Retractable Lighting Device Reflective Member
Find Innovative SolutionsGenerate Solutions
Solution Overview
Problem
Existing electronic flash devices with retractable reflective members are limited by the device's size, restricting the effectiveness of catch light photography in achieving lively eye expressions.
Innovation Solution
A lighting device with a retractable reflective member that can be drawn to increase its area beyond its retracted size, allowing for a larger reflective surface area without increasing the device's size, utilizing a configuration of multiple reflectors that overlap minimally in the retracted state and expand fan-wise for increased surface area when deployed.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Volume of moving object
If the reflective member is made retractable inside the electronic flash device, then the device size is reduced, but the reflective surface area is restricted
Solution Approach 1:
The reflective member is designed to be dynamically changeable between retracted and extended states. The draw operation transforms the reflective member from a compact retracted state to an extended state with larger reflective surface area, allowing the device to adapt its reflective area based on operational needs while maintaining a compact form when retracted.
Solution Approach 2:
The reflective member utilizes dimensional transformation by extending in the drawing direction to increase its reflective surface area. By transitioning from a compact three-dimensional retracted form to an extended planar configuration, the reflective member achieves a larger effective area without proportionally increasing the device's overall volume.
2Reliability
If the reflective member is extended to increase reflective surface area, then catch light photography effectiveness is improved, but the device becomes more complex
Solution Approach 1:
The reflective member is divided into multiple reflectors (first reflector and second reflector) that can be independently drawn from the retraction part. This segmentation allows each reflector to be managed separately, simplifying the drawing mechanism while achieving a cumulative increase in reflective surface area through coordinated deployment of multiple segments.
Solution Approach 2:
The first reflector and second reflector are nested within the retraction part in an overlapping arrangement. This nesting configuration allows both reflectors to be stored compactly within the device body when retracted, minimizing the retraction space required while enabling both to be drawn out for extended use, effectively reducing device complexity.
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 effective catch light photography by increasing the reflective surface area, allowing for more vibrant eye expressions in photographs without the limitations of the device's size constraints.
Implementation Method 1
a reflective member that is drawably retracted in the light emitting section and is provided with reflectors that are developed by a drawing operation to reflect a part of light irradiated from the light emitting section
Data Source
AI summary
A lighting device that is capable of retracting a reflective member inside a lighting device and of deciding size of the reflective member irrespective of the size of the lighting device. The lighting device includes a light emitting section and a reflective member. The reflective member is drawably retracted in the light emitting section and is provided with reflectors that are developed by a drawing operation to reflect a part of light irradiated from the light emitting section. Area of the reflectors in a developed state is more than area of the reflectors in a retracted state.