Beam splitting: Dichroic mirrors can be used for beam splitting, directing light of certain wavelengths along one path while allowing light of different wavelengths to follow another path.

What a bizarre, defeatist PR position. They might as well spill the whole story of how it came to be then. Selling trinkets for a few bucks is hard to survive in Van Nuys….

I didn’t get the email announcing this!! I would have bought a bunch of stuff before they went away forever. For instance, those little rotary 5 position switches (that they apparently had a million of) were on my list to buy on my next order. This stings a bit.

Reflection and transmission bands: The design of a dichroic mirror results in distinct bands for reflection and transmission. For example, a dichroic mirror might reflect shorter wavelengths (e.g., blue or green) and transmit longer wavelengths (e.g., red or infrared).

I’m definitely going to miss them. They used have a second loaction in DTLA. I’ve been going there for 20 yrs. I still shop there, I was actually just there 2 days ago & a couple weeks ago. With them gone, now there will be no local surplus stores that sells the type of stuff they had which is sad. There’s Apex but they’re a totally different type of surplus store. A few of the guys there have a plan though & I really hope it works out for them, for their sake & ours.

Mjp electronics

That sux! All the best places to go to build stuff are going away. GEMOLITE, FOAMED PLASTICS, KIT KRAFT, CONTINENTAL GRAPHICS, ALLIED TRAINS, BERGER BEADS, MOSKITELLS, FRYES, among others.

Lots of fond memories skimming through and buying parts from their catalogs…. Especially when I was back in school decades ago, and constantly tinkering with electro-mechanical things. Sad to see them finally go… though I think the writing has been on the wall for a very long time.

As many have commented, I grew up taking for granted places like All – anyone remember PolyPaks ? Or Lafayette Electronics (I’m in NYC). Up until the early 70’s there was a wonder of retail places in downtown Manhattan (“Radio Row”) selling this sort of thing, and WW2 surplus electronics. It was so fun browsing – you never knew what you’d find…often sold by the pound ! I still have some of what I picked up.

Sad to see them go but the owner must have retired or passed. I’ve been buying electronic parts from them since the 1970’s, away from the big parts stores like Mouser, Newark, Digi-Key, and now Amazon. They and Jameco were my go to.

Buy Ring Stretcher/Reducer w/ Sizes 1-15 online from PMC Supplies. See our other products.

Multilayer coating: Dichroic mirrors typically consist of multiple layers of dielectric materials with different refractive indices. The thickness and arrangement of these layers are carefully engineered to create constructive or destructive interference for specific wavelengths.

One common type of aberration is chromatic aberration, which is related to color. Since the index of refraction of lenses depends on color or wavelength, images ...

Allelectronics corporation

Focal length definition: the distance from a focal point of a lens or mirror to the corresponding principal plane. Symbol. See examples of FOCAL LENGTH used ...

Futurlec

In the early 2000’s shortly after I got into amateur radio I ordered a bit from them as they were one of the easier options available once you wanted more variety than was available from radio-shack. I remember them as having a decent if slightly odd selection of surplus parts and inexpensive new electronics parts. The reasonably sized catalog was a pretty good source back when websites seldom offered online shopping options. Back then Digikey and Mouser Electronics had much smaller offerings and much more difficult catalogs to sift though. I assume that the supply surplus electronics has probably slowed to a trickle as less and less is manufactured here. Along with so many more options for low cost electronic parts (Amazon, Ebay, ECT…) that making a profit in that market would be difficult.

by ET Rolls · 2016 · Cited by 191 — Epub 2016 May 12. Author. Edmund T Rolls. Affiliation. 1 Oxford Centre for Computational ... Electronic address: Edmund.Rolls@oxcns.org. PMID: 27181908; DOI: 10.1016/j.neubiorev.2016.05.007 ...

Beam combining: In some setups, dichroic mirrors are used to combine multiple beams of light into a single path. This is common in applications such as confocal microscopy and laser systems.

Old guys i.e. boomers such as me are likely the largest demographic that still are interested in this. From the 1970’s to the mid 90’s there was such a demand and interest with electronics of this nature. However those days are very much long gone and are never returning.

Wavelength selectivity: Dichroic mirrors exhibit wavelength-selective behavior, reflecting light in one wavelength range while transmitting light in another wavelength range. This property is achieved through the use of interference coatings that exploit the interference of light waves.

My millennial self still orders occasionally from places like this. I’ve known of all electronics for years, but nothing stood out to me about them. I tend to shop goldmine electronics. They tend to have more of the NOS/odd parts I can come up with a use for at reasonable prices.

Quartz Lyot Depolarizer. This achromatic depolarizer consists of two synthetic crystal quartz plates assembled with their optic axes lying in the plane of the ...

Active Surplus, BG Micro and now All Electronics. Who’s next? Jameco? Very sad, but I can see how the market has changed.

Searched that site for a while and in my opinion, with the high cost of shipping virtually nothing on that website you can get elsewhere for roughly either the same price or maybe somewhat cheaper. Look I am all for supporting small family owned businesses and businesses that aren’t corporations. Heck I even go out of my way if I can to support several I know because they aren’t part of a chain.

You are probably correct. Might have been a family run business. The founder (s) 56 years ago may have passed on or retired. The next generations may not be as keen on the business and think that the building and property (if they own it) is where the real money is.

Electronicparts Surplus Ltd

IF you can even get a raspberry pi kit. Most places are on backorder through 2024-25. Or on ebay for 4x’s retail pricing.

All Electronics is an electronics discount store. They carry surplus parts and misc supplies, such as switches, wiring, LED modules, and more.

Microscope Field of View · the distance between the objective and the specimen · the magnification of the objective lens · the size of the camera sensor or ...

Really, I do think the killer is how expensive shipping is, especially in conjunction with the direct-from-China availability of so many things (and the subsidized shipping through USPS making that even more exaggerated).

I got my start in a sort of family business that now has no connection to any of mine. None of the generations that have come after me and my contemporaries had any interest in making their livings in the building trades – so my family – including me slowly – divested ourselves. The difference – perhaps – is that the old businesses, that I was associated with are continuing under a somewhat different set of owners.

I do remember some of their electronic connectors being really poor quality. I got a batch of 20 PL-259 connectors that had the softest plastic insulator and only 2 holes to solder the shield instead of the normal 4 holes. Those were a absolute PITA to install without turning the whole thing into a puddle of molten plastic. I did succeed and used all of them up, but learned a good lesson about spending a bit more for better quality.

Electronicgoldmine

As a teen I used to shop these places to build all sorts of projects in magazines like Popular Electronics. That experience encouraged me to get my undergrad degree in electrical engineering. At the university we did build some things in our lab classes, but most of our time was focused on theory. Advance a few decades forward and a person can buy a fairly advanced raspberry pi kit for less than $50 and do everything in software. The market is really shrinking for a lot of these component parts retailers.

Jameco Electronics

I first learned of the company years ago, probably through a magazine ad, and fondly remember going through their slim booklet-style catalogs.

The group Free-Space Optical Systems (FSO) offers expertise and solutions for wireless high-speed point-to-point links. Our laser-based systems cover ...

Although there are many avenues to purchase such items, online shopping has emerged as a popular option for many consumers. Amidst the abundance of online ...

Sad. My dad and I used to peruse their catalogs 30-40 years ago for hard-to-find, discrete components for whatever hobbyist projects we were working on at the time. There were several “mail order” businesses like All Electronics back then; most have probably faded into the sunset.

Fluorescence microscopy: Dichroic mirrors are commonly used in fluorescence microscopy setups to separate excitation light from emitted fluorescence. They enable the use of different filter sets for excitation and emission channels.

Tayda Electronics

A dichroic mirror, also known as a dichroic beamsplitter or interference filter beamsplitter, is an optical device that selectively reflects or transmits light based on its wavelength. Dichroic mirrors are designed to separate different colors of light by reflecting one range of wavelengths while allowing another range to pass through. These mirrors are commonly used in various optical systems, including microscopy, fluorescence microscopy, and laser applications.

I spent much of my youth in the late ’70s and early ’80s hacking together all sorts of electronic gizmos. When I wasn’t skateboarding or doing homework, I was at my desk with a soldering iron and bins of parts from All Electronics and Radio Shack.

Multicolor imaging: Dichroic mirrors play a crucial role in multicolor imaging systems, where different wavelength ranges need to be directed to specific detectors or cameras.

The actual range of resolvable frequencies of a smaller aperture is in proportion to the aperture reduction factor. In terms of MTF, CTF is given as CTF=(4/π)[ ...

When I read the headline I momentarily thought a big EMP blast had hit the USA. But then realized my iPhone wouldn’t be working to read the headline if hat was so.

Interference coatings: The reflective and transmissive properties of dichroic mirrors are determined by thin-film interference coatings. These coatings are designed to enhance or suppress specific wavelengths of light based on the thickness and refractive index of the coating layers.

Laser systems: In laser applications, dichroic mirrors are employed to combine or separate laser beams of different wavelengths. They are also used in laser scanning systems and laser light shows.

Angle of incidence: The performance of dichroic mirrors can be sensitive to the angle of incidence of the incoming light. Some dichroic mirrors are designed for specific angles of incidence to optimize their performance.

Lee'selectroniccomponents

Spectroscopy: In spectroscopic instruments, dichroic mirrors are used to separate or combine light of different wavelengths, facilitating the analysis of specific spectral bands.

It is the end of an era. I remember ordering stuff from them way back. I enjoyed their catalogs and browsing their website. They kind of remind me of American Science & Surplus ( sciplus.com ) and Surpluss Shed ( surplusshed.com ) for optics. With those surplus stores you never knew what random item you might come across. Hopefully the latter ones stick around a little longer.

We had a great run and much if not nearly the vast majority sadly of remaining manufacturers of these products aren’t made domestically anymore and haven’t been in decades in many cases. Sure there is a need for skilled labor and I’ve been saying that since the 70’s yet automation and innovation have made this a relic of the past.

That said I am old enough to come to terms with the hard reality that this type of business is a relic of the past. This isn’t me being harsh but the blunt reality. Think of the youth of today; with exceptions of course most aren’t interested in the analog or “old school” technology.

Browsing All Electronics is kind of like going through a tinkerer’s spare and harvested parts rack. They’ve got a bunch of useful stuff for prototyping with, but I’d never buy parts or components to spec from there.

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