[telescoperos] Re: Material K4
- From: "Luis Alberto Rojas Kramer" <lrojask@xxxxxxxxx>
- To: <telescoperos@xxxxxxxxxxxxx>
- Date: Mon, 7 Jun 2010 15:48:58 -0500
Hola otra vez?
Oigan, alguien sabe bien qué es eso del CDGM por el que dice estar soportado
ese material K4?..
Encontré en esta página una clasificación de materiales con otras siglas,
pero no hay mucha info al respecto en la red.
http://www.dayoptics.com/downloads/Optical%20Glass.pdf
Por otro lado, aprovecho para preguntar. Cuál es la diferencia entre un
vidrio y un cristal?..
Saludos
LARK
From: telescoperos-bounce@xxxxxxxxxxxxx
[mailto:telescoperos-bounce@xxxxxxxxxxxxx] On Behalf Of Luis Alberto Rojas
Kramer
Sent: lunes, 07 de junio de 2010 01:20 p.m.
To: telescoperos@xxxxxxxxxxxxx
Subject: [telescoperos] Material K4
Hola Telescoperos
Aquí esta la URL de la empresa China que fabrica espejos con un material
llamado K4
http://www.intane-optics.com/products/product-primary-parabolic-mirror-pa.ht
ml
Les mando un forward de la nota que me enviaron respecto a mi solicitud de
precios y envíos así como una tabla de especificaciones del material. Se ve
bien, pero es carísimo.!
Saludos
LARK
From: Alice Xia [mailto:lihua.xia@xxxxxxxxxxxxxxxx]
Sent: jueves, 14 de enero de 2010 07:41 p.m.
To: lrojask
Subject: Re: QUOTE REQUEST
Dear Mr. Rojas,
Acknowledged that we have received your letter of Jan14th,Thank you very
much for your interests in our products.
We are pleased to offer for you as followings:
Diameter Inch / mm
Focal Ratio
glass
Unit Price
(EURO)
16? / 406
F4~F6
K4
5720
18? / 457
F4~F6
K4
7810
20? / 508
F4~F6
K4
9200
25? / 635
F4~F6
K4
12788
1. Primary mirrors are made of K4 (with low expansion) glass which is
supported by CDGM
2. 94% reflectivity for broadband visible light (from 400nm to
650nm).
3. Each mirror has a serial number, an Test report.
4. Items are shipped in a sturdy wooden box.
Shipping and handling charges are not included in price.
This offer is firm for 10 days.
Regarding the material of K4, please attached datasheet for your
information.
Please free feel to contact me,if you have any other questions.
Best wishes,
Alice
2010-01-15
_____
Alice Lihua Xia
Nanjing Intane Optical Engineering Co.,Ltd.
Tel: 86-25-85282549
Fax: 86-25-85282539
Email: lihua.xia@xxxxxxxxxxxxxxxx
Address: 4, Jiang Wang Miao Street Nanjing,
Jiangsu 210042,China
Web: http://www.intaneoptics.com
_____
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