Optical system packaging structure for helmet-mounted display

Abstract

The invention discloses an optical system packaging structure for a helmet-mounted display. The optical system packaging structure for the helmet-mounted display comprises one image source, five lenses and a package casing, wherein the package casing is formed by processing hard aluminum alloy, two of lenses are processed to be square, three of lenses are processed to be round, and a package casing structure of the lenses are formed by splicing three casing sections which respectively packages the square lenses, the round lenses and the image source. The position accuracy of the lenses and the image source are guaranteed through structural characteristics of the package casing, the assembling accuracy of parts of three casing sections are guaranteed through machining accuracy of the casing parts, the position of the casing packing the image source can be slightly adjusted through an adjusting gasket, and accordingly the position of the image source is slightly adjusted. By means of the structure, the optical system packaging structure for the helmet-mounted display enables lenses and the light source of an off-axis optical system to be reliably fixed, is high in lens position accuracy and improves the display quality, and the position of the image source is adjustable slightly.

Description

technical field [0001] The invention relates to an optical system packaging structure for a helmet display. Background technique [0002] Today's helmet-mounted display has been widely used in the military field. The airborne helmet-mounted display can replace the on-board screen display to display aircraft instrument parameters, so that the pilot does not need to look down at the instrument and concentrate on the front. The helmet-mounted display can also integrate the helmet-mounted aiming system to display aiming information, so that fighter pilots can preempt the enemy. [0003] The optical system of the head-mounted display generally includes an image source, a lens group and a reflector. The image source is a small display screen. The light emitted by the image source passes through the lens group and hits the reflector in front of the user. The light passes through the reflector After reflection, it enters the human eye, allowing the user to see the image. Among th...

AI Technical Summary

Problems solved by technology

However, due to the fact that the axes of the optical lenses in the off-axis optical system do not coincide and the arrangement of the lenses is irregular, the shape of the packaging structure is also irregular. The processing center can only be processed, and the processing accuracy is difficult to guarantee, and the positioning accuracy of the optical lens is also difficult to guarantee, thus affecting the display quality

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