Projector OSD Deformation for Anamorphic Lens Detection
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Solution Overview
Problem
In projectors with an anamorphic system and on-screen display (OSD) function, the aspect ratio change degrades the visibility of menu screens and other OSD objects, as they are expanded or narrowed in a fixed direction.
Innovation Solution
A projector configuration that detects the insertion of an optical member, such as an anamorphic lens, into its optical path and adjusts the OSD image generation accordingly, using stored OSD data to maintain visibility by deforming the OSD image in the direction of expansion to prevent area occupation issues.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Adaptability or versatility
If an anamorphic system is added to change the aspect ratio of the projected image, then the aspect ratio of the displayed image is changed, but the menu screen and OSD objects are deformed and visibility is degraded
Solution Approach 1:
The OSD image generation is dynamically adjusted based on the detection of the anamorphic lens state. When the anamorphic lens is detected, the OSD image is generated with deformation matching the lens characteristics; when not detected, the OSD image is generated in the normal state. This dynamic adaptation resolves the contradiction by making the OSD visibility contingent on the optical configuration.
Solution Approach 2:
The generation section changes the parameters of the OSD image (deformation, aspect ratio) based on the detected optical member state. By altering the OSD image parameters to match the anamorphic lens characteristics, the system maintains OSD visibility and usability while the anamorphic system changes the projected image aspect ratio.
2Adaptability or versatility
If the OSD image is expanded in a fixed direction to match the anamorphic lens, then the aspect ratio change is accommodated, but the OSD image may occupy a large part of the projection area
Solution Approach 1:
The generation section adjusts multiple parameters of the OSD image simultaneously, including deformation, aspect ratio, and size. By changing these parameters based on the anamorphic lens characteristics, the system achieves proper OSD adaptation while controlling the OSD image area to prevent it from occupying too much of the projection area.
Data Source
AI summary
A projector includes an OSD image generation section that generates an OSD image, an OSD processor that generates a combined image in which the OSD image is superimposed on an input image, a light source section that outputs a light flux, a light modulator that modulates the light flux in accordance with the combined image to produce image light, a projection system that projects the image light, and a placement detector that detects whether an additional lens that changes the ratio between values in intersecting two direction in the image light has been inserted into the optical path of the projection system, and when the placement detector detects that the additional lens has been inserted, the OSD image generation section generates the OSD image in accordance with the inserted additional lens.