Binary optical system of anti-gas mask helmet displayer

A head-mounted display and binary optics technology, which is applied in the field of optical systems, can solve the problems of not being able to view external information at the same time, only a single channel, and viewing fatigue, and achieve the effects of light weight, improved comfort, and small obstruction
CN102914871AActive Publication Date: 2013-02-06中航华东光电有限公司
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Patent Information

Authority / Receiving Office
CN · China
Current Assignee / Owner
中航华东光电有限公司
Publication Date
2013-02-06

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Abstract

The invention discloses a binary optical system of an anti-gas mask helmet displayer. The binary optical system consists of a binary optical holographic plane reflecting mirror and a relay system, wherein the reflecting mirror has a holographic plane, and light is emitted from a miniature display screen, sequentially passes through the relay system and the reflecting mirror and finally enters human eye pupils. In addition, a dip angle formed by a mechanical axis of the reflecting mirror and a primary ray of a zero view field is zero. The binary optical system of the anti-gas mask helmet displayer has the advantages that the system is small in volume and light in weight, double-path displaying can be achieved due to the facts that the dip angle formed by the mechanical axis of the reflecting mirror and the primary ray of the zero view field is zero and the reflecting mirror has the holographic plane, the blocking influence of the whole helmet displayer on view field is very small due to the fact that a double-path displaying mode is adopted, human eyes do not need to perform angle deflection in viewing, and the comfort is improved.
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Description

technical field

[0001] The invention relates to an optical system, in particular to an optical system of a helmet display. Background technique

[0002] Head Mounted Display (HMD), referred to as HMD, is divided into half-projection type and full-projection type. It can enlarge the image generated by the small two-dimensional display through the optical system, and display the collimated image to infinity or a place far enough away. into a screen effect tens of meters away. Since the head-mounted display device is mounted on the observer's head, it must be compact and lightweight to reduce the load on the observer. With the increase of the observation field of view, the observation range will also increase, and the observer can observe high-quality dynamic images more fully. For head-mounted display systems, a large field of view is also very important. The field of view, exit pupil diameter, and focal length of the optical system are mutually restrictive, and it is quite...

Claims

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