Comments for reviewlcdmonitor.com

Comment on Ultra-efficient liquid crystal projection displays: Polarizer-free displays using continuous polarization gratings. by kchididdy

kchididdy — Sun, 20 May 2012 00:41:55 +0000

Try wrapping a piece of glass with several layers of clear packaging tape in a random fashion. You’ll see a bunch of interesting shapes as you rotate the piece. i wonder if the film blocks all photons with circular or elliptical polarization as well???

Comment on Ultra-efficient liquid crystal projection displays: Polarizer-free displays using continuous polarization gratings. by Intosia

Intosia — Sun, 20 May 2012 00:31:43 +0000

Loved it

Comment on Ultra-efficient liquid crystal projection displays: Polarizer-free displays using continuous polarization gratings. by AMiGR667

AMiGR667 — Sat, 19 May 2012 23:43:17 +0000

Indeed it is. You have a good pair of sunglasses then.

Comment on Ultra-efficient liquid crystal projection displays: Polarizer-free displays using continuous polarization gratings. by lexichronicle2

lexichronicle2 — Sat, 19 May 2012 23:22:26 +0000

that’s going in the favourites! very neat. scientific glassblowers do use these to look for stress in the joints after blowing and then again after annealing the glass (which is supposed to equilibrate the stress)

Comment on Ultra-efficient liquid crystal projection displays: Polarizer-free displays using continuous polarization gratings. by azayles

azayles — Sat, 19 May 2012 23:01:27 +0000

Jeri, you should make a rotatable polarising lens attachment to fit onto the camera, maybe attaching it with NiB magnets

Comment on Ultra-efficient liquid crystal projection displays: Polarizer-free displays using continuous polarization gratings. by parmismahdis100

parmismahdis100 — Sat, 19 May 2012 22:47:06 +0000

You Should say: View Stress in Transparent Materials

Comment on Ultra-efficient liquid crystal projection displays: Polarizer-free displays using continuous polarization gratings. by jeriellsworth

jeriellsworth — Sat, 19 May 2012 22:28:45 +0000

Good point.

Comment on Ultra-efficient liquid crystal projection displays: Polarizer-free displays using continuous polarization gratings. by thecheatdx

thecheatdx — Sat, 19 May 2012 22:15:11 +0000

You have fashioned a very simple polariscope! I’ve used these when determining stress concentration factors on parts that have already been manufactured and it is inconvenient to construct a finite element model. Based on the color boundaries, you can determine the relative strain field. Due to the way birefringence works, the colors seen are directly proportional to the difference in strains in the two orthogonal principal stresses.

Comment on Ultra-efficient liquid crystal projection displays: Polarizer-free displays using continuous polarization gratings. by thecheatdx

thecheatdx — Sat, 19 May 2012 21:34:20 +0000

Therefore, if you can determine the color at an edge where one principal strain is zero, you can determine absolute strain. When a part is not conveniently translucent, a reflective paste/adhesive and a transparent plastic plate that becomes pliable when heated is attached to the part. This allows you to determine a strain field on nearly any surface that can be followed by the plastic.

Comment on Ultra-efficient liquid crystal projection displays: Polarizer-free displays using continuous polarization gratings. by Jun127

Jun127 — Sat, 19 May 2012 21:29:14 +0000

She would be a really good teacher.