The invention relates to an optical lens wavefront measurement method using a phase measurement deflection technology. The method comprises the steps of building a phase measurement deflection technology transmission system, sequentially arranging a CCD camera, a collimating lens, a to-be-measured optical lens, an LCD display screen and an acquisition control computer on a light path, introducingthe collimating lens to collimate stripe light, and reducing structured light distortion caused by light divergence. Due to the fact that the to-be-measured lens has a phase modulation effect, stripesare imaged to form deformed stripes, the wrapping phase of the stripes is calculated by using a four-step phase shift algorithm or Fourier transform, the gradient is derived and extracted by using alight inverse tracing method, and the wavefront slope is integrated by using a regional wavefront reconstruction algorithm to obtain characteristics of the wavefront distribution. The method providedby the invention is simple in structure, is suitable for the wavefront detection of various types of phase objects, not only can obtain the phase distribution of the phase objects, but also can obtainthe wavefront distribution, and has the characteristics of rapidness and easy operation.

Optical lens wavefront measurement method using phase measurement deflection technology

The invention provides an optical detection device, which is used for detecting a to-be-detected optical device and comprises a reference optical device, a track, at least one lens image module, a target, a computer and a light source. The reference optical device has at least one known viewing angle. Moreover, the computer stores at least one reference value, and the at least one reference valueis a reference position record in at least one reference image acquired by the at least one lens image module by referring to the identification characteristic of a test pattern of the optical devicefrom the target. Therefore, the optical detection device provided by the invention can calculate each visual angle and the relative illuminance of each visual angle in a calculation mode, is suitablefor detecting the visual angles or the relative illuminance in a large scale, and has the functions of quickly detecting, effectively achieving quality control, reducing the cost and the like.

An optical detection device

The invention relates to a system and method for detecting the transmitted wave surface of an aspheric lens, which belongs to the field of optical detection. The system for detecting the transmitted wave surface of an aspheric lens comprises a strip generating device, a light-gathering device, a light-splitting device, a first imaging device, a second imaging device and an analyzing device. By means of one of the aspheric lens to be detected and a reference lens, the image is modulated on a transmitted light optical path, and for the other one, the image is modulated on a reflected light optical path. The analyzing device conducts analysis on the image formed through the modulation of the aspheric lens to be detected and the reference lens, so as to obtain the information of the transmitted wave surface of the aspheric lens. The method for detecting transmitted wave surface of aspheric lens comprises the steps of generating stripped graphs; gathering light; splitting light path; respectively imaging by means of the aspheric lens and the reference lens; conducting analysis. The invention is flexible and rapid in use.

System and method for detecting transmitted wave surface of aspheric lens

The utility model relates to a optical detection field especially relates to a system for detect aspherical lens transmission wave face. A system for detect aspherical lens transmission wave face, it includes stripe generating device, the beam condensing unit, beam splitting device, an image device, the 2nd image device, stripe generating device produces the stripe picture, the stripe picture is located the focus?position department of beam condensing unit, beam splitting device can fall into reverberation and transmitted light by the incident light after spotlight is handled, an image device and the 2nd image device both one of set up in the transmitted light light path, another person sets up in the reverberation light path, an image device and the 2nd image device all from take that the assay function maybe will form like on reach high in the clouds and carry out the information of contrastive analysis in order to obtain aspherical lens transmission wave face. The utility model discloses a system for detect aspherical lens transmission wave face has the quick nimble advantage of using.

System for detect aspherical lens transmission wave face

The invention provides a fan-shaped strip based mirror plane defect detection system and method. The system includes strip projection equipment, an image acquisition device and a control module. The control module controls the strip projection equipment to project fan-shaped strips to a to-be-detected object. The image acquisition device is used for receiving a fan-shaped strip image reflected from the to-be-detected object and transmitting the acquired fan-shaped stirp image to the control module in a form of an image signal. The control module controls the strip projection equipment to output the fan-shaped strips by coding, decodes the fan-shaped strips acquired by the image acquisition device, solves a fan-shaped strip modulation degree by using data after decoding the fan-shaped strip image to obtain a gray-scale distribution map, and compares the data after decoding the gray-scale distribution map with the coded fan-shaped strip before output to obtain a modulation degree diagram and a defect display diagram that can observe defects.

Liu Weitao

Papers

System and method for detecting transmitted wave surface of aspheric lens

System for detect aspherical lens transmission wave face

Fan-shaped strip based mirror plane defect detection system and method