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Displaying optical system with dual -free curved reflex mirrors displaying the optical system

A curved mirror and optical system technology, applied in optics, optical components, instruments, etc., can solve problems such as difficult correction of aberrations, achieve excellent image quality, easy processing, and increase the range of free rotation

Active Publication Date: 2017-03-15
CHANGCHUN INST OF OPTICS FINE MECHANICS & PHYSICS CHINESE ACAD OF SCI +1
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Problems solved by technology

[0004] In order to solve the difficult problem of aberration correction other than the distortion caused by two ellipsoids in the existing double ellipse structure helmet display system, the present invention provides a large field of view helmet display optical system using double free-form surface mirrors

Method used

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  • Displaying optical system with dual -free curved reflex mirrors displaying the optical system
  • Displaying optical system with dual -free curved reflex mirrors displaying the optical system
  • Displaying optical system with dual -free curved reflex mirrors displaying the optical system

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specific Embodiment approach 1

[0015] Specific implementation mode 1. Combination Figure 1 to Figure 6 Describe this embodiment, the helmet display optical system with a large field of view using double free-form surface mirrors, such as figure 1 As shown, the optical system includes a first free-form surface mirror A, a relay lens group, a second free-form surface mirror B, a subsequent lens group and a display screen 27 . The optical system is designed according to the reverse optical path; during the reverse design, the exit pupil of the head-mounted display becomes the entrance pupil of the optical system, and the light path begins at entrance pupil 1 (the position of the human eye), and the entrance pupil is located on the right side of the first free-form surface; The light in the field enters the optical system through the entrance pupil 1 in the form of parallel light, and the first free-form surface mirror A converges the incident light to the relay lens group on the left; the wide beam is converg...

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Abstract

The invention discloses a large visual field helmet display optical system with dual free-form surface reflection mirrors, and relates to the field of design of optical systems and devices. The problem that two ellipsoid faces in a two-ellipsoid structure helmet displayer system cause distortion and are high in aberration correction difficulty is solved. The large visual field helmet display optical system comprises the first free-form surface reflection mirror, a relay lens assembly, the second free-form surface reflection mirror, a succeeding lens assembly and a display screen. The optical system is designed according to a reverse light path. The light path starts from the exit pupil position (eye position), and light of all visual fields passes through the exit pupil to enter the system in parallel, is reflected by the first free-form surface reflection mirror and enters the relay lens assembly. The light exits from the relay lens assembly, is reflected by the second free-form surface reflection mirror, then enters the succeeding lens assembly, and finally converges on the display screen. Compared with the two-ellipsoid structure, the exit pupil diameter is enlarged to be 8 mm, and the eye free rotating range is enlarged.

Description

technical field [0001] The invention relates to the field of optical system and device design, in particular to a large field of view head-mounted display optical system using double free-form surface mirrors and rotationally symmetrical surface lenses, which is suitable for the field of virtual reality. Background technique [0002] With the development of computer technology and micro-nano processing technology, virtual reality technology has made great progress in image processing, display resolution, and response speed. Immersion is an important feature of virtual reality technology, which represents the proximity of the virtual environment to people's senses. Head-mounted display is a key image output device in virtual reality technology. The field of view of the head-mounted display determines the immersion of the observer in the virtual environment. The field of view of the current commercial helmet-mounted display is about 40°, which is far smaller than the field o...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): G02B27/01G02B17/00
CPCG02B27/0025G02B27/0172G02B2027/0123G02B2027/0129
Inventor 刘伟奇孟祥翔姜国华朱秀庆杨建明魏忠伦康玉思唐伯河安明
Owner CHANGCHUN INST OF OPTICS FINE MECHANICS & PHYSICS CHINESE ACAD OF SCI
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