Variable contrast light source for condenser enlargers

• 1. 可变放大率光学系统、光学装置，和用于可变放大率光学系统的生产方法 [P] . 中国专利： CN104755986B . 2017.04.26
• 2. 可变放大率光学系统、光学装置，和用于可变放大率光学系统的生产方法 [P] . 中国专利： CN104919354B . 2017.10.24
• 3. Light for projecting light/shadow pattern at e.g. wall of room, has shields partially surrounding light sources, where position of light sources is variable relative to shields, and size and shape of light sources are variable [P] . 瑞士专利： CH701559A2 . 2011-02-15

  机译： 用于投射光/阴影图案的光，例如房间的墙壁，具有部分围绕光源的屏蔽层，其中光源的位置相对于屏蔽层是可变的，并且光源的大小和形状是可变的

• 4. Projector unit for a motor vehicle's headlights has a variable condenser lens, a reflector, a source of light and a screen [P] . 德国专利： DE102004012519A1 . 2004-10-21

  机译： 用于机动车辆前灯的投影仪单元具有可变聚光镜，反射镜，光源和屏幕

• 5. Method of forming the contrast light source device and a contrast light source [P] . 日本专利： JP5839990B2 . 2016-01-06

  机译： 形成对比光源装置的方法和对比光源

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