Stroboscopic Device Prism Light Bending Irradiation
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Solution Overview
Problem
Conventional stroboscopic devices face issues with light loss and uneven irradiation when trying to achieve a wider irradiation angle, with increased refractive power leading to suboptimal light collection at the telephoto end and complex structures due to movable reflective members.
Innovation Solution
Incorporating a prism member near the light emitter that bends light rays into the optical axis direction, allowing for efficient guidance of previously lost light rays to the light controller member, reducing light loss even with reduced refractive index, and enabling wider irradiation angles without compromising telephoto performance.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Area of moving object
If the refractive power of the first and second translucent optical members is increased to achieve further wider irradiation angle, then the irradiation angle is broadened, but the light rays cross at the telephoto end due to excessive refractive power, resulting in inability to collect light at an optimal irradiation angle
Solution Approach 1:
The patent divides the light control function into multiple components: the first translucent optical member (light collecting lens) collects light rays, the second translucent optical member (light distributing lens) distributes light rays, and the reflective plate redirects light rays that would otherwise be lost. This segmentation allows each component to be optimized for its specific function, preventing the light crossing problem at telephoto end while maintaining wide irradiation angle capability.
Solution Approach 2:
The reflective plate acts as an intermediary element that captures light rays which do not enter the light controller member at the telephoto end and redirects them to enter the light controller member. This intermediary component resolves the contradiction by providing an alternative light path that complements the refractive action of the translucent optical members without causing light crossing.
2Loss of energy
If a movable mechanism of the reflective member is used to prevent light loss, then light rays are reflected to enter the light controller member, but the structure becomes complicated
Solution Approach 1:
Instead of making the reflective member movable to track light rays, the patent inverts the approach by making the reflective plate stationary and positioned to passively intercept and redirect light rays that would otherwise be lost. This inversion eliminates the need for complex movable mechanisms while achieving the same light loss prevention effect.
Solution Approach 2:
The reflective plate is positioned to automatically intercept and redirect light rays based on the fixed geometry of the light emitter and light controller member. The system self-adjusts to different shooting ranges through the fixed geometric relationship between components, eliminating the need for active control mechanisms.
3Area of moving object
If light controller member is positioned distant from light source to broaden irradiation angle, then wide-angle coverage is achieved, but light rays do not enter light controller member at telephoto end, resulting in light loss
Solution Approach 1:
The patent addresses the light loss problem by adding a spatial dimension to the light path through the reflective plate. Light rays that would otherwise travel in a straight line and miss the light controller member are redirected through reflection, creating an alternative spatial path that enables these rays to enter the light controller member and be utilized effectively.
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 enhances light use efficiency by guiding previously lost light rays, increasing light quantity at the telephoto end by about 20% and middle range by about 10%, while maintaining effective light distribution across various angles, thus achieving a wider irradiation angle with reduced structural complexity.
Implementation Method 1
a prism member disposed near the light emitter at a position where the prism member does not cover an opening of the reflector. The prism member bends the light rays from the light source into an optical axis direction.
Implementation Method 2
a reflector for reflecting the light rays from the light source
Data Source
AI summary
A stroboscopic device includes a light emitter disposed in a light-emitter casing, a light controller member disposed in an opening of the light-emitter casing, and a prism member disposed at a position near the light emitter where an opening of a reflector is not covered. The light emitter includes a flash discharge tube and a reflector for reflecting the light rays from the flash discharge tube in an irradiation direction. The light controller member controls the light rays from the light emitter. The prism member bends the light rays emitted from the flash discharge tube into an optical axis direction.