Diffractive Optical Elements for Target Lens Image Blending
Find Innovative SolutionsGenerate Solutions
Solution Overview
Problem
Existing target optics systems face challenges in achieving high transmission and diffraction efficiency for flexible target point reflection while maintaining a compact design, and require minimal additional optical elements to effectively display information during zooming.
Innovation Solution
The use of a partially translucent optical carrier element with diffractive optical coupling and decoupling elements that provide beam deflection, collimation, and focusing capabilities, allowing for flexible target point reflection and information display with minimal additional optical components, and enabling high transmission and diffraction efficiency.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Illumination intensity
If conventional reflection modules are used to display flexible target points, then target point reflection is achieved, but the transmission degree for main light drops below 95%
Solution Approach 1:
The patent combines the reflection module with the optical carrier element into a single integrated component. The diffractive optical elements are directly formed on the carrier element surfaces, eliminating the need for separate reflection modules and reducing the number of optical interfaces that would otherwise reduce light transmission.
Solution Approach 2:
The optical carrier element serves multiple functions: it acts as both the reflective surface for target point display and the optical medium for light transmission. The diffractive optical elements on its surfaces enable both beam deflection and total internal reflection within the same component, achieving multi-functionality without adding separate elements.
2Reliability
If additional optical elements are added to achieve beam deflection and focusing, then imaging function is improved, but the installation space increases
Solution Approach 1:
The patent merges beam deflection, collimation, and focusing functions into the optical carrier element itself through diffractive optical elements. This eliminates the need for separate lenses and mirrors, significantly reducing the installation space while maintaining full imaging capability.
Solution Approach 2:
The patent replaces conventional mechanical optical elements (lenses, mirrors) with diffractive optical elements that achieve the same beam manipulation functions through diffraction patterns. This substitution reduces the physical space required while maintaining optical performance.
3Ease of operation
If diffractive optical elements are added to the optical carrier element, then beam deflection and total reflection are achieved, but the device complexity increases
Solution Approach 1:
The diffractive optical elements are integrated directly onto the optical carrier element surfaces, combining multiple functions (beam deflection, total internal reflection, collimation) into a single component. This reduces the number of separate elements needed and simplifies the overall device structure.
Solution Approach 2:
The optical carrier element with diffractive patterns performs multiple optical functions simultaneously: it deflects beams at specific angles, enables total internal reflection, and provides collimation. This multi-functionality reduces the need for separate control elements.
Applied Scientific Principles
This section explains which scientific principles are used to turn an abstract innovation direction into a practical engineering solution.
Function Achieved in This Case
This solution ensures high transmission and diffraction efficiency, allowing for flexible target point reflection and information display, while maintaining a compact design that adapts to the target optics system, enabling accurate distance estimation and efficient use of space.
Implementation Method 1
The diffractive optical coupling element can effect a beam deflection of the light to be coupled in to such an angle that total reflection of the light to be coupled in is achieved within the optical carrier element
Implementation Method 2
total reflection of the light to be coupled in is achieved within the optical carrier element
Implementation Method 3
The diffractive optical coupling-in element brings about a collimation of the light to be coupled-in
Implementation Method 4
the diffractive optical decoupling element can cause the coupled-in light to exit from the optical carrier element into the beam path of the target optics
Implementation Method 5
the diffractive optical decoupling element causes the light to be coupled in to be focused into the beam path of the target optics
Data Source
Figure 1~3
Figure 4~5
Figure 6~8
AI summary
The device (7) has a translucent optical carrier element (7a) partially arranged in an optical path (5) of a target lens formed as a telescopic sight. A diffractive optical coupling element (7b) guides light (11) of an image to a diffractive optical decoupling element (7c) by the carrier element for overlapping with the path. The image faded into the path of the lens is illustrated by the coupling element and the decoupling element. The coupling element causes the beam deflection of the light, so that the total reflection of the light is achieved within the optical carrier element. The optical carrier element is formed as a plan plate made of glass. The diffractive optical coupling element and/or the diffractive optical decoupling element are designed as a holographic optical element. An independent claim is also included for a target lens.