Frequently Asked Questions

The average ROI for our products is 2-3 years, though many customers have experienced an ROI of less than 1 year. Your ROI will depend on a number of factors, including the type of fixture being upgraded and light bulb being replaced, your electricity rate, weekly usage, and whether you select our solar-hybrid (higher energy savings) or LED-only retrofit solution.

Depending on the type and age of the fixture being upgraded, our customers have experienced up to an 85% reduction in energy usage when compared to their old bulbs. Customers who have purchased our LED-only retrofit applications are experiencing approximately 60-75% reduction in energy consumption, while integrated solar power components increase the amount of energy savings.

Noribachi provides installation instructions with all of our products suitable for any licensed electrician, but does not offer installation services at this time. In many cases, Noribachi can recommend companies in your area that have installed our products in the past.

Yes. Please refer to our customer case studies.

Depending on the specific application, requirements, and your geographic location, delivery time for standard product will vary from 4-6 weeks. Special orders can take more time. Rush lead times range 1-2 weeks.

Yes, many public sector entities are receiving stimulus funding which are available for energy conservation projects. In addition, the Federal government and many states offer solar-related and electricity conservation tax credits. Finally, many local power utilities offer their customers rebates for swapping out energy inefficient lighting fixtures for energy efficient solutions and usage rebates for significant electrical conservation. Ask your Noribachi dealer or sales representative for more details.

Our products perform comparable to conventional light fixtures. Additionally, Noribachi’s solar panels include hail resistant features for areas with heavy hail patterns; our solar panels are rated for 1” hail at 180 MPH winds.

Yes! We provide a 3 year limited warranty on our low lumen output LEDs and legacy bulbs, a 5 year limited warranty for high lumen output LEDs and fixtures, and an optional 10 year limited warranty for our high output LEDs

You can find Noribachi’s return policy

There are many excellent websites that contain extensive information on how LEDs work and their benefits in commercial and industrial lighting applications. One of the best sources of information is the US Department of Energy:

Here are just a few of the primary benefits:

  • Lower energy consumption
  • Longer service life; LED bulbs can last up to 100,000 hours
  • Durability; LED bulbs are resistant to thermal, vibrating shocks and turn on instantly from -40°C to 185°C, making them ideal for applications subject to frequent on-off cycling
  • Flexibility; LEDs allow for directional distribution of light
  • No infrared or ultraviolet radiation – UV light attracts bugs
  • No toxic chemicals; LEDs contain no mercury and do not require ballasts, which are often manufactured with PCBs
  • Very low heat generation; LEDs are can reduce climate control costs and are especially suited for cold storage facilities
  • No frequency interference; no ballast to interfere with radio and television signals
  • Wide range of color; LEDs can be manufactured to produce all colors of the spectrum without filters as well as white light in a variety of color temperatures

45-85°C (113-185°F). This compares to average parking lot lights which operate at temperatures up to 750°F

Phosphorus controls the color of LEDs. The more phosphorous on the LED, the “warmer” the LED will look, but the less light it will give off. The phosphorus coating absorbs some photons resulting in less light illumination. The less phosphorus deposited on the LED, the “cooler” the LED will look, but the brighter it will appear.

Depending on the specific application, requirements, and your geographic location, delivery time for standard product will vary from 4-6 weeks. Special orders can take more time. Rush lead times range 1-2 weeks.

Below are a few comparisons between LED and induction or electrodeless lighting.

  • LED has the ability to distribute light in a focused manner allowing for use in a larger variety of applications. LED lighting works great in high mounting applications, as well as task lighting or accent lighting, while induction lighting cannot be focused or throw as far due to it’s 360° light pattern.
  • LEDs have very low heat generation where induction lights produce high amounts of electrical radiation causing serious heat issues. The ballast and driver for induction lighting must be isolated from the lamp to control heat.
  • LEDs can easily be retrofitted in many interior or exterior lighting applications where retrofitting is difficult for induction lighting because the bulb is large in size and must be shielded from the driver.
  • LEDs are environmentally sensitive and contain no mercury or other hazardous materials.
  • Induction lights do not dim properly where LEDs have great dimming characteristics.
  • LEDs can be used in cold environments; induction lighting does not function well in colder environments.

Noribachi only uses high quality LEDs that have a high efficacy (lumens/watt), eliminating the need to overdrive the LEDs, minimizing heat. Noribachi’s lighting solutions are designed with heat sink mounting and engineered to include an integrated fan to dissipate heat in high light output situations

Color Rendition Index (CRI) is a quantitative measurement of a light source’s ability to match natural light, or color accuracy. Based on sunlight having a CRI of 100, LED has a CRI of 65-95 depending on the desired color temperature. For comparison:

  • Fluorescent lamps have a CRI between 60-80
  • Mercury vapor lamps have a CRI of 45
  • High pressure sodium lamps have a CRI of 22
  • Low pressure sodium lamps have a CRI of 10
  • Metal halide lamps have a CRI of 65

Efficacy is the amount of light produced compared with the amount of power required to produce it. This is measured in lumens per watt. Noribachi’s LEDs generally have an efficacy between 110-140 lumens/watt. For comparison with other directional light sources:

  • Mercury Vapor = 50 lumens/watt
  • Metal Halide = 80 lumens/watt
  • Fluorescent = 60 lumens/watt
  • Halogen = 10 lumens/watt

Yes. We have independent testing, inspections and certifications based on UL Standards performed and enforced by Intertek ETL Smeko Division. Our components (CLUs & ULC) are ETL Recognized to UL Standards. Our light bulbs are ETL Classified to UL Standards. Our fixtures are ETL Listed to UL Standards.

No, just like changing the light bulb normally, changing your current light bulb to an efficient Noribachi LED light bulb won’t affect the UL certification. Putting our Noribachi ETL listed bulb into your UL certified fixture is safe and saves energy.

ETL is quicker, more economical, and they undergo performance tests on the light bulbs. UL only provides results on a pass/fail basis, where ETL, if needed, will tell the customer where they need to improve. This was helpful when we sent our first light bulb to them.

Visible Light Solar Technologies was created as an internal technology project company within the venture accelerator, Noribachi Group, LLC, in early 2008. Farzad and Rhonda Dibachi, the co-CEOs of Noribachi, oversaw an engineering team who developed the Universal Lighting Controller (ULC), the power management software and hardware infrastructure which are critical components of Noribachi’s products. In addition, the Noribachi engineering team developed a series of application specific solar devices to provide photovoltaic lighting options. In 2011, Visible Light Solar Technologies and other subsidiaries of Noribachi Group were consolidated into Noribachi Corporation.

Noribachi is backed by a number of private investors.

Delivered lumens refers to the total light output from the fixture, whereas nominal lumens is a measure of the total light output of the light engine. Our products range from 896 nominal lumens, on the low-end, to 79,665 nominal lumens at on the high-end. As expected, the delivered lumens of these light engines will greatly vary based on the size and geometry of the ultimate fixture. For fixtures that Noribachi has on its product offering, the typical delivered lumens count is 85% of the light engine nominal lumens.

An LED power supply has a rated efficiency. This efficiency is dependent on many parameters, including ambient temperature, case temperature and the number of LEDs in the LED “string” amongst others. Real input power refers to the power that is consumed by the LED power supply as opposed to the power that is delivered by the power supply. Noribachi uses only power supplies that are over 85% efficient. In fact, most of the power supplies used by Noribachi are over 90% efficient. Our specification sheets for out light engines call out the real input power to the light engine.

Noribachi has LM 79 data for all of the light engines that it offers. All of these reports are independently verified at the labs of independent testing company Intertek. We furnish this data to all of our customers. Noribachi only uses LEDs from the following 4 manufacturers: Cree, Osram, Nichia, and Philips. All of the LEDs that we use from these companies have extensive LM 80 data that is verified independently. We furnish these reports to our customer on a select basis.

Given that an LED light engine is in fact a group of many individual lights, it is rather difficult to get a consistent color output. The top four manufacturers of LEDs use different strategies to mitigate this color discrepancy. This problem gets exasperated as the LEDs age and experience more color changes. To make the color more consistent, Noribachi tries to use the exact same bin for all the lights in a single project. Noribachi will finer tune the binning that the LED manufacturer has performed. Because we have access to many different LEDs with different characteristics, we can fine-tune the final color output. In some instances, we have guaranteed a color matching of less than 25 degrees Kelvin.

The typical high-end LED has a maximum functioning temperature of 150º C with a typical operating temperature of 125º C. These temperatures are drastically lower for run-of-the-mill LEDs. At Noribachi, we manufacture all of our lights with a design parameter of 95º C maximum operating temperature. When we design a light engine for a new light fixture, we put that light engine/fixture combination through a rigorous testing process to assure consistency with our design parameters. Additionally in some cases, we simulate a heightened ambient temperature by making use of an environmental chamber. As well as the design process, Noribachi puts all of its lights through a 24-hour burn-in test with a simulated on/off repetition process.

With a calculated life of an LED exceeding 100,000 hours, it is rather irrelevant to talk about a LED’s lifecycle. It will last “forever.” Every shift from analog to digital technology has had two consequences. Firstly, cheaper price and with it, more usage, and secondly much more rapid change. The shift from analog to digital in lighting will have the exact same consequences. Lighting will get much cheaper–especially on the high-end wattage and we will use much more of it. Every building will have wash lights, car dealerships will be brighter and municipalities will be more lit. The second consequence is that lighting that is bought today will be outdated in 3-5 years long before the life of the LED is over. It is the manufacturer’s duty to create a system that allows updates to the technology without needing to end the life of the product. Noribachi has, from the first day, had this tenet in its product design requirements. That is why we have the element of a Common Lighting Unit (CLU) that can be replaced and updated. We also have made everything in our lights modular so that one element can be updated and replaced without the need to completely replace the light. We also have instituted a program whereby we update our lights for a substantial discount after 3 years of service. This update will only require that the CLUs be updated and the power supply be reviewed.

The light pattern from a light source is characterized as “light distribution”. Needless to say that there are infinite types of light distributions that can be made using a light source and reflective surfaces.

In municipal, commercial and industrial settings, light distributions have been generalized to 5 somewhat distinct patterns. These are referred to as Type I, II, II, IV and Type IV. These distribution types have been a necessary way to distinguish lighting applications since there are complications associated with forcing photons from an omnidirectional light source into a certain light pattern on a two-dimensional surface.

For example, it is a rather difficult feat to force a spherical light bulb to shine in an elongated, narrow ellipse. This has been traditionally been accomplished with rather convoluted reflective surfaces inside the light fixture. These reflective surfaces, of course have the added disadvantage of reducing the overall light output.

As LED lighting becomes more mainstream, there is a question of how to describe and create the traditional lighting types with the new technology.

The two most distinguishing physical aspects of LED are the fact that they are, in fact, directional and second that they are many individual light sources that, when combined, become the over all light bulb.

At Noribachi, we have decided to use the above two features of LEDs to satisfy our customer’s needs to create a special, or different light pattern. We accomplish this by physically pointing in a certain direction all or a portion of the individual LEDs that collectively comprise a light bulb. The major advantage of this is that, we are able to create not only the 5 traditional light types, but in fact any type of distribution.

To specifically satisfy the traditional light types the following is what we do.
Type I:The LEDs are divided into two groups with each being on a plane pointing away from the direction of the surface but in a parallel fashion to the light source itself.
Type II: The LEDs are divided into two groups with each being on a plane pointing away but with a smaller angle, from the direction of the surface but in a parallel fashion to the light source itself.
Type III: All LEDs are put on the same plane. The plane is pointing at a slight obtuse angle in the direction of the surface.
Type IV: All LEDs are put on the same plane. The plane is pointing at a higher obtuse angle in the direction of the surface.
Type V: All LEDs are put on the same plane pointing perpendicularly in the direction of the surface.