6 results about "Optical phenomena" patented technology

The invention discloses an automatic driving laser radar simulation method for high-fidelity material modeling, and the method comprises the steps: carrying out the high-fidelity modeling of a complete physical process of a single laser channel, and designing a complete technical chain from laser beam modeling, material reflectivity modeling, light path modeling to post-processing. In laser beam modeling, energy space distribution is accurately depicted by introducing an angle attenuation conical beam model; in material reflectivity modeling, a bidirectional reflection distribution function system covering Lambert body, specular reflection, transmission, retroreflection and general materials is established; in light path modeling, traditional single reflection hypothesis is broken through, time-resolved Monte Carlo path tracking and kernel density estimation are adopted, simulation of multi-path reflection and transmission effects is achieved, traditional model bottlenecks are broken through, complex optical phenomena are simulated, the generation mode has expandability and controllability, rare key scenes are efficiently synthesized, and the method is suitable for large-scale popularization and application. And the method has wide field extension potential and high technical universality.

The utility model relates to the technical field of intraocular lenses, in particular to a diffraction type multi-focus intraocular lens. According to the multi-focus intraocular lens capable of reducing the bad optical phenomenon, achromatism and even zero chromatic aberration are achieved by adjusting the matching degree between the refractive index of the material and the additional focal power of the diffraction perifocus, and therefore the glare occurrence rate of the diffraction type multi-focus intraocular lens is greatly reduced, and the optical quality of the diffraction type multi-focus intraocular lens is improved. Good far-near vision or far-middle-near whole-course vision is obtained after the operation, and the visual quality satisfaction degree after the operation is improved.

The invention provides a building steel cutting defect identification method, a storage medium and a system, and the method comprises the steps: calculating a curvature tensor field of a first image, constructing a curvature-driven diffusion evolution model, setting the diffusion intensity of the model to be in direct proportion to the curvature gradient, setting the diffusion direction to be along the main direction of the curvature, and calculating the curvature tensor field of the first image; iteratively executing a diffusion process until the curvature tensor field reaches a balance state, identifying a curvature extreme point as a candidate defect seed point, and generating a second image; performing image enhancement processing on the second image to generate a third image, calculating a coherence group of the third image, recording the number of connected components and the number of holes, and performing morphological expansion and corrosion operation under the constraint of the coherence group to generate a fourth image; and carrying out spatial continuity verification on the fourth image, screening out a connected region meeting a preset requirement as a cutting defect region, and finally generating a cutting defect identification result, so as to still ensure that the cutting defect of the building steel is accurately identified under the interference of a complex optical phenomenon.

The application discloses a new view synthesis method based on convolutional neural radiance field, which is characterized by using implicit neural representation to model the change of radiance in the scene, reconstructing the scene with complex optical phenomena, and eliminating the ambiguity existing in the process of optimizing geometric information, and specifically comprises the following steps: calculating the starting point and direction of the ray, importance sampling, extracting the characteristics of the ray, decoding of the attribute network, unique surface constraint and new view synthesis, etc. Compared with the prior art, the application has the advantages that the optimization of geometric information is changed from a regression task to a classification-like task, the difficulty of the optimization problem is reduced, the ability of the method to represent the scene is improved, the effect of new view synthesis is improved, the coupling degree is low, the method can be easily combined into most of the neural radiance field-based methods designed for specific scenes, the rendering result is further improved, the quality of new view synthesis is improved, and the application has certain practical value.

The utility model discloses a light path maze teaching toy which comprises a main box body and a plurality of light path refraction cubes, and each light path refraction cube is provided with a reflector for changing a laser light path. A plurality of projection holes are formed in the left side of the main box body, a laser pen is arranged in one laser projection hole, and projection hole plugs are arranged in the rest laser projection holes; a plurality of laser transmitting holes are formed in the right side of the main box body, a projection light beam is arranged in one laser transmitting hole, and projection hole plugs are arranged in the rest laser transmitting holes. The light path maze teaching toy can help children to explore and find common optical phenomenon generation conditions or influence factors, stimulate the exploration interest, experience the exploration process, develop the preliminary exploration ability, train the scientific cognition and manual operation ability of preschool children, and improve the learning quality of the preschool children. Meanwhile, the reflection principle of the light path is explored by operating the teaching aid, the reflection principle of the light path is better understood by changing the mirror surface stacking mode, and the exploration ability of preschool children is improved.

The invention relates to the technical field of medical equipment manufacturing, and discloses a medical equipment shell manufacturing method and a medical equipment shell. The method comprises the steps that a surface treatment structure is manufactured on a base material to obtain the medical equipment shell, and the surface treatment structure comprises a pattern layer, a middle color layer and a bottom color layer which are stacked in sequence; the pattern layer is visible on the outer surface of the medical equipment shell; when the pattern layer needs to present a light-color dominant pattern, the bright-color ink layer is firstly printed, and then the dark-color ink layer is printed; when the pattern layer needs to present a deep-color dominant pattern, the deep-color ink layer is firstly printed, and then the light-color ink layer is printed; and when the pattern layer needs to present the neutral color pattern, determining the printing sequence of the target color and the reference color based on the contrast difference between the target color and the reference color of the pattern layer. Through an imaging mechanism with multi-path reflected light superposition and optical interference / mixing, the optical phenomenon of superposition of color information at different depth positions in a real space is simulated on a two-dimensional plane, and the visual depth sense and the richness of hierarchical change are remarkably enhanced.