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Old 20th January 2010, 09:48 AM   #961
diyAudio Member
 
Join Date: Feb 2004
Location: bangalore
Hi guys, i just received the Fresnel lens from lensel. I was able to get a decent image using a 60W incandesent bulb, a transperency sheet [between fresnels] and a magnifier. I still haven't found any source for triplet lens apart from optics allied. Please let me know if there's another source in india.

Also i got the meniscus lens from lensel, could anyone tell me how good these lens will be for projection?

Thanks
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Old 21st January 2010, 03:08 PM   #962
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Join Date: Nov 2009
Does anyone know the procedure to calculate the focal lenth of all the lens in Focus lens set or quatraple lens ?
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Old 22nd January 2010, 07:24 AM   #963
sskctx is offline sskctx  India
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Join Date: Jan 2010
Smile DIY projector

Hi PCADDICT,

I had recently joined the forum and I came to know u r from chennai.
How about your projector project?
Did u get the desired result?

I am also from Chennai, Mogappair.
If u permit i will come & meet u to get some tech. guidance.
Can i get ur contact no.
my contact mail sskctx@gmail.com

regards

sskctx

Quote:
Originally Posted by pcaddict View Post
Hi,
I am frm chennai.

I got cheated for 7" LCD TV for 5K here in Chennai.

Where did you get the 8"car mount LCD (for 3.5K).

can you give me the specifications????

I am going to strip it off tomorrow....GOD only knows what is going to happen for my 7" TV.

k...
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Old 29th January 2010, 12:25 PM   #964
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Join Date: Nov 2006
hey guys,

i am back as you people know that i have already made a projector but i am not satisfy with my projector because lot of consuption of electricity last month my electricity bill is about Rs.12000/- i am using osram MH 400watt. but now in this forum some of people are talking about LED. I want know about LED BULB every thing. any one in this forum help me ?

Last edited by harish_pal; 29th January 2010 at 12:31 PM.
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Old 8th February 2010, 11:15 AM   #965
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Join Date: Feb 2010
@ aramosfet:

Did you start with your PJ?

How is the quality of Fresnels you ordered from LENSEL?

If your PJ is ready..why don't you try with CFL?(Sorry if we can't)

I got one triplet today from optics and allied(whitefield). still searching for a LCD 15'. Which LCD you are using?

@ Anyone else in this forum, Please help me with the light source as LED.If any one got satisfying results with LED/CFL as light sourceplease share.
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Old 9th February 2010, 01:00 AM   #966
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Join Date: Feb 2004
Location: bangalore
Quote:
Originally Posted by bishnu.bhatta View Post
@ aramosfet:

Did you start with your PJ?

How is the quality of Fresnels you ordered from LENSEL?

If your PJ is ready..why don't you try with CFL?(Sorry if we can't)

I got one triplet today from optics and allied(whitefield). still searching for a LCD 15'. Which LCD you are using?

@ Anyone else in this forum, Please help me with the light source as LED.If any one got satisfying results with LED/CFL as light sourceplease share.
I'm yet to start building the box. I'm planning to start this weekend. I have all the part required except the triplet. I'm using a 17" samsung lcd donated by my cousin. can you give details about the triplet u got from optics allied? how much did u pay?

The fresnels from lensel is good. but will get a better idea when i use them with the lcd panel.
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Old 9th February 2010, 07:01 AM   #967
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Quote:
Originally Posted by aramosfet View Post
I'm yet to start building the box. I'm planning to start this weekend. I have all the part required except the triplet. I'm using a 17" samsung lcd donated by my cousin. can you give details about the triplet u got from optics allied? how much did u pay?

The fresnels from lensel is good. but will get a better idea when i use them with the lcd panel.
I paid 1600 for the triplet after having a negotiation over the base price of 1800..Hurry up till stock ends... I know it is a bit high..The reason for buying from them is: Universal Optics(Uttarakhand) charges 3500,Lensel don't manufacture those.They stock triplet with focal length 317mm only.They manufacture it for OHP.

I am yet to buy the Fresnels lenses ( any reference in bangalore other than Optics and Allied?????).Lensel said they will take atleast 15 days for it.
How about the box design? Do you have any compact design in mind?I have collected some designs(without reflecting mirror)

Are you done with stripping off of the LCD?

I have PM you my cell number...If possible call me to discuss.
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Old 9th February 2010, 03:50 PM   #968
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Join Date: Feb 2004
Location: bangalore
Quote:
Originally Posted by bishnu.bhatta View Post
I paid 1600 for the triplet after having a negotiation over the base price of 1800..Hurry up till stock ends... I know it is a bit high..The reason for buying from them is: Universal Optics(Uttarakhand) charges 3500,Lensel don't manufacture those.They stock triplet with focal length 317mm only.They manufacture it for OHP.

I am yet to buy the Fresnels lenses ( any reference in bangalore other than Optics and Allied?????).Lensel said they will take atleast 15 days for it.
How about the box design? Do you have any compact design in mind?I have collected some designs(without reflecting mirror)

Are you done with stripping off of the LCD?

I have PM you my cell number...If possible call me to discuss.
I'm still unsure about the box design... i'm thinking of a wooden frame then use either sheet metal or plywood for the side. i'm not very good at carpentry. I haven't decided whether to get it done from a carpenter or do it myself. yes i've stripped the lcd. and kept it aside until the final box is complete.
not sure where else we can find fresnels in bangalore. but i'm planning to get them from 3Dlens later since the lcd i have is bigger than the fresnel that we can get in india. Which lamp have to got? can you share the box designs your looking at?
I'll call you some time this weekend?

why hurry for the triplets? do they have only limited stocks? BTW lensel sent me a mail last week asking me if i wanted triplet. apparently they're doing a batch of triplets in a few weeks. they quoted a price of Rs1850/- + tax and shipping.
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Old 10th February 2010, 06:06 AM   #969
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Join Date: Feb 2010
Quote:
Originally Posted by aramosfet View Post
I'm still unsure about the box design... i'm thinking of a wooden frame then use either sheet metal or plywood for the side. i'm not very good at carpentry. I haven't decided whether to get it done from a carpenter or do it myself. yes i've stripped the lcd. and kept it aside until the final box is complete.
not sure where else we can find fresnels in bangalore. but i'm planning to get them from 3Dlens later since the lcd i have is bigger than the fresnel that we can get in india. Which lamp have to got? can you share the box designs your looking at?
I'll call you some time this weekend?

why hurry for the triplets? do they have only limited stocks? BTW lensel sent me a mail last week asking me if i wanted triplet. apparently they're doing a batch of triplets in a few weeks. they quoted a price of Rs1850/- + tax and shipping.
Even when I asked Lensel about the triplets they told that they have stopped its production..but for an order of 50 or more triplets,they can run a batch.I donot suggest waiting for them and getting it at a higher price(1850+12.5% tax+ 250 shipping).toomuch..better you go to Optics and allied and get one.Yes, Lingaraju(Mkting mgr) of optics and allied told me that they have limited stocks.in fact, at optics and allied,you can order for your fresnel(it might cost you a bit...but no harm discussing it with him).Ordering from 3dlens is a risk as the items you are ordering are fragile..can even crack due to improper handling..even if those are insured, you have to wait for some more time(again customs hassles).

Regarding box design, I am planning to approach a carpenter as our design won't be flashy and presentable to others.besides, they will have all the tools.Can't we both together first approach a carpenter, discuss with him about the design, get one PJ box done??? and depending one the flaws in that box, we can design the second one....If you donot have the materials ready, I invite you to join me.

I havn't bought any bulb till now as I wanted to reduce the power consuption as much as possible...may be in between if we get some good news about LED as light source or may be someother energy efficient light source, i can go for it...otherwise i am planning to use a 150-200(max) Watt Osram MH...again I would need your help for getting that in bangalore.

Will discuss in detail with you over the weekend
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Old 10th February 2010, 02:51 PM   #970
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Join Date: Feb 2010
I am also planning to build a pj. I am having difficulties procuring the materials needed. if someone can help me out, that will be great. I am put up in mumbai.

The allied optics bangalore, got back to me with the following for triplet

Triplet Lens 1,800.00
Packing Charges 50.00
Excise Duty @ 8% 148.00
Edu. Cess @ 3% on E.D. 4.44
VAT 12.5% 250.31
Forwarding Charges 150.00

if u guys tell me if its fine, then I shall go ahead with the buy
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