Rotatable Display Optometer with Orientation Control
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Solution Overview
Problem
Existing optometers for subjective eye examination are poor in usability due to the separate location of the controller and display, making it inconvenient for performing near vision tests.
Innovation Solution
An optometer design featuring a controller with a switch panel and a rotatable display that can change orientation between facing the examiner and the examinee, ensuring the display screen remains constant in orientation during rotation, allowing for easy operation and improved usability.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Adaptability or versatility
If the display is made rotatable to face both examiner and examinee, then the versatility and adaptability of the controller is improved, but the device complexity increases
Solution Approach 1:
The display unit is made rotatable about a horizontal axis, allowing it to dynamically change orientation between facing the examiner and facing the examinee. This dynamic adjustment enables the single display to serve multiple functions and users, improving versatility without requiring separate displays for different users.
Solution Approach 2:
The rotatable display enables one display unit to perform multiple functions: displaying information to the examiner during setup and control phases, and displaying information to the examinee during testing phases. This multi-functionality eliminates the need for separate displays for different user roles.
2Ease of operation
If the display is rotated to face the examinee, then the ease of operation for near vision test is improved, but the display orientation becomes inverted requiring additional control mechanisms
Solution Approach 1:
The display unit can be rotated to different orientations based on the testing phase. During near vision tests, the display rotates to face the examinee for easy viewing and operation. The system dynamically adapts the display orientation to match the current operational context.
Solution Approach 2:
The control unit detects the rotational position of the display and automatically adjusts the display content orientation accordingly. When the display rotates to face the examinee, the control unit responds by inverting the display content orientation, ensuring text and graphics remain properly oriented from the examinee's perspective.
3Ease of operation
If the entire controller is turned to the examinee for near vision test, then the ease of operation is improved, but the examiner cannot monitor or operate the device simultaneously
Solution Approach 1:
The controller is segmented into functionally independent components: the display unit can rotate independently to face the examinee, while the switch panel remains fixed for examiner access. This segmentation allows simultaneous examiner monitoring/operation and examinee interaction without requiring the entire controller to be repositioned.
Solution Approach 2:
Only the display unit rotates dynamically based on testing requirements, while the switch panel remains stationary. This selective dynamic adjustment allows the display to face the examinee during near vision tests while the examiner maintains access to controls, enabling continuous monitoring and operation.
Data Source
AI summary
An optometer for subjectively examining refractive power of an examinee's eye, comprises: a phoropter which selectively disposes an optical element in front of the examinee's eye; a controller having a switch panel for transmitting a signal to the phoropter and a horizontally extending rotation axis; a display rotatable about the rotation axis of the controller, orientation of the display being changeable by its rotation between a side with the switch panel and a side without the switch panel; and a control part which controls a display screen of the display to appear in a constant orientation irrespective of whether the display is reversed upside down by its rotation.