What kind of optics are these?

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    Optics
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Discussion Overview

The discussion revolves around the identification of optical components purchased at a flea market, specifically whether they are dichroic lenses or filters, and their potential use with a HeNe laser. Participants explore the nature and characteristics of the items, including their possible applications in laser technology.

Discussion Character

  • Exploratory
  • Technical explanation
  • Debate/contested

Main Points Raised

  • One participant suggests that the items may be dichroic lenses, expressing uncertainty about their identification.
  • Another participant questions whether the items are filters and notes that the clear plastic might just be the cases.
  • A participant confirms that the clear plastic is indeed just the cases.
  • Drakkith proposes that the items are likely dichroic filters used in Nd-YAG lasers, providing a link to a similar product for reference.
  • Another participant mentions that the items are likely dielectric filters and provides additional context about the manufacturer, CVI, and its connection to Melles Griot.
  • There is a light-hearted comment regarding whether the purchase was a good deal, suggesting that it is subjective.

Areas of Agreement / Disagreement

Participants express differing views on the exact nature of the optical components, with some proposing they are dichroic filters while others suggest they could be dielectric filters. The discussion remains unresolved regarding the definitive identification of the items.

Contextual Notes

Participants rely on visual inspection and limited information from the printed labels, which may not provide a complete understanding of the items' properties or intended use. There is also uncertainty regarding the specific applications of the filters in laser technology.

BlueIntegral
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I got these for a couple dollars at an electronics flea market. They look like maybe some kind of dichroic lens, but I don't know. Can anyone help identify them? Did I get a good deal for a couple bucks?

Here's the first one. It's hard to tell from the picture, but it's got a slight red tint:
http://i.imgur.com/RvQFLh.jpg
The side has printed on it: 110-0006-RD CVI 211020

Here's one side of the next one:
http://i.imgur.com/1bUII.jpg
And the other side:
http://i.imgur.com/Mtovgh.jpg
The top of the case has a sticker that says
Continuum
Part No:
105-0022, Rev. F
S/N: 2213+2214

I don't know much about optics, but I have a HeNe laser and thought these might be fun to play with. I'd be much obliged to anyone who can help identify.
 
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Are they filters of some type? Is the clear plastic just the cases?
 
Yeah, those are just the cases I got them in.
 
BlueIntegral said:
I got these for a couple dollars at an electronics flea market. They look like maybe some kind of dichroic lens, but I don't know. Can anyone help identify them? Did I get a good deal for a couple bucks?

Here's the first one.
The side has printed on it: 110-0006-RD CVI 211020

Here's one side of the next one:

The top of the case has a sticker that says
Continuum
Part No:
105-0022, Rev. F
S/N: 2213+2214

I don't know much about optics, but I have a HeNe laser and thought these might be fun to play with. I'd be much obliged to anyone who can help identify.

They are likely dielectric filters- CVI is now part of Melles Griot, and they did a lot of optical coatings. An item similar to the last one turned up here:

http://www.bmius.com/p-31144-contin...-rev-a-dielectric-laser-mirror-1-damaged.aspx

Was it a good deal? I guess that depends on if you think it was a good deal or not :) Have fun!