Converting Sensor Output Optically TRIZ Cases

A rotary optical encoder uses yawed scale grating bars and a structured illumination generating arrangement to detect displacement via fringe patterns.

Curved code elements modulate light continuously, eliminating diffraction errors and quasi-stochastic inaccuracies in absolute position determination.

A small-size distributed optical fiber sensing array detects pressure, shape, and temperature using all-fiber interferometric sensors.

A field lens positioned equidistant from optical axes collimates transmitted light to increase yield while minimizing crosstalk.

A linear scanning grating splits incident light into partial beams for high-resolution angle detection across varying radii.

Guiding structures in the molding compound facilitate precise lid placement, reducing module dimensions while maintaining manufacturing yield.

A self-heterodyne phase-sensitive optical time domain reflectometer implements free multi-spatial resolution using shared acousto-optic modulators.

A perforated mask generates shadows on a fixed sensor to determine the angular position of a rotating element.

A position detection apparatus uses two grating patterns to detect phase components for high and low resolution modes.

Registration features constrain positional deviation in a rotary encoder assembly, reducing tolerance chain errors during perpendicular or axial movement.

Segmented radial grating patterns direct interference fringes to a light receiving element, suppressing noise in downsized encoders.

Parallel fiber beat signal analysis narrows receiver bandwidth requirements, reducing Brillouin sensing device costs while maintaining precision.

Asymmetric light receiving parts prevent crosstalk between neighboring slits, enhancing detection accuracy and signal output.