Light Source Module Mechanical Light Blocking Unit Modulation

Solution Overview

Problem

Conventional light source modules for scanning projection apparatuses face challenges in achieving high light intensity modulation frequency due to the high cost and power consumption of electro-optical or acoustic-optical crystals used for light intensity modulation, especially for the green laser, which limits their application in battery-powered devices and increases energy loss.

Innovation Solution

A light source module incorporating a plurality of point light sources and a light blocking unit that inserts into the transmission path at a fixed frequency to block a portion of the color light beam, achieving light intensity modulation with lower costs and power consumption compared to traditional modulators.

Engineering Contradictions & Design Principles

VSEngineering Contradiction Analysis

1Measurement precision

If electro-optical or acoustic-optical crystals are used for light intensity modulation, then light intensity modulation frequency can be achieved, but cost and power consumption increase significantly

Engineering Contradiction:

Improvelight intensity modulation frequencyVSAvoidpower consumption

Core Design Contradiction:

Measurement precisionVSUse of energy by moving object

Solution Approach 1:

The patent replaces expensive electro-optical or acoustic-optical crystals with a simple mechanical light blocking unit consisting of a movable block and driver. This mechanical approach uses inexpensive components to achieve the same light intensity modulation function, significantly reducing cost and power consumption while maintaining the required modulation frequency performance.

Inventive Principle:

Principle #27Cheap short-living objects (Disposable)

Solution Approach 2:

The patent substitutes the optical/electromagnetic field-based modulation mechanisms (electro-optical or acoustic-optical effects) with a mechanical blocking system. The light blocking unit physically obstructs the light path using a movable block actuated by a driver, replacing the complex optical field manipulation with a simpler mechanical approach that consumes less power.

Inventive Principle:

Principle #28Mechanics substitution (Replace mechanical system)

2Measurement precision

If electro-optical or acoustic-optical crystals are used for light intensity modulation, then light intensity modulation frequency can be achieved, but manufacturing cost increases

Engineering Contradiction:

Improvelight intensity modulation frequencyVSAvoidmanufacturing cost

Core Design Contradiction:

Measurement precisionVSEase of manufacture

Solution Approach 1:

The patent replaces expensive electro-optical or acoustic-optical crystals with a simple mechanical light blocking unit consisting of a movable block and driver. This mechanical approach uses inexpensive components to achieve the same light intensity modulation function, significantly reducing cost and power consumption while maintaining the required modulation frequency performance.

Inventive Principle:

Principle #27Cheap short-living objects (Disposable)

Solution Approach 2:

The patent substitutes the optical/electromagnetic field-based modulation mechanisms (electro-optical or acoustic-optical effects) with a mechanical blocking system. The light blocking unit physically obstructs the light path using a movable block actuated by a driver, replacing the complex optical field manipulation with a simpler mechanical approach that consumes less power.

Inventive Principle:

Principle #28Mechanics substitution (Replace mechanical system)

3Measurement precision

If electro-optical or acoustic-optical crystals are used for light intensity modulation, then light intensity modulation frequency can be achieved, but energy loss increases

Engineering Contradiction:

Improvelight intensity modulation frequencyVSAvoidenergy loss

Core Design Contradiction:

Measurement precisionVSLoss of energy

Solution Approach 1:

The patent replaces expensive electro-optical or acoustic-optical crystals with a simple mechanical light blocking unit consisting of a movable block and driver. This mechanical approach uses inexpensive components to achieve the same light intensity modulation function, significantly reducing cost and power consumption while maintaining the required modulation frequency performance.

Inventive Principle:

Principle #27Cheap short-living objects (Disposable)

Solution Approach 2:

The patent substitutes the optical/electromagnetic field-based modulation mechanisms (electro-optical or acoustic-optical effects) with a mechanical blocking system. The light blocking unit physically obstructs the light path using a movable block actuated by a driver, replacing the complex optical field manipulation with a simpler mechanical approach that consumes less power.

Inventive Principle:

Principle #28Mechanics substitution (Replace mechanical system)

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 light blocking unit effectively modulates light intensity with reduced power consumption and lower costs, enhancing the efficiency and affordability of the light source module while maintaining high light utilization efficiency.

Implementation Method 1

The light blocking unit is capable of being inserted into and moved away from a transmission path of at least one of the color light beams at a fixed frequency to block a portion of the at least one of the color light beams

Methodology Applied

Scientific EffectLight blocking: Absorption (EM radiation)

Data Source

PatentUS7839553B2Light source module

Publication Date: 2010.11.23 YOUNG OPTICS

AI summary

A light source module for a scanning projection apparatus is provided. The light source module includes a plurality of point light sources and at least one light blocking unit. Each point light source is capable of providing a color light beam. The color light beams are combined into a combined light beam and the colors of the color light beams are different. The at least one light blocking unit is capable of being inserted into a transmission path of at least one of the color light beams at a fixed frequency to block a portion of the color light beam.