Unlock instant, AI-driven research and patent intelligence for your innovation.

Virtual image display device

A virtual image display device and image display technology, applied in optical elements, optics, instruments, etc., can solve the problem of difficulty in controlling the direction of pixel light, and achieve the effect of improving light utilization efficiency

Active Publication Date: 2021-11-05
RICOH KK
View PDF27 Cites 0 Cited by
  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, it is difficult to control the light direction of all pixels in the whole horizontal and vertical direction

Method used

the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
View more

Image

Smart Image Click on the blue labels to locate them in the text.
Viewing Examples
Smart Image
  • Virtual image display device
  • Virtual image display device
  • Virtual image display device

Examples

Experimental program
Comparison scheme
Effect test

Embodiment

[0081] Figure 3A and Figure 3B is a conceptual diagram illustrating an embodiment of the present invention, where with figure 1 and figure 2 In contrast to the example shown, the lens is disposed near the intermediate image, the lens comprising an optical component having a rotationally non-symmetrical curved shape. The "optical component having a non-rotationally symmetric curved surface shape" refers to an optical component that is non-axisymmetric with respect to the optical axis, and includes cylindrical lenses, toroidal lenses, and free-form surface lenses. An optical component 204 having a non-rotationally symmetrical curved surface shape (hereinafter referred to as “curved surface optical component 204 ”) is inserted near the intermediate image 201 of the relay optical system 200 . By having the curved optical member 204, the orientation of the light emitted from the endmost portion of the image display element 100 to the intermediate image 201 is changed, and fi...

Embodiment 2

[0163] Figure 11 The optical configuration of Numerical Example 2 will be described, and FIG. 12 is an aberration diagram of the optical configuration.

[0164] Field angles: Vertical (X), 17.4 degrees; Horizontal (Y), 38.3 degrees; Diagonal, 40.9 degrees.

[0165] Virtual image distance: 0.6m.

[0166]

[0167] Aspheric coefficient

[0168] K A4 A6 A8 A10 3 0.000 -1.86404E-03 1.42016E-04 -1.16227E-05 4.27844E-08 4 0.000 -2.92352E-03 3.78372E-04 -2.75538E-05 4.13654E-07 7 0.000 -1.83980E-03 1.56088E-04 -5.27314E-06 6.10456E-08 8 -25.182 -1.85868E-03 6.42986E-05 0.00000E+00 0.00000E+00 11 0.000 2.55256E-03 1.42898E-05 -8.57411E-07 1.51822E-07 12 0.000 7.49146E-04 1.14044E-05 2.28411E-06 1.63091E-09 13 0.000 -3.62920E-03 1.56426E-04 -4.68515E-06 7.57761E-08 16 0.000 -2.17160E-04 3.92759E-07 8.32430E-09 -1.00005E-10 18 0.000 -5.18021E-07 -5.89067E-06 1.07591E-07 -8.91752E-10 2...

Embodiment 3

[0172] Figure 13 The optical configuration of Numerical Example 3 will be described, and FIG. 14 is an aberration diagram of the optical configuration.

[0173] Field angle: Vertical (X), 14.7 degrees; Horizontal (Y), 31.9 degrees; Diagonal, 34.5 degrees.

[0174] Virtual image distance: 0.5 meters.

[0175]

[0176] Aspheric coefficient

[0177] K A4 A6 A8 A10 3 0.000 -2.04003E-03 1.57639E-04 -1.15670E-05 2.25986E-07 4 0.000 -3.34217E-03 3.56572E-04 -2.38184E-05 5.44305E-07 7 0.000 -1.98713E-03 1.22250E-04 -4.50872E-06 8.25923E-08 8 -18.323 -1.64363E-03 4.92674E-05 0.00000E+00 0.00000E+00 11 0.000 1.64283E-03 -3.86742E-08 -2.07879E-07 1.96355E-08 12 0.000 7.61438E-04 2.01077E-06 -2.68587E-07 2.52182E-08 13 0.000 -4.40737E-03 1.33244E-04 -3.02266E-06 3.38248E-08 16 0.000 -8.81003E-05 -5.35037E-05 2.04585E-06 -5.34107E-08 18 0.000 1.12564E-04 -3.96109E-06 5.43565E-08 -3.79570E-10 ...

the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
Login to View More

PUM

No PUM Login to View More

Abstract

A virtual image display device includes: an image display element that displays an image to be displayed as a virtual image; a propagation optical system that propagates light from the image display element; and a light guide member that guides the light propagated by the propagation optical system. The light guide member includes: a light beam incident part that introduces light including image information from the propagation optical system into the light guide member; an image extractor that extracts the light including image information from an inside of the light guide member; and an image emitter that emits the light including image information to an outside of the light guide member. The propagation optical system includes one or more optical members each having a curved surface shape that is non-rotationally symmetric with respect to an optical axis.

Description

technical field [0001] The invention relates to a virtual image display device. Background technique [0002] In recent years, head-mounted displays (HMDs) have become popular as virtual image display devices. HMDs are broadly classified into transmissive and non-transmissive types. The transmissive type is used in combination with information terminals or augmented reality (AR), and it is called "smart glass" (smartglass) that has attracted attention. The non-transmissive type is widely used in games and virtual reality (VR), and is popular because it can provide a high sense of immersion. [0003] As a type of virtual image display device, an image represented as a virtual image is displayed on an image display element, the image light from the image display element is transmitted to a light guide member through a propagation optical system, and the propagated image light is guided by the light guide member. The light is emitted to the viewer as reflected light so that a...

Claims

the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
Login to View More

Application Information

Patent Timeline
no application Login to View More
Patent Type & Authority Applications(China)
IPC IPC(8): G02B27/01
CPCG02B27/0172G02B2027/0178G02B27/0955G02B27/30
Inventor 中村直树大杉史织平野成伸片野泰男龟山健司五十岚规和长谷川爱乃田中伶实伊藤昌弘须藤芳文门马进冈崎骏
Owner RICOH KK