When measuring for a color on a chromaticity diagram, you measure each photon’s wavelengths; that doesn’t change no matter how far or close you are from the light source.

If you are measuring at a very close distance and the light is a very high intensity light, you may get an “Over Exposure” error.  And you will need to move far enough away until the error dissappears.

Figure 10 – The left screen is from very near the light,  the right screen at a further distance.  Notice how the XYZ values change, but distance is still not important, because ratios are the same.

Everything thing you need to know about Flicker, an insidious, potentially serious lighting artifact impacting visual safety for public places like hospitals, offices, libraries, and more...

Tokyo Dome City is a vast leisure complex encompassing the famous Tokyo Dome baseball stadium. This extensive entertainment hub combines an amusement park, restaurants, shops, hotels, and more. Admission to the amusement park is free, meaning visitors can easily hop on rides by just paying the ride fee. Additionally, LaQua just inside is where you’ll find amenities, eateries, and a natural hot spring spa. Every winter, Tokyo Dome City comes alive with an extra special illumination. The theme changes every year, ringing in a dramatic display and one-of-a-kind moment that is truly once in a lifetime.

Mar 24, 2022 — He showed that prisms not only split light into the familiar rainbow colors, but can also recombine them. The glass of a prism, and the angles ...

During the Christmas season, illumination events are held at a number of iconic Tokyo landmarks: Tokyo Tower and Tokyo Skytree. At Tokyo Tower, the event called Tokyo Tower Winter Fantasy offers visitors a chance to enjoy all the romantic vibes of ground-level illuminations and the tower lit-up in the sky. Meanwhile over at Tokyo Skytree, visitors can appreciate not just illuminations, but also projection mapping and a plethora of light installations, including Christmas trees. Both landmarks also host special Christmas events. So if you're spending Christmas in Tokyo, consider visiting these emblematic sites.

MK350S Premium is a full-featured Handheld Spectrometer used by lighting professionals with wide ranging projects and lighting challenges.

Located in the heart of Tokyo's Minato ward, Akasaka, Tokyo Midtown is a vast urban complex featuring expansive green spaces and six distinct buildings. This shopping multiplex is home to various shops, restaurants, offices, hotels, green areas, and museums. Around 130 establishments, including high-quality specialty shops and gourmet restaurants that offer both domestic and international cuisines, line the area. Every year, Tokyo Midtown hosts MIDTOWN CHRISTMAS. Once here you’ll find the "Promenade of Light", lined with trees radiating a refined golden glow, a Christmas tree made of discarded pruned branches, and art pieces that invoke the Christmas spirit even during daylight and within the facility.

With the uSpectrum PC Software, you can connect your UPRtek device by USB cable to a PC or laptop, for full screen views and keyboard operations.

The UV100 Spectral UV meter meaures ultraviolet light for modern-day applictions. Industrial curing, medical sterilization and UV bulb production using UV light require more versatile, visual and accurate spectral measurement devices to make sure UV light is used efficiently and optimally for light-critical instrumentation and products.

UPRtek (est. 2010) is a manufacturer of portable, high-precision light measurement instruments; Handheld Spectrometers, PAR meters, Spectroradiometers, Light Calibration Solutions.

The other item to consider is that most measurement devices will always have some very small margin for error – you can find these in the specifications for your UPRtek device, downloadable from our website support center.

However, the farther the spectrometer is from your source light, the more opportunity ambient light from surrounding windows or even the light reflecting from nearby surfaces, such as walls or ceilings, can affect the precision of the measurement.

The CV600 spectral color meter is for cinema and stage lighting professionals, providing tools to help assess/adjust color fidelity, improve color rendering, purchase better lights, recall lighting setup from previous performances and make better overall choices about lighting with the numbers.

The winter months between December and February are chilling in Japan, and in some regions, the harsh and frigid days can even be hard to get by. That being said, there are still plenty of people across Japan who can’t get enough of this cold time of year.

The MK350N Premium is our popular mid-range spectrometer, made for professionals who want top spectrometer performance without the need for specialized niche features (e.g. Manufacturing , PAR meter, Lighting Design).

Our FAQ and repository of articles have a purpose of supplying a community of lighting specialists with a central location for a wide scope of lighting related topics.

Liquid light shows (or psychedelic light shows) are a form of light art that surfaced in the early 1960s as accompaniment to electronic music and ...

Whether you're spending time with your children, enjoying a date with your partner, or cherishing a moment of solitude, there's a delightful oasis in Tokyo's Kichijoji that offers the perfect escape. Nestled within Inokashira Onshi Park, the charming Inokashira Park Zoo offers a brief escape to unwind in nature, away from the hustle and bustle of the city.

We stated that the distance between your light meter and the light source is essential if you are measuring the amount of light but not important if you are measuring the color of light.

Polarization: Oscillating patterns of light aren't strictly quantum but can help with quantum information.

The Shibuya Blue Cave Illumination, a romantic blue light illumination extending about 800 meters from Shibuya's Park Street to the Zelkova trees of Yoyogi Park, creates a magical atmosphere for the Christmas season.

UPRtek offers portable LED light measuring instruments including Spectrometers,   Spectroradiometers, and Light Calibration Solutions.

Illumination displays have become an iconic winter phenomenon in Japan. As the Christmas season approaches, these dazzling light shows can be found across the nation. With all the cozy ambiance of romance, they’ve even become a winter dating staple. Tokyo, with its urban charm, hosts a number of different illuminations, all waiting for you to catch during your travels across the city during the colder months. To get the most out of this quintessential Tokyo winter experience, here's a roundup of the capital's most popular illumination destinations and areas that light up beautifully during the season.

The uFlicker PC Software allows you to cable-connect your PC to a UPRtek device for PC controlled flicker operations. This allows you to have a workstation with operative controls, and full screen view with flicker data and graphs all in one place.

The MK550T Handheld Spectroradiometer is used by Display Panel manufacturers as a cost-effective, lab-level device that measures panel performance.

What is illumination in the Bible

The PG200N is a Spectral PAR meter used to measure the quantity and quality of light for a new generation of indoor farmers who use artificial lighting as a substitute or complement to sunlight.

While there’s plenty to love at each separate illumination, nothing beats seeing the entire city all lit up at once. Here are three areas in Tokyo where city lights are the perfect glitter behind the illuminations.

Shinjuku is a huge town with its large skyscrapers, commercial facilities, and huge entertainment district. Along with the latest trends, you can enjoy visiting the traditional shrines and natural attractions. What if you want to play? Want to eat? Want to explore? Want to learn? Here’s a list of 41 entertaining locations in Shinjuku from mainstream to less-known areas that are a must-visit when in Shinjuku.

uSpectrum Accessory/App/Software allows connectivity from our products to PC/laptops/mobile devices, giving you all the advantages of your existing digital world.

General illumination

Polarized light can be produced by transmission through polarizers or by reflection from the surface of transparent material such as glass or water. Fig. 4 ...

This guide introduces events held in and around Mt. Takao for those planning to visit this popular destination. From activities that let you fully immerse yourself in Takao’s natural beauty to those that highlight its historical and cultural significance as a sacred mountain and a center of Shugendo ascetic practices, there’s something for everyone.

While the Meguro River is renowned for its cherry blossoms, many travelers don’t know the trees get a second wind when they “bloom” again in winter! Every year from November to February, trees along the approximately 2.2km riverside are all alight with 350,000 cherry blossom-colored LEDs, creating a spectacle resembling fully bloomed cherry blossoms in winter. The illumination covers the area around JR Osaki Station and Gotanda Station. Swing by for all the buzz of Meguro River in winter, a beauty unlike anything you know from the spring.

Located in the area spanning the cities of Inagi in Tokyo and Kawasaki in Kanagawa, Yomiuri Land is Tokyo’s premier, historic amusement park set just about 30 minutes by train from Shinjuku. The "Jewellumination" event at Yomiuri Land is among the most popular illumination events in Tokyo, heralded as the world's first illumination event to utilize gemstone color-inspired LED lights. During the event, the park sparkles and transforms into a dream-like atmosphere. One perk of picking this spot is that you can enjoy a view out over the lights from the rides. Step into the Ferris wheel, to see not only the park in all its dazzling glory, but also out passed illuminated landmarks like Tokyo Tower and Tokyo Skytree in the distance.

80 LED Compact Ring Light with Built-in Dimmer for Stereo Microscopes. 5.0 star rating. 1 Review. Regular price $49.99. Regular price $59.99. Sale price $49.99.

The Marunouchi Illumination continues to stand as a winter tradition in the Marunouchi area for over 20 years now. The main draw at this event is the Marunouchi Naka-dori main street, spanning about 1.2 km with a lineup of popular brand shops. From the Tokyo Kotsu Kaikan in front of Yurakucho station to Otemachi Naka-dori, around 340 trees throughout the Marunouchi area are decked out with as much as 1.2 million LED bulbs, all of which are set aglow at the same time. During the event, not only the street but the entire city glows in a shimmering champagne gold, creating a truly magical atmosphere.

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The MD100N is a spectroradiometer that is cost-effective, with fast measurement times, and a focus on Laboratory-level precision. It can be used by manufacturers, OEM/ODM companies of any size and allows much more flexibility and versatility in Quality Control.

Tokyo Station stands as the city's primary gateway. The station complex houses an array of shopping facilities, ensuring you can shop all day. Additionally, it's a foodie haven, offering local specialties not just from Tokyo but from all over Japan. Every winter, the "Tokyo Michi Terrace" illumination event comes back around, transforming the vicinity of Tokyo Station with gleaming lights. Trees in the surrounding areas are adorned with LEDs in various colors, creating a dreamlike atmosphere. The nostalgic ambiance of Tokyo Station, enveloped in these mystical lights, makes for a delightful experience even if just for a stroll.

Illumination of light formula

This is because light disperses.  It means the farther the light is from a surface, the more light disperses and the less concentrated it becomes.  This dispersal of light follows a predictable pattern, as shown in Figure 5.

Light illumination level

Centered around Omotesando Station, within roughly a 1km radius, lies Omotesando - an upscale district boasting both emerging and high-end brands. Various illumination events grace this relatively compact area, especially as the Christmas season approaches, making the entire district sparkle. A standout feature is approximately 150 Zelkova trees, symbolic of Omotesando, bathed in a soft golden light. The aforementioned OMOHARA Christmas illumination is also one of the events held in this area.

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Jun 18, 2024 — Semiconductor Lasers: Also known as diode lasers, these use semiconductor materials to produce light. They are compact, energy-efficient, and ...

XYZ is used to measure Colors in a light, but even though you measure a light from distances and the XYZ values change, the ratio of the XYZ values stay the same, indicating it’s the same light.

Namahage is the heralded name behind the centuries-old ritual legend hailing from the Oga Peninsula region of Akita Prefecture. Normally, it's rare to see the Oga Namahage outside of their hometown, but with the ending year comes a Tokyo special complete with taiko drums! See one of Japan’s age-old legends up close. Embrace the spirit of Japanese tradition and ring in a better year ahead.

If you are measuring light color for precision applications in scientific, research, or industrial testing, you should measure in a confined room with light-absorptive walls (i.e. blackbody surfaces).

When considering a spectrum, there is an element of intensity – the left side of the chart refers to intensity – however,  there are no actual values on the left side of the chart.  This is because when you look at a spectrum, most times, you are eye-balling (visualizing) the shape of the spectrum and comparing the relative intensities of colors, not the absolute intensity values.  Thus, the distance from meter to light is still not essential – the shape of the spectrum will not change with distance.

Tokyo Midtown Hibiya is the shopping hub that awaits in Hibiya, the heart of Tokyo. Inside you’ll find some 60 shops and restaurants, as well as a movie theater, sky garden and more for everything you’ll need to stay entertained with an ultra-luxe vibe and flair. As Christmas approaches, the Hibiya Magic Time Illumination event transforms this chic destination into a dreamy and romantic realm. Streets and plazas around Tokyo Midtown Hibiya come alive with illuminations and the spirit of Christmas. The romantic setting, with illuminations and Christmas trees shimmering against a backdrop of towering skyscrapers, is a perfect spot for a winter date.

Winter is the season when Japan goes all a-glow with different illuminations. From grand displays that dazzle and amaze to the romantic ambience of more intimate illuminations, there are even some illuminations that celebrate unique customs of different regions so you can enjoy all the wonder dreamed up by expert design. Below is a breakdown of famous illuminations across the country, starting off with the three major illuminations of Japan. Swing by these spell-bending, magical spaces and make new winter memories you won’t soon forget.

From winter to spring, Yomiuriland hosts its annual Jewellumination, an event that transforms the entire amusement park into a glittering dreamlike space. As the largest illumination event in the Kanto region, Jewellumination offers a unique experience where you can enjoy stunning illuminations while riding attractions.

Jun 15, 2023 — We provided a detailed step-by-step guide to metering a photo strobe or continuous light, ensuring you have a clear path towards improving your photography.

The MK350D Compact spectrometer is for users who just need a simple product with basic measurements essentials. And yet, the measurement needs to be precise and up to the scrutiny of global standards.

Situated at the heart of the Omotesando-Harajuku area is the shopping megaplex, " Tokyu Plaza Omotesando Harajuku", home to a smattering of popular brands from Japan and around the world. The shopping floors span from the basement level up to the 5th floor, featuring an array of distinctive shops, ranging from fashion, accessories, to various knick-knacks. The cosmetic shops in particular have been the talk of the town for their comprehensive product line-up. On the 6th floor you’ll find a beautiful garden sanctuary, Omohara no Mori, providing a serene space amidst lush greenery. During the Christmas season, an illumination event takes place in Omohara no Mori, where the various plants and trees are gently illuminated. The warm, comforting ambiance of the "OMOHARA Christmas Illumination" is its hallmark feature.

With this guide you’ve got the best and brightest tips to catching popular illuminations in Tokyo, spots with illuminated, gorgeous cityscapes and a few illuminations at iconic landmarks like Tokyo Tower and Tokyo Skytree. If all the best of Tokyo winter goodness and unforgettable illuminations, be sure to bookmark this handy breakdown as your guide.

Illumination lighting design

LED products are everywhere. They traverse the entire spectrum of manufacturing, academics, science, government and commerce. Here we explain the challenges and solutions to a wide range of LED applications, and how UPRtek products have become an important tool in our industry.

When you take CIE XYZ readings, the XYZ values change dramatically with distance.  You may be misled to think that distance is important, but it’s not.

Firewire is proud to offer you some of the industry's brightest LED headlights that feature high-intensity cob-style LED bulbs, each ...

Every year, Tokyo goes all alight with a line-up of different illuminations to see. Whether it's the glittering lights set against the city's skyscrapers, the view over lights from an evening ride or entire districts decked out with glittering glory, there are countless ways to take in all the magic. With such a broad repertoire to check out in Tokyo, we’ve handpicked some of the best and brightest, that always beam with the biggest numbers and rave reviews.

Types of illumination in slit lamp

The approximately 400m long "Keyakizaka" in Roppongi sparkles in blue and white with about 800,000 LEDs during the Keyakizaka Illumination. Throughout the event, the streets along this chic little area are all lit up with gorgeous colors and an air of romance. Tall buildings and the glittering zelkova trees line the street, and in the distance, the Tokyo Tower is visible, making for a perfect photo spot.

Many visitors to Mt. Takao wish to stay nearby before or after their hike. Fortunately, the area around Mt. Takao and its accessible surroundings are dotted with charming accommodations. Whether you're looking for a convenient place to rest after your descent or planning to enjoy a full exploration of the Mt. Takao area, these carefully selected accommodations are perfect for your stay. From highly accessible hotels to those offering unique experiences and stunning locations, there’s something for everyone.

Types of illumination PDF

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If you measure for color or CCT, the distance between the spectrometer and the light source is not really important. Whether you measure at 1 or 3 meters should make little difference – your CCT should remain consistent.

Make your next trip around Mt. Takao extra easy on the wallet with two train passes, the Mt. Takao Discount Ticket and Mt. Takao Onsen Ticket. Below is a quick and easy round-up of how to get to Mt. Takao from the Tokyo city center using the Mt. Takao Discount Ticket or Mt. Takao Onsen Ticket. We’ll make sure to throw in some savvy tips about what to do on and around Mt. Takao once you get there, including must-see destinations and recommended stays.

Just 41 minutes from Keio Shinjuku Station, Tama Zoological Park is easily accessible by train, with the main gate visible right as you exit Tama-Dobutsukoen Station. This popular destination offers the chance to encounter a wide range of animals and insects, from ants to elephants, making it a fun and convenient spot for all ages.

Our spectrometer users ask whether the distance between your meter and the light source should be considered when measuring your light. It depends on what you are measuring.  There are two situations you should consider.

Illumination lighting meaning

Adafruit Industries, Unique & fun DIY electronics and kits Fiber Optic Light Source - 1 Watt - White : ID 4168 - This is a pretty neat way to glow up.

Ebisu Garden Place is a shopping hub set in a green-filled area, home to restaurants, cafes, a department store with popular brand shops, a cinema, an art museum, and more. From casual cafes to top-tier establishments, a wide array of foodie delights are available to try. The buildings themselves, along with their walkups offer plenty of gorgeous, calm and serene vibes for shopping and strolling. In winter of each year, you can even find the illumination event Baccarat ETERNAL LIGHTS, featuring a Baccarat chandelier made of over 8,000 crystals and 250 lights. Wander around this luxe space for a time away in elegance, surrounded by crystals and lights. There’s even a Christmas tree put up to help you get into the spirit.

It states that the amount of light diminishes proportionately by distance, or more specifically, by the square of the distance.

Located in Tokyo's Minato ward, Odaiba is a vast man-made island developed in part of Tokyo Bay. Featuring indoor theme parks and expansive seaside parks, it's a perfect spot for families to indulge in active fun. With numerous large shopping complexes, you can easily spend an entire day shopping. One spot you won’t want to miss is over at DECKS Tokyo Beach, called “Odaiba Illumination 'YAKEI'," which offers mesmerizing views of the illuminations set against the stunning backdrop of Odaiba's cityscape. You also won’t want to miss catching a glimpse of the dazzling Daiba Memorial Tree standing around 20m tall and 10m wide. Another must-visit is the Seaside Terrace, a cozy, photo-worthy escape.

When you measure for LUX or PPFD (grow lights), you measure the amount or quantity of light hitting a surface area.  In these cases, the distance is essential.

UPRtek (est. 2010) is a manufacturer of portable, high-end spectral light measurement instruments – Spectrometers, Spectroradiometers, Light Calibration Solutions. UPRtek is headquartered in Taiwan with worldwide representation through our certified Global Resellers.

To understand why, you must look at light’s peculiar quality – Light is both particle and wave.  When you measure for LUX, you are measuring particles of light or photons – and these photons are dispersed from the light and become less concentrated as distance increases.

Located about an hour by train from Tokyo’s urban areas, Hachioji offers a unique blend of rich nature, historical castle ruins, and vibrant shopping districts that feel worlds away from central Tokyo. In this article, we’ll introduce popular sightseeing spots, as well as recommended restaurants and shopping areas in Hachioji. Use this guide to explore Hachioji alongside your visit to central Tokyo.

If you look at the R1-R15 for CRI, they also may appear as intensities of colors.  But these values are not intensities – they are differences in color reflection off objects from a test light compared to a percentage of reflection from sunlight.

Held on non-racing days at the Oi Racecourse in Shinagawa, the winter-only TOKYO MEGA ILLUMINATION is a definite must. The event is so popular that it’s ranked first for three consecutive years in Walker Plus's "Japan's Must-Visit Illumination Ranking" and also achieved the top spot in the "Japan's Glad-We-Visited Illumination Ranking". The main things to check at the TOKYO MEGA ILLUMINATION: ・Sprawling, wide open space you can only find at a racecourse filled up with grand illumiations ・Horse-themed events held daily This unique combination of "Illumination x Horse", capitalizing on the racecourse's features, offers a truly unparalleled experience. Don’t miss it!

Of all the many illumination spots in Tokyo, the Oi Racecourse, which presents Tokyo Mega Illumi, is the most popular, ranked 1st for two consecutive years (2022-2023 and 2023-2024) in the Walkerplus+ “Japan’s Most Satisfying Illuminations Ranking.” If you haven’t gone to see it yet, here is our guide on how to enjoy Tokyo Mega Illumi and recommended dating spots in the neighborhood.

UPRtek HQ, R&D and manufacturing are all based out of Taiwan, with Worldwide representation through our certified Global Resellers.