Realite MR11 Dichroic 20W 10 Degree Coloured Lamp


Manufacturer: Realite
Model: MR11 Dichroic 20W 10 Degree Red/Yellow/Green/Blue
Application: Speciality, Accent Lighting
Wattage: 20W
Diameter (max): 35mm
Length: 40mm
Tube Length: N/A
Bulb/Tube material: Inner: Quartz.  Outer: Glass - Dichroic cold light reflective coating on rear, and coloured dichroic coating on front
Colour Temperature: Unknown
Peak output wavelength: N/A - Broadband Emission
Total light output: Unknown
Rated lifetime: 2000 Hours
Cap: GU4
Operating voltage: 12V AC or DC
Operating current: 1.7A
Warmup/restrike time: N/A
Cost (original): 1.99 (Q2 2005 from Maplin Electronics)
Place of manufacture: Unknown
Date of manufacture: Q1 2005

These things have started popping up everywhere lately.  I first encountered them in the cafe/lounge area in the Student Union of The Robert Gordon University in Aberdeen, and was instantly captivated...and I wanted to go and start pulling the lamps out of the ceiling to get a better look.  Walked in, they looked purple - all of them...but were all casting a vivid coloured spot on the floor beneath them...in blue, yellow, red, pink and green...Three years on, I finally spotted some in Maplin.

It's a very normal low wattage low voltage dichroic MR11 halogen lamp from a technical standpoint.  What makes it somewhat special however, is the coloured filter applied to the lens.  I've seen several cheap knock-offs of this type of lamp, which just use a coloured lacquer on the lens.  It works, but tends to flake off and fade.  This however seems to have a proper dichroic coating.  You can tell that because the actual colour of the filter appears to change depending on the angle you look at it from.  Reflections too seem to have a very distinct yellow colour to them.  It is really very, very pretty to look at...hence that this lamp has been sitting on my desk for the last day and a half.

 

Realite MR11 Dichroic 20W 10 Degree Coloured Lamp - General overview of blue lamp

Realite MR11 Dichroic 20W 10 Degree Coloured Lamp - General overview of blue lamp

 

Realite MR11 Dichroic 20W 10 Degree Coloured Lamp - Lineup of all four colours of this lamp that were stocked by Maplin

Realite MR11 Dichroic 20W 10 Degree Coloured Lamp - Lineup of all four colours of this lamp stocked by Maplin

 

Realite MR11 Dichroic 20W 10 Degree Coloured Lamp - Showing rear of reflector and lamp cap

Realite MR11 Dichroic 20W 10 Degree Coloured Lamp - Showing rear of reflector and lamp cap

 

Realite MR11 Dichroic 20W 10 Degree Coloured Lamp - Detail showing highly reflective colour shifting effect of the dichroic colour filters

Realite MR11 Dichroic 20W 10 Degree Coloured Lamp - Showing the highly reflective and colour changing properties of the dichroic filters

 

Realite MR11 Dichroic 20W 10 Degree Coloured Lamp - Lamp packaging

Realite MR11 Dichroic 20W 10 Degree Coloured Lamp - Lamp packaging

 

Realite MR11 Dichroic 20W 10 Degree Coloured Lamp - Detail of lamp reflector

Realite MR11 Dichroic 20W 10 Degree Coloured Lamp - Detail of lamp reflector

 

Realite MR11 Dichroic 20W 10 Degree Coloured Lamp - Detail of all reflectors - Note complimentary colour of reflections from the overhead light in front of the lamps

Realite MR11 Dichroic 20W 10 Degree Coloured Lamp - Overview of all reflectors - note the complimentary colour of the reflections cast in front of the lamps from the overhead light

 

Realite MR11 Dichroic 20W 10 Degree Coloured Lamp - Showing size of lamp

Realite MR11 Dichroic 20W 10 Degree Coloured Lamp - Showing size of lamp


This lamp added to the virtual display shelf on 15th June 2005.


This page last updated:

18th June 2023: Made changes to page formatting to improve readability on mobile devices, and some background code changes to improve search engine behaviour.


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