Taxes: We collect general sales tax on shipments, unless the purchaser supplies us a signed official sales tax exemption certificate with the order. Purchase made outside our region are subject to state or local sales/ use tax, if any and other taxes payable by reason of this transaction.

Product warranty: Our warranty for all our mechanical components and systems are ONE year from the date of shipment. Repair or replacement will be made free of charge for products with defects in material and workmanship during this period. For our optical components, our warranty is 30 days from the date of shipment. Defective items will be replaced free of cost. The customer must notify any defect in optical components within 48 hours of receipt. For all warranty replacement, a written statement with an authorized signature indicating the reason for rejection attaching test reports are requested to accompany the returned parts. All defective items must be returned in their original shipping container within 10 days of the date of shipment.

Bearing height shall be measured with your height gage placed directly on the precision ground surface to which the bearing or conveyor bar is mounted. With the bearing leveled in accordance with our Application and Design Guide, zero your height gage against the top surface of the mounting block, and then lower the probe tip onto the upper surface of the air bar. Dimensioning of an air bar’s thickness can also be accomplished through use of a micrometer, placing the micrometer anvil face and spindle on opposite sides of the bearing, and measuring the distance between them.

For objects in the same plane, the edge resolution equals the center resolution. However, for objects in an arc, equidistant from the camera, the edge ...

Our strength is our satisfied customers worldwide. We request your continued support in our endeavor to serve you better.

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Purchase Orders: Written, faxed and e-mail purchase orders are accepted. All orders require immediate written confirmation.

Our core competency is in prototype development and low volume production of opto-mechanical devices and systems where skilled labour is the major input. Our location in INDIA enables us to be the most cost effective in this field of activity compared to any other company in the world.

With your New Way product directly placed on a precision ground surface, parallelism shall be measured by use of a displacement gauge, mounted to an armature and free to slide on the precision ground surface to which your bearing or air bar is mounted. If the bearing or air bar must be elevated, it shall be placed on precision gage blocks, with a graded tolerance. Zero the gauge against one corner of the surface which is parallel with your guide surface. Take measurements along this surface, paying special attention to measurements at the corners of the air bar surface. The largest difference between measured values is the parallelism between your bearing and the guide surface.

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The products described in this website constitute only the standard items we manufacture for research and industrial market. One of our major activity is in OEM market where we develop and supply low volume opto-mechanical devices & positioning as per custom design. We also undertake contract manufacturing of opto-mechanical products in standard and custom specifications.

B.7., H.M.T. Industrial Estate H.M.T. P.O, Kalamassery, Kochi Kerala, India - 683 503    +91 938-863-2098    sales@holmarc.com    Mon - Sat : 9 am to 5 pm

Per our Application and Design Guide, we recommend a surface finish of 16 RMS or better. Local flatness, which we define as the flatness under the bearing at any one time, should always remain below 50% of the designed air gap. This is a worst case scenario, and it is relatively easy to stay within 10% of the air gap height.

Shipping & Delivery: The shipping costs, Custom Duty and any (if) landing taxes etc will be extra. The date of delivery is only an estimate and we will have no liability for late or partial deliveries. we may refuse any order for any reason. Catalog items are normally shipped immediately from inventory. In the event that the items is out of stock, an estimated delivery date is given at the time of order. Most items can be shipped within 45 days.

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We have in-house infrastructure capabilities for all the processes involved in the manufacture of our products. This helps us to have total control of quality in our products and services.

Observe whether the monitor's brightness fluctuates as you tilt your head left and right. If you notice this effect, chances are your sunglasses are polarized.

Flatness shall be measured by use of a displacement gauge, mounted to an armature and free to slide on the precision ground surface to which your bearing or air bar is mounted. Zero the gauge against one end of the surface for which you wish to measure flatness, and then take measurements in regular intervals along the surface. The largest difference between measured values represents the flatness of the component. Of note, the air bar, air bearing or other component must be placed directly upon a precision ground surface and parallel with the guide surface in order to take accurate measurements on flatness deviations of the bearing surface.

Visione Group is your strategic partner for the innovative realisation of information and operational technology capabilities. · Our aim is to maximise the ...

This device is specifically designed for studying reflection gratings. It consists of a laser head mounted on a kinematic holder and a grating mount with angular adjustments. The grating can be fixed at appropriate angles using this mount. Fine adjustments in grazing or incident angle can be done using kinematic tuning of the laser mount.

The Tiffen 77mm IR Variable Neutral Density Filter is a solid variable neutral density filter providing an exposure reduction of approximately 2 to 8 stops.

New Way Air Bearings’ products provide exceptional flatness and parallelism, but in order to achieve the specifications listed on our product pages, all New Way products must be placed directly against a precision ground guide surface. Before any measurements are taken, the surfaces should be cleaned in accordance with our Care and Air guidelines, namely using 70% isopropyl alcohol only.

Payment: 100% Advance payment prior to dispatch. Customers paying by international wire transfer must prepay all bank charges including all charges imposed by correspondent or intermediary banks.

Diffraction grating

Get in Touch     B.7., H.M.T. Industrial Estate H.M.T. P.O, Kalamassery, Kochi Kerala, India - 683 503    +91 938-863-2098    sales@holmarc.com    Mon - Sat : 9 am to 5 pm

Compact Disc and the meter scale consists of a series of evenly spaced (reflective) grooves and ridges that act as a diffraction grating. The grooves in a compact disc are very close together. (The tracks of a compact disc act as a diffraction grating, producing a separation of the colors of white light. The nominal track separation on a CD is 1.6 micrometers, corresponding to about 625 tracks per millimeter. This is in the range of ordinary laboratory diffraction gratings.) CD and the millimeter scale are reflective and therefore the diffraction pattern can be observed by looking at the reflected pattern. The spectrum of colors can be seen reflected from a compact disc. The closely-spaced tracks on the surface of the disc form a diffraction grating, and the individual wavelengths of white light are diffracted at different angles from it. More +

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Our Laser Beam Expanders provide a low cost means of focusing and shaping laser beams with a high degree of accuracy. Expansion ratios from 3x to 30x ...

Model No: ED-D-04-KLM Adjustments : Using 80 tpi lead screws Adjustment Range : +/-4 degrees Material : Black anodized Aluminum alloy Quantity : 1 no.

Both the laser and grating mounts are fixed on rail carriers, which are held on a graduated solid aluminum rail. The diffraction pattern is projected on a screen or wall. When a meter scale is used as reflection grating, the pattern can be observed typically at two to three meters.

Jan 8, 2021 — Plane polarized light consists of waves in which the direction of vibration is the same for all waves. In the image above, you can see that a ...

We carry The BEST selling reading magnifiers in America! Specialize in low vision products for example: Magnifying Glass and reading magnifiers designed for ...

Apr 11, 2023 — Positive cylindrical lenses are also utilized in barcode scanners, spectacles for astigmatism correction, optical sensors, and in the field ...

Ours is an organisation dedicated for the design, development and manufacture of optics, opto-mechanics, educational products and positioning devices.

Easy to Use. Folding Frames extend out easily and fold down out of site when not in use. Each line is on a separate spool so no tangling will occur. There is ...

Established in 1993, Holmarc Opto-Mechatronics Ltd manufactures variety of scientific and engineering instruments for research, industry and education.

The radius of curvature of concave mirror is always positive, therefore, the same is for the focal length. The radius is twice of the focal length.

We try improving the quality of our products for every consignment we dispatch. Our customers can expect to receive better products each time a purchase order is placed with us.

Specifications: HOLMARC reserves the right to modify, change or otherwise improve all items in the catalog specifications without prior notice.