Holographic Optical Element Temperature Stabilization

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Solution Overview

Problem

Holographic optical elements often experience inefficient reconstruction of holograms due to varying ambient conditions, leading to inconsistent brightness and perceptibility across different regions of the hologram.

Innovation Solution

A system comprising a substrate with at least one first layer containing a holographic optical element and at least one second layer with integrated heat-conducting elements, such as carbon nanotubes or silver nanowires, to provide temperature stabilization and enhance reconstruction efficiency.

Engineering Contradictions & Design Principles

VSEngineering Contradiction Analysis

1Reliability

If holographic optical elements are used without temperature stabilization, then the device complexity is reduced, but the reconstruction efficiency becomes inconsistent under varying ambient conditions

Engineering Contradiction:

Improvereconstruction efficiency consistencyVSAvoiddevice complexity

Core Design Contradiction:

ReliabilityVSDevice complexity

Solution Approach 1:

The patent applies parameter changes by introducing temperature stabilization through heat-conducting elements (such as metal layers or thermal management structures) to maintain the holographic optical element at a constant temperature. This prevents temperature-induced variations in diffraction efficiency and ensures consistent reconstruction performance under varying ambient conditions, directly resolving the contradiction between reliability and device complexity.

Inventive Principle:

Principle #35Parameter changes

2Adaptability or versatility

If ambient temperature varies, then the adaptability of the system to different environments is improved, but the diffraction efficiency becomes inconsistent across different regions of the hologram

Engineering Contradiction:

Improveenvironmental adaptabilityVSAvoiddiffraction efficiency consistency

Core Design Contradiction:

Adaptability or versatilityVSReliability

Solution Approach 1:

The patent applies local quality by implementing localized thermal management structures (such as heat-conducting layers positioned specifically behind the holographic optical element) that provide temperature stabilization where it is most needed. This localized approach maintains diffraction efficiency consistency in the critical reconstruction region while allowing the rest of the system to adapt to environmental conditions, resolving the contradiction between adaptability and reliability.

Inventive Principle:

Principle #3Local quality

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

The temperature stabilization achieved by the heat-conducting elements ensures consistent diffraction efficiency and improved hologram reconstruction quality, even under varying ambient conditions.

Implementation Method 1

at least one second layer (82, 83) applied on the at least one substrate (71, 81), wherein each of the at least one second layer (82, 83) comprises at least one respective heat-conducting element (185)

Methodology Applied

Scientific EffectThermal conduction: Conduction (thermal)

Data Source

PatentUS20250155663A1Holographic optical element and temperature stabilization

Publication Date: 2025.05.15 CARL ZEISS JENA GMBH

AI summary

Different examples relate to techniques in order to actively or passively stabilize the temperature of a holographic optical element. To this end, heat-conducting elements, e.g. silver nanowires or carbon nanotubes, are provided.