Projection Device Reflection Diffraction Pattern Superposition

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Solution Overview

Problem

Existing projection devices suffer from dispersion issues and inability to switch between different projection patterns, resulting in unclear images and limited atmospheric options.

Innovation Solution

A projection device comprising a first light source, a diffraction part, and a reflection part, with a beam splitter and beam expander to form clear projection patterns, and optionally a second light source or self-luminous dot matrix for enhanced flexibility and diversity in projection patterns.

Engineering Contradictions & Design Principles

VSEngineering Contradiction Analysis

1Adaptability or versatility

If light beams transmit through optical components (interference filter wheel, DOE, grating wheel) to form projection patterns, then the projection device can create atmospheric effects, but dispersion occurs causing unclear images

Engineering Contradiction:

Improveprojection pattern diversityVSAvoidimage clarity

Core Design Contradiction:

Adaptability or versatilityVSManufacturing precision

Solution Approach 1:

The patent inverts the conventional transmission-based optical path by using reflection-based projection. Instead of light passing through multiple optical components (interference filter wheel, DOE, grating wheel) which causes dispersion, the patent uses reflective elements (mirror array, reflective projection plate) to bounce light and form patterns. This inversion of the optical approach eliminates dispersion while maintaining pattern diversity, directly resolving the contradiction between image clarity and projection versatility

Inventive Principle:

Principle #13The other way round (Inversion)

2Adaptability or versatility

If a single light source and fixed optical components are used, then the device structure is simple, but the device cannot switch among different projection patterns

Engineering Contradiction:

Improveprojection pattern switching capabilityVSAvoidoptical component configuration

Core Design Contradiction:

Adaptability or versatilityVSDevice complexity

Solution Approach 1:

The patent introduces dynamic control elements including a rotating reflective projection plate with multiple patterns and a controllable mirror array. These dynamic components allow the system to switch between different projection patterns on demand. The reflective projection plate can rotate to present different pre-defined patterns, while the mirror array can be electronically controlled to create various patterns, enabling pattern switching without adding multiple fixed optical component sets

Inventive Principle:

Principle #15Dynamics

Solution Approach 2:

The patent makes a single light source serve multiple functions by combining it with a multi-pattern reflective projection plate and a programmable mirror array. The same light source can project different patterns by changing the orientation of the reflective projection plate or reconfiguring the mirror array, eliminating the need for multiple dedicated light sources and optical component sets for different patterns

Inventive Principle:

Principle #6Universality (Multi-functionality)

3Adaptability or versatility

If multiple light sources are used to provide diverse projection patterns, then projection pattern diversity is improved, but the device complexity and cost increase

Engineering Contradiction:

Improveprojection pattern diversityVSAvoidlight source configuration

Core Design Contradiction:

Adaptability or versatilityVSDevice complexity

Solution Approach 1:

Inventive Principle:

Principle #6Universality (Multi-functionality)

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 solution effectively avoids dispersion problems and allows for clear, diverse, and flexible projection patterns, enabling the creation of various atmospheric effects by superposing or combining patterns formed by the diffraction and reflection parts.

Implementation Method 1

a diffraction part on which first predetermined pattern is provided, the diffraction part is capable of diffracting at least a part of the first light beam emitted from the first light source to form first pattern corresponding to the first predetermined pattern

Methodology Applied

Scientific EffectDiffraction: Diffraction

Implementation Method 2

a reflection part on which one or more second predetermined patterns are provided, the reflection part is capable of reflecting a second light beam incident thereon to form second pattern corresponding to the one or more second predetermined patterns

Methodology Applied

Scientific EffectReflection: Reflection

Data Source

PatentUS12018803B2Projection device and projection system

Publication Date: 2024.06.25 SAVANT TECHNOLOGIES LLC

AI summary

Provided is a projection device and projection system that includes a first light source which emits a first light beam, a diffraction part on which first predetermined pattern is provided, and the diffraction part diffracts at least a part of the first light beam emitted from the first light source to form first pattern corresponding to the first predetermined pattern, and a reflection part on which one or more second predetermined patterns are provided, the reflection part reflects a second light beam incident thereon to form second pattern corresponding to the one or more second predetermined patterns, and one of the first pattern and the second pattern forms projection pattern or both of the first pattern and the second pattern are superposed to form projection pattern.