Lin Gao Qiming

Chapter 2861 Trial Operation (I)

Huang Yaomin picked up the phone. It turned out to be Hong Huangnan calling, saying that he had something important to discuss with him.

"Lao Hong, weren't you in Guangzhou? Why are you back again? Have you got the approval for the Guangzhou 4S store project?"

"It's easy to get the approval document, but the problem is that they only give me the approval document but not the money. What do they think I am? A money-giving boy?!"

"Hahaha, I know you lost a lot of money at the 4S store in Linggao!"

Huang Yaomin thought to himself, you are just too ambitious. Ever since the Lingao Vehicle Factory launched the rickshaws and they sold well, Li Chiqi and his team started a chain of rickshaw maintenance and repair shops. Why don't you participate in this project? Although it looks rustic, it makes money!
"Isn't it? I have been criticized by so many elders for this matter. It seems that I am not popular in the Senate." Hong Huangnan talked about his grievances for a while.

"Stop talking nonsense. You didn't come back to Lingao just to call me to complain, did you?"

"Hehe, then I'll get straight to the point." Hong Huangnan laughed dryly. He returned to Linggao for business, but he was looking for Huang Yaomin mainly because of the matters of Store No. 82 and Wan Zi Pavilion.

"...take some photos of the products. I want to make a product brochure..."

"That's easy. What are you going to shoot? Where's the model?"

"I'll treat you to dinner tomorrow night and we'll discuss the details over the table." Elder Hong didn't want to say more on the phone. "I'll send a car to pick you up."

It was already evening when Huang Yaomin finished taking a set of photos of the maid. After returning home and having dinner, Huang Yuanlao returned to his study, turned on his computer and posted on the BBS "What era of lens can the optical department reproduce in the old time and space?"

Lin Hanlong's optical factory is currently unable to manufacture lenses. Even though the wet-process cameras used by the photo studio are manufactured in this time and space, the lenses used are still stock brought from another time and space - the same as the cameras currently used by the powerful departments and propaganda media.

BBS is now sparsely populated, and there is no post for ten days or half a month. The main reason for keeping it is that some technical people need it as a platform for communication without meeting. Moreover, the mode of posting and replying has no time limit, which can make good use of leisure time.

Therefore, after reducing most of the resources originally needed to set up the BBS, the IT department still retained a lightweight message board system that consumes very little resources.

He did not expect to get a quick answer because most of the veteran technicians would continue working after dinner and would only come to check when they were free.

Unexpectedly, within half an hour, Xu Qi from the Chemistry Laboratory responded:

"I feel that as long as it does not involve the design of special glass and multiple lenses, almost any design will do. After all, the development of mathematical calculations does not need to be repeated. In fact, most of the lenses are designed and produced according to the large and medium format lenses of World War II and before World War II. After all, the use of special glass and coatings in modern design is a hurdle that Lin Gao cannot cross. And Tiansai and Double Gauss have few lenses and mature structures, so there are not many problems in productivity. These relatively newer structures are easier to implement. However, most of them need to be redesigned for a large image field, but with the help of software, it is not particularly troublesome."

As for coating, the domestic coating machines in this time and space are also very easy to use and not expensive. But apparently no one on the holy ship brought them. In fact, even if they did, it would be useless because there are no high-purity materials for evaporation consumables. As for the technology tree of producing coating machines, it is stuck in the realization and maintenance of high vacuum, and it takes a long time to stare blankly. As for coating design, it seems that there are not many brothers from optical machinery institutes in 500 wastes. Although I have sold a lot of products, I have only played with simple single-layer metal films when I made them myself. If I really want to open the technology tree of thin film optics, it is a pit! By the way, I remember that in the early days, acid etching was used to form a thin layer of corrosion on the surface of glass to increase the transmittance. This method should be achievable in Linhai, but I have never seen the actual effect.

"Forget about the coating, a multi-element lens is enough." Li Chiqi also joined the discussion.

"Well, eight air surfaces without coating are the upper limit of what can be used in practice. Fortunately, there are a lot of usable structures under this condition." "Can the manual lens structure be copied directly? No need to design it again?"

"Sure, as long as we have the right brand of glass and the field of view distance matches, we can just start production." Lin Hanlong also expressed his opinion.

Eight air planes? Although Huang Yaomin was not an optician, he knew that it was enough to make a multi-element lens. He decided to look for more information and found a long article called "Structural Performance and Selection of Large Format Lenses". He looked at the structural introductions of several large-format camera lenses and found that the .dagor structure lens was more suitable for use in Lingao, so he copied these paragraphs:
The Dagor structure designed in 1892 can be said to be the beginning of modern optics... The Dagor lens adopts a two-group structure of 6 lenses, and is also a symmetrical positive lens. It can be regarded as a derivative of the Hypgon structure. Due to the use of cemented lens technology, a lens that is difficult to process can be divided into several parts and each lens can bear it separately. Therefore, this lens is the first design that can be popularized on a large scale. It is also because the lens group glued together by multiple lenses can use different glass properties for better dispersion correction. The Dagor lens structure is actually a structure between the wide-angle structure and the standard lens structure. The characteristics of the wide-angle lens inherited from the Hypgon are in conflict with the multi-lens correction itself. Most of the finished Dagor lenses are between 60-80 degrees, but because it can correct several basic high-level phase differences very well, the aperture can be made larger than the previous lenses. The general limit is f6.8, so most of the lenses of this structure are F6.8...

When Dagor lenses first appeared, there was no coating technology. Therefore, this structure was designed to avoid the interface reflection effect caused by too many air surfaces. With only four air surfaces, the light transmittance is very high.

He posted the above text on the forum, looking forward to good news from the optics department, and then turned off his computer and went to sleep.

There is still no historical conclusion about who invented the first practical popular camera: the Flagship wet plate camera. Today we can only make some guesses based on the "Daguerreotype" mentioned in someone's notes. However, there are a lot of records about the first camera lens of the Empire. To this day, we have to admire the scientific veterans of the Empire's optical industry. Their wisdom and achievements are probably unsurpassed to this day, especially the Tiansai lens they designed themselves. What kind of talent could inspire such inspiration to design this optical lens with extraordinary details, which won the reputation of Eagle Eye at the time. Due to its simple structure and relatively low cost, it is still widely used today. To be frank, it should be the appearance of Tiansai lens that made the popularization of photography inevitable.

————"History of the Development of Senate Camera"

The next day, Huang Yuanlao got up early. Today was the first day of the seven-day trial operation. For this purpose, he distributed more than 200 free photography tickets and 1,000 visiting tickets to potential consumer groups in Lingao through various channels. Of course, it was not mandatory to come or take photos. The main purpose was to see how many people in this group would respond.

Although it is not mandatory, considering the human nature of "watching the excitement", there will definitely be a lot of people coming during the trial operation. Therefore, the number of visitors and photographers is limited, and the number of people is limited every day. Huang Yuanlao was still worried, so he specially asked the Linggao Police Department to send a group of security police to the scene to maintain order.

At this moment, he was walking around the hall, watching the line gradually forming outside. Today was the mid-month holiday, and there were so many people coming! Moreover, many of them were families with elderly and children. It seemed that most of them were here to watch the fun.

6◇9◇Book◇Bar

However, if there were many clients coming to take photos on the first day, this newly-launched photo studio would probably be in a mess. After all, wet plate photography has many procedures and takes a long time to fix. He has tested that the whole process takes at least ten minutes for a single person. If it is a family photo shoot, it takes more than ten minutes just to adjust the poses and guide the expressions. If everything goes well, it will take about twenty minutes to complete. It takes even longer for children.

So he limited the number of tickets to 40 on weekends and 30 on weekdays. Two camera positions were used at the same time. He would increase the number of camera positions and staff as appropriate depending on the situation after the trial operation.

"It all depends on today's situation." Huang Yuan Lao looked at the business hall that he had carefully designed and arranged, from the appearance of the floor tiles to the color of the walls, the green plants placed, the style of the furniture... and even the lighting scheme on the top, all of which were selected by him, so it looks a bit like a TV studio. Walking in it, Huang Yaoming felt a sense of familiarity.

The staff of the photo studio were already in their positions, waiting in a serious manner. Huang Yaomin took a quick look and found that Chen Shixin, who was always the most active, was not there. He frowned and asked, "Where is Chen Shixin?"

"He has a day off today." Lao Zhang responded quickly.

Lao Zhang was the first photographer he trained. He was in the same field as Chen Shixin's father and was also a painter. Because of his painting skills, he was more sensitive to patterns and shapes. He was also his favorite disciple.

Such a strong fighter actually took a day off today. Huang Yaomin cursed himself for not thinking it through. Today is a public holiday, and he is the first one, so there must be the most people. He should be allowed to take a day off. Lao Zhang is reliable, but the others are a bit...

Just as he was thinking about it, he suddenly saw Chen Shixin through the glass window among the growing crowd of onlookers outside. He was wearing a brand new high-quality linen "cadre uniform" today, his hair was combed shiny, and he was chatting and laughing with two young girls!