The current measurement equipment, which adheres to the ANSI Z87.1 standard measurement method, features an extended path length of nearly 11 m. This extended length poses challenges for laboratories or testing units in terms of space utilization and significantly impacts the energy configuration required for accurate detection. The initial phase of this study focuses on automation, entailing the development of a measuring device equipped with full automation capabilities. This device ensures the precise measurement of diopter and astigmatism data at a consistent and efficient pace. The subsequent phase aims to minimize the distance between the objective lens and the target without altering the fundamental principles of the original diopter testing system. This reduction is achieved through the utilization of optometry automatic detection technology. Concurrently, to complement the scaled-down detection equipment, precision optical targets are manufactured using semiconductor standard photomask fabrication techniques. Results indicate a substantial reduction in equipment size to <1 m, retaining the same level of precision. This reduction significantly economizes the installation space required for the instrument. The implementation of automated measurements minimizes errors stemming from human judgment and allows the device to be employed in the assessment of various safety lenses.
An improved arterial pulsation measurement (APM) system that uses three LED light sources and a CCD image sensor
to measure pulse waveforms of artery is presented. The relative variations of the pulses at three measurement points near
wrist joints can be determined by the APM system simultaneously. The height of the arterial pulsations measured by the
APM system achieves a resolution of better than 2 μm. These pulsations contain useful information that can be used as
diagnostic references in the traditional Chinese medicine (TCM) in the future.
In this research, a new module of skin treatment has been proposed. The 40 pieces of red and 36 pieces of yellow LEDs
are utilized to be the light sources in treatment the cracks and corrosions on skin, and the 4 pieces of white light LEDs
are applied in lighting on skin. In addition, the image of skin could be obtained by a CCD webcam, and the skin
inspection will be determined by number of pores in images. Finally, the good experimental results have been obtained
in human body.
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