OPTICA ‘ s filter are designed for operation at 23 degrees Celsius, these filters can be used throughout the temperature range of -50 to +100 degrees Celsius as long as thermal shock is avoided.

Color Glass Filter

Color glass filters stands out due to its selective absorption in the visible wavelength range. The filters appear to be colored if their filter effect lies within the visible light spectrum. Optica, one of the leading filter glass manufacturers with a wide product range.

 

Our range of glass filters with more than 60 types includes the following filter types in the visible wavelength range from 200 nm upwards:

• Band pass filters, which allow required ranges to pass through selectively
• Long pass filters, which block unwanted shorter wave ranges
• Short pass filters, which block unwanted longer wave ranges

Color Glass Bandpass Filter are often used for longpass and bandpass filters, coated substrate cemented with color glass which have different absorption and transmission properties across the spectrum.

Technical Specification

Sizes & Tolerance

Size 3mm to 160mm + 0.2mm ( Round or Rectangular)

Thickness Tolerance

1mm to 6mm ±0.2mm

Flatness

2λ@632.8nm

Surface Quality

80/50 scratch and dig

Parallelism

<1 arc minutes

Clear Aperture

>90%

Size: Diameter 3 mm to 160mm, Square 5mm to 160mm

 

We offer following Std Color Glass Filters:

GG Series: Yellow glass : GG400, GG420, GG455, GG475, GG495

OG Series: Orange glass : OG530, OG550, OG570, OG590

RG Series: Red and black glass, IR transmitting : RG610, RG630, RG645, RG665, RG695, RG715, RG780, RG830, RG85

UG Series: Black blue glasses, ultraviolet transmitting : UG1, UG5, UG11

KG Series: Colorless glass with high transmission in the visible and absorption in the IR range (heatprotection filters) : KG1,KG2, KG3 KG5

NG Series: Neutral Density Filters: NG1, NG3, NG4, NG5, NG9, NG11

Graph of all above Filters can be viewed in the image gallery.

Other frequently used color filter:

WG Series: WG280, WG295, WG320, WG345, WG360
BG Series: BG38, BG39
VG Series: VG5, VG6, VG8, VG9, VG10, VG11

Dichroic Filter

Optica Dichroic Filters Series have been designed with the assistant of entertainment and architectural lighting designers, which provided a comprehensive selection of consistence shades express perfect images for both interior and exterior applications. Some of the subtle, pale also offer you a unique alternative to create various aesthetic effects for architectural use and characteristic lighting.

 

OAEPL Dichroic Series provide you the flexibility to choose suitable colors for your projects and the benesfits of absolute spectral stability in addition to excellent resistance to environmental degradation. 

 

Optica Dichroic Filters

  • 28 kinds of standard colors
  • 6 kinds of color correction filters.
  • Correspond to LEE and ROSCO
  • Size : 50 x 50 with 1.10mm thickness
  • Substrate : Borofloat glass material

Technical Specification

Humidity

Adhesion. Abrasion Resistance

Available Glass Substrate

Soda-Lime Glass, Tempered Glass, Borofloat Glass & Borosilicate Glass

Maximum Operation Temperature

Soda-Lime Material : 150 °C, Tempered Material : 250 °C & Borofloat Material : 450 °C

Available Sizes

Square : 7mm – 300mm & Round : 10mm – 450mm

Standard Thickness

1.10mm

Optional Thickness

0.55mm, 1.86mm & 2.86mm

Cutting Tolerance

± 0.1mm

Color Tolerance

± 5nm of Designed Half Height

Long pass and short pass filters are two distinct types of specialized optical filters. Long pass filters transmit electromagnetic radiation with long wavelengths while blocking shorter wavelengths. Short pass filters do the opposite: they pass short wavelengths and block longer ones. Both types are sometimes grouped as edge filters (referring to the steep cut-on and cut-off between transmission and rejection) or barrier filters (due to the rejection of large sections of long or short wavelengths).

Cold Mirror is used to in certain applications where it is desirable to reflect visible light, but transmit the IR (heat energy) to replace the Hot Mirror.

Filter

Application

Material

Long Pass Filter

Long Pass Filters Are Frequently Employed In Fluorescent Spectroscopy. Fluorescence, By Definition, Is The Emission Of Light By A Substance That Has Absorbed Electromagnetic Radiation; The Specific Light Wavelengths Absorbed Are Termed Excitation Light. Because Fluorescence Emitting From An Object Typically Has Higher Wavelengths Than The Excitation Light That Caused It, Long Pass Filters Can Be Used To Pass Only Precise Fluorescence Wavelengths While Blocking Leakage From The Excitation Lamp.​

Soda-Lime Glass, Tempered Glass, Borofloat Glass, Borosilicate Glass​

Short Pass Filter

Short pass filters are used in Raman spectroscopy.

Soda-Lime Glass, Tempered Glass, Borofloat Glass, Borosilicate Glass​

Cold Mirror

  • Medical Illumination
  • Projection System
  • Photo Copies
  • Reflector
  • Scanner

Soda-Lime Glass, Tempered Glass, Borofloat Glass, Borosilicate Glass​

Hot Mirror

Digital photography

Soda-Lime Glass, Tempered Glass, Borofloat Glass, Borosilicate Glass​

Interference Filter

Optica Dichroic Filters Series have been designed with the assistant of entertainment and architectural lighting designers, which provided a comprehensive selection of consistence shades express perfect images for both interior and exterior applications. Some of the subtle, pale also offer you a unique alternative to create various aesthetic effects for architectural use and characteristic lighting.

 

OPTICA can provide following typical Narrow Bandpass filter: CWL(nm) 340, 405, 420 ,430 , 450 , 470, 480, 492 ,500 505,510, 520, 532, 540, 546 ,550, 580,590, 600 610, 630, 650, ,690,730,780,830,900,940,1064

Filter

Application

Material

Flouresence Filter

This is broadly utilized in biotechnology and analytical applications due to its extraordinary sensitivity, high specificity, and simplicity.

Soda-Lime Glass, Tempered Glass, Borofloat Glass, Borosilicate Glass​

Narrow Bandpass Filter

Water And Environmental Testing, Clinical Chemistry, Colorimetry, Photometry, Lasers, Color Sorting ,Sensing And Detecting

Boroflat

Laser Line Filter

Flat-Top Narrowband Filters Are Ideal For LIDAR, Raman Spectroscopy, And Other Applications That Require The Use Of Precision Laser Transmitting Filters Or Laser Cleanup Filters.

  • Soda-Lime Glass
  • Tempered Glass Borofloat Glass
  • Borosilicate Glass

Interference Filter

Specification

Grade

Mount Diameter

10mm To 25.4mm +0/-0.2mm

Clear Aperture

>80%

Thickness

<10mm

CWL Tolerance

±2nm

FWHM

10nm

Peak Transmission

>45%

Block

<0.01%(X Ray To 1100nm)

CWL Shift

<0.02nm/℃

Narrow Bandpass Interference Filter

Specification

Grade

Central Wavelength (CWL) Tolerance

±2nm

Full Width-Half Maximum (FWHM)

10nm

Operating Temp.Range

-10° C To +70° C

Surface Quality

80-50

Block

<0.01%(X Ray To 1100nm)

Neutral Density (ND) Filters

Neutral density (ND) filters uniformly attenuate the intensity of light over a broad spectral range. Optical Density (OD), is achieved by either absorption using glass or by a combination of absorption and reflection metallic coating. Neutral density filters can attenuate spectral regions selected from 250 to 2500nm. Optical Density  can be from 0.04 to 4.  These are additive hence ND filters can be stacked to achieve the desired OD level.