ellipsoidal reflectors group-buy?

[18wheeler]

I have contacted a optics manufacurer that makes ellipsoidal reflectors. their price is about a quarter of the cheapest ones available in USA. it is about $18-20 after shipping, depanding the size of the reflector and how much shipping will cost. I am going to get a reflector to do some tests. If anyone is interested please contact me at liu DOT 316 AT osu DOT edu.

by the way, which one of following is better to get? I am going to try it on a CDM-T lamp, which is 19mm in diameter. I guess I can enlarge the center hole of T090 reflector to make it 1~2 mm wider.

HB1220-T080
D = 80mm d = 22mm H = 35mm F1 = 15mm F2 = 120mm

HB1220-T090
D = 90mm d = 18mm H = 53mm F1 = 14mm F2 = 165mm

An externally hosted image should be here but it was not working when we last tested it.

An externally hosted image should be here but it was not working when we last tested it.

for benefits of ellipsoidal reflector and CDM-T lamps, please see

Ace's posts.

 

[chooch]

I'm interested... email sent.

Gordon

 

[ace3000_1]

Heya 18, ill go for a HB1220-T080


Trev

 

[TaskMaster]

I emailed but got no reply.

 

[18wheeler]

I asked the manufacturer if they are willing to ship to US. I haven't got reply yet. if not, I have to ask my friend to buy and ship them to me.

 

[Me2!]

Me2!

I'll take a HB1220-T080 also. I would actually prefer the larger D but the bulb hole and longer f of this unit is better.

Any chance they could make a deep elliptical? I am testing a 2nd unit to collect radial light out the front (missing the reflector) but a long elliptical would be much better. I might have to polish up my telescope mirror making skills - pun intended.

 

[TaskMaster]

These are stock units that he is ordering from the manufacturer. I'm sure it would be quite expensive for a custom model.

 

[charlie10]

elliptical

Is this group-buy still in the works? If so, I'm also interested.

 

[TaskMaster]

It should be - shoot a message to 18wheeler.