined position and a support member. 50 and the light source 80 can be suppressed.

  It further includes a case body 30 that houses the light source 80, the half mirror 60, and the full mirror 70. The case body 30 is covered with a turning member 40 that covers the ends of the light source 80, the half mirror 60, and the full mirror 70. The support member 50 is sandwiched between the case body 30 and the facing member 40. Since the end portions of the light source 80, the half mirror 60, and the full mirror 70 are covered with the turning member 40, the design of the optical device 20 can be improved. Then, by sandwiching the support member 50 between the case body 30 and the turning member 40, each component can be accurately arranged at a predetermined position with respect to the case body 30 for housing each component. That is, each component can be mounted at an accurate position by using the turning member 40 for improving the design of the optical device 20. Each component can be arranged at an accurate position without increasing the number of components, which is preferable.

  The optical device according to the present invention has been described by way of example as being built in a vehicle meter, but is not limited to a vehicle or meter and can be used in any part. Furthermore, the optical device according to the present invention is not limited to one used for decoration purposes, but can also be used as a device for providing information to an operator. That is, the present invention is not limited to the examples as long as the operations and effects of the present invention are exhibited.

  The optical device of the present invention is suitable for decorating vehicle instruments.

20 ... Optical device 25, 26 ... Packing 27 ... Double-sided tape (adhesive member)
DESCRIPTION OF SYMBOLS 50 ... Support member 53 ... 1st wall part 54 ... 2nd wall part 56 ... Insertion part 60 ... Half mirror 70 ... Full mirror 80 ... Light source CL1 ... Optical axis

Claims (4)

A half mirror that transmits a part of the light emitted from the light source and reflects the remainder, a full mirror that is provided facing the half mirror and reflects the light reflected by the half mirror toward the half mirror, and In an optical device comprising a half mirror and a support member that supports the full mirror,
The optical device, wherein the half mirror and the full mirror are arranged in parallel to each other and inclined at a predetermined angle with respect to an optical axis of light emitted from the light source.   The support member includes a first wall portion standing at the predetermined angle along the half mirror, an insertion portion into which one end of the full mirror can be inserted, and the predetermined wall along the other end of the full mirror. The optical device according to claim 1, further comprising a second wall portion that is set at an angle. A turning member that sandwiches the half mirror together with the first wall is further provided,
The optical device according to claim 2, wherein a packing is provided between the first wall portion and the half mirror, or at least one between the facing member and the half mirror.   The optical device according to claim 2, wherein the full mirror is attached to the second wall portion by an adhesive member.

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