HP Forum Archive 19

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HP-35s current production line question Message #1 Posted by Jaime Morales on 4 Nov 2010, 2:39 p.m. I purchased an early production HP-35s, not long after they were introduced. I am curious if HP has addressed the somewhat highly reflective plastic LCD cover in current models? The glare has presented quite a problem in my present working environment. I just borrowed an HP-33s from a colleague and it seems to provide better viewing contrast (at all viewing angles) compared to my HP-35s.

Re: HP-35s current production line question Message #2 Posted by David Hayden on 5 Nov 2010, 6:49 a.m., in response to message #1 by Jaime Morales I have a pretty new 35s and unless I position it so a light is reflecting directly off the screen, I can read it just fine, much better than my 50g. Have you adjusted the contrast? Hold down the ON key and the + and - keys to adjust it. Dave

Re: HP-35s current production line question Message #3 Posted by Tom Mathes on 5 Nov 2010, 10:24 a.m., in response to message #2 by David Hayden Jaime means the plastic lens itself reflects so much it's difficult to see at nearly any angle and contrast isn't the issue. I have the same gripe with my 35s (also an early production run). The 35s has about the most reflective lens I've seen in any HP calc, definitely much worse than my 33s, 32SII, 41C or 48G.

Re: HP-35s current production line question Message #4 Posted by bill platt on 5 Nov 2010, 12:13 p.m., in response to message #1 by Jaime Morales I bought an anti-reflective film for my new laptops. (New laptops are as useless as _______the screens are so reflective!) This aftermarket film works GREAT! NuShield DayVue is what I use, and it really does work outside. Without the film, I cannot use my laptops at all outside. They also make an indoor film, which I have not tried but it might work well for you. I called them and they were very helpful. www.nushield.com One does have to wonder why we need aftermarket products to able to use our equipment, but that's they way it is...like going to toys r us to buy baby carseats... Actually, HP should license the technology and put it on all their calcs... Edited: 5 Nov 2010, 12:14 p.m.

Re: HP-35s current production line question Message #5 Posted by uhmgawa on 5 Nov 2010, 5:15 p.m., in response to message #4 by bill platt Quote: I bought an anti-reflective film for my new laptops. (New laptops are as useless as _______the screens are so reflective!) This aftermarket film works GREAT! Matte films for GPS units, digicams, etc.. can be found where such are sold and are relatively cheap. The only possible drawback is it will reduce contrast somewhat and the 35c matrix lcd doesn't have much of a budget surplus here at least to my eyes. Quote: Actually, HP should license the technology and put it on all their calcs... It is fairly common for the top polarizer of an lcd to have some glare reduction. Unsure why that wasn't the case for the 35c. Although IIRC there is an outer window above the lcd in the 35c which is what needs this treatment. One could toss that and mount the adhesive matte film directly to the display.

Re: HP-35s current production line question Message #6 Posted by bill platt on 5 Nov 2010, 6:55 p.m., in response to message #5 by uhmgawa The film I bought is not a "matte film." In fact it is somewhat glossy--but anti-reflective. It is much much more effective than a matte film. It actually works in bright light, because it does not scatter, it cancels reflections.

Re: HP-35s current production line question Message #7 Posted by Jaime Morales on 17 Nov 2010, 12:43 p.m., in response to message #1 by Jaime Morales I went ahead and opened my HP-35s and removed the plastic window that is in front of the LCD. The glare was way too much for me and I'm willing to live with whatever risks are associated with the plastic cover being removed. However, it looks as though I could replace it with something less reflective (cut to size) if I wanted to, but I am happy with the present results. Edited: 17 Nov 2010, 12:47 p.m.

Re: HP-35s current production line question Message #8 Posted by uhmgawa on 17 Nov 2010, 2:58 p.m., in response to message #7 by Jaime Morales Quote: I went ahead and opened my HP-35s and removed the plastic window that is in front of the LCD. The glare was way too much for me and I'm willing to live with whatever risks are associated with the plastic cover being removed. The risk being scratching of the top polarizer. It certainly can be replaced but it is a bit of a pain to find a replacement and get it laminated to the glass without trapping dust in the lamination. I'd just get an inexpensive camera/GPS screen anti-glare shield and cut a section sized to replace that gawd awful original window.

Re: HP-35s current production line question Message #9 Posted by Jaime Morales on 18 Nov 2010, 4:43 p.m., in response to message #8 by uhmgawa I agree, the plastic polarizing overlay is a bit fragile. I went ahead and put an anti-reflective overlay directly onto it. I used a spare sheet of AR film meant for an iPod and cut it to size. With the plastic LCD cover removed, it now looks great...NO GLARE and good contrast!!!

Re: HP-35s current production line question Message #10 Posted by uhmgawa on 18 Nov 2010, 5:24 p.m., in response to message #9 by Jaime Morales Quote: I agree, the plastic polarizing overlay is a bit fragile. I went ahead and put an anti-reflective overlay directly onto it. I used a spare sheet of AR film meant for an iPod and cut it to size. With the plastic LCD cover removed, it now looks great...NO GLARE and good contrast!!! Forgot to mention.. if you were to replace the upper polarizer, you could rotate it 90* to the achieve the inverse effect of white-text on a black-background. Just in case anyone may be into customization.

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