Projector Inclination Detection and Reference Line Control
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Solution Overview
Problem
Conventional light-bulb-type projectors face difficulties in adjusting the projection attitude to ensure images are displayed comfortably on a display surface without distortion, especially when connected to light bulb fixtures with narrow openings, making it challenging for users to achieve a correct viewing angle.
Innovation Solution
Incorporating an inclination detection system and an image display control section that forms reference lines on the image formation area, allowing the projector to adjust its attitude based on detected inclination, ensuring the reference lines maintain a predetermined angle relative to the horizontal, facilitating easy and reliable adjustment of the projection attitude.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Adaptability or versatility
If a light-bulb-type projector is connected to a light bulb fixture with a narrow opening, then the projector can be installed in confined spaces, but the user cannot easily adjust the projection attitude to achieve correct image orientation
Solution Approach 1:
The patent employs an inclination detection section that detects the actual inclination of the projector enclosure and feeds this information back to the image display control section. The control section then adjusts the reference line display accordingly, providing real-time feedback to guide the user in achieving the correct projection attitude. This feedback mechanism resolves the contradiction by making the adjustment process informative and controllable despite the confined installation space.
Solution Approach 2:
The patent introduces a reference line as an intermediary visual element between the projector's internal inclination detection and the external display surface. This reference line serves as a mediator that translates the complex inclination state into a simple visual guide, enabling users to adjust the projection attitude easily even when installed in narrow openings where direct observation of image orientation is difficult.
2Adaptability or versatility
If the projector enclosure is inclined relative to the optical axis, then the projector can be installed at various angles, but the projected image becomes distorted and not horizontally aligned
Solution Approach 1:
The patent makes the reference line dynamic by continuously adjusting its display inclination based on the detected enclosure inclination. Instead of being fixed, the reference line dynamically adapts to the projector's installation angle, allowing the system to maintain image horizontal alignment precision regardless of the installation angle chosen by the user.
Solution Approach 2:
The patent changes the parameter of the reference line's inclination angle in response to changes in the enclosure's inclination angle. By dynamically adjusting this parameter, the system maintains the functional relationship that ensures horizontal image alignment while accommodating various installation angles, thus resolving the contradiction between adaptability and alignment precision.
3Device complexity
If the reference line is fixed on the image formation area, then the display is simple, but the user cannot compensate for projector inclination to achieve horizontal image display
Solution Approach 1:
The patent transforms the static reference line into a dynamic element that automatically adjusts its inclination based on real-time detection of the projector enclosure's orientation. This dynamic adjustment maintains the simplicity of the display interface while enabling effective compensation for inclination, thus resolving the contradiction between display simplicity and operational ease.
Data Source
AI summary
A projector includes a light source, a light modulator having an image formation area to form an image, a projection system that projects the image on a display surface, an enclosure that holds at least the light modulator and the projection system, an inclination detection section that detects the inclination of the enclosure with respect to an axis along the optical axis of the projection system, and an image display control section that forms a reference line on the image formation area, the reference line having a predetermined angle with respect to a horizontal line irrespective of the inclination of the enclosure, and the image display control section changes the inclination of the reference line with respect to the image formation area in accordance with the inclination of the enclosure in such a way that the reference line has the predetermined angle with respect to the horizontal line.