Pondicherry, India
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we are the only manufacturer & suppliers of micrometer anvil checker in india. Measures parallelism (non contact) between the anvil and spindle faces. It employs the use of an autocollimator that could also be used for surface table calibration. A special micrometer anvil checker designed and developed by prisms india replaces the use of many sets of optical parallel or gauge blocksslip gauges to cover a wide range of micrometers. It employs the use of an autocollimator that could also be used for surface table calibration.
principle of workingthe light from the autocollimator is divided into two parts by reflection at the faces of a 90 deg prism, so that each part is directed towards one of the gauging tips, the polished surface of which acts as a suitable reflector. The angle between the reflecting faces of the prism is precisely 90 degrees, so that the two reflected beams are collinear. The light beam are reflected at the anvil surfaces and re-enter the instrument after a second reflection from the 90 degrees prism. Each beam forms a reflected image of the scale, and if the anvils are parallel these images coincide; otherwise the departure from parallelism is readily measured by reading the separation of the images against the fixed scale. Moreover, the square ness of the face of the micrometer spindle to the axis of rotation can also be checked, by measuring any displacement of the appropriate image as the spindle is rotated.
the prism is placed with the junction of its reflecting faces nominally central with the instrument object glass, and with the faces in line with the micrometer anvils. Displacement or tilt of the prism has no effect upon measurement, but rotation of the prism (so that its edge is inclined to the anvils) will produce a separation of the reflected images at right angles to the micrometer axis. The prism must be adjusted rotationally until this separation is a minimum. Any error in the 90 degrees angle between the reflecting faces is doubled in its effect upon the reflected images, since two reflections occur at each face.
the main advantage of this instrument is that, all sizes of micrometer ranging from 25 mm to 300 mm could be inspected for parallelism, whereas you need to have gauge blocks or optical parallel for every size of micrometer.
the graduated reticule of the instrument (mac-01) reads 1 division = 0.923 microns (say 1 micron) parallelism error of the spindle and the anvil of the micrometer.
another model (mac-02). Is also available with least count of 0.739 microns.
moreover this instrument with micrometer readout could also be used as an autocollimator for straightness, parallelism, squareness, rotary table calibration measurements.
We are offering angle dekkor stand.
Used in Optics Industry or in Machine Tool Industry & Calibration Labs to check the ANgle Gauges.
we offer spindle target of fine quality. Spindle target is used for mounting and aligning the spindle and bore rotation axis. Spindle targets are special purpose mounted reticule targets. The reticule may be a cross line on a mirror or on a beamsplitter. In autocollimator application the mirror surface is used to measure angular tilts. In alignment telescope application the target cross line reticule is used for measurement of linear shifts. Our spindle target is precisely manufactured using the premium grade raw material that is sourced from known and reliable dealers. Additionally, it is being presented at the best rates in the industry.
spindle targets are special purpose mounted reticule targets. The reticule is a cross line on a mirror. In autocollimator application the mirror surface is used to measure angular tilts. In alignment telescope application the target cross line reticule is used for measurement of linear shifts.
two adjustment screws are provided for linear movement of the reticule to center the reticule to the axis of rotation.
three leveling screws are provided for tilting the mirror surface for aligning the surface perpendicular to the axis of rotation.
types of target1) 25 mm dia front surface mirror2) 25 mm dia front surface mirror with 10 microns width cross line 3) 25 mm dia cross line (parallelism < 2 arc secs)4) 25 mm beam splitter with 10 microns width cross line (parallelism < 2 arc secs)
Alignment Cube facilitates easy alignment in five orthogonal direction. Optical Cubes are made from Fused Silica material and are Aluminum coated. Also, our Alignment Cube is neatly polished and is made using high grade raw-material. Moreover, we provide Alignment Cube in different sizes as per clients requirements.
we are the only manufacturer & suppliers of optical parallels in india. Optical parallels are used for checking flatness and parallelism of micrometer measuring faces. These are supplied as a set of four numbers with thickness increment of 0.125 mm (one fourth of the pitch of the micrometer). Optical parallels are made from fused silicafused quartz material as the material has environmental durability, and a low coefficient of thermal linear expansion and as well resistant to abrasion.
the parallels are manufactured to comply with the npl (national physical laboratory) specification moyscmi54
optical windows are manufactured to clients requirements. Windows are processed in double side polishing machine and by optical contact methods. Very high degree of parallelism to less than 1 arc second can also be supplied.
Pedestal Stand Mount for AUtocollimator or for ALignment Telescope. Could be rolled over in Shop Floor. Height adjustment to suit the machinery height.
linear interferometer is used for the investigation of the machine tools geometry. The linear interferometer used for measurement of positioning accuracy of cnc & cmm. compactly designed and easy to carry from one place to another. The linear interferometer, which we offer, has different measurement capabilities and can be assessed as per ones needs. This perfectly-designed linear interferometer is demanded widely in industries for diverse purposes.
we are the only manufacturer & suppliers of monochromatic light source in india. Monochromatic light source also called as checklite is manufactured with the best burma teak wood for long life. Model mls-01 is used by placing the optical flat on top of the lapped part and observing the light bands from top of the optical flat. Model mls-02 is used by placing the lapped surface on top of the optical flat and the light bands are viewed through the mirror. Model mls-01 is used by placing the optical flat on top of the lapped part and observing the light bands from top of the optical flat. Model mls-02 is used by placing the lapped surface on top of the optical flat and the light bands are viewed through the mirror. model mls-02the part to be inspected is placed over the optical flat and the light bands are viewed from beneath after reflection from a mirror. This type monochromatic light source is used when the part under inspection is thin and of large diameter. If an optical flat of large diameter is to be placed on such thin parts there would be deformation of fringes due to the weight of large size optical flat. To avoid this the part to be inspected is placed over the optical flat and the fringes are viewed after reflection from a mirror placed below. the master surface of the optical flat face upwards and the test surface face downwards and are in contact to view the light bands. Mls-02 is suitable for use with 200 mm diameter optical flat. On request mls to suit optical flats larger than 200 mm diameter is manufactured against specific order. specifications
model mls-01this is used when the optical flat is less than 150 mm diameter. The optical flat is placed over the polished part under inspection. The light bands are viewed over the optical flat from above.
Front Surface Optical Mirrors (Front Surface Al+SiO coated mirrors) are custom made to clients requirement. Be it a circular, square, rectangular or any other shape specified by the clients could be manufactured by Prisms India. Clients can avail Front Surface Optical Mirrors from us at most affordable prices.
shear plate collimation tester allows quick testing of collimation of laser light by utilizing shearing interferometry and also used to measure wave front curvature and quantify divergenceconvergence magnitude. The shear plate collimation tester, which we offer, provides accurate results and is properly tested for its hassle free performance before its dispatch. Our shear plate collimation tester is designed by our experts in accurate precision. Clients can avail shear plate collimation tester from us at affordable prices.
non contact flatness measurement interferometer also called fizeau interferometer for inspection of flatness of optical or mechanical parts. Many mechanical seal manufacturer use this interferometer for evaluation of flatness. In automobile parts many flat surfaces require inspection of flatness in light bands. Monochromatic light source and use of optical flat is replaced with fizeau interferometer.
highlights
principleinterferometer is shown in figure 1 (the basic layout of a fizeau autocollimator). A laser source is spatial y filtered via a microscope objective. This microscope objective is located at the focal point of a collimating lens. Between the microscope objective and lens is a cube beam-splitter. The collimated beam encounters a slightly wedged glass plate. This is the heart of the interferometer. The surface adjacent to the collimating lens is of good optical quality.
however, the next surface is of exceptional optical quality, 20 peak to valley (pv) or better. This is the reference surface and part of the collimated beam is reflected by this surface. Part of the collimated beam continues on to interrogate the component being tested. The return beam contains information on aberration introduced by the test surface. The two wave fronts recombine inside the interferometer.
the cube beam-splitter diverts the combined beam towards a recording medium, either film or a ccd. An intermediate lens forms an image of the test surface onto the recording plane.
