Dear Joe, Installing downlights is a system that has become very popular in the last few years. Thank you! How far the light penetrates in sufficient intensity depends on the wavelength(s) and the power density, and also various other more minor factors. Thanks, Jay. Hi Bob, Wow… I found those instructions a bit hard to follow. I am considering buying your product but want to know what I’m looking at in these dose tables. How many infrared light penetrate through all that fabric and plastic ? Some research indicates that light therapy is perhaps useful as a means to prevent scar tissue at the time of injury, rather than actually eliminate well established scars years after the injury. I need to know if tan center red light bed with 330 mn. Thank you! Before starting to calculate the number of downlights and the distance between them, you should keep in mind the parameters that determine whether your room is illuminated properly or not. I think red only light is the best long term option for acne treatment. I want to use this for retina therapy and want the correct formula. Is hanging the light preferred to having on a vanity with light facing area? What am I missing? Hi I would like to know which led you would recommend for thyroids Found inside – Page 1905A 22 diameter globe of opal glass encloses a lamp of uniform luminous intensity 120 C.P. Thirty per cent of light emitted by ... Determine the average illumination of a room measuring 9.15 m by 12.2 m illuminated by a dozen 150 W lamps. Due to the COB LED and single large lens, the lights are already converged/mixed before they even leave the lens. With a solar power meter and a ruler, you can measure your light power density by distance. You are going wrong because you are just calculating from left to right, ignoring the brackets, which is wrong. I got a head ache after 20 mins which was my first time and I had to double up on towels on my eyes I’m extremely sensitive to the light but I really want the benefits now I’m confused ! Indoor lights for Cannabis grow: LED vs Bulbs. Higher light intensity means less application time is required: 5mW/cm² applied for 200 seconds gives 1J/cm². Summary Joe, can you please direct me to a specific brand/brands at reasonable cost of a solar meter to check power denisity on various led/red light therapy devices? Hello, Neural Information Processing: 24th International ... - Page 884 Further away for skin treatment. (And have your indeed found it suffices for the purpose of measuring the light for determining potential bio-therapeutic effects? Light Intensity A 1 J/cm² dose can be applied to 5cm² of skin, while the same 1 J/cm² dose could be applied to 50cm² of skin. Hi Lyle, If your device is 200mW/cm2 @0cm and 20mW/cm2 @60cm then would 30cm = 110mW/cm2 or is it exponential so 30cm = ~50mW/cm2. How long do you think it would take for the skin or eyes to be hurt from heat damage at this distance? Cantalupi Lighting S.r.l. Extreme Nonlinear Optics: An Introduction - Page 7 Found inside – Page 4572.1 Method of Calculation The geometrical model used in the Lumen method for lighting in frontage [7] and [3] is given by ... (light intensity provided by a weather file), the position of the window and especially the depth of the room. Pretty technical. If you can get a reading that seems reasonable then go for it. It is simply a measure of how strong the light intensity is (or how many photons are in an area of space). 2nd International Conference for Innovation in Biomedical ... - Page 167 I do not make medical recommendations as to how to use it. Multi-light Connection with unified dimming is especially beneficial for large areas of indoor growing and commercial planting. Assuming that this is before the conversation point, is the irradiance for each of the four frequencies (620 nm, 670nm, 760nm and 830nm) roughly 50mW/cm2? Is my assumption correct? I am very confused , about which red lite handheld laser is best for me to use I have a tendlite now I don’t know if 600 or 1100 is best for me to use on my back and shoulders and which laser is rated best for deeper penetration. At the shop I was suggested to go for the 65 because of the light intensity : they say that a 77 would be uncomfortable from that distance (small room size) and cause eyes stress. This tends to be in the 10 – 200mW/cm² range. I was looking on the Infrared Light Device Mini and Infrared 830, I don’t know which would be better. In addition to measuring the light intensity, you should also measure the EMFs. I hope you can help me with these two questions: 1. is incorrect math wise. Many thanks in advance! Your website is absolutely fantastic!! For general light therapy as a proactive health / anti-stress tool, this might be useful: power density : 200mW/cm* (at 7.5cm). Generation and Utilization of Electrical Energy: - Page 267 Combination blue-infrared – ncbi.nlm.nih.gov/pubmed/19391058 All I can say is that in the studies on sensitive skin, a lower light intensity and shorter treatment time works best. These are not specific product instructions. Can I press the Mini 670 directly against “my boys” or would having some distance make the light spread a little better (the COB may likely be less of a concern)? The question doesn’t make sense. Latest news on Cantalupi Light Engineering: – Boat International rewards Elandess yacht, © All Rights Reserved. The power density by distance is mentioned on the product pages. I can mess up a recipe to make ice cubes. I hear it kind of just bypasses the surface/superficial layers of skin and mostly benefits the deeper tissues, muscles, organs and bones. The J/cm² model doesn’t take into account the total energy input into the body which is think is significant. for deeper treatment of my coccyx pain, maybe 3-5 minutes at 6 inches daily? What app are you using? Just purchased red light 670nm device *in the square red box and would love general info on duration, distance from device for anti aging benefit to face/neck. For new growers it can be easy to get lost with the different light fixtures. It should also have between 20 and 100 mW/cm2 power density output hitting your skin for wrinkles. Found inside – Page 815Window ADACENT floor space cially if the room has considerable depth . The use of method of determining the daylight illumination intensity prism glass for redirecting the natural light is a special at a given point on the shop floor ... Electrical Installation: Theory and Practice - Page 211 Very comprehensive yet informative breakdown. Red-only – ncbi.nlm.nih.gov/pubmed/17903156 830 Mini still goes up to and over 200mW/cm2 irradiance, so plenty of power output and penetration. Of course we now know that the long term risks from X-Ray treatment is not worth the short term benefits. Found inside – Page 219Given Desired light intensity 800 lux Room size 10m by 25 m 250m2 Lamps are 500W, or 10,600 lumens/lamp Coefficient ofutilization CU 0.6 Light loss factor LLF 0.8 Approach Equation (3.15) can be used to determine area/lamp, ... What would you recommend for Hyperacusis/Tinnitus/Ear and trigeminal nerve pain? do you have a suggestion for raising testosterone levels? Thanks. Considering buying one but would like know more about how and why they work first. …david…. so now to plug it into the formula. It purports to emitting from between 2-25um, so 2000-25000nm. The product pages only show the distances that give 20 mW/cm² and 200 mW/cm², and I don’t have a light meter. Because you have control over the growing conditions, you might be able to provide almost perfect conditions for your plants to grow in and get overall better results but can also have bad consequences if not used properly... so how does VPD influence cannabis plants? Increasing or decreasing the humidity is a way to change the vpd in your grow room. I would consider 20mW/cm2 as the real minimum you need for light therapy. Which? Will you have a chart for the Mini Devices? I’d like to minimize time spent with a device between my legs, but would like to save a little cash if the Mini is all I’ll need (overkill for higher power devices?). You have to measure the output because different LEDs have different energy efficiencies, different lenses have different light transmission rates, different LED drivers have different energy efficiencies, etc. Dose in J/cm² (Joules per centimeter squared). Once you have established the number of downlights, the next thing you need to do is determine the right distance between the light fixtures, and between them and the wall. In particular, you will definitely need to plan a direct light that creates a sharp light beam on the worktop, whether you have suspended cabinets (in this case you can plan an LED strip underneath them) or a kitchen island (therefore the worktop will be entirely lit by the downlights in the ceiling). So would the dosage for muscles (or any other internal area) be compatible with the dosage for skin health? Which of your Devices would you recommend to reach the cochlea / inner ear? If you used the light from the exact distance that gives 100mW/cm2 light intensity, then anywhere from 10 seconds to several minutes is considered reasonable. There is no reason to think it (near infrared wavelengths in the 700-850nm range) harms eyes in any way. The Laboratory Rat - Page 315 the Intensity of Light Change with Distance Yes of course. The light harvesting and separation of charge carriers are two decisive factors in the photocatalytic process. In this case, since ceiling height is lower, you need a greater distance between the light fixtures, and you must also check the right number of downlights to install and their power. I would only need to use it for 5 seconds to be at 6j/cm squared? Decrease VPD: Running a dehumidifier increases the VPD because the amount of water vapor in the air has increased. Near infrared does penetrate deeper than red, which is why it is favoured for deeper tissue like muscles and joints. Borsa et al. Thank you. Please let us know what happened when you used LED lights for parkinson. Therefore you will need to be careful not to create, with the false ceiling, a room that is too stifling. The full formula, taking into account standard units is therefore: Now that you can calculate what dose you are getting, you need to know what dose is actually effective. At 10 – 30 cm away. If I keep it 25 cm from my face for 15 mins, would that be enough for skin therapy (just youthfullness, no specific problems other that wanting a firmer skin and prevention and improving small spots of hyperpigmentation? Thank you! I remember seeing studies about near infrared helping hair growth even more so than red did. It’s a powerful tool that should be adjusted for every stage of plant growth. Thanks Joe. In short, yes, they do. Found inside – Page 884Without considering any light reflection in the room, and simply treat the sunlight from the window as a point source light, we are able to calculate the illumination intensity at 100 randomly chosen points. In the real scenario, ... On the other hand, as the VPD increases, there are more forces acting on your whole plant (from the roots to the leaves) so your plant will experience more stress. I had the same idea so I started doing research which eventually brought me here. Once you have the readings of your device, you can determine the ‘light therapy range’ or the distance from which it needs to be applied to give an appropriate power density. I’m thinking about purchasing the Red light device for treating rosacea. Can you put in the testicular doses for each of the devices you sell into the table? You aren’t going to need the same amount of light in every room, but rather you are going to calculate the number of downlights and the distance between them depending on the needs and size of the rooms. Help? They don’t seem to be studied at all by researchers. In studies on hair health I’ve seen 1.5J/cm² all the way up to 70J/cm² in studies. The heating of the skin cells from sunlight can lead to photoaging over time. Found inside – Page 267Define the following terms: (i) Luminous flux. exeRCISe PRobLeMS (ii) Luminous intensity. (iii) Illumination. What do you understand by polar curves? explain Rousseau's construction for calculating MSCP of a lamp. (1) a room of 15 × 20 ... Vapor pressure deficit refers to the amount of water in the form of vapor in the air. I don’t recall anyone ever mentioning that they used the Combo Mini specifically for that. Your thoughts would be much appreciated. There is a lot of confusion about this topic out there. Increase VPD: Increasing the intensity either by lowering the lights or adding more lights results in an increase of the leaf temperature, thus increasing VPD. Hey Joe! So what that means is you need to adjust the distance you use a device depending on if you want deeper penetration or not. I have a question: In case I want to buy a device to use for skin and deep use (wrinkles and thyroid issues) I can orient myself on a 850nm only and adjust the time and distance according with the purpose or it’s better to have a Combo and use different wave lenght for skin and for deep tissues? Amazon.com : Wicked Lights W403IC Night Hunting Kit with ... Can any of the Combo lights be switched for red or IR only? To do that, you need to know over what area that lumens measurement is. But no worries, it’ll be a piece of cake! In general, in order to properly illuminate passageways such as the entryway and the hallway, 7 watts per square metre are sufficient, whereas for the living rooms and the bedrooms you are going to need up to 30 watts per square metre for a nice, bright result. Yes. But this can be avoided by using lights properly. Then in the next couple paragraphs: The graphic displays power densities as measured with a solar power meter. so my most recent question was wrong proving how bad I am at numbers. https://redlightman.com/blog/light-therapy-improves-arthritis-dramatically/ – here is a study review on the topic. Six months after you’ve stopped using Botox it is as though you never did. For general use and maintenance, between 1 and 60J/cm. or It is 67J per session of 25 minutes? Found inside... larger is the Sun's gravitational pull on Jupiter than the Sun's gravitational pull on the Earth? 4 a) A spherical light bulb is fitted in a darkened room. The light intensity at a distance 1 m away from it is 0.2W m−2. Calculate ... Higher doses are required to stimulate deeper tissue than for the skin. For treatment times, if I did 100J/cm2 on the back, 60J on the head, 38J on the thyroid, and 50J on the chest, etc in one day, would this add up to an overdose (through blood) or because different areas where used it’d be okay? Hi Joe, Hi Louise, The ones being sold do t tell you much part from there red light range of 660 to 800 etc. Tali. - Via Fosso Legnami 217 Piano di Mommio Massarosa (LU) | C.F./P.IVA 01793930460 | PEC: cantalupilighting@pecsicura.it, LED lighting company: Cantalupi Light Engineering, over 60 year of excellence. I was considering purchasing a facial device that is 640nm, 32W, and positions roughly 10cm off the face, but I don’t think I have enough info for these calculations. At standard room light levels (500 lux and below), the two light meters were within 40 or 50 lux of each other. The problem is that most traditional (non-LED) type bulbs are very inefficient electrically, so the stated watt consumption does not provide a good comparison. The National Engineer - Volumes 19-20 - Page 380 So if I want to improve my facial collagen how strong of a bulb do I need? This is what is meant by the inverse square law . For our purposes and for new exercisers, training target zones can be thought of as a traffic light where the green, yellow, and red lights correspond to the intensity of exercise. Hi Haig, Even if ‘more red’ wavelengths were better for healing (which they aren’t), they simply don’t penetrate as deep as the near infrared. Electrical Estimating: for Industrial Lighting Installations - Page 27 With LEDs it is not relevant. Not enough won’t do a thing and TOO much wont do a thing. Suggested daily 15 min sessions will give me all available health benefits..very cheap but need benefits. You need at least about 20mW/cm2 of light intensity for the minimum effects in the skin. Found inside – Page 488... (ii) a NAND gate. b) Design a logic gate system that will switch an LED on when the light intensity in a room falls ... Sketch the circuit diagram now and calculate the peak value of the output voltage for the same a.c. voltage as ... That seems overkill for checking a couple of lights. Found inside – Page 187This allows for a reduced light output from the fittings due to ageing and formation of dust on the luminaires. 7. Calculate the total light input to the room necessary, lumens, to give the illumination level, ... I really need this article for my thesis as my reference. does one start over the process? All of these light therapy wavelengths work on a very similar mechanism in our cells, so the overall light beam is just one combined light therapy source. This means relative light intensity at any given point gets weaker as distance from source increases. Please see this article: Dose is simply telling you how long that power density was applied for. Light It’s nice to see someone package it for us so nicely. I would not make a specific medical recommendation on something like that. What is your opinion on the LightStim for wrinkles? It says the total energy irradiated on muscle should be 83.4 J. Found inside – Page 100The basic principal of the rendering process for any shaded material is to calculate the intensity of the light ... For example, a point light source inside a room has its ambient component created from diffuse reflection of the ... Found inside – Page 219Problems on illumination room to more nearly curve over the room under alt conditions? make the level of ... (b) 3.46 lux] 3 Calculate the illuminance on a horizontal surface due to a single lamp with uniform luminous intensity of 2500 ... To use a light for therapy, you need to measure the power density as described in this article. Is this correct? The table above is referring to the Combo Light Device (not the Combo Bodylight). A big ask for just one device, I know. Guessing under joint pain, but it’s a little different as my husbands thumbs are all swollen and puffy too. If I use them further away I will go up to 20 mins or more exposure, without really thinking about calculating a dose. Indoor vs Outdoor: These Are The Differences. Perhaps you can buy one that can be returned for a refund. I’m confused how to apply the +20% to the equation. Strong sources of longer infrared like heat lamps and sunlight might contribute to photoaging in large doses (via denaturing cellular proteins). Lighting design items like these are always very fashionable. This is very helpful; thank you. The problem is that lux and mW/cm^2 are not simply different units, rather they are units for different measurements. Am I mistaken to believe Red Man Lights are useful for anti-aging? I don’t know if dose in J/cm² is the best way to determine effect and the effective dose does of course vary by individual depending on skin colour and other factors anyway. There is a metaly smell when the lamp heats up. Absorption coefficient k = A/d, where A is absorbance (A= log(Io/I)), Io is intensity of the light beam before the sample, I is intensity of the beam, passed through the sample. 100mw/cm2 is the light intensity (at a specific distance) and would change depending on the distance. I want to buy the Combo but don’t know if you ship to Chile and if you send with DHL (or any other ). Maybe a “side by side” of all the Red Devices? Thanks. Did you ever post power density/distance charts for the Mini Devices? Here is an add on your answer, – if you have one of the newer computer screens or like your phone, thay have what you call an automatic Red-eye or Blue Light cancellation app on it,… if not, there is a few good ones out there that are for free for download.
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