Visible-range material
N-BK7 provides a familiar optical-glass option for laboratory imaging, alignment, and measurement assemblies.
This rhombic Dove prism is precision ground and polished to rotate an image by 180 degrees while keeping the transmitted beam path compact. Felix Glass Co., Limited supplies drawing-based dimensions, uncoated parts, and optional high-reflection mirror-coated surfaces for optical alignment, interferometry, laboratory imaging, and instrument integration. A Dove prism inverts an image after one internal reflection. When the prism rotates around its optical axis, the observed image rotates at twice the prism angle. This behavior makes the component useful where image orientation must be changed without adding a multi-element relay assembly. System performance depends on entrance angle, material, surface quality, prism geometry, and any reflective coating. Final dimensions and tolerances should therefore be reviewed against the optical path and mounting design. The following values preserve the original product specification and are provided as a project reference. Confirm production tolerances for the required size, coating, wavelength, and quantity. N-BK7 provides a familiar optical-glass option for laboratory imaging, alignment, and measurement assemblies. Drawing-based dimensions and tolerances can be reviewed for prototypes, replacement parts, and repeat production. Use an uncoated prism when appropriate, or request a reflective coating based on wavelength and system requirements. The prism supports image inversion and rotation without requiring a long multi-lens image relay. Image-orientation control in calibration fixtures and compact optical benches. Optical measurement equipment where image inversion or controlled rotation is part of the system design. Research imaging paths, beam-rotation platforms, and experimental optical assemblies. Miniature sensing, spectroscopy, and custom optical modules with restricted installation space. Confirm drawing, material, wavelength, tolerance, coating, and quantity. Review grinding, polishing, edge treatment, coating, and inspection requirements. Arrange the agreed sample or batch route and control the specified dimensions. Check the agreed optical and mechanical criteria before clean packaging. Inspection scope should match the system risk and drawing. Common review points include material confirmation, dimensions, angle, surface quality, flatness, clear aperture, coating appearance, and optical performance. Share any required test method or report format when requesting a quotation. No. In the standard operating principle, the image rotation is twice the mechanical rotation angle of the Dove prism. Yes. The original product supports an uncoated option as well as an optional high-reflection mirror coating. Send the drawing, dimensions, material, wavelength, coating faces, tolerances, quantity, and inspection requirements. Yes. Drawing-based side length and related mechanical requirements can be reviewed for custom production. Send your drawing and optical requirements to Felix Glass Co., Limited. The team can review N-BK7 geometry, tolerances, coating, quantity, and inspection needs before quotation.N-BK7 Dove Prism for Controlled 180-Degree Image Rotation

What Does a Dove Prism Do?

Typical Optical and Mechanical Parameters
Material N-BK7 optical glass Prism type Rhombic Dove reflective prism Core function 180-degree image rotation and optical-path inversion Coating Uncoated or optional high-reflection mirror coating Surface quality 20/10; 60/40 optional Surface flatness 1/8 wave at 633 nm Clear aperture At least 80% of the central area Angular tolerance Up to ±3 arc minutes Customization Side length, geometry, edge treatment, and coating review Origin Guangdong, China 
Why N-BK7 Is Used for Visible-Light Dove Prism Designs
Visible-range material
Manufacturing flexibility
Coating choice
Compact image control
Where a Rhombic Dove Prism Can Be Integrated
Optical alignment
Interferometry
Laboratory imaging
Instrument modules
From Drawing Review to Finished Prism Inspection
Requirement review
Process planning
Prototype or production
Final inspection

Inspection Items to Define for a Custom Dove Prism
Frequently Asked Questions About Custom Dove Prisms
Does the prism rotate the image by the same angle as the prism?
Can the prism be supplied without coating?
Which project details are needed for a quote?
Can dimensions be customized?
Useful Felix Glass Resources for Optical Prism Projects
Request an Engineering Review for Your Dove Prism