In a system for moving and zooming in a virtual reality environment, a user can move from a first virtual location in the virtual environment to a selected feature at a second virtual location in the virtual environment. The user interface provided on the handheld electronic device can be manipulated while moving from the first position to the second position to adjust the user's ratio or viewing angle relative to the user's surroundings in the virtual environment. A portable or fixed light-shaping system that can shape various light sources through a series of optional and movable output-specific light-shaping optical elements to produce controlled and accurate light output compound lighting. In the study of solid propellant ignition and combustion performance, carbon dioxide green laser pointer as a radiation source has the advantages of high output energy, adjustable irradiation time and output energy, and strong anti-electromagnetic interference ability. It has become a new type of solid propellant research at home and abroad. Ignition method. However, the wavelength of the laser output by the CO2 laser is 10.6 μm, which is invisible. All the propellant laser ignition experiments require that the laser can be irradiated in the center of the propellant. Due to the invisibility of the laser, there is no special aiming light. It is very difficult and time-consuming to face the light when tooling. The red laser pointer is the cheapest and most common today. Green laser pointers have more complex laser diode components and cost hundreds of dollars. Blue and purple laser pointers will soon be available at higher prices. As production volumes increase to meet demand, and production processes improve, the price of newer laser diode types will drop. Since the use of laser pointers is prohibited in public places, laws restricting the use of laser pointers may lead to a decline in demand, thereby offsetting this trend.
The technical solution to achieve the objective of the present invention is: a positioning fixture that uses a laser pointer to locate invisible high powered laser light, including a main bracket, a fastening screw, a laser pointer, and a laser pointer bracket; the main bracket includes a connecting tube, a fixing ring, and a light-transmitting ring , The light-transmitting ring is fixed at one end of the connecting cylinder, the other end of the connecting cylinder is connected to the laser, and the fixing ring is fixed on the connecting cylinder; along the circumference of the light-transmitting ring, N first through holes are evenly distributed, N more than 3; laser The pen holder includes a laser pointer fixing ring and a pin. The pins are arranged on the side wall of the laser pointer fixing ring. M second through holes are evenly distributed on the side wall of the fixing ring, M=N; the pins of the laser pointer holder are inserted into the second through holes, and It is fixed by fastening screws; the laser pointer is fixedly connected in the laser pointer fixing ring, and the laser outlets of the laser pointer are respectively aligned with the above-mentioned first through holes.