Old 04-18-2017, 01:01 PM #1
Junior Member
 
Join Date: Apr 2017
Posts: 7
Rep Power: 0
ogog is on a distinguished road
ogog ogog is offline
Junior Member
 
Join Date: Apr 2017
Posts: 7
Rep Power: 0
ogog is on a distinguished road
Default Cone mirror 20 degrees.

If I feed a 20 degrees cone mirror tip with a laser, would I get a conical beam of 20 degrees ? I do not want to use rotational scanning to get a conical beam shape.

Bosch uses 45 degree ones for leveling applications.

Thanks.


ogog is offline   Reply With Quote










Old 04-18-2017, 01:40 PM #2
Class 3R Laser
 
Join Date: May 2011
Posts: 2,272
Rep Power: 11791
Encap has a reputation beyond reputeEncap has a reputation beyond reputeEncap has a reputation beyond reputeEncap has a reputation beyond reputeEncap has a reputation beyond reputeEncap has a reputation beyond reputeEncap has a reputation beyond reputeEncap has a reputation beyond reputeEncap has a reputation beyond reputeEncap has a reputation beyond reputeEncap has a reputation beyond repute
Encap Encap is offline
Class 3R Laser
 
Join Date: May 2011
Posts: 2,272
Rep Power: 11791
Encap has a reputation beyond reputeEncap has a reputation beyond reputeEncap has a reputation beyond reputeEncap has a reputation beyond reputeEncap has a reputation beyond reputeEncap has a reputation beyond reputeEncap has a reputation beyond reputeEncap has a reputation beyond reputeEncap has a reputation beyond reputeEncap has a reputation beyond reputeEncap has a reputation beyond repute
Default Re: Cone mirror 20 degrees.

Quote:
Originally Posted by ogog View Post
If I feed a 20 degrees cone mirror tip with a laser, would I get a conical beam of 20 degrees ? I do not want to use rotational scanning to get a conical beam shape.

Bosch uses 45 degree ones for leveling applications.

Thanks.
Ask the people that sell them see: https://www.edmundoptics.com/optics/.../cone-mirrors/"
From the web sitr:
"Ideal for 360° Applications---Multiple Diameters Available --Protected Aluminum Coating

TECHSPEC® Cone Mirrors are ideal for laser and imaging systems, and for applications requiring 360° illumination. The cone mirrors have a polished cone top and base, and a fine ground circumference."

Last edited by Encap; 04-18-2017 at 01:41 PM.
Encap is offline   Reply With Quote
Old 04-18-2017, 02:36 PM #3
Junior Member
 
Join Date: Apr 2017
Posts: 7
Rep Power: 0
ogog is on a distinguished road
ogog ogog is offline
Junior Member
 
Join Date: Apr 2017
Posts: 7
Rep Power: 0
ogog is on a distinguished road
Default Re: Cone mirror 20 degrees.

Thanks I did now. They suggested Axicon conical prisms.

I am trying to generate a continous conical beam of 20 degrees without rotational optics.

I thought I could do it with a cone mirror that has an angle of 20 degrees.
ogog is offline   Reply With Quote
Old 04-18-2017, 02:42 PM #4
diachi's Avatar
Class 4 Laser
 
Join Date: Feb 2008
Location: Yellowknife, NT, Canada
Posts: 7,614
Rep Power: 13138
diachi has a reputation beyond reputediachi has a reputation beyond reputediachi has a reputation beyond reputediachi has a reputation beyond reputediachi has a reputation beyond reputediachi has a reputation beyond reputediachi has a reputation beyond reputediachi has a reputation beyond reputediachi has a reputation beyond reputediachi has a reputation beyond reputediachi has a reputation beyond repute
Send a message via Skype™ to diachi
diachi diachi is online now
Class 4 Laser
diachi's Avatar
 
Join Date: Feb 2008
Location: Yellowknife, NT, Canada
Posts: 7,614
Rep Power: 13138
diachi has a reputation beyond reputediachi has a reputation beyond reputediachi has a reputation beyond reputediachi has a reputation beyond reputediachi has a reputation beyond reputediachi has a reputation beyond reputediachi has a reputation beyond reputediachi has a reputation beyond reputediachi has a reputation beyond reputediachi has a reputation beyond reputediachi has a reputation beyond repute
Send a message via Skype™ to diachi
Default Re: Cone mirror 20 degrees.

An Axicon would be a good choice of lens if you are aiming to produce a circle/conical beam.

https://www.edmundoptics.com/resourc...ok-at-axicons/

Edit: Looks like someone already suggested those to you.
__________________


445nm | Sanwu Laser Pocket Series | 400mW Metered
445nm | NDB7242E Pen Build | 60mW Metered | >>Build Thread<<
450nm | LaserPointerStore - Thor H2 | 1W(?) | Review Unit - Awaiting Arrival | >>LaserPointerStore Thread<<
488nm | Spectra Physics 163 Argon | ~30mW Metered
515nm | PL515 Pen Build | 50mW Metered | >>Build Thread<<
520nm | Laserlands 520 | 5mW | Review Unit | 3mW metered | >>Review<<
532nm | Gearbest 303 Pointer | 50mW Metered
532nm | Gearbest JD.850 Pointer | 30mW Metered (I think, need to re-test).
633nm | HeNe | 6mW
633nm | Spectra Physics 155 HeNe | <1mW >>Thread<<
650nm | Sanwu Laser Pocket Series | 200mW Metered
808nm | Melles Griot 532nm Lab Unit | No Crystals >10W | X2



Check out my Reddit Subreddit! >>/r/laserpointers<<


Last edited by diachi; 04-18-2017 at 02:43 PM.
diachi is online now   Reply With Quote
Old 04-18-2017, 02:52 PM #5
Junior Member
 
Join Date: Apr 2017
Posts: 7
Rep Power: 0
ogog is on a distinguished road
ogog ogog is offline
Junior Member
 
Join Date: Apr 2017
Posts: 7
Rep Power: 0
ogog is on a distinguished road
Default Re: Cone mirror 20 degrees.

Thanks. I still wonder why a cone mirror can not be used for that. I have searched the internet, could not find an implementation for that.
ogog is offline   Reply With Quote
Old 04-18-2017, 04:47 PM #6
Gadget's Avatar
Class 2 Laser
 
Join Date: Dec 2013
Location: Dallas, TX
Posts: 277
Rep Power: 1143
Gadget has a reputation beyond reputeGadget has a reputation beyond reputeGadget has a reputation beyond reputeGadget has a reputation beyond reputeGadget has a reputation beyond reputeGadget has a reputation beyond reputeGadget has a reputation beyond reputeGadget has a reputation beyond reputeGadget has a reputation beyond reputeGadget has a reputation beyond reputeGadget has a reputation beyond repute
Gadget Gadget is offline
Class 2 Laser
Gadget's Avatar
 
Join Date: Dec 2013
Location: Dallas, TX
Posts: 277
Rep Power: 1143
Gadget has a reputation beyond reputeGadget has a reputation beyond reputeGadget has a reputation beyond reputeGadget has a reputation beyond reputeGadget has a reputation beyond reputeGadget has a reputation beyond reputeGadget has a reputation beyond reputeGadget has a reputation beyond reputeGadget has a reputation beyond reputeGadget has a reputation beyond reputeGadget has a reputation beyond repute
Default Re: Cone mirror 20 degrees.

Quote:
Originally Posted by ogog View Post
Thanks. I still wonder why a cone mirror can not be used for that. I have searched the internet, could not find an implementation for that.

Think about it.
If you direct a single, stationary laser beam at a mirror, no matter what shape the mirror is, all you're going to get is a single beam reflecting off of that mirror at some angle. Shape of the mirror is not a factor in this scenario.
Making sense?
-G
__________________
Wave upon wave of Demented Avengers marched cheerfully out of obscurity into The Dream!



Before you get yourself in trouble, read this!

Some pen, gas, and borg-host lasers
Projector, controller, fogger
Radiant X4 LPM
Two Eagle Pair 190-540 & 900-1700 OD4+ 20% VLT
Gadget is offline   Reply With Quote
Old 04-18-2017, 05:20 PM #7
diachi's Avatar
Class 4 Laser
 
Join Date: Feb 2008
Location: Yellowknife, NT, Canada
Posts: 7,614
Rep Power: 13138
diachi has a reputation beyond reputediachi has a reputation beyond reputediachi has a reputation beyond reputediachi has a reputation beyond reputediachi has a reputation beyond reputediachi has a reputation beyond reputediachi has a reputation beyond reputediachi has a reputation beyond reputediachi has a reputation beyond reputediachi has a reputation beyond reputediachi has a reputation beyond repute
Send a message via Skype™ to diachi
diachi diachi is online now
Class 4 Laser
diachi's Avatar
 
Join Date: Feb 2008
Location: Yellowknife, NT, Canada
Posts: 7,614
Rep Power: 13138
diachi has a reputation beyond reputediachi has a reputation beyond reputediachi has a reputation beyond reputediachi has a reputation beyond reputediachi has a reputation beyond reputediachi has a reputation beyond reputediachi has a reputation beyond reputediachi has a reputation beyond reputediachi has a reputation beyond reputediachi has a reputation beyond reputediachi has a reputation beyond repute
Send a message via Skype™ to diachi
Default Re: Cone mirror 20 degrees.

Quote:
Originally Posted by Gadget View Post
Think about it.
If you direct a single, stationary laser beam at a mirror, no matter what shape the mirror is, all you're going to get is a single beam reflecting off of that mirror at some angle. Shape of the mirror is not a factor in this scenario.
Making sense?
-G

It is a factor with a non-flat mirror.

If the middle of your beam is aligned with the point of the reflective cone and is parallel you will get a cone reflected from the mirror, the angle of which depends on the angle of the mirrored cone.

Curved mirrors also have an effect, a "concave" mirror for example will focus the beam to a point, while a "convex" mirror will make the beam wider.

So yes, the shape of the mirror's surface is very important, anything but a flat mirror will result in changes to the shape of a beam.
__________________


445nm | Sanwu Laser Pocket Series | 400mW Metered
445nm | NDB7242E Pen Build | 60mW Metered | >>Build Thread<<
450nm | LaserPointerStore - Thor H2 | 1W(?) | Review Unit - Awaiting Arrival | >>LaserPointerStore Thread<<
488nm | Spectra Physics 163 Argon | ~30mW Metered
515nm | PL515 Pen Build | 50mW Metered | >>Build Thread<<
520nm | Laserlands 520 | 5mW | Review Unit | 3mW metered | >>Review<<
532nm | Gearbest 303 Pointer | 50mW Metered
532nm | Gearbest JD.850 Pointer | 30mW Metered (I think, need to re-test).
633nm | HeNe | 6mW
633nm | Spectra Physics 155 HeNe | <1mW >>Thread<<
650nm | Sanwu Laser Pocket Series | 200mW Metered
808nm | Melles Griot 532nm Lab Unit | No Crystals >10W | X2



Check out my Reddit Subreddit! >>/r/laserpointers<<


Last edited by diachi; 04-18-2017 at 05:21 PM.
diachi is online now   Reply With Quote
Old 04-18-2017, 09:29 PM #8
Junior Member
 
Join Date: Apr 2017
Posts: 7
Rep Power: 0
ogog is on a distinguished road
ogog ogog is offline
Junior Member
 
Join Date: Apr 2017
Posts: 7
Rep Power: 0
ogog is on a distinguished road
Default Re: Cone mirror 20 degrees.

I actually found one implementation with a cone mirror

http://opticalengineering.spiedigita...084002_1_1.png


This is a larger than 45 degrees mirror. If the mirror angle were less than 45 degrees, would the conical shape form on the opposite i.e away from the laser ?
ogog is offline   Reply With Quote
Old 04-18-2017, 09:32 PM #9
Junior Member
 
Join Date: Apr 2017
Posts: 7
Rep Power: 0
ogog is on a distinguished road
ogog ogog is offline
Junior Member
 
Join Date: Apr 2017
Posts: 7
Rep Power: 0
ogog is on a distinguished road
Default Re: Cone mirror 20 degrees.

This is the article:

Generation of hollow conic beams using a metal axicon mirror | Optical Engineering | SPIE
ogog is offline   Reply With Quote
Old 04-19-2017, 04:52 AM #10
paul1598419's Avatar
Class 3B Laser
 
Join Date: Sep 2013
Location: Washington State
Posts: 3,514
Rep Power: 12238
paul1598419 has a reputation beyond reputepaul1598419 has a reputation beyond reputepaul1598419 has a reputation beyond reputepaul1598419 has a reputation beyond reputepaul1598419 has a reputation beyond reputepaul1598419 has a reputation beyond reputepaul1598419 has a reputation beyond reputepaul1598419 has a reputation beyond reputepaul1598419 has a reputation beyond reputepaul1598419 has a reputation beyond reputepaul1598419 has a reputation beyond repute
paul1598419 paul1598419 is online now
Class 3B Laser
paul1598419's Avatar
 
Join Date: Sep 2013
Location: Washington State
Posts: 3,514
Rep Power: 12238
paul1598419 has a reputation beyond reputepaul1598419 has a reputation beyond reputepaul1598419 has a reputation beyond reputepaul1598419 has a reputation beyond reputepaul1598419 has a reputation beyond reputepaul1598419 has a reputation beyond reputepaul1598419 has a reputation beyond reputepaul1598419 has a reputation beyond reputepaul1598419 has a reputation beyond reputepaul1598419 has a reputation beyond reputepaul1598419 has a reputation beyond repute
Default Re: Cone mirror 20 degrees.

The article actually answered your question. But, to get a circular beam projected from a conical mirror you need a good Gaussian beam and have it parallel to the axis of the mirror, which would be done with a small flat mirror at 45 degrees with the beam coming in at 90 degrees.
__________________
405nm Laser Pointer 45mW
405nm C11 700mW
405nm Laser Shack Pointer 80mW
Thor H Dual Power 445nm, 438 mW & 1648 mW
445nm 1.75 watts SkyRay Gifted
445nm 3 watts MS-SSW-II
445nm 2.2 watts Nichia MS Envy

445nm 2 watt SMP Copper Host
488nm Uniphase #2201-20SLAT argon laser head and power supply >40mW
LSR532H-1W Laser, LSR-PS-N1 Driver, RS-75-5 P.S. 1300 mW
532nm 200mW thermostatically Fan Cooled (Besram) >230mW
532nm 189mW pocket lab laser
532nm lasers X6 100mW-200mW
532nm lasers X4 75mW- 140mW
632.8nm P210 New Laser Tube 0.57mW Melles Griot 05-LMP-827-037 PSU New
632.8nm Spectra- Physics He- Ne #102-2 4mW heads X2 and #236 power supply
632.8nm PMS He-Ne # 201P/ LPS-115 2mW
632.8nm Siemens HeNe LGK7630S 7.6mW
635nm 1 watt Cyprus II
635nm 1 watt SMP Copper host
635nm 5mW pointer
635nm 100mW pointer
650nm 65mW pointer
650nm 380mW 501B
808nm 1+W infrared laser
infrared video camera for collimating IR lasers
Ocean Optics USB2000 Spectrometer
Scientech Vector S310 with AC2500 10 Watt LPM
LaserBee II 3.2 Watt LPM
Radiant X4 3.7 Watt LPM
Eisco Scientific Spectroscope 400nm- 700nm
paul1598419 is online now   Reply With Quote
Old 04-19-2017, 09:43 AM #11
Junior Member
 
Join Date: Apr 2017
Posts: 7
Rep Power: 0
ogog is on a distinguished road
ogog ogog is offline
Junior Member
 
Join Date: Apr 2017
Posts: 7
Rep Power: 0
ogog is on a distinguished road
Default Re: Cone mirror 20 degrees.

Yes, partially. This is what I wonder if works or not:
ogog is offline   Reply With Quote
Old 04-19-2017, 09:45 AM #12
Junior Member
 
Join Date: Apr 2017
Posts: 7
Rep Power: 0
ogog is on a distinguished road
ogog ogog is offline
Junior Member
 
Join Date: Apr 2017
Posts: 7
Rep Power: 0
ogog is on a distinguished road
Default Re: Cone mirror 20 degrees.

https://drive.google.com/file/d/0Bxg...ew?usp=sharing
ogog is offline   Reply With Quote
Reply





Thread Tools
Display Modes

Posting Rules
You may not post new threads
You may not post replies
You may not post attachments
You may not edit your posts

BB code is On
Smilies are On
[IMG] code is On
HTML code is Off
Trackbacks are On
Pingbacks are On
Refbacks are On











Loading












Privacy Policy | Advertising Disclaimer | Terms of Use


 


All times are GMT. The time now is 01:38 PM.


Powered by: vBulletin
Copyright ©2000 - 2017, Jelsoft Enterprises Ltd.
Search Engine Friendly URLs by vBSEO
Privacy Policy | Advertising Disclaimer | Terms of Use
Copyright (C) 2017 Laser Pointer Forums, LLC