Anyhow, I filed an official complaint and have talked to NWO. I wasn't considering that you might be requiring quartz. Galvos that push k points have only become available in the last years. At the edge of this bar there would be a photodiode. Imagine that a small percentage of the bundle is scattered to open hardware fast high resolution laser networks reference mirror and most of it used to go to the sample. Helmchen, F. However, it remains a challenge to resolve activity at single dendritic spines in freely behaving animals.

Luminar currently has a good patent position in the US market and a very weak one in the European market. Luminar seems to have a monopoly on using laser sources between nm and repetition rates up to MHz. These have all been rejected due to lack of novelty. Personally, I think it is strange the US patents got accepted. There was already prior by Trimble , see my earlier post , this system also operates a wavelength of nm and has an even larger scanning range. It was announced at Intergeo in Low profile lidar scanner with polygon mirror: USB2 Patent which protects a certain embodiment which uses a rotating polygon mirror with a galvo mirror.

No patent seems to have been filed in Europe. In the version of this article initially published online, the affiliation for Aimin Wang was incorrectly listed as Department of Neurobiology, Institute of Basic Medical Sciences, Beijing, China. Niell, C. Live optical imaging of nervous system development. Alvarez, V. Anatomical and physiological plasticity of dendritic spines. Kerr, J. Imaging in vivo : watching the brain in action. Chen, C. Spatiotemporal dynamics of dendritic spines in the living brain.

Article Google Scholar. Aghajan, Z. Impaired spatial selectivity and intact phase precession in two-dimensional virtual reality. Minderer, M. Neuroscience: virtual reality explored. Nature , — Jercog, P. Large-scale fluorescence calcium-imaging Open Hardware Fast High Resolution Laser Network methods for studies of long-term memory in behaving mammals. Cold Spring Harb. Helmchen, F. A miniature head-mounted two-photon microscope: high-resolution brain imaging in freely moving animals.

Neuron 31 , — Fu, L. Double-clad photonic crystal fiber coupler for compact nonlinear optical microscopy imaging. Jung, W. Miniaturized probe based on a microelectromechanical system mirror for multiphoton microscopy. Piyawattanametha, W. In vivo brain imaging using a portable 2.

Rivera, D. Compact and flexible raster scanning multiphoton endoscope capable of imaging unstained tissue. USA , — Sawinski, J. Visually evoked activity in cortical cells imaged in freely moving animals. Zhang, Y. A compact fiber-optic SHG scanning endomicroscope and its application to visualize cervical remodeling during pregnancy. Ghosh, K. Miniaturized integration of a fluorescence microscope. Methods 8 , — Sofroniew, N. A large field of view two-photon mesoscope with subcellular resolution for in vivo imaging.

Distortion-free delivery of nanojoule femtosecond pulses from a Ti:sapphire laser through a hollow-core photonic crystal fiber. Drobizhev, M. Two-photon absorption properties of fluorescent proteins.

Chen, T. Ultrasensitive fluorescent proteins for imaging neuronal activity. Modulation of visual responses by behavioral state in mouse visual cortex. Neuron 65 , — Saleem, A. Integration of visual motion and locomotion in mouse visual cortex. Sekiguchi, K. Imaging large-scale cellular activity in spinal cord of freely behaving mice.

Hochbaum, D. All-optical electrophysiology in mammalian neurons using engineered microbial rhodopsins. Methods 11 , — Gong, Y. High-speed recording of neural spikes in awake mice and flies with a fluorescent voltage sensor. Science , — Prakash, R. Two-photon optogenetic toolbox for fast inhibition, excitation and bistable modulation. Methods 9 , — Rickgauer, J. Simultaneous cellular-resolution optical perturbation and imaging of place cell firing fields.

Functional imaging in freely moving animals. Chen, X. This accuracy could be possible with prisms, if you have a reasonable budget.

Process uses laser induced forward transfer or laser catapulting. Methods of using emulsion-PCR derived beads by the present assignee have been based on the fact that the bead itself serves as a decent ablation substrate for the approx 1 microJoule nanosecond laser pulse used to induce transfer.

Beads from 1 to 10 micrometers are easily and specifically ejected by focusing light into their plane. Although ejection optics disclosed by the present assignee can target features as small as nm, it is desirable to generate slightly larger, more disperse 1 micron clusters for use with initial prototyping.

I have made an assembly design of the laser scanner in Freecad using the new assembly 4 workbench. I am really happy with this workbench. It really helps with the open-hardware concept of the project; without these tools it would not be possible to give other people the ease of use to adapt and add their modifications.

Companies like Prusa Research are open source but not open-hardware as they don't provide access to the assembly drawings. They might do that in the future Open Hardware Fast High Resolution Laser Unity with these new tools. As described on Hackaday and Sci-hub , a new volumetric printing method has been described which uses two colors.

A light sheet with a nm laser diode and DLP projection between nm. The prism scanner can also be Open Hardware Fast High Resolution Laser Loop used to accomplish this. Basically, you can intersect the projection of the prism scanner with a laser sheet or line.

The prism scanner could operate at nm and the light sheet at nm. It would allow you to solidify resin at the intersection and not at the top of the resin bath. Note that if you project a resin bath from above say from air.

The top surface of this resin bath is NOT even. In fact it is wobbly, due to all sorts of surface effects. This would be circumvented by this new technology, as the top of the resin bath is not solidified.

An alternative for this would be to use a process akin to Continuous Liquid Interface Processing CLIP here you also don't solidify the top due to oxygen interaction. The patents claims something very similar to what Xolo is doing. Austin Russell is the world's youngest self made billionaire at age Luminar's lidar scanners use a combination of a rotating polygon mirror with a galvo mirror. The laser source uses a wavelength of nm.

This allows one to use a higher laser power without risking damaging the retina. Luminar currently has a good patent position in the US market and a very weak one in the European market. Luminar seems to have a monopoly on using laser sources between nm and repetition rates up to MHz. These have all been rejected due to lack of novelty. Personally, I think it is strange the US patents got accepted.

There was already prior by Trimble , see my earlier post , this system also operates a wavelength of nm and has an even larger scanning range. It was announced at Intergeo in Low profile lidar scanner with polygon mirror: USB2 Patent which protects a certain embodiment which uses a rotating polygon mirror with a galvo mirror. No patent seems to have been filed in Europe. Group of software patents ; USB2 , USB2 , USB2 There is a collection of US patents which protects scan patterns, adaptive pulse patterns and monitoring the vibration of the car to improve the scan patterns.

Software is not directly patentable in Europe. It seems likely that it will result in some sort of patent. Summary I have looked into a lot of patents of Luminar Technologies, but couldn't find a single one which is accepted in Europe yet. Most patents are rejected, maybe one or two will be accepted in a much weaker form. So far, building and selling your own car Lidar scanner in Europe still seems possible in the US, a non-free nation with respect to Lidar scanning, you would face many legal problems.

Finished new controller board for laser scanner and can now stream data via a ringbuffer to prism scanner. No more micro-controllers from now on but only FPGAs Thanks to Claire Wolf, Migen and Litex team. Code can be found here. On Tuesday 3 November , I gave a talk on coloring textiles with lasers. Lasers allow you to locally tune the diffusion of a colorant into the textile by applying heat. My aim is to reduce waste and create a more sustainable world with this technology and promote my prism scanner You can watch the video here.

I created an open-hardware project and got part of my inspiration while working for the Dutch State TNO. The core idea is that a laser bundle is moved by rotating a prism. The Dutch state got a patent for a plurality of laser bundles but not for a single laser bundle. For the printed circuit board application, it founded LDI Systems in This failed and they wasted multiple million tax dollars.

I only spent 10K dollars on a working system and paid taxes. I thought they would leave it there. I have contacted NWO in this regard as I don't see how the original issues can be solved.

I also wonder how much "own" money is brought in company is largely owned by the Dutch State. A company is not subject to tender law but the government is. As such the company might be use to circumvent it. I am also not aware of employees in this company and know they contacted an optical consultancy. But I think is strange the state is still sponsoring this project. Hackaday gave me 3K and the Dutch states gives a chosen business developer 45K to explore their failed project.

That's not really fair and in that sense the state it is sponsoring "closed hardware". Often the government throws away the result if unsuccessful, if it was open source one could at least learn something. Anyhow, I filed an official complaint and have talked to NWO. Links are no longer online, you can still find it in Google Cache.

NWO stated it updated its website. Although, I do not plan to participate in the Hackaday Prize It is inspiring to look for sustainable applications of laser technology. In , the United Nations set up a campaign for sustainable fashion. Most of the clothes are manufactured in Asia. This process requires a lot of water and produces toxic waste. Luckily, Dr. Laura Morgan , looked for ways to dye textile with lasers, see her extensive PhD thesis.

In her laser experiments, Dr. Morgan uses 2 Joules per square centimeter. Results are improved with multiple passes, e. A carbon dioxide laser is used in her experiments. She also shows other applications; fading linen, increasing the absorption of wool and applying 3D texture via heat distortion.

I think textile coloring could be a nice angle for the Hexastorm. If I have the time, I will do some experiments with a nm laser at 10W. This is much safer than a carbon dioxide laser as infrared light is invisible. The process still requires a washing step but the chemicals involved are a lot less dangerous than the chemicals used for PCBs. The application I see is adding patterns to existing products. I think the process is too slow due to insufficient laser power for large scale production.

Which brings me to an update of my current progress. I have made a new board as I made a mistake in the previous board. I also wrote new software, this has so far only been tested virtually. I placed the ICE40 chip on the board with drag soldering. The other components you can hand solder except for the oscillator which requires hot air used AYOUE and paste. In the next iteration, I plan to use mainly hot air it is much faster. Used TS as a soldering iron, the Loctice GC10 for paste, flux and some desoldering wire to get the solder on the TQ component right.

Biggest headache is that I didn't realize I had to send a wake up packet to the flash ram. I tried the python script ice zero prog to flash the memory but it didn' t work; turns out the wake up packet is implemented in icezprog but not in the old python script OMG!

Also found out the board has too many caps and resistors, icezero uses less see schema. View all 68 project logs. Create an account to leave a comment. Would this work? Are you sure? No it wouldn't work.. I am not shipping out prism at the moment as they r not balanced yet working on this.

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