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Here are examples of using black lights in daily life and hobbies. Photographed by illuminating a glow-in-the-dark lure with "PW-UV343H-03L." Used for fishing. When charging glow-in-the-dark lures or glow-in-the-dark bands, it can be done more efficiently with black light than with visible light LEDs. This is because shorter wavelength light is needed to charge them, and visible light LEDs do not emit light in that wavelength range. Although there are now glow-in-the-dark paints that can be charged with visible light, many glow-in-the-dark materials still require ultraviolet light for charging. 【What is a Black Light】 - A general term for lights that emit light primarily in the ultraviolet range, which has wavelengths shorter than 400nm in the visible spectrum. - Fluorescent reactions that cannot be obtained with visible light, as well as various reactions depending on the object, can be observed. *For more details, please refer to the related links or feel free to contact us.

• Other lighting equipment

Here are some examples of using black lights in daily life and hobbies. The chair was photographed using "PW-UV943H-04." When dust is illuminated, it fluoresces white. Additionally, splashes of urine from dogs, cats, and humans also react to black light, making it useful for cleaning verification and other purposes. 【What is a Black Light】 ■ A general term for lights that emit wavelengths shorter than 400nm in the visible spectrum (ultraviolet light). ■ Fluorescent reactions that cannot be obtained with visible light, as well as various reactions depending on the object, can be observed. ■ Used widely for various purposes, from hobby applications like fluorescent verification and lure phosphorescence to counterfeit detection of banknotes and industrial ultraviolet flaw detection lamps. *For more details, please refer to the related links or feel free to contact us.

• Other lighting equipment

Here are examples of the use of black lights in authentication and anti-counterfeiting. Uranium glass was photographed using "UV-SVGNC365-01". In the case of uranium glass, it is possible to distinguish between ordinary green glass and uranium glass. While it is not uniform due to other components, fluorescent reactions are also used for the identification of gemstones, minerals, and more. 【What is a black light】 - A general term for lights that emit wavelengths shorter than 400nm in the visible spectrum (ultraviolet light). - Fluorescent reactions that cannot be obtained with visible light, as well as various reactions depending on the object, can be observed. - Used widely for purposes ranging from hobby applications like fluorescent verification and lure phosphorescence to counterfeit detection of banknotes and industrial ultraviolet flaw detection lamps. *For more details, please refer to the related links or feel free to contact us.

• Other lighting equipment

Here are examples of the use of black lights in authentication and counterfeit prevention. Photographed by illuminating delivered mail with "PW-UV343H-03L." Ink barcodes that can be seen when exposed to ultraviolet light are printed. Since they cannot be seen under normal conditions, they can be printed in prominent positions. This technology is applied to sensing technologies that automatically recognize large quantities of products and packages. 【What is a Black Light】 - A general term for lights that emit wavelengths shorter than 400nm in the visible spectrum (ultraviolet light). - Fluorescent reactions that cannot be obtained with visible light, as well as various reactions depending on the subject, can be observed. - Used widely for purposes ranging from hobby applications like fluorescent verification and glow-in-the-dark lures to counterfeit detection of banknotes and industrial ultraviolet flaw detection lamps. *For more details, please refer to the related links or feel free to contact us.

• Other lighting equipment

Here are examples of using black lights for authentication and anti-counterfeiting. A credit card is illuminated and photographed with "PW-UV343H-03L." By exposing it to ultraviolet light, anti-counterfeiting marks become visible. The response may vary depending on the card issuer, but this is also used for counterfeiting checks. 【What is a black light?】 - A general term for lights that emit wavelengths shorter than 400nm in the visible spectrum (ultraviolet light). - It produces fluorescent reactions that cannot be observed with visible light, and various reactions can be seen depending on the object. - It is widely used for purposes ranging from fluorescent verification and hobbies like glow-in-the-dark lures to counterfeit verification of banknotes and industrial ultraviolet flaw detection lamps. *For more details, please refer to the related links or feel free to contact us.

• Other lighting equipment

Black lights are suitable for checking the anti-counterfeiting ink printed on banknotes. A 10,000 yen banknote was illuminated and photographed with "PW-UV343H-03L." When exposed to a 375nm black light, the anti-counterfeiting fluorescent ink on the banknote reacts with an orange color. Additionally, the banknote shows little reaction at a wavelength of 400nm. Please choose the wavelength according to your application. 【What is a Black Light】 ■ A general term for lights that emit light primarily in the ultraviolet range, which has a shorter wavelength than 400nm in the visible spectrum. ■ Fluorescent reactions that cannot be obtained with visible light, as well as various reactions depending on the object, can be observed. ■ Used widely for purposes ranging from fluorescent verification and hobbies like glow-in-the-dark lures to counterfeit detection of banknotes and industrial ultraviolet flaw detection lamps. *For more details, please refer to the related links or feel free to contact us.

• Other lighting equipment

Traditionally, ultraviolet light has been widely used for fluorescent reactions; however, considering the development of fluorescent agents and the dangers of ultraviolet light, there has been an increase in fluorescent agents that react to near-ultraviolet light. Consequently, utilizing the property of LEDs to emit specific wavelengths, there has been a rise in the use of LEDs that emit wavelengths that excite fluorescent agents for observation. In this context, our company can provide custom-made LEDs that peak at wavelengths in the visible light range, such as 445nm, 465nm, 505nm, and 520nm, in addition to ultraviolet light. If you can provide the excitation wavelength of the fluorescent agent you are using, we will prepare a suitable fluorescent handheld light for you. 【Features of Our Black Light】 ■ Custom-made options available for LEDs that peak at wavelengths in the visible light range, such as 445nm, 465nm, 505nm, and 520nm. ■ We offer suitable fluorescent handheld lights (note that some deep ultraviolet and unavailable wavelength ranges may exist). *For more details, please refer to the related links or feel free to contact us.

• Other lighting equipment

The "LED Black Light" we handle emits 100% output immediately upon powering on. A machine filled with fluorescent dye is illuminated with a UV light for photography. When the fluorescent dye is introduced into the pipe, any leakage points will fluoresce, allowing for the inspection of metal fatigue and damage in the pipe. It is used for maintenance of air conditioning pipes and other large machinery such as vehicles. 【Features of the LED Black Light】 ■ Emits 100% output immediately upon powering on ■ For inspections requiring precise output, the Hygrangea series is recommended; for simpler inspections, the bullet-type series is suggested ■ Usable for UV-curable resins and more ■ Available wavelengths from 365nm to 405nm *For more details, please refer to the related links or feel free to contact us.

• Other lighting equipment

Here are examples of the use of black lights in the manufacturing industry. A PCB board that has undergone soldering is illuminated and photographed with "UV-SVGNC365-01." The flux on the electronic board fluoresces under black light, allowing for visual confirmation of residual flux. Additionally, it makes it easy to detect foreign substances such as dust that can cause shorts, which is helpful for inspecting electronic components. 【Features of LED Black Lights】 - Immediate 100% output upon powering on - For inspections requiring precise output, the Hygrangea series is recommended; for simpler inspections, the bullet-type series is suggested - Usable for UV-curable resins and more - Wavelengths available from 365nm to 405nm *For more details, please refer to the related links or feel free to contact us.

• Other lighting equipment

Penetrant testing (PT) and magnetic particle testing (MT) are used for non-destructive inspection of metal parts in aircraft and metal fatigue in oil tanks. A test piece for penetrant testing was photographed using "UV-SVGNC365-01". After spraying fluorescent paint on the areas with metal fatigue and rinsing it off, fluorescent agents remain in the invisible tiny cracks. By applying fluorescent paint to those areas, it becomes possible to see cracks that are not visible to the naked eye. For inspections that require stable output and wavelength, the "Hygrangea series" is recommended. 【The inspection requires a black light that meets the following conditions according to JIS standards】 ■ Irradiation surface must be between 1,000μW/cm2 and 5,000μW/cm2 ■ The relative response characteristics must not exceed 105% at all wavelengths ■ Peak value must be between wavelengths of 355nm and 375nm ■ Value at wavelength 313nm must be less than 10% ■ Value at wavelength 405nm must be less than 2% *For more details, please refer to the related links or feel free to contact us.

• Other lighting equipment

"Black light" is a general term for lights that emit wavelengths shorter than 400nm in the visible spectrum (ultraviolet light). Since it emits light with higher energy than visible light, it produces fluorescent reactions and various responses that cannot be observed with visible light. Its applications are diverse, ranging from hobby purposes like fluorescent verification and lure luminescence to counterfeit detection of banknotes and industrial ultraviolet flaw detection lamps. Our Hydrangea series offers products in several wavelengths. In addition to ultraviolet light, we can also provide custom-made LEDs that peak in the visible spectrum at wavelengths such as 445nm, 465nm, 505nm, and 520nm. [Features] - Fluorescent reactions and various responses that cannot be obtained with visible light are observed. - Although it feels very weak to the human eye, it emits a lot of "invisible light." - We adopt the UVA wavelengths commonly used in industrial applications (365nm to 405nm). *For more details, please refer to the related links or feel free to contact us.

• Other lighting equipment

The "LED Handy Inspection Light" is a product that uses green light, which is highly visible to the human eye. It supports the visual inspection of tiny surface scratches, foreign objects, dust, and more. With its powerful light, it can detect small foreign objects and irregularities. Additionally, it features a "focus control function" that allows for stepless adjustment of the illumination range by sliding the head of the light. 【Features】 ■ Rechargeable type with focus control function ■ Uses green light, which is highly visible to the human eye ■ Supports visual inspection of tiny surface scratches, foreign objects, dust, etc. ■ Allows for stepless adjustment of the illumination range by sliding the head of the light *For more details, please refer to the related links or feel free to contact us.

• LED lighting
• Other lighting equipment

The "KE-303" is an alcohol tester equipped with a high-precision sensor that has minimal misreading. It can measure simply by blowing into it for 6 seconds while an electronic sound is ringing. By using individual mouthpieces, multiple people can take measurements. With a memory function that stores 5 results, you can check the measurement results at any time, making it suitable for recording. 【Features】 ■ Electrochemical sensor ■ Mouthpiece type ■ Direct blowing type ■ Easy measurement ■ Memory function included ■ Long lifespan and sensor replacement *For more details, please refer to the PDF document or feel free to contact us.

• Other measurement, recording and measuring instruments

The KE-302 is a pocket-sized alcohol tester. It allows for easy measurement by simply blowing into it. The measurement results are displayed immediately, and you can measure multiple times in a short period. It comes with two AA batteries, features a digital display, and uses a semiconductor gas sensor for detection. 【Features】 ■ Easy operation ■ Clear numerical display ■ Quick and highly sensitive measurement ■ Excellent portability ■ Includes two AA batteries *For more details, please refer to the PDF document or feel free to contact us.

• Other measurement, recording and measuring instruments

A new model equipped with the latest UV-LED from Nichia Chemical has been released in our black light "Hydrangea Series"! The output has increased compared to previous products! It offers excellent cost performance and has been renewed with the addition of a rechargeable type, which was highly requested. It features a focus function that allows you to adjust the front part back and forth to change the irradiation intensity and range. Depending on your usage, you can choose from rechargeable battery type, dry battery type, outlet type, or mobile battery type. In the case of dry battery type, the lighting time in high mode is 30 minutes, while the rechargeable type lasts for 4 hours. For the dry battery type, when the battery capacity decreases, the light will blink to alert you, preventing sudden battery depletion, and it is compatible with a wide range of voltages, allowing you to use various types of batteries. 【Features】 ■ Reliable output ■ Battery level warning (dry battery type only) ■ Compatible with various batteries ■ Trustworthy Japanese manufacturing ■ No standby time ■ Compact and lightweight ■ Long lifespan *For more details, please refer to the PDF document or feel free to contact us.

• Other lighting equipment

We would like to introduce the rechargeable battery type of our black light, the "Hydrangea UV-SU Series." The long-awaited rechargeable battery type has arrived in the Hydrangea series. It achieves long hours of lighting even wirelessly. Previously, black lights took about 10 minutes to start up, but with LED, it can light up immediately after the switch is turned on. 【Features】 ■ Reliable output ■ Trustworthy Japanese manufacturing ■ No standby time ■ Compact and lightweight ■ Long lifespan *For more details, please refer to the PDF document or feel free to contact us.

• Other lighting equipment
• LED lighting

The "Hydrangea UV-SU Series" is a blacklight equipped with LEDs manufactured by Nichia Chemical. In the case of battery-operated models, the light will blink to alert you when the battery capacity decreases, preventing sudden battery failure. It is compatible with a wide range of voltages, allowing you to use various types of batteries. Depending on the application, we also offer power supply products such as rechargeable batteries, wall outlets, and mobile batteries. Previous blacklights had lamps that lasted about 1000 to 2000 hours, but ultraviolet LEDs have a lifespan several times longer than those. 【Features】 ■ Output remains constant regardless of battery level due to in-house developed microcontroller control ■ All components, including the driving circuit, LED board, and used LEDs, are high-quality parts made in Japan ■ Can be turned on immediately after switch input ■ Operates on batteries, achieving high portability and work efficiency ■ Increased irradiation intensity and LED lifespan *For more details, please refer to the PDF document or feel free to contact us.

• Other lighting equipment
• LED lighting

The "PB-01A" is a high-performance, low-cost LED blacklight. Utilizing the immediate lighting characteristics of LEDs, it demonstrates mobility. The body is made of resin to consider leakage, and the handle shape is designed for easy holding of items like oilers. It illuminates a wide and uniform observation area with a high-performance LED lamp. 【Features】 ■ Compact and lightweight body (520g) ■ Handle shape designed for ease of grip ■ Compliant with JIS Z 2323 ■ Body made of resin to consider leakage ■ Achieves high performance at a low price *For more details, please refer to the PDF document or feel free to contact us.

• Lamps and light emitting devices
• Other lighting equipment
• LED lighting

"Blacklight" is recommended for inspections in the manufacturing and inspection industries. In "electronic devices and precision parts inspection," when exposed to blacklight, flux and contamination (foreign substances) on electronic components and circuit boards emit light, allowing for easy visual detection and removal. In "leak tests (oil leak checks)," oils that fluoresce under near-ultraviolet light can be easily confirmed. In leak tests using fluorescent agents, when blacklight is applied, the leaking areas glow vividly, making it easy to detect leaks. In "surface crack inspection of metals and non-metals," fluorescent magnetic particle testing and fluorescent penetrant testing use magnetic powder or penetrant containing fluorescent substances. When illuminated with blacklight, the fluorescent material remaining in the cracks (defects) glows, allowing for the detection of even tiny flaws. *For more details, please refer to the PDF document or feel free to contact us.

• Lamps and light emitting devices
• Other lighting equipment

The LED black lights we offer emit 100% output immediately after turning on the power. There is no need to wait for a warm-up time like traditional black lights. For inspections that require precise output, we recommend the "Hydrangea Series," and for simpler inspections where the wavelength matches, the "Bulletproof Series" is suggested. 【Product Lineup】 ■ Hydrangea Series - High quality and professional-grade - Reliable output and stable irradiation ■ Bulletproof Series - Suitable for both serious work and hobbies *For more details, please refer to the PDF materials or feel free to contact us.

• Lamps and light emitting devices
• Other lighting equipment

Our company offers products with several types of wavelengths. As the wavelength increases, the irradiation range (purple light) becomes easier to see, but the excess light on the irradiation surface may become stronger, making the reaction of fluorescent substances more visible. The wavelength that fluoresces varies depending on the object being used. Please choose the appropriate wavelength based on your usage environment and the object. Additionally, in recent years, inexpensive black lights using overseas-made LEDs have been sold, and these products often use LEDs with a peak wavelength of 395nm, which is technically simple. Our "Bullet-Type Black Light" features a wavelength of 375nm made by Japan's Nichia Corporation, and because it has less visible light, the appearance of the irradiated object differs, so please check that difference. *For more details, please refer to the PDF materials or feel free to contact us.

• Lamps and light emitting devices
• Other lighting equipment

Visible light, which can be seen by the human eye, appears in various colors depending on the length of its "wavelength." The wavelength of light that is visible to the human eye ranges from approximately 400nm to 750nm. In contrast, wavelengths below 400nm, which cannot be seen by the human eye, are referred to as "ultraviolet light," meaning light beyond violet. Therefore, while black lights may not seem to emit much light to the human eye, they actually produce a significant amount of "invisible light." Ultraviolet light affects the human body depending on its wavelength, but the black lights we handle emit relatively low levels of impact on the human body, utilizing wavelengths in the UVA range (365nm to 405nm) that are commonly used in industrial applications. *For more details, please refer to the PDF materials or feel free to contact us.*

• Lamps and light emitting devices
• Other lighting equipment

"Black light" refers to a general term for lights that emit wavelengths shorter than 400nm in the visible light spectrum, primarily ultraviolet light. Since it emits light with higher energy than visible light, it produces fluorescent reactions that cannot be observed with visible light, as well as various reactions depending on the object. Its applications range widely from hobby purposes like confirming fluorescence and glow-in-the-dark lures to counterfeit detection of banknotes and ultraviolet deep curing lamps for industrial use. *For more details, please refer to the PDF document or feel free to contact us.*

• Lamps and light emitting devices
• Other lighting equipment

This document is a collection of basic knowledge introducing "black lights." It is a general term for lights that emit wavelengths shorter than 400nm in the visible light spectrum (ultraviolet light). Since it emits light with higher energy than visible light, various fluorescent reactions and different responses depending on the subject can be observed, which cannot be obtained with visible light. Its applications range widely from hobby purposes such as fluorescent confirmation and lure phosphorescence to counterfeit detection of banknotes and industrial ultraviolet flaw detection lamps. Our company offers products with several different wavelengths. Please confirm the wavelength using the nm value. [Contents] ■ What is a black light? ■ What is ultraviolet light? ■ Differences by wavelength ■ Usage of black lights ■ Examples of black light applications *For more details, please refer to the PDF document or feel free to contact us.

• Other lighting equipment

Contec Co., Ltd. is a manufacturer that develops and sells handheld black lights using only domestically produced ultraviolet LEDs. We offer a variety of high-performance black light series, such as the Hydrangea series, suitable for use in specialized institutions like production sites, laboratories, and hospitals, as well as black lights for hobbyists. We accurately understand our customers' usage needs and provide recommendations for suitable models. Additionally, we can accommodate OEM requests tailored to our customers' needs. Our product is a high-quality, domestically produced handheld UV-LED sterilization light. It can easily sterilize places and objects that cannot be washed, and its handheld design makes it highly portable. By irradiating at the overlapping distance of two irradiation indicators, it can effectively sterilize. 【Features】 ■ 99.9% sterilization ■ Reliable output ■ Battery level warning ■ Compatible with various batteries ■ No standby time *For more details, please refer to the PDF document or feel free to contact us.

• Other inspection equipment and devices
• Other safety and hygiene products
• Ultraviolet irradiation equipment

This catalog introduces the "LED BLACK LIGHT" handled by Contec Co., Ltd. It features the "Hydrangea Black Light," which uses a stable irradiation chip-type LED, as well as the versatile "UV LED BLACK LIGHT" and details about "magic printing," which becomes visible under black light. Please use this for selecting products. [Contents (partial)] ■ What is a black light? ■ What is ultraviolet light? ■ Differences by wavelength ■ About the use of black lights ■ Product list, etc. *For more details, please refer to the PDF document or feel free to contact us.

• Other lighting equipment

"Magic Printing" is a color printing that becomes visible when exposed to black light. Since it uses invisible ink, it may initially appear as if nothing has been printed, but when a black light is applied, the printed image can be seen. It can be used for greeting cards, business cards, hobbies, art, as well as for surprise presentations and events. Additionally, we offer convenient optional goods for ultraviolet irradiation work. 【Features】 ■ Becomes visible under black light ■ Very colorful despite using invisible ink ■ The glowing colors are enchanting ■ Can be printed by yourself (if you have a compatible printer) *For more details, please refer to the PDF materials or feel free to contact us.

• Printing Machinery

The "Hydrangea Series" is a black light that uses stable irradiation chip-type LEDs. All components, including the drive circuit, LED board, and used LEDs, are high-quality parts made in Japan. We offer a variety of models, including the "Focus Type" with a focus adjustment feature, as well as the "UV-SVG Type" and "UV-033 Type," which excel in output and cost performance. 【Features】 ■ Reliable output ■ Battery level warning ■ Compatible with various batteries ■ Trustworthy Japanese manufacturing ■ No standby time *For more details, please refer to the PDF document or feel free to contact us.

• Other lighting equipment

The "UV-SVGNC365-01F" is a black light equipped with a focus control feature. It is compatible with various batteries, achieving a compact and lightweight design through battery use. Additionally, because it uses ultraviolet LEDs, it has a lifespan several times longer than traditional black light lamps. 【Features】 ■ Reliable output ■ Battery level warning ■ Compatible with various batteries ■ No standby time ■ Compact and lightweight *For more details, please refer to the catalog or feel free to contact us.

• Other inspection equipment and devices
• Chip type LED