LED luminaires for museums and art galleries: HIGH FIDELITY for restorers Master Light (St. Petersburg), LEDING W and S-Series (Ningbo), variable focal length luminaires ZEUS, ERCO (Germany), RAMO INDUSTRIES (France), ALEDO.   

LED luminaires for museums and art galleries. Modeling results:

Download all light modelling work in high resolution (archived WinRar, 600 Mb)

Table of contents:

1. Variable Focal Distance Luminaires 20-60 ZEUS (CRI92, China)

2. ERCO luminaires for museums and galleries PARSCAN series (Germany)

LEDING W and S-Series luminaires with color rendering index CRI97.6 (China) 3.

4. Professional lighting fixtures with color rendering MASTER LIGHT ALPHA 16, ALPHA 36 (St. Petersburg, CRI98, CREE) and accessories. 

5. Professional luminaires for RAMO INDUSTRIES galleries and museums (France, CRI98), with CRI98 color rendering, bifocal glass lenses, variable focus 20-60, built-in dimmer, light spot without peripheral aberrations and distortions.

6. DEDOLIGHT luminaires and accessories for the film and photo industry and galleries (Germany, USA)  

1. Luminaires with variable focal length 20-60 ZEUS (CRI92)   

If professional light is unaffordable, the minimum acceptable option in terms of result price can be implemented on ZEUS equipment. These luminaires will not give such accurate color rendering as MASTER LIGHT, LEDDING, ERCO or RAMO, but they are better suited for museum, gallery lighting than conventional commercial light used in stores. In sections 2-5, you can compare ZEUS luminaires with professional or semi-professional lighting equipment, it is characterized by a more accurate color rendering over the entire range (CRI no longer always meets the requirements of professionals - there are artificially high values in the visible spectrum and failure in another part of the spectrum - for more complex and demanding tasks use professional light), more precise optics, light safety for samples, precise and smooth dimming, no aberrations throughout the light spot field and especially at the periphery, a large arsenal of interchangeable optics, accessories in the form of - lenses, filters, diffusers, curtains, gabo, better materials. Another important point is that professional luminaires, due to more complex and expensive power supplies, do not produce the effect of "flickering" - flickering during reportage TV and video shooting - this may be a fundamental requirement for media public places, when shooting face close-up, with the background light of the gallery turned on. 

ARLIGHT ZEUS Luminaire with variable focal length in the range of 20-60 degrees (download PDF) 

Luminaire ZEUS 20W price 

The site of the manufacturer: arlight.ru

2. Luminaires for museums and galleries ERCO

ERCO PARSCAN luminaire (PDF) 

In Yekaterinburg and Moscow, it is possible to order catalogs and to order equipment demonstrations and help to find a solution - +7(343)2687003.

Approximate design cost of the device PARSCAN 40W - 428 Euro (prices give a complete solution, and the devices in different projects may cost differently - ERCO sells not fixtures, but the light solution.  This is the position of the company ERCO).

ERCO.Culture Cluster Catalogue (PDF)

Catalog ERCO.LED Lights 2019 (PDF) 

ERCO Catalogue.Desktop guide to light design (PDF) 

Catalog ERCO.Trade Cluster (PDF) 

The site of the manufacturer: ERCO.com 

3. LEDING W and S-Series luminaires with color rendering index CRI97

LEDING lights for illumination of paintings and expositions - museums, exhibitions, art objects with high technical requirements on color rendering, light transmission, protection against ultraviolet and thermal protection. Two basic sizes and types of W-Series case (round case design, it is possible to mount the luminaire on the wall and ceiling with an additional accessory and, as standard, on the track) with various accessories, 9-type optical diffusers and two colors of the luminaire case and profile - black and white. H-Series (square design of the luminaire body, it is possible to mount the luminaire on the wall and ceiling with an optional accessory and, as standard, on the track) and T-Series (plunge cut into the ceiling). 

The main advantages when compared to the non-specialized museum track LED luminaire:

•  Precision built-in lenses
•  Smooth manual dimming (brightness adjustment) in each device (optional)
•  High precision LED matrix and density of light characteristics (see light diagrams below)
•  High color rendering (CRI 97.77 cm measurement results and comparative photo color rendering on sanguine and oil)
•  Precision "trio" - beam optics (the original development of Leding allows to minimize the binary dispersion of LEDs)
•  Quick-change secondary optics (9 basic types of optical diffusers including "oval" (horizontal, vertical - the most used type of optics for picture galleries), circular filling, circular filling, trapezium - angles from 12 to 64) 
• Two variants of color design of the body and tracks - black and white
• Very good effect of this LED light gives at backlighting oil and watercolor paintings, sanguine
• The important parameter of light parameter at illumination - uniformity of a light stain on all area, including periphery
• Ability to mount on the ceiling and wall in standalone mode (without using tracks) through an optional accessory cup GA-75
• Optional Accessories - Anti Glare Ring side light hoods and Walwasher Blocker side light part canopies
• Napkin and velvet cover - as a gift to each lamp 

 Download IES Profile W-Series (IES)

 Download H-Series Profile (PDF, Instruction Manual Track LED Lamp for H-Series museums and galleries)

 Download IES Profile H-Series (IES) 

The large number of interchangeable optics developed in OSRAM's optical laboratory, the mandatory brightness adjustment function, and the concise design on each luminaire make LEDING luminaires professionally suitable for museums, galleries and private collections.

A wide range of replacement optics (9 main types of replacement lenses - Oval, Gulf, Circle in different sizes and blurring boundaries), replacement hoods, filters, profiles for overhead suspension or flush mounting, hangers, adapters and adapters - the entire range you can find in the specification for each lamp in the price list or in the full catalog:

Selection of the required light spot occurs in two stages - we have to choose the angle of the primary fixed optics - it is on the lens, after selection it is fixed and installed at the factory, then we have to choose the type of secondary removable lens (it is shown in the photo below with a statuette) - this lens will, together with the primary optics will determine the final light spot. The secondary lens can rotate around the axis - we can give any angle to the light oval. Tables for calculating the optics are given in the profile to each luminaire, as well as available for download on the website (included in the full catalog).

На примере освещенность экспоната прибором W61 мощностью 24W источником с дневным светом 4000К 

W-series

High CRI value 97.6 

max.=100) help to reproduce original colors close to natural and large picture details   

Precise distribution of the light spot due to the use of the original optical matrix Ding optical system

 Cases of special design: a combination of materials - painted metal and plastic - two versions in black and white.  

High temperature color distribution density of light over the entire range

Precise selection (chip binning) and color calibration of each LED in the light matrix ensures high light distribution accuracy

H-series

Special fashionable black and white body design is a worthy addition to your exposition    

 Несколько вариантов быстросменных прецизионных линз для корректировки пятна светораспредедения 

Точная оптика рассеивателя использует принцип "тройного" луча распределения

The basic CRI color rendering performance of the H,W Series is very high, as evidenced by the UPRTEK 350s portable spectrometer:

Comparative visual analysis of oil and sanguine works using traditional lighting and special lighting:

Fig. 1. Conventional daylighting with daylight lamps and LED daylight fixtures 

Fig. 2. Illumination with daylight lamps and LED luminaires W-Series "Oval" 3400K

High precision optics with high light transmission coefficient and specialized type SMD diode with high light output have been successfully tested. Soft soft soft dimming, high CRI>97 color rendering coefficient, 24W-45W power, body color to choose from, replaceable optical tips, durable silent operation (3 years warranty).

Approximate cost of the luminaire without additional options - $112.

Options include: quick-change secondary optics (12 lens set), brightness adjustment, wall and ceiling mount caliper options, curtains, beam power from two options - 24W and 40W, housing color and light temperature. 

 
Examples of using H-Series and W-SEries luminaires for exposure lighting