Method for implementing holographic waveguide grating large exit pupil

Abstract

The invention discloses a method for implementing holographic waveguide grating large exit pupil. The method is performed through a micro display part, a collimating lens and a holographic waveguide gratin; the interference modulating method is carried out to modulate light waves with different light strength in different areas within the specified plane, and the light waves interferes with another plane beam, the same gating with different diffraction efficiency can be manufactured synchronously, and therefore, the uniform diffraction emission of the light waves can be performed, and as a result, the holographic waveguide grating large exit pupil can be achieved. According to the method, the method of designing a diffraction optical element of any structure is proposed, and the feasibility of the method is verified by experiment; the method is applied to the manufacturing of a holographic gating with different diffraction efficiency in different areas, and therefore, the uniformly-emitted large exit pupil holographic waveguide imaging can be achieved.

Description

technical field [0001] The invention relates to a method for realizing a holographic waveguide grating, in particular to a method for realizing a large exit pupil of the holographic waveguide grating, and belongs to the field of the holographic waveguide grating. Background technique [0002] At the beginning of the 20th century, in order to meet the needs of the air force in combat, an aiming ring with a sight was installed on the aircraft for aiming, similar to the simple aiming system on the early rifles. The three points in a line is the earliest quasi-head-up How the display works. Later, in order to reduce the pilot's aiming burden, other aiming systems were installed on the plane, including the Ortiz sight, which actually installed a handheld monocular on the plane, allowing the pilot to aim and use it. In the early days of World War II, collimation reflective sights and servo halo gyro sights began to appear one after another, mainly composed of ring plate mechanism...

AI Technical Summary

Problems solved by technology

For example, the holographic waveguide shows the utilization rate of light energy by the grating in the glasses. Due to the low diffraction efficiency of the holographic grating, the coupling in and out of light waves will be accompanied by energy loss.

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