Refractometers TRIZ Cases

An aperture filters retinal scatter to measure beam angular size, reducing device complexity while maintaining measurement precision.

An ophthalmic apparatus calculates corrected wavefront aberration data to generate vision quality evaluation indices.

A control unit defines a transparent scene zone within the superimposition area to adjust luminance and colorimetry for visual test images.

Continuous measurement without alignment wait increases reliable value count for restless subjects while reducing total examination time.

Ophthalmic measurement device compares unassisted and assisted eye areas to detect divergence caused by eyelid distortion or tear film drying.

Sequential imaging of both eyes determines refractive aberrations, resolving inaccuracy from static measurements.

Controller monitors objective refractive characteristics during subjective red-green testing to detect accommodation intervention.

A phoropter uses a partially reflecting mirror to capture and display real-time eye images for remote optical unit adjustment.

Optimizing objective lens diameter balances OCT scan range and keratometry precision in ophthalmologic apparatuses.

Software determines accommodation and vergence by tracking eye movements, eliminating subjective assessments to improve myopia control accuracy.

Acquiring eye position information determines binocular open state suitability, preventing inaccurate measurements from visual line deviation.

Smartphone-based optical projection measures presbyopia by creating virtual near-vision images on the retina, resolving trial-and-error inaccuracy.

Dynamic optical axis alignment tracks natural gaze lowering to resolve precision losses in multifocal vision compensation measurements.

A refraction device empowers patients to adjust spherical and astigmatic lenses via a movable belt system for direct visual acuity testing.

Dynamic aperture adjustment minimizes stray light interference to enhance ametropia data accuracy without excessive device complexity.

Lateral infrared light sources illuminate the ocular fundus directly, bypassing optical axis obstruction.

An imaging device captures test patterns through corrective lenses to determine optical parameters for head-mounted display configuration.

Calculates ametropic shifts via a computational model of spectral features, compensating for filter-induced focus errors without direct subject measurement.

A rotatable display optometer changes orientation between examiner and examinee modes while maintaining constant screen readability.

A control system adjusts lens drive mechanisms to set optical fogging parameters for open-field monocular examinations.

A hole mirror and concave mirror project measurement light onto the fundus while directing reflected signals to a photodetector.

A movable monitor adjusts between vertical and horizontal positions to support ophthalmic examinations.

Ophthalmologic apparatus compensates for non-linear scanner operations using feedback correction to enable wide-angle OCT measurements.

An adjustable liquid lens integrates spherical and cylindrical power control in a compact volume, resolving space constraints in ophthalmic testing devices.

A lens array produces a collimated illumination pattern for distance-independent corneal topography measurement.

Rotating measurement components maintain constant distance from the eye, resolving trade-offs between measurement precision and time.

Simultaneous multi-directional imaging detects pupil states during objective measurement to resolve precision and complexity trade-offs.

Aberrometer adjusts transduction function using linear regression to correct wave front sensor output.

Rotating examination window switches between eye characteristics while stationary optical system maintains measurement accuracy.

A predictive formulation calculates intraocular lens power using axial length and anterior chamber depth measurements.

An ophthalmologic apparatus adjusts fixation target presentation positions to increase fog amount and objectively measure eye characteristics over time.

A measurement apparatus uses a super-luminescent diode to project light onto the eye fundus for refractive power analysis.

A detachable ophthalmologic device couples to existing phoropters via a specialized interface and optical branching mechanism.

Confocal refractometer measures spherical equivalent and astigmatism without wavefront sensors, reducing stray light sensitivity for toric lens checks.

A home subjective optometer uses a rotational test object and point light source to measure refractive errors with 0.12 diopter accuracy.

Segmented illumination and imaging systems automate optometry unit positioning to resolve manual alignment bottlenecks.

A multispectral ocular surface evaluating device uses broadband illumination and polarizing structures to capture detailed spectral reflectance data across visible and near-infrared spectra.

An automated system measures eye alignment by analyzing light reflection positions on the cornea and lens surfaces.

Segmented intraocular lenses enable precise refractive power determination by measuring the first part position before optic body insertion.

Distance detection triggers retraction control to maintain safe clearance while preserving wide-angle imaging.

A subjective optometry device aligns a measurement unit with a subject eye using coordinated moving means.

Piezoelectric actuators adjust lens power based on sensor data, eliminating external glasses for myopia.

A wavefront measurement device captures refractive properties using automated optical sensing.

A surgical microscope integrates a refraction arrangement into the observation beam path to generate a structure image on the retina.

Suspended optometry units rotate away from the subject to allow direct facial expression observation and reduce pedestal footprint.

A subjective optometer uses a collimator and point light source to project an image on the retina for self-assessment of visual refractive errors.

A touch-sensitive interface manipulates retinal images and a graphical planning element to designate optical coherence tomography scan locations.

An ophthalmologic apparatus adjusts wavelength sweep speed to acquire wide-angle optical coherence tomography data.

An anterior eye tomographic apparatus identifies the scleral spur position to calculate estimated lens position.