Ok, Jostein, when I said that the light has to strick at an oblique angle, I meant that it has to happen that this case will exist on the film plane. I did not mean that the perpendicular case doesn't work. Did you really think I was saying that the perpendicular case doesn't work, or are you just being a twit.
Regards, Bob... -------------------------------------------- "Do not suppose that abuses are eliminated by destroying the object which is abused. Men can go wrong with wine and women. Shall we then prohibit and abolish women?" -Martin Luther ----- Original Message ----- From: "Jostein" <[EMAIL PROTECTED]> To: <[EMAIL PROTECTED]> Sent: Saturday, August 09, 2003 11:25 AM Subject: Re: CCD light path angle redux > If light *has* to strike the sensor at an oblique angle, it would logically > follow that the chip has a blind spot at the center. So this cannot be > right, Bob. > > cheers, > Jostein > > ----------------------------- > Pictures at: http://oksne.net > ----------------------------- > ----- Original Message ----- > From: "Bob Blakely" <[EMAIL PROTECTED]> > To: <[EMAIL PROTECTED]> > Sent: Saturday, August 09, 2003 7:05 PM > Subject: Re: CCD light path angle redux > > > > From: "Mark Erickson" <[EMAIL PROTECTED]> > > > > > It should be fairly clear from the figure at the bottom that light > > striking > > > the CCD perpendicular to the array gets focused on the sensor. What is > > not > > > shown is that light striking at an oblique angle will get focused > adjacent > > > to the sensor, not on it. > > > > This has to be baloney. Light *has* to strike the sensor at an oblique > angle > > or an image will not be formed! Only light along the axis of the lens will > > be perpendicular to the array, and of this light, only the ray on axis > will > > be perpendicular. Of the rays forming a dot on the array along the lens > > axis, even light from the edges of the aperture will be somewhat oblique. > > Now, the question is: > > > > What oblique angle is acceptable to the array? > > > > This cannot be determined from the inaccurate cartoon provided. > > > > Regards, > > Bob... > > -------------------------------------------- > > "Do not suppose that abuses are eliminated by destroying > > the object which is abused. Men can go wrong with wine > > and women. Shall we then prohibit and abolish women?" > > -Martin Luther > > > > > > >
