Showing posts with label fresnel. Show all posts
Showing posts with label fresnel. Show all posts

Sunday, May 2, 2021

Exampling Cloaking Device

SPACE1 Tests Small Exampling Optical Cloaking Device

The original SPACE1 cloak is real and runs on optical lenses defined by the mathematics in the original post and is designed to make large spaceships appear or disappear, as shown in Star Trek. 

https://space1usa.blogspot.com/2020/11/space1-cloaking-technology.html
https://space1usa.blogspot.com/2021/04/space1-cloaking-device.html

However, there's a more simple way to create an exampling cloak without the number of glass optical lenses set to calibrated focal lengths. Using a single flat 2D-appearing sheet of lenticular resin the shape of a credit card and a pen to represent the spacecraft or rocket, a mechanical calibration either shows the object or puts it into full cloak.

This is a type of Fresnel lens that takes the light coming into it from the back at obtuse angles and projects it forward in the front of the lens. 

Simplifying Cloaking Technology
This re-directing of lightwaves causes what is on either side of the lens to appear as though it is directly behind the lens, effectively making what’s actually behind the lens to seemingly disappear. Larger sample cloaking devices can be made from sheets of 3D Lenticular resin lenses imported from China. A Lubor’s lens is more correctly called a lenticular lens which consists of an array of identical linear prisms usually molded into a sheet of clear plastic. A Fresnel lens consists of an array of circular prisms whose angles increase and widths narrow with distance from the center. A linear Fresnel lens would have the increasingly refractive prisms in a linear array to form a line focus. The original Fresnel lenses, named after the inventor—a famous French optics guy, were first used in lighthouses to collimate searchlight beams, while modern usage is often found using molded plastic sheets used in solar cookers and other applications where a flat lens is desirable. The Lubor’s lens is used in ‘invisibility cloak’ demonstrations, and is named after the magician who promoted the effect.

Lenticular Lens Design
A lenticular lens design allows very high powered convex or concave lenses to be used in situations when lens size, thickness, or weight, would otherwise be problematic. Lenticular lenses are often used for eyeglasses when the lens powers are >+/-15.00D. The optical portion of the lens is molded to a flat “carrier” lens that is usually close to plano, or zero, in power. Below is an example of a very high plus lens in lenticular design. You can see that the strong Rx is only in the circular area at the lens center.
Fresnel Design
Another way to put very high powered lenses into a thinner configuration is to use a “Fresnel” design. This involves using multiple small lenses placed over a flatter “carrier” lens. This is most commonly used for magnification (convex or plus powered lenses), or for prism lenses (wedge shaped lenses that move the location of an image rather than change its size). The cross-section image below illustrates a Fresnel lens that incorporates multiple small prisms instead of one very thick prism. While this design has many optical and industrial applications, it is only used for prism in ophthalmic lenses. The lines created by the prisms can interfere somewhat with lens clarity.

Lubor Lensing
A Lubor lens is a variation of a Fresnel prism lens design, and like any linear prism it will deviate the image in one direction, and along one axis only. If the lens is oriented so that the horizontal lines are parallel with the object being viewed, that image will be moved forward and be visible, but any objects in the meridian 90° away, will be blocked (and vice versa). Lubor lenses are used primarily by magicians! 

Buying Lenses
You don’t make a Fresnel lens, you buy them. They are mostly made of glass and clear plastic materials such as acrylic and polycarbonate. They work by stepping the surface of the lens to remove the mass that would make a normal lens very thick if the lens surface was continuous.

Saturday, April 7, 2018

Space1 Fresnel Rocket Recoverey Device

Humanoido at SPACE1 has invented the fantastic SPACE1 Fresnel Rocket Recovery Device RRD - a new method to isolate the position of the returning rocket and minimize landing distance from the launch site. The device saves millions of dollars per mission and overall represents a new device with a potential billion dollar space industry. The story in Humanoido's own words...

Guest Editorial Story by Humanoido, Founder & CEO of SPACE1
This good news story was inspired by a combination of events and one at the local supermarkets. I put the design onto my cel phone and showed it to the store clerk who recognized the mathematical pattern and correspondingly produced the material I was looking for. I requested three, and she could see the light in my eyes and said there was no charge for the said items!

I had this sparked imaginative idea for a recovery design that would deploy upon the beginning of the rocket recovery phase, after it reached aerodynamic return space apogee and it was time for tourists to return home. However, tourists don't want to swim home from the waves of the Pacific Ocean, or walk home from the Siberian waste land. There had to be a better way of returning space craft back to their original points of origin. Conventional parachutes are problematic with or without any wind and often end up drifting the rocket, sending it miles away from the original launch site.

— the device saves millions of dollars and overall represents a new potential billion dollar industry —

Landing off site could be dangerous, ending up in housing districts on top of a house or business structure, in a lake, river or ocean location with strong brusque wind and fast water currents to carry the rocket out to sea or worse yet, sink it to the bottom beneath strong waves, land in groves of trees and forest regions, on the side of a mountain, or in urban areas onto highways, railroad tracks, or crash into tall skyscrapers. Believe it or not, the special modern technology flat indices bag has a perfect design that has inspired me to design something which I have named the Space1 Fresnel Rocket Recovery Device RRD. My invention is now the only one in existence proved out by the research program.

— if we can nail the rocket return flow without complicated electronics, telemetry, guidance, equipment, and/or GPS, the cost will immediately come down by millions of dollars —

It's cut like a massive vehicular Fresnel lens with the center nodal point closed and the sides acting like a series of regulating venting navigational connective conduit current interference rings with refractive indices in effect, only instead of using waves of light it uses waves of air flow. Like the defining effects of the Fresnel, it undergoes the physics of both constructive and destructive interference of wave form analysis. This induces a pure guidance alignment of nodal lines from the physics of the interactions.

Of course bagging was never intended for that purpose. It's sole purpose was as coffee coolant and a hands off approach to avoid skin burns. Fresnel deals with light. However, the efficacious bag is only designed to hold your hot coffee cup and provide some ventilation in the most simplistic of terms. The final complexity of the RRD will let air pressure through in all the right places, "refractively tempered," and will promote the delta X regulation in a scaleable Z dimension while minimizing the delta X drift. This is exactly what was historically needed in the space program, however their large parachutes often mandated recovery in vast ocean seas or at very remote Siberian land sites, where a large flat empty expanses exist to accommodate the approximate point of space craft return.

The RRD ensures return vehicles do not end up drifting many miles off course, and therefore can help to initiate a recovery close or at the point of launch. If we can nail the rocket return flow without complicated electronics, telemetry, guidance, equipment, and/or GPS, the cost will immediately come down by millions of dollars. Cost savings go directly to the space consumer, space tourists. It looks like we have achieved this goal and this has become a billion dollar invention that SPACE1 can sell as a modern aerodynamic product for spacecraft systems. Of course this will require new invented special formulated deployment technology as well so it initiates at a time that "recovery operations begin." Tests will begin immediately on the system and I will manufacture three systems, each for implementation in the PIONEER HEAVY Rocket. Not only does the RRD add a layer of convenience and revolutionize our own rocket technology, but in terms of affordability it puts us far ahead of the race to open up new frontier vistas of space tourism.

Fresnel lenses consist of a series of concentric grooves etched into plastic. A Fresnel lens replaces the curved surface of a conventional optical lens with a series of concentric grooves. These contours act as individual refracting surfaces, bending parallel light rays to a common focal length. As a result, a Fresnel lens, while physically narrow in profile, is capable of focusing light similar to a conventional optical lens but has several advantages over its thicker counterpart. Source: EO