Cooking device
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Solution Overview
Problem
Conventional heating cooking devices experience halation issues when imaging tall objects due to light reflection from the ceiling illuminator, while illuminating only from the side walls results in insufficient light for the upper surface, leading to low imaging accuracy.
Innovation Solution
A heating cooking device design featuring a semitransparent top panel that diffuses light from an upper illuminator, providing even illumination to the upper surface of objects, combined with an inclined camera optical axis to reduce halation and enhance imaging accuracy.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Illumination intensity
If an illuminator is disposed on the ceiling to illuminate the inside of the chamber, then the amount of light for imaging is increased, but strong halation is caused in captured images when imaging tall objects
Solution Approach 1:
A semitransparent panel is introduced as an intermediary between the illuminator and the chamber interior. The panel diffuses the light from the illuminator, converting direct light into scattered light that illuminates the chamber uniformly without causing halation in captured images.
Solution Approach 2:
The optical properties of the ceiling structure are changed by introducing a semitransparent panel that modifies light transmission characteristics. The panel transforms the light distribution pattern from direct concentrated beams to diffused uniform illumination, changing the illumination intensity distribution parameter.
2Object-affected harmful factors
If only a side wall illuminator is used to avoid halation, then halation is avoided, but enough light cannot be supplied to the upper surface of tall objects, resulting in low imaging accuracy
Solution Approach 1:
The illumination approach is changed from horizontal side-wall illumination to vertical top-down illumination through the semitransparent panel. This dimensional change allows light to reach the upper surfaces of tall objects effectively while the diffusion effect prevents halation.
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 ensures adequate light is supplied to the upper surface of objects, improving imaging accuracy and preventing halation, while maintaining a wide field of view and preventing external light interference.
Implementation Method 1
a semitransparent member configured to diffuse the light from the first illuminator to illuminate downward
Implementation Method 2
light from the illuminator disposed on the ceiling is reflected by an upper part of the object to be heated
Data Source
Figure 1~2
Figure 3~4
Figure 5
AI summary
A heating cooking device includes: heating chamber (110) having front face opening (102); and a heater to heat object (2) to be heated stored in heating chamber (110). The heating cooking device further includes: camera (154) that has optical axis (157) inclined with respect to a vertical direction and is disposed on upper wall (111a) of heating chamber (110) to face inside of heating chamber (110); and first illuminator (171) that illuminates the inside of heating chamber (110) from a side of upper wall (111a) of heating chamber (110). The heating cooking device further includes top panel (140) that is disposed below upper wall (111a) of heating chamber (110), is formed of a semitransparent member to illuminate downward while diffusing light from first illuminator (171), and is provided with top panel opening (141) serving as an opening through which camera (154) images the inside of heating chamber (110).