Optical scanner, image display device, head mount display, and head-up display

A scanner and light source technology, applied in the field of head-up displays, can solve problems such as the influence of the displacement part

Active Publication Date: 2015-04-29
SEIKO EPSON CORP
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

Therefore, the displacement part is easily affected by vibration with a high frequency

Method used

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  • Optical scanner, image display device, head mount display, and head-up display
  • Optical scanner, image display device, head mount display, and head-up display
  • Optical scanner, image display device, head mount display, and head-up display

Examples

Experimental program
Comparison scheme
Effect test

no. 1 approach

[0052] image display device

[0053] refer to figure 1 The configuration of the image display device will be described. figure 1 It is a schematic perspective view showing the configuration of the image display device. figure 1 The shown image display device 1 is a device that displays an image by two-dimensionally scanning a drawing laser 3 as light on a screen 2 such as a screen or a wall. The image display device 1 has: a drawing light source unit 4, which is used as a light source for emitting the drawing laser light 3; an optical scanner 5, which scans the drawing laser light 3; reflected by the laser beam 3; and a control unit 7 that controls the operation of the drawing light source unit 4 and the optical scanner 5. In addition, the reflecting mirror 6 may be provided as needed, and may be omitted.

[0054] The drawing light source unit 4 includes: laser light sources 8r, 8g, and 8b as light sources of red, green, and blue colors, and collimating lenses 9r, 9g, and ...

no. 2 approach

[0128] Next, use Figure 11 (a) Schematic top view showing the configuration of the optical scanner and Figure 11 (b) is a schematic side sectional view showing the structure of the optical scanner to describe one embodiment of the optical scanner. Figure 11 (b) is along Figure 11 (a) Cross-sectional view along line BB. This embodiment differs from the first embodiment in that the shape of the reflector 32 is different. In addition, descriptions of the same points as those in the first embodiment are omitted.

[0129] That is, in this embodiment, if Figure 11 As shown, the optical scanner 60 includes a structure 61 . A structure 61 is provided on the side plate 13 b of the case 13 . The structure 61 is formed by stacking the support frame portion 15 , the oxide film 15 a , and the support portion 16 on the side plate 13 b in the shape of a square tube.

[0130] The support portion 16 is provided with a first beam portion 17 and a second beam portion 22 extending in ...

no. 3 approach

[0143] Next, use Figure 12 (a) Schematic top view showing the configuration of the optical scanner and Figure 12 (b) is a schematic side cross-sectional view showing the structure of the optical scanner, describing one embodiment of the optical scanner. Figure 12 (b) is along Figure 12 (a) Cross-sectional view along CC line. This embodiment differs from the first embodiment in that hammers are provided at both ends of the displacement portion 27 . In addition, descriptions of the same points as those in the first embodiment are omitted.

[0144] That is, in this embodiment, if Figure 12 As shown, the structure 77 of the optical scanner 76 is provided with a hammer portion 78 at the end on the +Y direction side and the end on the −Y direction side in the thin plate structure portion 27 a. At the position where the hammer portion 78 is provided, the thickness of the thin plate structure portion 27 a is equal to the thickness of the plate member 33 plus the thickness of...

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PUM

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Abstract

An optical scanner includes: a movable plate which includes a light reflection unit; a first torsion bar which oscillatably supports the movable plate around a first axis; a first displacement member which is connected to the first torsion bar; a second torsion bar which oscillatably supports the first displacement member around a second axis; a second displacement member which is connected to the second torsion bar; and an actuator which is installed on the second displacement member and applies a displacement to the second displacement member so as to apply torsional deformation and bending deformation to the second torsion bar, in which the first displacement member includes a frame member surrounding the movable plate, and a damper which has a smaller thickness than that of the frame member and extends in a direction intersecting with a direction in which the second torsion bar extends from the frame member.

Description

technical field [0001] The present invention relates to an optical scanner, an image display device, a head-mounted display, and a head-up display. Background technique [0002] Optical scanners for drawing by optical scanning are used in laser printers, image display devices, and the like. Furthermore, Patent Document 1 discloses an optical scanner including torsion bars in two orthogonal directions. Thus, in the optical scanner, the movable plate is supported in a swingable manner by the pair of first torsion bars. The movable plate is provided with a light-reflecting surface. The other end of the first torsion bar is connected to the frame-shaped displacement part. And, the displacement part is supported so as to be able to swing by the second torsion bar. The other end of the second torsion bar is connected to the frame-shaped support portion. The direction in which the first torsion bar extends is referred to as a first direction, and the direction in which the sec...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): G02B26/10G02B27/01
Inventor 沟口安志儿嶋长子
Owner SEIKO EPSON CORP
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