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LAMPS CATALOG CATALOG Focused Innovation LAMPSLAMPS CATALOG CATALOG Focused Innovation. TABLE OF CONTENTS Introduction ............................................................................................................................1 HPX Engineering & Industry Leadership ..........................................................................2 HPX Miniature Lamp Types .................................................................................................2 Miniature Halogen Lamps—Optical Characteristics .....................................................3 Miniature Halogen Lamps—Electrical Characteristics.................................................5 Miniature Halogen Lamps—Mechanical Characteristics ............................................6 Miniature Halogen Lamps—Environmental & Operational Conditions......................7 High-Impact Illumination Designed for High-Performance Products.........................8 Miniature Halogen Lamps—General-Illumination Lamps, Wire Terminals ...............8 Miniature Halogen Lamps—General-Illumination Lamps, Based Lamps................11 Miniature Halogen Lamps—Reflectorized Lamp Types, Parabolic & Elliptical......11 Halogen Lamps—Application Notes, Enhanced UV Miniature Lamps ....................16 Halogen Lamps—Application Notes, Enhanced UV Miniature Lamps ....................16 Medical & Dental Instruments..........................................................................................18 Miniature Halogen Lamps—Medical & Dental Instrument Lamps...........................18 Analytical Instruments .......................................................................................................19 Miniature Halogen Lamps .................................................................................................20 Miniature Halogen Lamps—Lamp Base.........................................................................21 With over 80 years of delivering high-performance As with any advanced technology, it is important that lighting solutions to customers worldwide, Welch Allyn you understand key application techniques. This HPX continues this tradition with its HPX technology. Technical Operation Guide has been arranged to help you easily find the information you need for your Our enviable reputation for engineering lighting specific application. It summarizes important lamp solutions that exceed industry performance standards, configuration, performance data and technical while providing the consistent light output that our information that will help get you started. customers demand, continues to drive our HPX technology. We also know that the products you design By following the specifications given in this guide, you must not only meet your customers’ requirements, they (and your customers) will be rewarded with years of must also set themselves apart from your customers’ dependable, troublefree service from your new HPX competition. HPX lamps will accomplish this for products. Please read these instructions thoroughly you...and much more. before use. HPX products give you the design flexibility for use For more detailed information on specific HPX in a wide variety of applications. When properly lamp solutions, please contact your Welch Allyn specified and applied, they will reliably provide representative. excellent and predictable product performance. HPX—Precision Lighting Solutions Engineered for Your Products. 1 HPX ENGINEERING & INDUSTRY LEADERSHIP You’re creating innovative products that require advanced Superior Light Maintenance Light Maintenance and high-performance lighting systems. The final solution HPX lamps are among the % of initial light output at 70% of rated life must meet the most demanding specifications...yours. To industry’s best at maintaining ensure that each of your lighting applications meets with high light output levels over Halogen success, Welch Allyn offers you complete design, engineering the life of the lamp. What’s and manufacturing services for your specific project. more, the life of an HPX lamp is considerably longer than that Gas Lighting Products Development Team of most competitive high color When designing a custom lighting system for your product, temperature lamps. you’ll have direct access to our experienced team of lighting Vacuum engineers—all of whom have years of experience designing Precision Performance Initial light output (spherical candlepower) and manufacturing miniature lamps to strict electro-optical Guarantee Time requirements. These industry experts can advise you on Welch Allyn has developed several proprietary design, the best possible solutions to any of your complex lighting tight-tolerance manufacturing and quality-checking needs—and help you save valuable design and production processes for all of our lamps. These time in the process. PERFO methods are also applied to each of N R IO M our custom-built lighting systems. S A I N Consistent, Reliable Light Output Performance C E By demanding superior performance C R E P As is the case with all HPX products—from lamps and from each HPX lamp, we help ensure G E U E A T R N lenses to complete modules—our custom-built systems the reliability and outstanding performance A are manufactured to tolerances that will exceed of your products—and enhance their industry standards and provide the consistent light overall value to your customers. Our goal is 100% output you demand. quality, and our Precision Performance Guarantee Industry standards typically backs it: if an HPX lamp does not perform to your Lamp Tolerances specifications under normal operating conditions, we specify lamps with current 40 38 Industry will replace it free of charge.* draw tolerances of ±10%. standard 36 30-40% 34 output This means that light output 32 variation can vary anywhere from 30 28 HPXHPX MINIATUREMINIATURE LAMPLAMP TYPESTYPES 30%–40%. HPX lamps 26 24 typically have current 22 20 Welch Allyn High performance, high quality and long life are why draw tolerances of ±5%. 18 15-20% 16 output HPX lamps deliver superior light maintenance. To help variation This, in turn, reduces the 14 12 meet your specific lighting requirements, HPX lamps are possible light variance 10 8 easily customized. Our vacuum and gas-filled lamps are 6 to just 15%–20%, Potential output variation, % MSCP 4 especially well suited for short duty cycles. giving you higher-quality, 2 uniform illumination. 0 Current draw tolerances, % Amps Halogen Lamps Our strict standards also help to ensure that every HPX lamp, subassembly and module The halogen lamp achieves light output through the operate with identical performance characteristics. This incandescence of a tungsten filament. Similar in construction saves you and your customer the time and money required to the gas-filled lamp, halogen lamps contain an inert gas to recalibrate or readjust the lighting system each time a combined with an active halogen compound. The inert lamp is replaced. gas suppresses tungsten evaporation, while the halogen chemically combines with the tungsten evaporated from Maximum Light Output the filament, preventing deposition of the tungsten on the Our unique Precision Optical Basing technique is applied lamp wall. Through a chemical regenerative cycle, the to all of our custom-built HPX lamps. This guarantees tungsten is redeposited on the filament and halogen is that the lamp’s vital optics are on center with the lamp’s then freed from the tungsten to repeat its active role. base to within ±.127 mm therefore guaranteeing that the For the halogen regenerative cycle to work, the lamp lamp will work to its full potential with any fixed external must be maintained at a certain temperature. For higher optics, lenses, reflectors or modules. What’s more, our wattage halogen lamps this critical temperature is Precision Optical Basing technique also works with lensed- approximately 250˚C. For some of our miniature and sub- end lamps, ensuring consistent spot projection from lamp miniature halogen lamps, the critical temperature is less to lamp. than 250˚C. This is due to our unique gas chemistries and lamp designs. 2 *For details, see our standard terms and conditions of sale. It is recommended that you check with Welch Allyn Since these lamps lack an internal gas atmosphere, the engineers for the critical temperature for the lamp you surface temperature will be cooler and luminous stability select. These lamps are very application dependent, with is more easily achieved. duty cycle and heat sinking being prime considerations. Light output decreases over the life of the lamp due to Halogen Advantages tungsten evaporation and its deposition on the interior glass surface, darkening the lamp wall over time. The rate • Highest color temperature of darkening increases as the color temperature increases, • Highest luminous efficacy and is typically referred to as the loss of maintenance— • Superior maintenance and life as a result of the halogen the ability of the lamp to maintain its initial level of light output. Lamp failure is ultimately caused by the evaporation regenerative cycle of tungsten from the filament and subsequent thinning of • Color temperatures typically range from 2,700˚K to 3,350˚K the filament wire to the point of burn through. Another with current draw less than 3.0 amperes form of failure occurs when the level of light output • Surface temperature is similar to comparable gas-filled lamps diminishes to the point at which it is insufficient for (halogen lamps do run slightly higher than a vacuum lamp of the application. comparable
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