Who invented profile projector?
3. History of Profile Projector • The idea of using profile projector, which is created by James Hartness and Russell W. Porter, came from mixing optics and measurement in a device.
What is profile projector?
A profile projector is an optical measuring instrument used in metrology and quality control. This device allows the shadow of the part to be measured to be projected on a screen which is then used by the operator to perform the measurements.x.
What is the purpose of profile projector?
The profile projector is widely used for complex-shape stampings, gears, cams, threads and comparing the measured contour model.
What is the working principle of profile projector?
When an object is placed in between condenser lens and the light source, a shadow of the profile is projected at some enlarged scale on the screen. this enlarged profile will be used to compare with the working standard. Here, Lenses plays a significant role in the magnification of the profile(Image).
What is the least count of profile projector?
In general, the least count of Profile Projector is 0.001mm or 1 microns.
Which type of lamp is used in profile projector?
halogen projection bulb
A dual purpose instrument having halogen projection bulb 12 Volt / 100 Watt workable on 220 Volt AC.
What are the parts of profile projector?
Profile Projector / Optical comparator Calibration
- Focus squareness parallel to optical axis.
- Table squareness perpendicular to optical axis.
- Perpendicularity of X to Y axis.
- Magnification and distortion accuracy for all lenses.
- X-Y axis lead accuracy for the complete length.
- Edge detection accuracy.
How accurate is a profile projector?
Magnification accuracy : 0.08% contour, 0.12% surface. Equipped with DC-3000 data processing system and foot-switch for measuring. Erect image measuring for different requirements.
What are the typical applications of profile projectors?
Applications. Profile projector is widely used for complex shape stampings, gears, cams, threads and comparing the measured contour model. It’s easy to use and highly efficient.
What is the purpose of a profile projector?
Profile projector, also known as contour comparator, is widely used to measure 2-dimensional data. An optical comparator (often called just a comparator in context) or profile projector is a device that applies the principles of optics to the inspection of manufactured parts.
When did the first digital projector come out?
The first digital projection panels paved the way for the multimedia displays and projector screens (and projectors themselves) that are commonplace today. Computer and early video projectors arrived in the early 1990s with the introduction of a truly digital data projector.
Who was the inventor of the overhead projector?
A Brief History: Roger Appeldorn created a machine that projected the image of writing on clear film in the early 1960s, while working at 3M, according to the company’s recount of the invention of the overhead projector. Appeldorn specifically reached out to businesses and teachers to push the product.
What kind of screen does a data projector use?
A Brief History: A data projector takes signals from a video source, such as a computer or television, and projects an image on a projection screen. Early data projectors used a single cathode ray tube (CRT) to project a monochrome image, according to PC Magazine.