Different Fresnel Lenses, Different Capabilities

A quick demonstration of the difference between a Spot Lens and a Linear Lens, both of which are used in big screen TVs. The punchline being spot lenses can do everything that a linear lens can, and much more. Much higher temperatures achieved with a spot lens.

Category:

Education

Tags:

• FRESNEL
• LENS
• LINEAR
• TV
• COOK
• FOOD
• SOLAR
• ENERGY
• FREE
• BAKE
• COOKING

[greyhoundfriend123]

That was really amazing. I saw the framing, the awesome spot lens and I can't wait to watch the actual cooking!

[fencekid]

@greyhoundfriend123 Hey, my first four videos are cooking vids. Solar pot roast, pot roast with cornbread, hot dogs and hash browns. Hope you enjoy.

[jframe39]

hey pal. nice video I'm hunting spot lens big screens.  what manufacture has the best clearest fresnel toshiba Mitsubishi. Etc. any help would be nice

[fencekid]

@jframe39 My best lenses came out of older, wooden console type big screens. You can see one in my hot dog vid. Made that vid with the lens out of that tv. Seems like the newer the tv, the lamer the lens. Haven't taken notes on manufacturing names, but from now on.........

[OJA23122011]

Thanks for sharing your experience keep up the good work

[Cjaz84]

where do I find out the math here...for the focal point to use and how high to put the thing up to create a semi stable cooking source.  I only have a general knowledge of optics but why the hell has someone not made some sort of camping oven out of this? using more diffused light at different focal points seems like you could get some bit of control. But vids are awesome dude!

[mikesamc]

good to know

[ironhead41]

excellent.....