Products    /    Optomechanics    /    Apertures
Apertures

Stainless steel variable apertures
Variable slits with micrometer control

Motorized Variable Aperture



    Actuator :     Stepper motor
    Aperture type :     Circular
    Aperture diameter :     2 mm to 11 mm (Adjustable via software or front panel)
    Resolution :     1 mm
    PC interface :     RS232 / USB
    Front panel LCD display shows aperture diameter
    Front panel buttons for Open and Close function (1 mm on single press)


Pinholes - Mounted


Holmarc manufactures precision pinholes for spatial filtering and other similar applications. Standard pinholes are available in either copper or stainless steel substrates.



* Custom hole size can be provided.

HPRA - Series

    Material    :    Copper

    25 mm outer diameter

    20 Micron thickness

    Compatible with PHC - 3 pinhole cells


Model No. Size Price $
HPRA-3-5 5.0 μm +/- 1.0 μm 88.00
HPRA-3-10 10.0 μm +/- 1 μm 88.00
HPRA-3-15 15.0 μm +/- 1.5 μm 92.00
HPRA-3-20 20 μm +/- 2 μm 88.00
HPRA-3-25 25 μm +/- 2 μm 92.00
HPRA-3-30 30 μm +/- 2 μm 88.00
HPRA-3-35 35 μm +/- 2 μm 88.00
HPRA-3-50 50 μm +/- 2 μm 92.00
HPRA-3-100 100 μm +/- 2 μm 92.00
HPRA-3-200 200 μm +/- 2 μm 92.00

PIN - H - Series

    Material    :    Stainless Steel

    9.35 mm outer diameter

    20 Micron thickness

    Compatible mounts available


Model No. Siz e Price $
PIN-H-025 0.25 mm 24.00
PIN-H-050 0.50 mm 24.00
PIN-H-075 0.75 mm 24.00
PIN-H-100 1.00 mm 24.00
PIN-H-200 2.00 mm 24.00
PIN-H-300 3.00 mm 24.00

PINH - Series

    Material    :    Stainless Steel

    25 mm outer diameter

    20 Micron thickness

    Compatible with PHC - 3 pinhole cells


Model No. Size Price $
PINH-5.0 5.0 μm +/- 1.0 μm 46.00
PINH-10 10.0 μm +/- 1 μm 46.00
PINH-15 15.0 μm +/- 1.5 μm 46.00
PINH-20 20 μm +/- 2 μm 46.00
PINH-25 25 μm +/- 2 μm 46.00
PINH-30 30 μm +/- 2 μm 46.00
PINH-35 35 μm +/- 2 μm 46.00
Pinhole Cells

Model No : PHC - 3 Price - $ 15.00


These pinhole cells are suitable for 25 mm dia. mounted pinholes. It can be used with rigid, kinematic, XY, XYZ and 5axis stages. The cell comes with standard RMS thread for fixing to various mounts.


    RMS external thread

    Material    :    Aluminium

    Finish    :    Black anodized




Round Apertures - AS Series



These apertures are made in aluminium substrate and finished by black anodizing. The aperture can be mounted to our standard RLM-25 lens mount.



    Material    :    aluminium

    Finish    :    black anodized

    25 mm outer diameter
    0.5 mm thickness

    Compatible with RLM - 25 mount



Model No. Diameter D Price $
AS - 0.5 0.5 mm 11.00
AS - 1 1 mm 11.00
AS - 2 2 mm 11.00
AS - 3 3 mm 11.00
AS - 4 4 mm 11.00
AS - 5 5 mm 11.00
AS - 6 6 mm 11.00
AS - 7 7 mm 11.00
AS - 8 8 mm 11.00
AS - 9 9 mm 11.00
AS - 10 10 mm 11.00

Compatible mounts are available for other standard / custom pinholes


Variable Aperture
Std Variable Round Aperture - SSID Series

Holmarc manufactures variable aperture in four different sizes. These are precision devices which offer near perfect circular apertures.




    Made of brass and aluminium

    Leaves made of spring steel

    Compatible with MSSID Series mounts

    Black anodized finish for casing

    Black zinc finish for leaves


Model No. Max Aperture Min Aperture D ( mm ) Thickness ( mm ) Price $
SSID-12 12 mm 0.8 mm 19.8 5.0 42.00
SSID-20 20 mm 0.8 mm 30 5.5 45.00
SSID-25 25 mm 0.8 mm 37 5.5 49.00
SSID-37 37 mm 1.2 mm 53 6.0 64.00
SSID-50 50 mm 2 mm 70 7.5 103.00

Std Variable Round Aperture Mount - MSSID Series

These mounts are specially suited for Holmarc’s variable apertures. There is M6 tapped hole at the bottom for post mounting.






    Aluminium alloy construction

    M6 mounting hole

    Black anodized finish

    Compatible with SSID series apertures


Model No. D ( mm ) t ( mm ) d ( mm ) Suitable Aperture Model Price $
MSSID-12 19.8 8.0 35.8 SSID-12 15.00
MSSID-20 30 9.0 50.0 SSID-20 18.00
MSSID-25 37 8.5 53.0 SSID-25 19.00
MSSID-37 53 9.0 69.0 SSID-37 21.00
MSSID-50 70 10.5 86.0 SSID-50 25.00

Stainless steel variable apertures and compatible mounts are available


Std Variable Slit - SVRA Series

Variable slits manufactured by Holmarc has micrometer drive which shows slit opening directly on the graduations.








Model No. Price $
SVRA 172.00


    Slit has 15mm length

    0-2 mm opening

    Opens equally from center

    Polished steel blades

    M6 mounting hole

    Post mountable

    Aluminum alloy construction

    Black anodized finish
Spatial Filter Mount - Laser Fiber Coupler SFAS Series

All the translation movements (Z axis stage as well as two X-Y positioners) are provided with preloaded ball bearing guide ways for play less and stick-slip free positioning.





Model No. Price $
SFAS 205.00
SFAS - VC -

Note: Pinholes and microscope objectives are sold separately


Laser Fiber Coupler

All the translation movements (Z axis stage as well as two X-Y positioners) are provided with preloaded ball bearing guide ways for play less and stick-slip free positioning.







Model No Connector Type Price $
LFC - 1 Fiber Chuck (FC1) 266.00
LFC - 1 FC FC, Connector 274.00


    3 mm XY adjustment

    10 mm linear movement

    Fiber Chuck / FC Connector Compatible

    Compatible with std microscope objective

    M6 mounting hole

    Post / base mountable

    Black anodized finish






Pinholes PINH-Series 10

Pinholes PINH-Series 10

$ 33.06

Buy

Pinholes PINH-Series 15

Pinholes PINH-Series 15

$ 33.06

Buy

Pinholes PINH-Series 20

Pinholes PINH-Series 20

$ 33.06

Buy

Pinholes PINH-Series 30

Pinholes PINH-Series 30

$ 33.06

Buy

Pinholes PINH-Series 40

Pinholes PINH-Series 40

$ 33.06

Buy

Pinholes PINH-Series 50

Pinholes PINH-Series 50

$ 33.06

Buy

Pinholes PIN-H-Series 025

Pinholes PIN-H-Series 025

$ 16.83

Buy

Pinholes PIN-H-Series 050

Pinholes PIN-H-Series 050

$ 16.83

Buy

Pinholes PIN-H-Series 075

Pinholes PIN-H-Series 075

$ 16.83

Buy

Variable Round Aperture With Mount 25

Variable Round Aperture With Mount 25

$ 48.69

Buy


Home | Products | Supports | Company | Contact Us

|

©2025 Holmarc Opto-Mechatronics Ltd. All rights reserved.