CN2502297Y - 数码测光屏 - Google Patents

数码测光屏 Download PDF

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Publication number
CN2502297Y
CN2502297Y CN 01256616 CN01256616U CN2502297Y CN 2502297 Y CN2502297 Y CN 2502297Y CN 01256616 CN01256616 CN 01256616 CN 01256616 U CN01256616 U CN 01256616U CN 2502297 Y CN2502297 Y CN 2502297Y
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screen
zoom lens
utility
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digital
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王玉龙
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Abstract

本实用新型是由变焦镜头、机箱、LCD显示屏、印制电路板、触笔等组成的数码测光屏,摄相者可以在LCD显示屏上用触笔调整出拍摄时所需的光圈、速度、曝光补偿值等最佳参数,摄相者按此准确参数来调整相机,便可获得满意的相片。本实用新型具有数码相机的测光显示功能,但显示屏幕比数码相机大,且不需存储和视频输出,降低了制作成本,使用方便,为专业和业余摄影者拍摄广告、风光和人像照片提供了理想的工具。

Description

数码测光屏
本实用新型属照相机附件类。
照相是用照相机摄取景物影像,经过洗印获得正像(即照片)的过程,广泛应用于现代生活的各个领域,它不仅能记录人们日常生活中的珍贵瞬间和重大事件,在事后的日子里给人留下可视的回忆,同时也是宣传报道、科学技术研究和艺术创作的重要手段。因此,如何用照相机拍摄一张最理想的相片,是人们最关注的。众所周知,照相机是摄影的工具,一般由镜头、机身、取景器、快门、光圈、感光片等部分组合而成。用照相机摄取景物影像的过程通常包括三个步骤(1)景物形态通过物镜在感光片上曝光,构成潜影;(2)将曝光后的感光片经显影和定影等化学处理,得到明暗适度与景物相反或色彩与景物互成补色的负像即底片;(3)使感觉纸(或另一感觉片即正片)通过底片曝光,再经显影和定影等化学处理而得到明暗程度或色彩与被摄景物一样的正常相片,由此可见,要获得一张满意的照片,照相时物景在感光片上准确的曝光是非常关键的。
本实用新型的目的是为了使用传统胶片相机能拍摄出满意的好照片而提供给拍摄者拍摄前看到拍摄后实际效果的最佳参数。
本实用新型的技术方案如图1所示,在机箱1的前方有变焦镜头2,背后带触摸电路的LCD显示屏3,在机箱1的内部有印制电路板4,直立在变焦镜头2与LCD显示屏3之间,印制电路板4的中部安有图像传感器CCD5,面对变焦镜头2的中心线上成直角位置,这样外部的景物影像就直射到CCD5上,通过电路在显示屏上显示,摄影者便可清楚地在显示屏上看到所需拍摄的景物影像的明暗度、对比度、色彩分布等,如不满意,可以利用触笔6在显示屏上对整个画面进行点触调整,即可得到所点处的亮度值,也可多点点触,计算出平均亮度值。根据画面的亮度、反差和色泽在显示屏3直接读出参考曝光补偿、速度、光圈值参数,当调整到满意的画面时,显示在显示屏3上的各种参数便是最佳参数,摄影者按此参数对照相机进行调整,这样拍摄的相片便与显示屏3上所观察到的效果完全一样。
印制电路板4的电路原理是现有技术,如图2所示,景物影像的光线进入CCD5后,把景物影像分解成像素,转为电子信息,输入到ADC模数转换成数码信息,经CPU编码驱动,输入LCD3显示出来,当点触摸屏后,信息反传到CPU,对指令进行运算,最后在显示屏3上显示出点触后的效果图像及曝光参数。
图示说明:
图1:数码测光屏结构原理图。
图2:数码测光屏电路原理图。
1、机箱;2、变焦镜头;3、LCD显示屏;4、印制电路板;5、图像传感器CCD;6、触笔。
本实用新型采用的变焦镜头是2.5光倍,F=8-220mm(相当于135相机的38-95mm镜头、利用变焦按钮以0.2倍步进,可达4倍数码变焦,拍摄距离40厘米至无穷远,微距模式4厘米至无穷远,LCD液晶显示屏是3.5寸带有触摸电路,用触笔6或按键进行操作,是专业厂家生产的。触笔6可放在机壳1中固定位置。
本实用新型可制作去掉变焦镜头2的数码测光屏后背,可以直接插入各厂家配套卡口的120相机后背放胶片盒处,适用于120相机拍摄前的测光调整。
本实用新型可以根据个人爱好,确定组合曝光量,调整画面的明暗、反差、色彩,输入设定前实际拍摄效果的各参数,最后便能得到确定效果的照片。
本实用新型具有数码照相机的测显示功能,但显示屏幕比数码相机大,可以计算平均曝光值,看到实际拍摄效果。且不需存储和视频输出,降低了制作成本,使用方便,为专业为业余摄影者拍摄广告、风光和人像照片提供了理想的工具,是传统测光表的更新换代产品。

Claims (2)

1、一种由机壳(1)、变焦镜头(2)、显示屏(3)、印制电路板(4)、触笔(6)组成的数码测光屏,其特征是印制电路板(4)直立在变焦镜头(2)与显示屏(3)之间,印制电路板(4)上的图像传感器CCD(5)是面对变焦镜头(2)的中心线上,成直角位置。
2、根据权利要求1所述的数码测光屏,其特征是可制作去掉变焦镜头(2)的数码测光屏后背,可以直接插入配套各厂家卡口的120相机后背放胶片盒处,适用于120相机拍摄前的测光调整。
CN 01256616 2001-11-19 2001-11-19 数码测光屏 Expired - Fee Related CN2502297Y (zh)

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Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN100417196C (zh) * 2005-12-15 2008-09-03 普立尔科技股份有限公司 数码相机
CN101582985B (zh) * 2008-12-09 2011-07-27 王玉龙 数码触景技术相机

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN100417196C (zh) * 2005-12-15 2008-09-03 普立尔科技股份有限公司 数码相机
CN101582985B (zh) * 2008-12-09 2011-07-27 王玉龙 数码触景技术相机

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Date Code Title Description
C14 Grant of patent or utility model
GR01 Patent grant
C19 Lapse of patent right due to non-payment of the annual fee
CF01 Termination of patent right due to non-payment of annual fee
C32 Full or partial invalidation of patent right
IP01 Partial invalidation of patent right

Decision date of declaring invalidation: 20050608

Decision number of declaring invalidation: 7363

Case number: 5W05788 5W05825

Conclusion of examination: Claim 1 was invalid. On the basis of claim 2, the patent right remains valid.

Decision date: 20050608

Denomination of utility model: Digital light measuring screen

Granted publication date: 20020724

Patentee: Wang Yulong

Review decision number: 7363