Optics/Interferometers & Others

Optics/Interferometers & Others

Lens holders

Various lens holders are available, ranging from the holder to hold a circular lens and mirror in place which facilitates centering to an easy-to-use type and another holder with which a cylindrical lens can be held in place.
(including C-357, HL-C30, HL-R30, C-28, etc.)

Mirror holders

We provide a wide variety of mirror holder products, including the one that holds a circular mirror in place, another one that secures a rectangular mirror in position after it is glued and so on.The tilting screw for fine adjustment is enlarged as much as possible to improve the operability.Included among them are the holder of upper-area control type which provides easy control even for optical system arrangement, the holder of gimbal structure type where the center of fine angle adjustment matches the reflection center of mirror, and others.
(MHA-50, MHA-S50, MHF-50, MHS-60B, MHJ-54, etc.)

Polarization element holders

These holders are used to hold polarization elements in place, such as polarization plate, wave plate (wave retarder) and Glan-Thompson prism.They are also provided with a rotation mechanism of element which is required for operation of polarization plane.
(POH-30, POH-50, etc.)

Prism holder

About spatial filter

The spatial filter consists of a lens and pin hole, which is used to remove interference fringes generated from debris or scratch of the lens through arrangement of the pin hole in a light-focus position of the lens and to create a diffuse light which is free from noise and finely formed.This filter is termed a spatial filter because it is a device used for spatial filtering.

As a lens which is applied to the spatial filter, an objective lens for microscope is used.This is because a short focal length (several millimeters) and spherical aberration are calibrated, and others.A pin hole's diameter is calculated from a wavelength of the light source and a focal length of the objective lens, both of which are to be used. And, a pin hole with a proper diameter (several μ millimeters to 50 μ millimeters) should be used.

The diameter of a pin hole to be used is determined by the following expression:

Aperture diaphragms

They are the products designed to extract a beam of light having a required diameter only via a circular aperture and aperture diaphragm blades.There is also a slit-like aperture diaphragm which is not circular in shape.
(AD-8, C-56, etc.)

Camera holders

Our product range includes the camera holders with which commercially available camera lenses, CCD and digital cameras equipped with a JIS-approved attachment member for tripod can be fixed in position.
(HC-41, HC-61, HC-T2, C-54-N and so on)

Holders for optical fiber

These holders are designed to hold an optical fiber in place and to bob such fiber in the vertical plane of optical axis.
[C-53-(2) and C-53-(3)]

Grooved holders

They are the products with which screen, light shielding plate, thin samples, etc. are held in place.
(FH-30, FH-60, FH-160)

Hologram frame

This product is intended to hold a dry hologram plate in place. In this frame, a hologram plate remains pressed down with a leaf spring.
[C-52-(4)]

Laser power meters

They are designed to measure the power (light intensity) of a laser beam.The circular-form and rectangular-form types are available for the sensor and light receiving part, which are selectable for the intended use.
(8230E, 82311B, 82321B, etc.)

Laser protection equipment

The available pieces of equipment are protective glasses and light shielding plates for exclusive use which are mainly used for protecting eyes against damage caused by a laser beam during work operation using such laser beam.Other types of protectors are also available for each wavelength, complete absorption, work tasks, etc.In addition, we also offer warning labels which can serve as warning signs for a working area/environment using a laser beam.
(YL-331, YL-760, YL-500, YLC-1 and ZS-L1)
Relation between optical density and attenuation rate
Optical density (OD) Attenuation rate
1 1/10 (10-1
2 1/100 (10-2
3 1/1,000 (10-3
4 1/10,000 (10-4
5 1/100,000 (10-5
6 1/1,000,000 (10-6
7 1/10,000,000 (10-7
8 1/1,000,000,000 (10-8
9 1/10,000,000,000 (10-9
10 1/100,000,000,000 (10-10
Class separation and contents of laser products (excerpts from JIS C6802)
Class 1 Low output (0.39 μW or lower); They shall essentially be safe to use in design
Class 11M Low output (0.39 μW or lower; and wavelength of 302 to 4000 nm)
They shall be safe to use under a certain condition, including an intrabeam viewing state. However, the risk of an accident may be incurred if an intrabeam viewing is conducted through an optical means within the laser beam.
Class 2 Visible light and low output (1 mW or lower; and wavelength of 400 to 700 nm)
With this class of products, human eyes shall be protected against damage usually by their aversive reaction to a laser beam, including a direct intrabeam viewing state.
Class 2M Visible light and low output (1 mW or lower; and wavelength of 400 to 700 nm)
With this class of products, human eyes shall be protected against damage usually by their aversive reaction to a laser beam. However, the risk of an accident may be incurred if an intrabeam viewing is conducted through an optical means within the laser beam.
Class 3R The output of this class of products shall be 5 times or less (wavelength of 400 to 700 nm) as high as that of class 2 for visible light, and 5 times or less (wavelength of 302.5 nm or more) as high as that of class 1 for other rays of light than visible light.
However, the risk of an accident may be incurred in a direct intrabeam viewing state.
Class 3B Their output shall be 0.5 W or lower. Conducting a direct intrabeam viewing introduces a risk of a mishap.
However, pulsed laser radiation viewing that does not focus the laser beam on the focal plane through diffuse reflection is not dangerous, and a safe viewing can be conducted under a certain condition.
Class 4 High output (exceeding 0.5 W). They may create a risk of causing a dangerous diffusion reflection.
These factors may cause skin injuries and incur a risk of fire.
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