초록 ▼

The natural resonant frequency (and phase) of a resonant mechanical system (having an spring structure that includes a material whose elastic properties change with temperature, e.g., by at least 0.05% per °C.) is tuned to a desired value by changing the temperature of at least part of the spring st

The natural resonant frequency (and phase) of a resonant mechanical system (having an spring structure that includes a material whose elastic properties change with temperature, e.g., by at least 0.05% per °C.) is tuned to a desired value by changing the temperature of at least part of the spring structure. A two-dimensional image is generated on a surface by tunign a resonant driver (having such a temperature sensitive element) to a natural resonant frequency in coordination with modulation of a beam that is raster scanned on the surface by the resonant driver.

대표청구항 ▼

A resonant mechanical system whose natural resonant frequency can be tuned, comprising a mass movable within a range of excursion, a spring structure for urging said mass toward a neutral position within said range of excursion, said spring structure being comprised of a material whose elastic prope

A resonant mechanical system whose natural resonant frequency can be tuned, comprising a mass movable within a range of excursion, a spring structure for urging said mass toward a neutral position within said range of excursion, said spring structure being comprised of a material whose elastic properties change with temperature over a desired tuning range, and a tuner for detecting a frequency of said mechanical system, and for controllably varying the temperature of at least part of said spring structure in response to said detected frequency to tune said natural resonant frequency.