INCREASE LIGHT by SQUEEZING LEDs With a FRESNEL

Some time back someone asked  me,

I just want to find some way to make an RGB bulb spot light as tight a beam as possible for my Disco ball ?

Here is a BIG 10mm Bulb LED being Squeezed into a tight beam by lens to just a spot 10 feet away.

Step 1: What Is a Fresnel Lens

Maybe first .....  what is a lens ?

• A neat device to bend light
• Usually Round Glass or Plastic
• Increasingly useful through our racial history
• Big glass Lenses are Heavy

But ... Fresnel Lenses are thin, lite and use only the light bending parts of a lens see the pictures.

No need to be alarmed... In the hand pic #4,  I have all four fingers.  The Lens edge does not see my little finger.

Fresnel plastic lenses are flat and light enough to snail mail a whole 10½ inch square lens.

Step 2: RGB MR16 LED

MR16 Lamps in discreet restaurants and bars are a favorite localized lighting.

Here is an RGB LED array masquerading as an MR16  providing a multitude of color effects.

Step 3: Holding Plastic Fresnel Lens

Using forcep clamps _{made in Pakistan} to hold the 10½" Sq Fresnel by two corners.

Several colors of the LED MR16 Lamp compressed to a small circle 8 feet distant.

And No...... the Fresnel is obviously not color corrected.

Step 4: SINGLE LED ACTION

NO  FRESNEL  NEEDED

Aim a single 10mm LED powered from a Cadillac Light Thief  at
the glass refracting globe fourteen feet away.

The LED is a 15º dispersion angle and covers a ten inch globe
without using a Fresnel lens to focus a tighter beam.

Step 5: REFLECTING GLOBE

See the Globe in the light of a Single LED.
Just a few pictures with-out using a Fresnel aiming lens.
I used this glass globe in place of a Disco-Ball.


FINALLY

Placing a DISCO - BALL in the center of a 30x30 foot dance floor
Illuminated by assorted 10mm narrow dispersion LEDs will
give you 900 square feet of dancing lights to enjoy :-)