Detailed Product Description Specifications:Name of apertureDimension of apertureDimension of ImageAngle of viewRed-free filerφ2.4φ2.37°44 24Large spotφ1.2φ2.37°44 24Small spotφ2.4φ1.153°52 28hemispotφ2.4φ2.37°44 24Opticar Specifications:Illumination of light spotLight spot be apart from reflector 150mm:85 lxDiopter 0D,±1D, ±2D, ±3D, ±4D, ±6D, ±8D,10D,15D,20DAperture Red-free filter,large spot , ...