What is claimed is:
1. A mechanism for enabling secure information transfer in a network, comprising:
i. a server for processing and serving user requests in a network; and
ii. a dedicated server component for processing and serving user requests from said server, such that said dedicated server is a special-function server.
2. The mechanism of claim 1, further comprising a program for transferring requests from said server to said dedicated Server.
3. The mechanism of claim 1, further comprising a network, for connecting a plurality of client computers to said server, for the purpose of transferring data between said server and said client computers in said network.
4. The mechanism of claim 1, wherein said special-function server is a single-function server.
5. The mechanism of claim 4, wherein said single-function server is an e-commerce transaction server.
6. A method for securing e-commerce transactions, comprising:
i. writing a server to execute at least one specific function;
ii. processing at least one request for said at least one specific function;
iii. in the case where said at least one request is for at least one alternative function, denying said at least one request.
7. A method for securing e-commerce transactions, comprising:
i. writing a server for processing at least one specific e-commerce transaction;
ii. processing at least one request for at least one specific e-commerce transaction;
iii. in the case where said at least one request is for at least one alternative function, denying said request.
The claims below are in addition to those above.
All refrences to claim(s) which appear below refer to the numbering after this setence.
What is claimed is:
1. A wide-angle lens system comprising a negative first lens group, a positive second lens group, a diaphragm, and a positive third lens group, in this order from an object;
wherein upon focusing, said positive second lens group moves along the optical axis direction; and
wherein said negative first lens group comprises at least one negative lens element having an aspherical concave surface facing toward an image, and said aspherical surface satisfies the following condition:
1.0<X1f<3.0
wherein
X1 designates the distance between said aspherical surface on the optical axis to said diaphragm, and
f designates the focal length of the entire wide-angle lens system at an infinite photographing distance.
2. The wide-angle lens system according to claim 1, wherein said aspherical surface formed on said concave surface of said negative lens element is formed so that (i) the radius of curvature of said aspherical surface increases as an increase of a height from the optical axis, and (ii) satisfies the following condition:
0.20<(Xf)*(N1)<0.01
wherein
X designates the amount of asphericity at a height Y (Y0.33*(X1)), and
N designates the refractive index of a lens material of said lens element on which said aspherical lens surface is formed.