Battery-Powered Laser Projection Device for Portable Video Output
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Solution Overview
Problem
Current projection-type display devices are limited by their size, weight, and high power consumption, which restricts their portability and requires AC connectivity to a wall outlet, hindering portable usage and flexible image projection in various settings.
Innovation Solution
A battery-powered projection-type display device with a light source, optical modulation device, and projection lens system, utilizing diode lasers for reduced power consumption and eliminating the need for a color wheel, along with a positional interface for flexible placement, allowing operation without fixed power supplies.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Adaptability or versatility
If current projection-type display devices are used, then image projection capability is achieved, but portability is limited due to size and weight
Solution Approach 1:
The device is divided into two main segments: a stationary base containing heavy components (light source, battery, control electronics) and a movable projection chamber that can be positioned independently. This segmentation allows the projection head to be lightweight and portable while the base remains stationary, resolving the contradiction between portability and weight.
2Adaptability or versatility
If current projection-type display devices are used, then image projection capability is achieved, but flexible usage is restricted due to high power consumption
Solution Approach 1:
The patent replaces traditional high-power lamp-based illumination with laser diodes, which consume significantly less power. This substitution enables battery operation and flexible usage in locations without fixed power supplies, resolving the contradiction between usage flexibility and power consumption.
3Power
If fixed power supply connectivity is required, then sufficient power is available, but portable usage is handicapped
Solution Approach 1:
The power system is segmented into a large-capacity battery in the stationary base and a low-power projection chamber. The base provides sufficient power storage for extended operation, while the movable chamber consumes minimal power, enabling portable usage without being constrained by fixed power supply connectivity.
4Duration of action of moving object
If device endurance on battery power is increased, then flexible usage in remote locations is enabled, but power consumption must be reduced
Solution Approach 1:
The patent employs laser diodes instead of traditional lamps, which dramatically reduce power consumption. This substitution extends device endurance on battery power, enabling flexible usage in remote locations without fixed power supplies while maintaining adequate illumination for projection.
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
Enables portable and flexible video output in diverse locations, extending usage beyond areas with AC power, with reduced size and weight, and increased endurance on limited battery power, while maintaining image quality and size up to 30 feet.
Implementation Method 1
A recent increase in projector sales has been motivated by boardroom and classroom usage... consumers are forced to rely on AC connectivity... hampered by size and weight. Moreover, due to the high power consumption of the current designs
Implementation Method 2
an optical modulation device for selectively transmitting light generated by the light source according to video data included in a video signal provided to the optical modulation device
Implementation Method 3
a projection lens system for outputting light transmitted by the optical modulation device along a projection path
Implementation Method 4
The display device additionally comprises at least one battery that stores electrical energy. The display device also comprises an electrical energy transport system configured to transmit electrical energy from the battery to the light source and to transmit electrical energy from the battery to the optical modulation device
Data Source
AI summary
Described herein are devices that provide projection-type video output in a portable design. The projection-type display devices include a battery that stores electrical energy. The battery increases display device portability and flexible usage by permitting display device operation in locations not serviceable by a fixed power supply. For example, inclusion of a battery extends projector-type display device usage into a car, library, remote environment, or any other setting where fixed power outlets are not readily available or within power cord reach. To increase device endurance from a finite battery power supply, the present invention may also implement one or more hardware designs that reduce power consumption.