Macro Photography Optical Device with Dual Diffuser Lighting
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Solution Overview
Problem
Existing stereomicroscopes and macrophotography techniques face challenges in analyzing objects with reflective surfaces due to light reflection issues, which lead to loss of information and compromised image quality.
Innovation Solution
An optical device equipped with a zoom optical assembly and a lighting system featuring a ring light and a diffuser system, where the first diffuser is integral with the mobile section and the second diffuser is bell-shaped, providing uniform and diffused lighting to prevent shadow zones and reflection-induced light trajectory alterations.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Measurement precision
If traditional stereomicroscopes or macrophotography techniques are used to analyze objects with reflective surfaces, then image acquisition is possible, but light reflection causes loss of information and compromised image quality
Solution Approach 1:
The patent introduces a diffuser as an intermediary element between the light source and the reflective object. This diffuser scatters the incident light, preventing direct reflection into the optical path while still illuminating the object uniformly. The diffuser acts as a mediator that transforms direct light into diffused light, eliminating the harmful reflection effect while maintaining illumination.
2Illumination intensity
If a ring light is added to increase exposure levels, then brightness is improved, but reflection problems are exacerbated for objects with reflective surfaces
Solution Approach 1:
The diffuser positioned between the ring light and the object serves as an intermediary that scatters the light before it reaches the reflective surface. This prevents the ring light's intense illumination from causing direct reflections, while still providing sufficient diffused light for proper exposure. The diffuser mediates between the need for brightness and the need to avoid reflection.
3Measurement precision
If macrophotography is used to achieve high magnification, then subject detail visualization is improved, but field of view is restricted and brightness is reduced
Solution Approach 1:
The patent employs a diffuser that creates excessive scattering of light, which partially compensates for the restricted field of view in macrophotography. By diffusing light from multiple angles, the system maintains adequate illumination across the limited field of view, allowing high magnification without complete loss of brightness.
4Illumination intensity
If external light sources such as flash are used to compensate for brightness loss, then exposure is improved, but image acquisition becomes more laborious
Solution Approach 1:
The diffuser integrated with the ring light creates a self-service illumination system that continuously provides diffused light during the entire observation period. This eliminates the need for manual flash activation and subsequent processing steps, making the system self-sufficient and easier to operate. The diffuser enables continuous exposure without external intervention.
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 device ensures high-quality imaging by providing uniform and diffused lighting, effectively preventing light reflection issues and enhancing image accuracy for both opaque and reflective surfaces, making it suitable for metallographic, mineralogical, and ballistic analyses.
Implementation Method 1
a first diffuser, 42, of substantially conical shape, is associated with the lower end of said movable section (32)... arranged below said ring light so as to be interposed between the light source and the subject to be photographed
Data Source
Figure 1
Figure 2~3
AI summary
Optical device for extreme macrophotography, in particular for use in the field of metallographic analysis, comprising a zoom optical assembly and a lighting system that provides for a lighting assembly permanently associated with the movable section of the optical assembly, an internal diffuser that is also integral with the movable section and an external diffuser that is integral with the fixed section of the optical assembly. The internal diffuser is placed between the lighting assembly and the sample to be displayed so that the light emitted by the lighting assembly cannot directly reach the latter but is reflected and diffused by the external and internal surfaces, respectively, of the mobile internal diffuser and the fixed external diffuser. The optical device makes it possible to display correctly metallic specimens with no reflections or those with reflective surfaces.