Vehicle Lighting Hologram Element Visibility
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Solution Overview
Problem
Current vehicle lighting apparatuses are limited in enhancing road users' perception of signal light functions, particularly in providing adequate visibility and safety in road traffic scenarios.
Innovation Solution
Incorporating a hologram element as a second optical unit to generate a holographic light image in conjunction with a conventional signal light distribution, allowing for enhanced visibility and an enlarged perceptible light area by spacing the signal light distribution and holographic light image apart, which can be activated independently and integrated in a compact, space-saving manner within the lighting apparatus.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Illumination intensity
If a conventional signal light unit with a single light source and optical unit is used, then the device complexity is low, but the visibility and perceptible light area of the signal function are limited
Solution Approach 1:
The patent merges a conventional signal light unit (first light source + first optical unit) with a holographic light unit (second light source + hologram element) into a single integrated lighting apparatus. The housing accommodates both units, and both can be activated independently or together, combining their functions to enhance visibility while maintaining a unified device structure.
Solution Approach 2:
The lighting apparatus is designed with multi-functionality by incorporating both a conventional signal light function (through the first light source and optical unit) and a holographic light function (through the second light source and hologram element). This allows the single device to provide enhanced visibility through multiple mechanisms simultaneously or independently.
2Illumination intensity
If the holographic light image is generated inside the housing, then the device complexity is reduced, but the visibility of the signal light function is limited
Solution Approach 1:
The hologram element is positioned to project the holographic light image in a direction extending outward from the housing, utilizing the spatial dimension outside the housing for image display. This allows the image to be visible in three-dimensional space beyond the housing boundaries, enhancing visibility without significantly increasing housing volume.
3Area of stationary object
If the hologram element is attached to the inside of the cover lens, then the device complexity is reduced, but the illuminated area around the cover lens is limited
Solution Approach 1:
The hologram element creates a holographic light image that is an optical copy or representation of the signal light distribution. This copied image appears in space around the cover lens, effectively expanding the illuminated area without adding physical light-emitting surfaces in those locations.
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 significantly improves the visibility and perception of signal light functions, particularly around the cover lens, by creating an additional illuminated area that enhances road traffic safety through the use of a holographic light image that can be expanded both in front of and behind the cover lens, and can be designed to be space-efficiently integrated within the vehicle lighting apparatus.
Implementation Method 1
the volume hologram element is designed as a film in which two-dimensional photopolymers are integrated... used to bend the second light beam within a defined angle and/or spectral range
Implementation Method 2
a first optical unit for deflecting a first light beam emitted by the first light source... designed to generate the specified signal light distribution
Data Source
AI summary
A lighting apparatus for vehicles with a light source unit and optical equipment for generating a specified signal light distribution to provide a specified signal function. The optical equipment consists of at least two optical units. A first optical unit deflects a first light beam emitted by the first light source is designed to generate the specified signal light distribution. A second optical unit, a hologram element, is used to deflect a second light beam generated by the second light source to create a holographic light image so that the specified signal function consists of the signal light distribution and the holographic light image that is spaced at a distance.