home *** CD-ROM | disk | FTP | other *** search
- Newsgroups: rec.autos
- Path: sparky!uunet!noc.near.net!news.Brown.EDU!qt.cs.utexas.edu!yale.edu!think.com!sdd.hp.com!spool.mu.edu!wupost!cs.utexas.edu!csc.ti.com!tilde.csc.ti.com!cauldron!epcot!serafin
- From: serafin@epcot.spdc.ti.com (Mike Serafin)
- Subject: Re: LIDAR Demo on TV
- Message-ID: <1992Nov16.154313.16618@spdc.ti.com>
- Sender: usenet@spdc.ti.com (USENET News System)
- Nntp-Posting-Host: epcot
- Organization: TI Semiconductor Process and Design Center
- References: <1992Nov12.182532@usho21.hou281.chevron.com> <1992Nov13.221829.27760@julian.uwo.ca>
- Date: Mon, 16 Nov 1992 15:43:13 GMT
- Lines: 18
-
- In article <1992Nov13.221829.27760@julian.uwo.ca> wlsmith@valve.heart.rri.uwo.ca (Wayne Smith) writes:
- >
- >Is the dot actually hitting the car? Is the dot used for aiming, with
- >the real beam coming from a more powerful IR laser source? So I guess they
- >shoot 2 beams at you? How can they see the dot at 100 yards (a scope?)
- >
- >How are they using these Lidars on the highway (like in the usual stake-out
- >positions; under overpasses, etc).
- >
- >I read that night-vision goggles are real good at picking up IR sources...
- >And their getting cheap too.
-
- The aiming dot is projected onto the display. It is the equivalent of
- crosshairs on a rifle scope. It just gives better readability in low light
- situations. It is probably something like the Aimpoint rifle scopes. It seems
- to me that another reason for the necessity of waiting for the target to be
- close is the fact that when sighted through the scope there will be some fixed
- distance where the laser actually converges with the sighted point.
-