Multifunctional condensing projection cylinder
A multi-functional and projection technology, applied in the field of photography, can solve the problems of increasing the production cost of the condensing projection tube, inconvenient for high heat generation, and high cost of photography, and achieve the effects of reducing the input cost, simple structure and principle, and simplifying the production process.
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Embodiment 1
[0036] As attached figure 1 And attached figure 2 As shown, Embodiment 1 includes a fixed ring 1, a convex lens 2, a connecting ring 3, and a focusing ring 4. The entire condensing projection tube is bolted to the flash tube "beam tube". The adjacent rings are connected by threads to avoid any one The shaking of the ring causes the convex lens 2 to shake, and the fine thread 102 facilitates the use of a lens cover to cover the fixing ring 1 to avoid dust. In this embodiment, the second external thread 401 is adjusted to use LED lighting, so that the projection sheet in the annular slot 402 is clearly projected into the photographic scene through the convex lens 2.
Embodiment 2
[0038] As attached Image 6 As shown, Embodiment 2 includes a focusing ring 4 and a conversion ring 5, and the entire condensing projection tube is bolted to the "beam tube" of the flash lamp. This embodiment mainly adjusts the second external thread 401 and adopts LED lighting, so that the projection film in the annular slot 402 is clearly projected into the photography scene through the SLR camera lens. At this time, the focus of the lens is adjusted from the outside. Built-in SLR camera lens.
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Abstract
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