NEW projector from INDIA

[god2007]

Originally Posted by keimjay

Shiva


BTW, your heat problem is due to your reflector. Try removing the reflector and you will get better pic, and lesser heat. Check if your bulb is in centre line with your fresnel lens that is important to give enough brightness

Put the bulb on the exact focus of the reflector so as to get a parellel beam. Best test is in the night, to place an ordinary bulb in front of the reflector and try to get a good beam like the headlight of a car. When the bulb is at the focus, you will definetly get a beam. Note the position and distance and place the light emitting point of the MH at this point.

Even a slight deviation from the center line of the fresnel will dramatically decrease the brightness.

[god2007]

Hi friends, I have a doubt on usefulness of a reflector. Many of us are using a reflector to maximise the light out put and a fresnel to make the light parellel. The fresnel requires a point light source and we are placing the light at the focal point of the fresnel.
On the other hand a reflector is used to maximise the light by reflecting the light back. If the light source is placed at the focal point of the reflector it also make the light a beam which falls on the fresnel over an area, not as a pointed light source. Then how the fresnel accomodate the light from the reflector?. Or am I missing some thing ?

[keimjay]

hi shivela
can you send some monitor photos. especially the small pcb part which is attached to the LCD.

[akhilkumarcs92]

HEI good 2007 were is ur exact location am also frm kerala
give me ur ph no am also searching for a good quality lcd monitor

[god2007]

Originally Posted by akhilkumarcs92

HEI good 2007 were is ur exact location am also frm kerala
give me ur ph no am also searching for a good quality lcd monitor

I am from Cochin. Infact all the monitors 15 inch or above size are good. But some may have the cable issue. Due to the distance problem I am looking for smaller LCDs. ( ideally 10 inch ).

[akhilkumarcs92]

ya mee too ,yesterday i googled for 7" lcd monitor in thrissur local market
but they told they dont have a monitor such as hd quality only they have chepst one
around 2500k . can we make the pj together ?

[god2007]

Originally Posted by akhilkumarcs92

ya mee too ,yesterday i googled for 7" lcd monitor in thrissur local market
but they told they dont have a monitor such as hd quality only they have chepst one
around 2500k . can we make the pj together ?

See yourself some TV on it using the AV in. If the pixels are seen it is of low reso and is useless. Try some car TVs. I was lucky to find a super brand one with toshiba panel, bought from a duty paid shop for Rs. 2700/- I do not know the exact resolution( no details on the box or in the manual), but the projected image of 70-80 inch is not that bad. However I am still on the look out for a better panel.

Do not believe on the resolutions printed on the boxes unless it is of some good brand. Always try to see some video on it.

[lovekesh2]

Dear Budhi
I am From chandigarh. I got 9.8 Portable DVD with LCD, One 3 mm Magnifier sheet (A4 size).

Lamp with reflector and two condenssor lenses containing a fan below the lamp for cooling the lamp. The projection 3let lens i don't know about its focal length. I got all these things from a slide Projector.

Can i make it with one Magnifying sheet ???
what distance shall i keep to get an image.
I tried it in the moser bare DVD spindle box (which contains 6 spindles of 100 dvds).
but the image shows in round on the wall.

Thanks in advance.

[keimjay]

lovekesh
i think you are using wrong side of fresnel lens. grooved side should be in the LCD side.

[lovekesh2]

Thanks Keimjay
but one thing can i make projector with one Fresnel Lens?
Is it good to protect LCD ???