Method for focusing an optical imaging system and device for carrying out the method
DE3433219A1
Computing device operating electronically
DE3340647A1
Method for focusing a microscope and microscope for carrying out the method
DE3214863A1
Image-inverting system with an angled beam path and interpupillary distance adjustment
DE3033126A1
Large-aperture projection objective - has four single lenses followed by thick single or cemented meniscus for correction
DE3029916A1
Wide angle retrofocus type projection lens - has eight single members to avoid need for condenser change and vignetting
DE3029929A1
Short focus projection lens of retrofocus type - has five specified single members to avoid need for condenser change and vignetting
DE3026703A1
Anti:reflection coating for transparent material, esp. optical glass - includes layer of zirconium di:oxide contg. tantalum oxide stabiliser
DE2920582A1
Optical effects toy for e.g. observing crystal growth - has object slide insert, polariser and analyser made rotatable about optical axis for adjustable lens
DE2900821A1
Dark field immersion condenser - has concave reflective layer inside cup shaped base and convex reflective layer under top
