149 results about "Light penetration" patented technology

The invention discloses a mobile phone battery cover structure based on a composite cloth coating and a preparation method of the mobile phone battery cover structure, and the mobile phone battery cover structure comprises a base material layer, an attaching adhesive layer, a cloth layer, a PU functional layer and a surface treatment layer which are sequentially laminated and combined. And precise simulation of a natural material is synchronously realized in visual and tactile dimensions. The polyurethane layer autonomously forms a microscopic topological structure under curing at a specific temperature, so that scattering distortion is avoided when light penetrates through the woven texture of the fabric, and a clear and three-dimensional fabric pattern is presented; and the synchronously generated surface micro-convex points are regulated and controlled through precise friction, so that the battery cover leather is endowed with soft damping touch feeling. The design breaks through an inherent frame of separation of a visual layer and a tactile layer in a traditional transfer printing process, and unification of cloth texture light transmission performance and biological skin feeling feedback is achieved on a smart phone component for the first time.

The embodiments of the present application relate to a photosynthetic bioreactor system in the field of bioreactors. The system includes at least one bioreactor with a transparent cultivation region for photosynthetic microorganisms; a conditioning device for producing ideal liquid culture medium; a collection device for recovering organic matter from the bioreactor; and a nano-bubble generating device for converting carbon dioxide-containing gas into minute bubbles for liquid introduction. The bioreactor includes a culture medium inlet, a culture medium outlet, and a gas inlet communicating with the transparent cultivation region. The conditioning device connects to each bioreactor's culture medium inlet, the collection device connects to each culture medium outlet, and the nano-bubble generating device connects to each air inlet. The transparent cultivation region has a thickness less than a preset dimension to enable light penetration.

This invention discloses a lipid assembly loaded with 5-aminolevulinic acid and its preparation method. The lipid assembly is a hollow sphere with a core consisting of a hydrophilic phospholipid-chelating agent conjugate formed by chelation with a reactive phospholipid PEG reagent. The outer layer of the phospholipid-chelating agent conjugate is loaded with 5-aminolevulinic acid via hydrazone bonds, and then combined with a radionuclide as an internal light source excitation photosensitizer. The lipid assembly is loaded with 5-ALA via hydrazone bonds. Utilizing the acid-sensitive bond-breaking characteristics of hydrazone bonds and the prodrug properties of 5-ALA, combined with a radionuclide labeled on the surface of the lipid assembly as an internal light source excitation photosensitizer, this invention can overcome the limitations of external light penetration depth in traditional photodynamic therapy, achieving deep PDT treatment. Combined with chemotherapy drugs, it can minimize the toxic side effects on normal tissues during the combined use of radionuclides and photosensitizers in targeted therapy.

The application discloses a constant-tension-based textile multidirectional tensile strength automatic testing device and method, relates to the tensile strength detection technical field, and comprises a rigid frame system; a high-elastic fabric optical response mechanism is integrated on a double-column portal frame of the rigid frame system and is used for reacting fiber damage processes through light transmittance and light spot change of the fabric; the high-elastic fabric optical response mechanism comprises a sealed light isolation component, a light source component and an imaging component; the light source component comprises a pulse LED light source array, a lampshade and a horizontal movement driving unit which are equidistantly arranged along a fabric stretching direction. The application improves the prior art which can only record the limit value when a sample is completely broken and cannot capture microcracks generated by fiber step-by-step failure in a stretching process when the fabric tensile strength is detected. The application has the advantages that the fiber breaking process in the fabric can be directly reflected through light spot change formed by light penetration of the fabric when the fabric tensile strength is detected.

The utility model discloses a newborn hand back arteriovenous observation auxiliary device which comprises a palm placing plate and an arm placing plate, an included angle exists between the palm placing plate and the arm placing plate, a lamp ball is arranged on the palm placing plate, the lamp ball is arranged at the position corresponding to the palm center of a sick child, the wrist of the sick child is placed on the arm placing plate, the hand is held on the surface of the lamp ball, and the lamp ball can light up the hand back arteriovenous. The auxiliary device can assist the palm of a child patient in turning downwards to expose arteriovenous on the back of the hand, and light rays penetrate through the back of the hand of the child patient through the lamp ball to illuminate the arteriovenous, so that medical staff can clearly observe the arteriovenous on the back of the hand of the child patient, and the success rate of venipuncture is improved.

The invention provides a cobalt-iridium metal complex, nanoparticles, a preparation method and application, and belongs to the technical field of photodynamic therapy drugs. The structural formula of the cobalt-iridium metal complex is shown as a formula (I). The invention also provides a preparation method of the cobalt-iridium metal complex. The invention also provides nanoparticles, the cobalt-iridium metal complex prepared by the invention has a chemiluminescence property, so that the cobalt-iridium metal complex can simultaneously realize photo-thermal, photodynamic and ultrasonic synergistic thrombolysis treatment effects, and the oxidation resistance of the cobalt-iridium metal complex has a remarkable curative effect on a vascular injury part. The complex provided by the invention has good photo-thermal, photodynamic and ultrasonic response capabilities, and can overcome the problems of short excitation wavelength of exciting light and limited light penetration depth required by the existing metal iridium complex. Experiments show that the material has a good treatment effect on thrombus.

The application relates to long-afterglow light-emitting concrete and a preparation method thereof, and belongs to the technical field of building engineering materials. The long-afterglow light-emitting concrete is prepared from the following components: cementitious material 420-485 parts by weight, water reducing agent 8-10 parts by weight, long-afterglow light-emitting material 5-10 parts by weight, admixture 5-7.5 parts by weight, and water 50-80 parts by weight. The long-afterglow light-emitting material is combined with high-performance concrete, the light penetration and excellent light-emitting performance of the long-afterglow light-emitting material are utilized, and high-performance long-afterglow light-emitting concrete with high strength and long afterglow time is obtained, which can be used in the fields of emergency passage indication, weak light illumination, building decoration and art crafts.

The utility model relates to a warning light, its technical scheme main points are: including: transparent shell cover, light emitting module, be used for the light collecting module of light collecting of light emitting module, battery, and shell, the shell cover detachable cover is established on the shell, the inside of shell is provided with the battery clamping groove for preventing battery displacement, the battery is placed in the battery clamping groove, the light emitting module is installed in the inside upper end of shell, and is located the top of battery clamping groove, the light emitting module is connected with battery electricity, the light collecting module is installed in the inside of shell cover, the whole structure is stable, and the installation is convenient, through setting up battery clamping groove, when assembling battery, the battery is limited in the inside of shell, avoids the battery and appears displacement in the use process, through the light collecting module light collecting to light emitting module, makes the light ray penetration of light emitting module stronger, realizes its long distance light warning function.

The present disclosure provides an imaging device, comprising an imaging module and a light source module; the light source module is used to generate incident light; wherein the incident light penetrates a first target and is incident to a second target to reflect to form reflected light, the first temperature corresponding to the first target is higher than the second temperature corresponding to the second target; the imaging module is used to receive the reflected light to generate a target image corresponding to the second target. The imaging device of the present disclosure integrates the imaging module and the light source module, the light source module generates incident light that penetrates the first target and is incident to the second target to reflect to form reflected light, so that the imaging module generates a target image corresponding to the second target based on the reflected light, realizes penetration of the first target, illumination of the second target, effective and accurate imaging recognition of the second target, and improves the user's experience and the product performance of the imaging device.

The embodiment of the utility model discloses a light-transmitting structural member and a lighting window. The light-transmitting structural member is used for transmitting visible light. The light-transmitting structural member has a reference surface, and the light-transmitting structural member coincides with the reference surface. The light-transmitting structural member is provided with a light-transmitting texture area, the surface of the light-transmitting texture area is a free-form surface, and the free-form surface has a non-uniform refraction effect on visible light. Any point on the free-form surface has a vector height relative to the reference surface, and the vector height of any point is a vertical distance from the point to the reference surface; the value range of the rise of all points on the free-form surface is greater than or equal to 0 and less than or equal to 3mm. The light-transmitting structural member can be applied to indoor lighting of a building, and after outdoor light penetrates through the light-transmitting structural member, a special projection lighting effect can be projected on an indoor target surface (such as a floor or a wall surface).

This invention relates to the field of cholesteric liquid crystal display technology. The invention discloses a cholesteric liquid crystal display device and its fabrication method. By using a dam structure to divide a single-layer liquid crystal cell into multiple pixel regions, and by injecting liquid crystal material containing a photosensitive chiral agent, selective exposure processing can form multiple cholesteric liquid crystals with different pitches in situ within a single liquid crystal layer, each reflecting different colors of light. This achieves full-color display in a single-layer structure, significantly simplifying the device structure, reducing overall thickness and manufacturing costs, and minimizing light loss due to light penetration through multiple layers. Furthermore, during processing, only two liquid crystal injections are required, along with illumination processing, to obtain three pixel regions reflecting different colors, greatly reducing the number of device processing steps.

The invention relates to the technical field of medical apparatus and instruments, discloses an antibacterial photodynamic therapy light-operated catheter system based on targeted delivery, and solves the technical problems of insufficient light penetration depth and active oxygen non-targeted tissue damage when traditional aPDT is used for treating deep tissue infection. Comprises: a sterile flexible catheter body including at least an inflow lumen and an outflow lumen; the light source module is integrated in the catheter body and is used for providing excitation illumination in vitro or in a specific cavity; the photosensitive medicine storage and delivery module is communicated with the inflow cavity; the reaction cavity is arranged in the catheter body / at the near end, the photosensitive medicine is activated by the light source when flowing through the area, and a photochemical product with bactericidal activity is generated. Through a working mode of in-vivo targeted release of the photoactivated antibacterial solution, generation and delivery of antibacterial active substances in a deep infection focus are realized, non-targeted damage caused by direct irradiation of high-energy light to in-vivo tissues is avoided, and safety, effectiveness and clinical application range of aPDT in deep infection treatment are remarkably improved.

The invention discloses a manicure phototherapy system with a skin care function. The manicure phototherapy system comprises a phototherapy machine body, a light source assembly and a light filtering assembly. And an illumination cavity with a hemispherical concave surface is formed in the phototherapy machine main body. The light source assembly comprises a first light source used for curing nail polish gel and a second light source used for skin beautifying, the emission wave band of the first light source is located in an ultraviolet light area, and the emission wave band of the second light source is located in a visible light or infrared light area. The light filtering assembly is configured to be worn on the skin surface of a limb to be illuminated and expose a fingernail area; the light filtering assembly is made of selective light-transmitting materials and is configured to block light emitted by the first light source and allow light emitted by the second light source to penetrate through. According to the invention, through combination of specific light source arrangement and a spectrum selection technology, the efficient curing of the nail polish gel is ensured, ultraviolet rays causing skin blackening are effectively shielded, and synchronous skin beautifying and nursing are realized by using transmitted red light or infrared light.

A spherical brush palm module is characterized by comprising an LED light source used for projecting light; the receiver is positioned in the middle of the LED light source and is used for receiving a reflected signal of the light; the spherical cover is positioned on a light path of the light rays and is used for uniformly emitting the light rays; and the center of the spherical cover is transparent, so that the light rays penetrate and irradiate the receiver. The spherical cover is adopted to process the light path, so that the light path is more matched with the characteristics of the palm surface, the palm can be irradiated more uniformly, meanwhile, the center of the spherical cover is transparent, and the spherical cover is matched with the palm, so that the environmental interference can be reduced, and the anti-interference capability is obviously enhanced.

This invention discloses a spray / spray-enhanced industrial photocatalytic reactor and its method. The reactor includes a light-transmitting and pressure-resistant reaction chamber, a spray / spray unit, a lighting unit, a gas-liquid separation unit, and a pressure control unit. By atomizing the liquid to be reacted into microdroplet clusters and / or forming a thin liquid film, the equivalent optical path of the liquid phase is significantly shortened, improving light penetration and photon utilization. Simultaneously, combined with pressure control structures such as back pressure valves and pressure stabilizing tanks, and gas-liquid separation / demisting structures, controllable pressure and low pressure drop are achieved under continuous operation. The reaction chamber material is not limited to quartz glass, but can also be borosilicate glass, tempered glass, transparent ceramics, or sapphire, etc.; the light source is not limited to LEDs, but can also be xenon lamps, halogen lamps, mercury lamps, lasers, or sunlight simulators, etc. The system can operate in a cyclic or multi-stage series, suitable for the scale-up and integration of various industrial photocatalytic processes.

The invention provides a liquid crystal display. The liquid crystal display comprises a backlight module, a reflection filter film and a wavelength conversion film. The backlight module comprises a plurality of light-emitting diodes, and each light-emitting diode can emit a first light ray. The reflective filter film is disposed on one side of the backlight module to receive the first light. The reflective filter film has the following spectral characteristics. The reflective filter film allows at least part of light in a first wavelength range to penetrate; the first wavelength ranges from 370 nanometers to 450 nanometers. The reflection filter film can at least partially block light rays in the second wavelength range from penetrating and reflect the light rays in the second wavelength range; the second wavelength ranges from 450 nanometers to 900 nanometers. The wavelength conversion film is arranged on the side, away from the backlight module, of the reflection filter film, and the wavelength conversion film can conduct optical wavelength conversion on the first light to form second light. Therefore, the utilization efficiency of the light source is greatly improved, the condition of light loss is avoided, and the image display brightness is improved under the condition of lower power consumption.

The invention provides an ultrasonic activated rhenium cyanine dye complex nano preparation, which is characterized in that heptamethine cyanine dye (IR-780) and rhenium (I) tricarbonyl center are coupled through a covalent bond to construct a novel complex Re-Cy7. According to the molecular design, ultrasonic synchronous triggering dual effects are achieved by expanding a pi-conjugated system, oxygen-independent-form. OH is efficiently generated through an I-type mechanism, and a therapeutic dose of CO is accurately released. Furthermore, a nano preparation (Re-Cy7NPs) is constructed through self-assembly of Pluronic F-127, so that the water solubility and the targeted accumulation capacity of an infected part are remarkably improved. The technology breaks through the existing limitation at one stroke: the restriction of an anoxic environment on SDT is overcome, the constraint of light penetration depth on gas release is relieved, efficient synergy of. OH and CO is realized on a single molecule level, and a brand new solution is provided for radically treating MDR infection.

The invention provides a self-powered display device. The self-powered display device comprises a substrate, a first photoelectric conversion unit, a light-transmitting display module and a wireless charging module, wherein the substrate is provided with a display area and a non-display area; the first photoelectric conversion unit is arranged on the substrate and located in the display area. The light-transmitting display module is stacked on the first photoelectric conversion unit. The first light penetrates through the light-transmitting display module, and the first photoelectric conversion unit converts the first light into first electric energy and provides the first electric energy to the light-transmitting display module. The wireless charging module is arranged on the substrate and located in the non-display area, and the wireless charging module receives the second light rays, converts the second light rays into second electric energy and provides the second electric energy for the light-transmitting display module. The wavelength range of the first light is different from the wavelength range of the second light. Therefore, the power generation capacity can be improved and the wireless charging function is provided.

The application relates to a light penetration type visual injection molding system and method with temperature and pressure measurement functions. The injection molding system comprises a movable mold, a camera, a first glass, a cavity insert, a second glass, a light emitting part, a fixed mold, a pressure measuring device and a temperature measuring device. The movable mold is provided with a mounting groove, an observation window, a first fixing groove and a second fixing groove, the camera faces the observation window, the first glass, the cavity insert, the second glass and the light emitting part are sequentially arranged in the mounting groove along a first direction, the fixed mold is attached to or adjacent to the movable mold, the pressure measuring device is arranged in the first fixing groove, and the temperature measuring device is arranged in the second fixing groove. The injection molding system of the embodiment of the application has the advantages of simple structure, compact layout, no need to customize the fixed mold, no need to transform the injection molding machine, real-time observation of the melt flow state, synchronous acquisition of pressure data and temperature data, low manufacturing cost, reduction of experimental cost and experimental time, and meeting of different experimental research requirements.

The utility model discloses a kind of hand warmer integrated with mirror display 3D pattern, including middle frame;Mirror component is arranged in the one side of the middle frame, the mirror component is integrated with digital display component and image display component in, the digital display component is used to show temperature data, the image display component is used to show photo image;Heating component is arranged in the other side of the middle frame;PCB board is arranged in the middle frame, the PCB board is integrated with control circuit and the battery for the control circuit power supply, the battery is pasted on the back of PCB board by back force glue;The utility model is by setting photo in reflector back, and cooperate with specific back light circuit, user can easily control the same area between clear mirror and bright photo display Switching;When not lighting back light, reflector provides perfect daily mirror function;When lighting back light, light ray penetrates reflector and illuminates rear photo, so that it is clearly displayed through light-transmitting lens, realizes personalized display.

In one aspect, compositions and methods for making networks from solidified aqueous build materials are described herein. In some embodiments, a composition described herein comprises an aqueous build material, a photoinitiator, and a photoacid. In some cases, the aqueous build material comprises aqueous silk fibroin. Further, in some embodiments, the composition or method includes the use of a biocompatible, light-absorbing additive material configured to control light penetration. The aqueous build material is solidified upon application of an illumination beam or electric signal to desired locations of a bath comprising the aqueous build material.

The utility model relates to the technical field of toys, and discloses a bent rod structure and a pedal piano fitness frame, the bent rod structure comprises a light emitting assembly, a hose assembly, a fixing assembly and a light control assembly, and the light emitting assembly is used for providing a light source; the hose assembly is arranged on the light-emitting assembly in a sleeving mode, and light emitted by the light-emitting assembly penetrates through the hose assembly. The fixing assembly is connected with the two ends of the hose assembly so that the hose assembly can be in a bent state. The light control assembly is electrically connected with the light-emitting assembly so as to control the light-emitting assembly to be turned on or turned off. According to the utility model, through the design of the light-emitting component, the light control component is adopted to independently control the opening or closing of the light-emitting component, so that the bent rod structure has a shining function, the function of the pedal piano fitness frame is effectively increased, the functional diversity of the bent rod structure is realized, and the light-emitting component is independently controlled through the light control component; and the circuit is separated from the pedal piano part, so that the flexibility of the toy playing method is effectively improved.

The application belongs to the technical field of lens fixing equipment, and specifically relates to a lens fixing device, which comprises a base and a rotating cover rotatably installed on the base, a through hole for light penetration is arranged at the center of the base and the rotating cover, at least two groups of fixing rods and slide rods are uniformly arranged outside the through hole, the fixing rods and the slide rods on the base correspond to the slide rods and the fixing rods on the rotating cover respectively, and a glue-free elastic winding belt is sleeved and installed on the corresponding fixing rods and slide rods, and the glue-free elastic winding belt is used for winding and fixing the lens between the rotating cover and the base. The lens is installed by the base and the rotating cover and cooperated with the glue-free elastic winding belt, winding positioning of the lens edge can be realized, damage of the lens surface caused by the existing fixing chuck is effectively avoided, the installation mode of plug-in and rotation driving is adopted, the installation and disassembly of the lens are facilitated, and the operation difficulty is effectively reduced.

The invention discloses a display device which is provided with a display area and a peripheral area. The display device comprises a display panel, a substrate, at least one illumination light emitter, an illumination light penetrating module and a first illumination light reflecting layer. The substrate is located on the light emitting surface of the display panel. The illumination light emitter is used for emitting illumination light. The illumination light penetration module includes a light guide layer, wherein the light guide layer is disposed on a plane defined by a first direction and a second direction. Illuminating light may enter the light guide layer from at least one side of the light guide layer. The first illumination light reflecting layer is arranged on the light guide layer along the stacking direction and is arranged in the peripheral area. The illumination light penetrates through the light guide layer after being reflected by the first illumination light reflecting layer. A vehicle device is also provided.

A single-seed and double-seed alternate peanut seeding device, solving the problem that concentrated distribution of seeds during current peanut seeding reduces airflow and light penetration between crops, so that it is impossible to exert advantages of individual plants and to change the distribution form of the seeds according to requirements. The seeding device comprises two seeding assemblies (1) having the same structure. Each seeding assembly (1) comprises a housing (2) and a seeding disc (8). A detachable rotating shaft (9) is fixedly connected to the seeding discs (8); two ends, i.e. left and right ends, of the rotating shaft (9) pass through the housings (2) and are rotatably connected to the housings (2). The outer circumference of each seeding disc (8) is fixedly connected to a plurality of double-seed sowing members (10) circumferentially uniformly distributed and a plurality of single-seed sowing members (11) circumferentially uniformly distributed; the double-seed sowing members (10) and the single-seed sowing members (11) are equal in number, and are uniformly and alternately arranged. When the two seeding assemblies (1) are connected by means of the rotating shaft (9) to rotate synchronously, the positions of the single-seed sowing members (11) on one seeding assembly (1) are the same as the positions of the double-seed sowing members (10) on the other seeding assembly (1). The seeding device can perform seeding uniformly and efficiently, increase the seed survival rate, improve airflow and light penetration, and also reduce planting costs.

The invention discloses an LCD biological 3D printing device and method, and belongs to the technical field of biological 3D printing.The LCD biological 3D printing device comprises a printing chamber and an electrical room, a partition plate is arranged at the bottom of the printing chamber, a liquid groove is formed in the upper surface of the partition plate, a liquid adding structure for adding liquid into the liquid groove is arranged on a cabin body of the printing chamber, and a printing platform is arranged above the liquid groove; a lifting structure for driving the printing platform to lift is arranged in the cabin body, and a temperature controller is arranged in the cabin body; array type curing light sources are arranged in the electrical chamber, the curing light sources are located under the liquid tank, and the partition plate is provided with a liquid crystal display (LCD) through which light rays of the curing light sources penetrate; the liquid adding structure, the temperature controller, the lifting structure and the curing light source are all electrically connected with the controller. By the adoption of the LCD biological 3D printing device and method, the problems that biological cells printed by an existing 3D printing device are poor in activity and low in precision can be solved.

The invention provides a display panel, a driving method thereof and a display device, and relates to the technical field of display, the display panel comprises a plurality of pixel units arranged in an array, each pixel unit comprises a red sub-pixel, a green sub-pixel and a blue sub-pixel, the area of the red sub-pixel in each pixel unit is larger than that of the green sub-pixel, and the area of the blue sub-pixel in each pixel unit is larger than that of the red sub-pixel. The area of the green sub-pixels is larger than that of the blue sub-pixels. According to the display panel, the light penetration rate of the red sub-pixels can be increased, high peak brightness is achieved, and the display effect of the display panel is good.

The invention is suitable for the technical field of electronic equipment, and provides a display module packaging method and a display module, and the display module packaging method is characterized by comprising the following steps: packaging a PCB substrate to obtain a packaging adhesive layer; a plurality of LED assemblies are welded on the PCB substrate, and each LED assembly is located between the PCB substrate and the packaging adhesive layer; adding a carbon black layer on the packaging adhesive layer; and performing windowing operation on the carbon black layer to enable the LED assemblies to be in one-to-one correspondence with the windows. According to the LED module, the window is formed in the carbon black layer, the carbon black layer ensures that the blackness of the display module in the black screen process is sufficient, high contrast ratio is achieved, light of an LED does not need to pass through the carbon black layer after penetrating through the packaging adhesive layer, loss caused by the fact that the light penetrates through the carbon black layer is avoided, the transmittance of the LED module after packaging is improved, and brightness is higher.

An electronic device with a light-emitting structure comprises a circuit unit and a side plate unit, the circuit unit comprises a circuit board and a light-emitting module arranged on the circuit board, and the side plate unit comprises a side plate body arranged on the side edge of the circuit board and a characteristic light-transmitting structure arranged on the side plate body. Light emitted by the light-emitting module penetrates through the characteristic light-transmitting structure and is output outwards. Therefore, a structure capable of emitting light on the side plate is provided, the light-emitting position can be combined with the pattern, and a circuit with various light effects can be generated.

Procedure (200), comprising: Obtaining (201) information regarding an instantaneous angle of the sun; Determine (216) the position of the sun using the information obtained in a Cartesian coordinate system; Defining (218) a ray (500) from a point of particular importance (400) within a vehicle (100) in the direction of the sun's position; and Determine (220) whether the ray (500) penetrates a transparent surface (110) of the vehicle (100), for use in determining (226, 228) whether the spot of particular importance (400) is irradiated by the sun's rays when the ray (500) penetrates the transparent surface (110); wherein the transparent area (110) comprises a plurality of glass surfaces (112, 114, 116, 118, 120, 122, 124) of the vehicle (100), wherein the method (200) further comprises: Define (220) a plurality of planar, bounded area regions (600, 700, 800) for the plurality of glass surfaces (112, 114, 116, 118, 120, 122, 124); wherein the step of determining (220) whether the ray (500) penetrates the transparent surface (110) includes determining (221) whether the ray (500) passes through a region consisting of the majority of substantially planar, enclosed planar areas (600, 700, 800) permeate, for use in determining (226, 228) whether the area of ​​particular importance (400) is irradiated by the sun's rays if the ray (500) penetrates the transparent surface (110); wherein the method (200) comprises determining (222) a point of penetration in the form of an intersection point between the ray (500) and at least one of the plurality of planar, bounded, two-dimensional areas (600, 700, 800); and wherein the procedure (200) includes determining (224) whether the intersection point is located within a triangle formed by boundary points which defines the corresponding area (600, 700, 800) of the plurality of planar, bounded area regions (600, 700, 800).