A zinc selenide window is a transmissive optical component used where an infrared beam must pass through an instrument boundary or a protected optical path. Selecting a ZnSe window requires more than choosing a diameter: the operating wavelength, coating, beam conditions, mounting arrangement and inspection criteria need to be specified together.
Product Description
ZnSe is a candidate material for infrared windows and CO2-laser optical assemblies. A plane window transmits the beam; it is not a focusing lens. A lens requires a separate optical prescription, including curvature and focal length.
Xinkehui accepts product enquiries for ZnSe optical components. The supplied local photographs show yellow optical pieces in different configurations. Photographs alone do not establish material grade, coating band, absorption, laser-damage threshold or achievable tolerance, so those requirements must be confirmed in the quotation.
Product Applications
Infrared spectroscopy
ZnSe windows can be considered for infrared spectrometers and analytical optical paths when their material, thickness and coating match the required spectral band. Specify the measurement range and whether transmission will be tested on an individual part or by a sampling plan.
CO2 laser optical assemblies
ZnSe is used in CO2-laser optics, but suitability for a particular laser must be assessed against wavelength, continuous-wave power or pulse conditions, beam diameter and coating design. Do not substitute a generic window for a qualified high-power optic.
Protected instrument optical paths
A window may separate an optical path from its surroundings. Mechanical loading, seals, exposed media and temperature must be assessed independently of optical transmission. A photograph or material name does not establish a pressure rating.
Infrared research and prototype systems
For prototype optics, define the experiment's spectral band and mounting envelope before choosing the window. Where a broad band is required, compare substrate transmission, coating bandwidth and reflection losses rather than assuming one coating suits every measurement.
Product and Procurement Advantages
Material-led selection
The material is considered in relation to the actual infrared operating band. This avoids selecting solely from visible colour or a nominal material label.
Drawing-led configuration
Geometry, clear aperture, edge treatment and mounting constraints can be reviewed as a coordinated requirement rather than independent catalogue choices.
Coating-aware evaluation
An uncoated window and a coated window are not optically equivalent. Define the wavelength band, angle of incidence and reflection or transmission acceptance criteria before requesting a coating.
Explicit acceptance criteria
An enquiry can include dimensional inspection, surface quality, flatness, parallelism and spectral tests. Availability of each test and its reporting format must be confirmed for the order.
Specification and Acceptance Checklist
The following is a quotation checklist, not a guaranteed stock specification. Numerical tolerances, transmission, price and delivery terms require order-specific confirmation.
| Item | Specification or enquiry input |
|---|---|
| Material | Zinc selenide (ZnSe); grade and traceability to be confirmed |
| Component function | Transmissive optical window; not a focusing-lens prescription |
| Geometry | Diameter or length and width, thickness, and required clear aperture |
| Operating band | Customer-specified infrared wavelength band; suitability subject to review |
| Dimensional tolerances | State on the drawing; not inferred from a photograph |
| Surface quality and flatness | Specify acceptance standard, limits and test wavelength |
| Parallelism or wedge | Specify according to beam-path and interference requirements |
| Coating | Uncoated or a requested coating design; feasibility and performance require confirmation |
| Laser-use conditions | Wavelength, power or pulse energy, pulse width, repetition rate and beam size |
| Inspection and packing | Order-specific tests, traceability and protective packaging to be agreed |
Handling and Application Limits
Avoid abrasive contact and uncontrolled machining of ZnSe optics. Request the applicable safety data sheet and coating-specific cleaning instructions, handle clean components by the edges, and isolate damaged parts. Laser compatibility, environmental resistance and pressure loading require project-specific assessment. Do not apply generic sapphire or quartz tolerances to ZnSe.
Xinkehui: Company Capability and Project Support
Shanghai Xinkehui New Materials Co., Ltd. works in the development, processing and supply of semiconductor substrates and optical crystal materials. Its published company profile describes an engineering team, precision processing equipment, testing instruments and support for non-standard components.
The company profile lists cutting, grinding, lapping, polishing, coating, cleaning and inspection activities within its broader material business. These capabilities provide a basis for discussing custom optical components; they are not a blanket guarantee that every process, tolerance or test is available for every material.
For a project-specific quotation, Xinkehui reviews the material, drawing, operating conditions and acceptance requirements together. Inspection methods, coating performance, packaging and delivery terms should be agreed in the order specification. No customer endorsement, certification, patent count or batch-performance guarantee is implied by this page.
RFQ: Information for a Technical Quotation
- Material grade or procurement specification
- Drawing, diameter or length and width, thickness and clear aperture
- Dimensional tolerances and edge treatment
- Spectral band, angle of incidence and polarization if relevant
- Coating request and optical acceptance limits
- Laser power or pulse conditions and beam diameter where applicable
- Mounting, exposed media, pressure differential and temperature
- Surface quality, flatness, parallelism or wedge requirements
- Inspection records, traceability and packaging requirements
- Quantity, delivery destination and requested delivery date
Ten Procurement FAQs
1. What information is needed to quote a ZnSe window?
Provide the drawing, material requirement, operating wavelength band, clear aperture, thickness, coating request, quantity and delivery destination. Add mounting conditions and required inspection records. Missing acceptance criteria should be resolved before ordering.
2. Is a ZnSe window the same as a ZnSe lens?
No. A plane window is specified to transmit a beam through an optical boundary. A focusing lens has an optical prescription such as curvature and focal length and must be quoted separately.
3. Can this window be used in a CO2 laser system?
ZnSe is used in CO2-laser optics, but the individual window must be assessed against the laser wavelength, power or pulse conditions, beam size, coating and mounting. A generic product description does not establish a laser-damage rating.
4. Which wavelength range should I put in the RFQ?
State the actual operating band and any required out-of-band behaviour. Ask for an order-specific transmission or reflection criterion; do not assume a material's general transmission range is a guaranteed finished-window specification.
5. Should I request an uncoated or coated window?
The choice depends on allowable reflection, spectral bandwidth, angle of incidence and operating conditions. Request a coating evaluation if reflection losses matter, and define the performance to be confirmed in the quotation.
6. How should size and thickness tolerances be specified?
Put diameter or length and width, thickness, dimensional tolerances, clear aperture and edge treatment on a controlled drawing. No universal tolerance is promised here; achievable values require an order-specific review.
7. How do I specify flatness and surface quality?
State the relevant surface-quality standard, flatness or transmitted-wavefront limit, test wavelength and usable aperture. These terms describe different aspects of quality and should not be treated as interchangeable.
8. What inspection documents can I request?
Request the dimensional, surface, flatness, parallelism, coating or spectral records needed for your acceptance plan. Xinkehui must confirm which tests and traceability documents are available for the specific material and order.
9. How should ZnSe optics be handled and cleaned?
Use clean handling practices and avoid abrasive contact. Obtain the safety data sheet and cleaning instructions for the actual substrate and coating. Damaged optics should be isolated; do not grind or process the material without an appropriate safety assessment.
10. What are the price, minimum quantity and delivery time?
These are quotation items determined by geometry, grade, coating, tests, quantity and destination. This page does not assert a current price, minimum order quantity, stock level or delivery time.
Request a Product Review
Contact Xinkehui through this website's enquiry or WhatsApp channel with your drawing and the RFQ information above. Confirm the final specification, inspection requirements and commercial terms before placing an order.
